danish biogas plant

Danish CentralisedBiogas Plants

- Plant Descriptions

Bioenergy Department, University of Southern Denmark, 2000

2 Danish Centralised Biogas Plants - Plant Descriptions - May 2000

ContentsPreface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1. The Biogas Programme 1998 - 2001 . . . . . . . . . . . . . . . . . . . . . . 4

2. Biogas Plant Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.1 Vester Hjermitslev . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.2 Vegger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.3 Davinde . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.4 Sinding-Ørre . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.5 Fangel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.6 Ribe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.7 Lintrup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.8 Lemvig. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2.9 Hodsager. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.10 Hashøj . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.11 Thorsø . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.12 Århus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.13 Filskov . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

2.14 Studsgaard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2.15 Blåbjerg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2.16 Snertinge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

2.17 Blåhøj . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

2.18 Nysted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3. Addresses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

The Lemvig plant is one of thelargest biogas plants in the world.

The plant in Studsgaard has posi-tive experience with co-digestionof slurry, organic waste andsource separated householdwaste.

The biogas plant in Hashøj dem-onstrates combined biogas/naturalgas fuelled CHP plant.

Danish Centralised Biogas Plants - Plant Descriptions

Written by: Teodorita Al Seadi, Bioenergy Department, University of Southern Denmark.

Proofreader and charts: Gurli Kirsten, Bioenergy Department, University of Southern Denmark.

Edited by: Jens Bo Holm-Nielsen, Bioenergy Department, University of Southern Denmark.

Published by: Bioenergy Department, University of Southern Denmark, May 2000.

Layout and photo: Torben Skøtt, BioPress.

Printed by: CS Grafisk.

Additional copies of this report are available from: Bioenergy Department, University of Southern Denmark, Niels Bohrs Vej 9, DK-6700 Esbjerg.

Danish Centralised Biogas Plants - Plant Descriptions - May 2000 3

PrefaceConsiderable efforts in developing the biogas technology has been carried out in Denmarksince 1988, with successive biogas development programmes accomplished, financed andsupported by Government.

The first biogas plants were only designed for generating energy. Later it occurred that theplants make a significant contribution to solve a range of problems in the fields of agriculture,energy and environment. Consequently, increased attention has been paid to these issues,and centralised biogas plants are now considered as integrated energy production, manureand organic waste treatment and nutrient redistribution facilities.

Some 20 centralised biogas plants are currently in operation in Denmark.

This has led to Denmark having a unique level of know-how in the fields of construction andoperation of centralised biogas plants. In addition to this, the Government supported follow-up programmes that have secured comprehensive documentation of production results.

The plants and the operation experience gathered are set out in the present report. All plantdescriptions are based on 1999 data.

The report is written by Teodorita Al Seadi, M.Sc., and edited by J.B. Holm-Nielsen, M.Sc.,head of the Bioenergy Department, University of Southern Denmark.

May 2000.

Johannes Christensen, Research DirectorDanish Institute of Agricultural and Fisheries Economics

Chairman of the Biogas Group, which is responsible for the Biogas Development Program,under the Danish Energy Agency.


1975 1985

Straw

Waste

Ambient heat

Wood

Biogas

Geothermics

Energy Crops

Solar heating

Wind energy

1995 2005 2015 20250

50

100

150

200

250

PJ/year

Renewable energy development until year 2030.Source: Energy 21, the Danish Governments ActionPlan for Energy.

The biogas programmein Denmark 1998-2001

By Johannes Christensen & Jens Bo Holm-Nielsen

Since 1987, the Danish Ministry of Food, Agricultureand Fisheries and the Danish Ministry of the Environ-ment and Energy have jointly financed a develop-ment and demonstration programme. Support for re-search and development has also been forthcomingfrom the Energy Research Programme and the De-velopment Programme for Renewable Energy.Biogas technology has since developed significantlyin Denmark, helped along the way by governmentenergy plans, by more specific biogas plans of actionand the above-mentioned R&D programmes. Manydifferent institutions, companies and individuals havemade contributions to the results achieved. It hasbeen teamwork in which the interests of energy con-servation, the environment, industry, and agriculturehave become united.

There is need to continue the work by improving thefunction and efficiency of biogas plants, and createimproved economic and organisational frameworkconditions to further the establishment of new instal-lations in accordance with the plans outlined in thegovernment’s energy plan - Energy 21.

At the moment, the wider adoption of biogas installa-tions has stagnated, especially where new central-ised biogas installations are concerned. Instead, newfarm biogas plants are being installed in connectionwith large-scale pig farming. From a production pointof view, actual progress is quite good and will accel-erate in the coming years.

There will still be a possibility of expanding the re-covery of landfill gas and the production of biogasbased on domestic and industrial waste. However,by far the largest potential can be found in farmyardmanure and slurry based biogas plants and thereforethis area is of special significance for the develop-ment of the biogas industry.

Main objectiveIt was decided to progress the special cross-ministe-rial biogas programme during the period 1998-2001.The advisory Biogas Group was given the responsi-bility of implementing the programme, which consistsof a number of follow-up, development and informa-tion activities undertaken by different institutions pri-marily within sector research and The AgriculturalCouncil of Denmark. The total budget for the periodis DKK 12 million.

The government therefore continues to give signifi-cant support to the biogas area for research and de-velopment work, and in the form of support for instal-lation investments. In addition, there is a specialelectricity subsidy and indirect support in the form oftax exemptions in connection with the consumptionof heat generated from biomass. Without these sup-port measures no renewable energy sources wouldbe capable of economic survival.

Behind this state support is the desire to see biogastechnology contributing to the realisation of some ofthe main objectives of society. There are threepart-objectives:

1. Achieving the objectives laid down in Energy 21,where in the long term 35 percent of energy sup-plies will come from renewable sources. An an-nual 20 PJ of this energy is to come from biogas,corresponding to an eightfold increase in relationto the 1998 biogas production. The whole of thebiogas area is included, but the main effort will bedirected towards installations based on the diges-tion of farm manure.

The special biogas programme being im-plemented now and until the end of 2001is intended as a contribution towards therealisation of plans of action in respectof energy conservation, the reuse ofwaste, and the improvement of the waterenvironment. The programme focuseson, among other things, operating econ-omy, biogas from domestic waste andthe improved distribution and utilisationof farmyard manure. It is also designedto create more movement in the estab-lishment of new biogas installations.


V. Hjermitslev

Vegger

Lemvig

HodsagerThorsø Århus

Sinding

Studsgård

BlåhøjFilskovBlaabjerg

LintrupFangel

Revninge

Davinde

Nysted

Hashøj

Snertinge

Ribe

Vaarst-Fjellerad

2. Helping to increase the reuse of organic domesticwaste, of waste water sludge and other suitabletypes of waste. The objective of the plan of actionfor waste - Waste 21 - is to use 100,000 tons oforganic domestic waste in biogas installationsduring the year 2004. In the longer term, the ob-jective is 350-400,000 tons.

3. Clarifying the extent to which different types ofbiogas installation are able to contribute to the ful-filment of the requirements of agriculture in theutilisation of livestock manure in relation to WaterEnvironment Plan II. Action Plan II for the devel-opment of organic agriculture points to biogas in-stallations as a means of ensuring the recyclingof nutrients from organic waste - a central issue inbeing able to convert a major part of agriculture toorganic production.

In addition to the three main objectives named abovethere are also possibilities of providing more jobsand increasing exports. Export activities are in prog-ress but these must be further supported, primarilythrough well-functioning reference installations onthe home market.

Areas of activityState research and development activities must becoordinated with the development carried out bycompanies who operate in the market. Biogas plantis by no means a new technology, but one that to acertain extent has made a breakthrough, commer-cially and in terms of development. The public sectormust therefore concentrate on what the various play-ers on the market cannot themselves undertake. Sig-nificant parts of the technological development of theplant itself can be more appropriately left to the com-panies who supply the equipment, for it is this theyhave to sell and compete on.

The programme covers a number of more generalconditions in relation to the social economic functionof biogas installations when seen from the point ofview of energy supply and the environment, but therethe division of labour is not clear-cut. Agriculture, thedistrict heating sector and public authorities mustalso make a contribution if biogas installations are tobe further developed and adopted more widely.Finally, the more fundamental parts of process andtechnological development will need state funding.

This article focuses on some of the more essentialactivities included in the Biomass Programme1998-2001. The programme is quite flexible in its ap-proach, which means that tasks which subsequentlyemerge can also be included on the agenda.

Economic analysesThe economic follow-up programme and the collationof operating experience gained from both farmscaleand centralised biogas installations are in progress,thus the way the production and operating economyof established plant are developing is under goodcontrol. Economic analyses and model calculationsare being carried out in this connection in order toillustrate the significance of cost reductions, billing,different plant concepts, etc. The purpose here is to

provide a basis for the various decision makers in-volved. There is also need for information that canbe used for administrative and political purposes.The recently adopted reform of the policy on electric-ity supply in Denmark means that the billing rules forbiogas installations will have to be scrutinised moreclosely before the end of 2003.

The economic development will of course determinethe rate at which wider adoption takes place, whichtypes of plants appear, which financing and organi-sational models become dominant. Large variationsin earnings can be anticipated and risk evaluationtakes on a special significance.

The economic consequences for farmers and author-ities, and the possible supplementary treatment ofthe degassed manure are expected to become fac-tors of more importance. On the municipal side it isessential to be able to evaluate the economic pat-terns arising from domestic waste and sludge treat-ment taken together livestock manure and its relationto biogas installations. The programme is intended toinitiate the development of better methods and thecompilation of enhanced databases for analysing thesocial and environmental-economic consequences ofbiogas installations.

More gas from manureThe results of research suggest among other thingsthat through comminution around 20% more gasfrom manure can be obtained than is possible today.If this does show itself as a practical possibility at nottoo high a cost, it will have much impact on biogaseconomics. Work is being carried out on upscalingthe experiments with a view to demonstrating the

20 centralised biogas plants are in operation in Den-mark. As most of the livestock production takesplace in the western parts of the country, this is alsowhere most of the biogas plants are found.


practical possibilities. The aim is to transfer the re-sults to both existing and future plants, provided ofcourse that the system does prove to be economi-cally advantageous.

The programme is also aimed at increasing knowl-edge on winning gas from livestock manure, includ-ing the possibility of being able to predetermine thegas potential. In practice there are large variations,because of feed, collection and storage methods forexample. For this reason, investigations have beenstarted to shed more light on these conditions.

Integrated waste treatmentThe programme will help improve and clarify thetechnology, economy, and the organisational condi-tions surrounding the use of domestic waste andsludge in agriculturally-based biogas installationsthrough goal-oriented technological developmentand the establishment of new demonstration plants.Considerable experience in this area has alreadybeen gained, but more work is necessary, specifi-cally on the sorting of domestic waste - primarily withthe object of avoiding plastics, and with techniquesfor separating plastics that cannot be avoided.

The development work itself is to be undertaken bymunicipalities, the waste disposal sector and plantsuppliers. The primary role of biogas programme ac-tivities will be to document results achieved and op-erating experience in a form that creates a deci-sion-making basis for future integrated waste treat-ment.

In the same connection there must be closer analy-sis of the role biogas installations can play in therecirculation of nutrients as a factor in the more wide-spread adoption of organic agriculture and horticul-ture.

Domestic waste and sludge are what can be called“problem products” in the sense that they might con-tain substances which burden the environment.Steps must also be taken to ensure that no germscan be present to spread disease. Investigation andanalysis are needed in both areas and theprogramme is designed to help the process. Furtherinvestigation must be devoted to the significance ofbiogas installations in connection with the preventionof contagious disease among livestock.

Distribution and use of nutrientsCentralised biogas plants provide good possibilitiesfor the redistribution and better utilisation of nutrientsin livestock manure and waste. The BiogasProgramme 1998-2001 develops and further docu-ments these possibilities in the light of the nowstricter requirements of Water Environment Plan II.This work is aimed especially at:

• The preparation of a nitrogen report on untreatedand degassed manure in order to quantify the ef-fect on washing out and nitrogen loss includingthat which occurs when transferring the manurefrom stable to field using different spreading strate-gies.

• The preparation of a follow-up programme for nutri-ent transformation by using separation plant inconnection with biogas installations, with specialfocus on the phosphorus burden on agriculturalsoil.

• The possibilities of using the potential of improvednitrogen utilisation of degassed manure seen in thelight of legislation which reduces permissibleamounts of nitrogen fertiliser.

The motivation of farmers in taking part in the wideruse of centralised biogas plants largely depends onwhat can be documented and demonstrated, i.e.they must be shown that there are marked practicaland economic advantages in treating farmyard ma-nure in this way.

InformationThe information and dissemination activities will becontinued and adapted to the needs of the Danishbiogas sector, the authorities, and decision-makersin general - in an international setting.

Regular seminars will be held for operations manag-ers at which specific facets of management will bediscussed and at which there will be opportunities toexchange experience. There will also be regularseminars on the economic side for managers andchairmen of centralised biogas installations. Heresuch matters as operating economy, financing, main-tenance strategies and plant improvements will bediscussed.

Information is also being issued through articles in“Dansk Bioenergi”. Detailed background reports fromvarious other areas of activity are also being issued.

The promotion of newinstallationsThe reform of the policy on electricity supply in Den-mark, adopted on 3 March 1999, to a certain extentclarified future billing rules for biogas-based electric-ity and heat. Experience from already establishedcentralised biogas installations shows that normally itis very time-consuming to plan and finance an instal-lation. The planning time can often be 2-3 years. Au-thority requirements have gradually increased in sig-nificance concurrently with the sector becoming animportant factor in energy supply. Therefore a pro-posal under consideration is to create a team of ex-perienced board members from established installa-tions to advise new initiators so that they avoid theobvious traps in setting up new projects.

Some existing installations, even quite new ones,have suffered from technical defects that have led tomany difficulties. An appeal must be made here tosuppliers and consultants to make sure that the qual-ity of installations prevents the teething troubles thatgive rise to a poor reputation, and uncertainty on thepart of future owners. The biogas programme willcontinue to include the offer of detailed technical as-sistance and the discussion of new installation pro-jects with a group of experienced managers andtechnicians for the purpose of establishing quality as-surance and the transfer of experience.


The interest of farmers in taking the initiative and ac-cepting the responsibility for centralised biogas in-stallation is less clear than it was 5-10 years ago. Itwas then advantageous for farmers to provide the re-quired manure storage capacity in a centralisedbiogas installation. This capacity has now been cre-ated, but new requirements concerning the agricul-tural environment again direct the interest of farmersto phosphorus distribution, increased nitrogen utilisa-tion in cultivation, and less emission and odour frompig production and manure spreading.

However, biogas installations still offer a number ofadvantages which up to now have perhaps not beenmade sufficiently visible, but which are so good thatthey would at least stimulate the desire of farmers tobecome suppliers to biogas installations. Others canassume the responsibility for establishing and oper-ating them. “Others” in this context might be alreadyestablished biogas companies who would benefitfrom being able to expand. Initiatives might alsocome from equipment suppliers or from waste dis-posal companies perhaps in cooperation with a fi-nancing institution.

Common to the new organisation models is that fromnow on satisfactory economic conditions can be cre-ated, to the extent that money can be earned frombiogas. The main objective of the biogas programmeis thus to contribute to the greatest extent possible inensuring that such a commercial foundation can becreated.

Animal Manure Industrial organic waste

Biogas for heat &power stations

Fertilizer on the fields

Centralized Biogas Plant

CattlePigPoultry

IndustriesMSW (organic)Sewage treatment plant

Renewable energy sourceCO -neutralReduction of air pollutionEffective energy utilization

2

Improved utilzation ofplant nutrientsReduction of the consumptionof mineral fertilizerReduction of water pollution

HomogenizationDigestionReduction of odour nuisanceSanitationNutritionally defined product

The main streams of the Centralised Biogas Plant in-tegrated concept. Source: Centralized Biogas Plants;From idea to reality (Danish Version); Danish EnergyAgency Nov. -95.


Vester Hjermitslev

Vacuumtanker

Pre-storagetank

Tractor/sludge pumps

Gas firedboiler

Digester

Storagetank

Windturbine

Oil firedboiler

Organicwaste Wind energy Oil

Slurry

Fertiliser

Electricityto the grid

Processheating


Districtheating

Sanitationtank

CHPplant

Vester Hjermitslev biogas plant was started up in1984 as the first centralised co-digestion plant inDenmark. The plant was built as a consequence ofthe energy crisis and as an example of energyself-sustainability. The enforcement of the environ-mental legislation increased the farmers motivationto join a centralised co-digestion plant, and to solveagricultural and environmental problems related tointensive animal husbandry.

The plant is owned by Vester Hjermitslev Energisel-skab, an independent institution, and was built by theNorth Jutland County Council, together with a windturbine, as part of the “Village Energy Project”. Theaim was to demonstrate the advantages of decen-tralised energy supply, based on local resources.The first years of operation were experimental years,marked by serious operating problems leading to ex-tensive reconstruction in 1987-88 and 1991.

5 cattle and pig farms supply slurry to the plant. Theslurry is mixed and co-digested with flotation sludgefrom fish processing industry, tannery waste andsmaller amounts of fodder waste. The process ismesophilic, at 37°C. The digested biomass is submit-ted to a sanitation process for 4 ½ hours at 57°C andtransported to 2 storage tanks placed close to thefields and shared by the manure suppliers, or to theirown storage tanks, as a valuable fertiliser. The con-tent of macronutrients and dry matter is determinedbefore delivering it to the farmers storage tanks. The

surplus is sold to 10 crop farms in the area, amongthem the local Organic Farming School.

The plant has its own CHP- unit, where the producedbiogas is primarily utilised in the 2 biogas motors(840 kW +770 kW). Any overproduction is used in agas boiler (250 kW).

Main dataAnimal manure . . . . . . . . . . . . . . . . . . . . 41 tons/dayAlternative biomass . . . . . . . . . . . . . . . . . 13 tons/dayBiogas production . . . . . . . . . . . . . 1.0 mill. Nm3/yearDigester capacity (3 × 500 m3) . . . . . . . . . . . 1500 m3

Process temperature . . . . . . . . . . . . . . . . . . . . . 37°CGas storage capacity . . . . . . . . . . . . . . . . . . . . 50 m3

Utilisation of biogas. . . . . . . . . . CHP-plant/gas boilerTransport vehicle . . . . . Tractor/15 m3 vacuum tankerAverage transport distance . . . . . . . . . . . . . . . 1.5 kmInvestment cost1 . . . . . . . . . . . . . . . . . 12.4 mill. DKKGovernment grant . . . . . . . . . . . . . . . . 4.3 mill. DKKContractor . . . . . . . . . . . . . . . . . . . . . . . . Krüger Ltd.Operation start-up . . . . . . . . . . . . . . . . . . . . . . . 1984

1. Not incl. storage capacity.


Vegger

Vacuumtanker

Pre-storagetank

Mixingtank

Tipperlorry

CHPunit

Gas/oil firedboiler

Digester

Storage tankGas Storage

Windturbine

Organicwaste

Bleachingclay

Wind energy

Slurry

FertiliserElectricityto the grid


Districtheating

Processheating

The centralised co-digestion plant in Vegger is ownedand operated by Vegger Energiselskab, an independ-ent institution. The plant was build in 1985/86 as a pilotplant, part of the “Village Energy Project”. The aim ofthe project was to demonstrate the advantages of de-centralised energy supply, based on local resources. In1987 a trial of the reliability of the thermophilic digestionwas carried out at the plant, with positive results.

From the beginning the plant had serious technicalproblems, resulting in major reconstruction projectsin 1988-1991. As a result, a low pressure gas systemwas established, with an extra gas engine-unit and alarger gas boiler.

The biomass mixture consists of cattle manure sup-plied by 5 cattle producers, intestinal content from pigabattoirs, bleach clay from vegetable oil processing,organic waste from the fish processing industry, me-dicinal industry and food processing industry, andsewage sludge. The anaerobic co-digestion takesplace at thermophilic temperature, 55°C. The biomassis heated partly through the heat exchanger systemsand partly by heat pipes inside the digesters. Patho-gen reduction is ensured by a guaranteed retentiontime of minimum 3 hours at the process temperature.After digestion, the biomass is pumped to a storagetank, covered with a gas-tight membrane (soft cover),where the remaining gas production is collected. Themanure suppliers receive the digested biomass intheir own storage tanks, or in a 3000 m3 shared stor-age tank, 3 km away from the plant.

The gas is utilised in a CHP-unit, consisting of threegas engines ( 390 kW + 890 kW +1550 kW). Astandby gas boiler (1300 kW) is used for peak loadheat consumption and in case of engine failure. Theheat is sold to Vegger District Heating Plant andsome is used as process heat. The electricity pro-duced is sold to the grid.

Main dataAnimal manure . . . . . . . . . . . . . . . . . . . . 42 tons /dayAlternative biomass . . . . . . . . . . . . . . . . . 17 tons/dayBiogas production . . . . . . . . . . . . . 2.1 mill. Nm3/yearDigester capacity (4 × 230 m3) . . . . . . . . . . . . 920 m3

Process temperature . . . . . . . . . . . . . . . . . . . . . 55°CSanitation . . . . . . . . . . . . . MGRT of 3 hours at 55°CGas storage capacity . . . . . . . . . . . . . . . . . . . 148 m3

Transport vehicle . . . . . . . . . . . 20 m3 vacuum tankerAverage transport distance . . . . . . . . . . . . . . . . 5 kmUtilisation of biogas. . . . . . . . . . CHP-plant/gas boilerInvestment cost1 . . . . . . . . . . . . . . . . . 13.4 mill. DKKGovernment grant . . . . . . . . . . . . . . . . 2.9 mill. DKKContractor . . . . . . . . WWW.Engineering Ltd./VeggerOperation start-up . . . . . . . . . . . . . . . . . . . . . . . 1986

1. Incl. wind turbine.


Davinde

Straw firedboiler

Tractor

Pre-storagetank

Digester

Storagetank

Gas-firedboiler

Straw

Org. waste Slurry

FertiliserProcessheating

Districtheating

Davinde biogas plant, built in 1987, is owned byDavinde Energiselskab A.m.b.a., which was the firstexample of co-operation between farmers to estab-lish and operate a centralised biogas plant. The co-operative also operates a straw-fired heating system.

The co-operative, having 11 farmers as members, ofwhich 6 also are slurry suppliers, was establishedwith the aim of producing renewable energy fromthe supplied animal manure and straw from themembers, and to sell the energy produced.

The manure is supplied from 3 pig farms and 3 cattlefarms, and is mixed with small amounts of sludgeand fish waste from 2 fish processing industries inthe area. Two of the manure suppliers are also strawsuppliers. The process is mesophilic (36°C) andtakes place in a single reactor. No heat exchangetakes place. Justified by the modest number of slurrysuppliers and the types of alternative biomass addedto the slurry, the biomass mixture is not sanitised.

The plant is of small scale and rather simple, whichhas helped to keep operational costs low. The agri-cultural advantages of the biogas plant consist ofbetter distribution of manure and nutrients in the areaand less odour nuisance when spreading. The ho-mogenous and liquid consistency of digested bio-mass makes it suitable for applying with dragginghoses, with less loss of ammonia and nutrients.Each year the excess manure is sold to the arablefarms in the area.

The biogas is used in a gas fired boiler to heat pro-duction. The heat is supplied to Davinde district heat-ing system and a small part is used for process heat-ing. A 11 MW straw fired furnace covers the remain-ing heat requirement.

Main dataAnimal manure . . . . . . . . . . . . . . . . . . . . 25 tons /dayAlternative biomass . . . . . . . . . . . . . . . . . 3 tons/ dayBiogas production . . . . . . . . . . . . . 0.3 mill. Nm3/yearDigester capacity . . . . . . . . . . . . . . . . . . . . . . 750 m3

Process temperature . . . . . . . . . . . . . . . . . . . . . 36°CGas storage capacity . . . . . . . . . . . . . . . . . . . . 30 m3

Utilisation of biogas . . . . . . . . . . . . . . Gas fired boilerTransport vehicle . . . . . Tractor/14 m3 vacuum tankerAverage transport distance . . . . . . . . . . . . . . . 5.7 kmInvestment cost1 . . . . . . . . . . . . . . . . . . 5.8 mill. DKKGovernment grant . . . . . . . . . . . . . . . . 1.9 mill. DKKContractor . . . . . . . . . . . . . . . . . . . . . . . . Krüger Ltd.Operation start-up . . . . . . . . . . . . . . . . . . . . . . . 1988



Sinding - Ørre

Pre-storagetank

Mixingtank

Pre-storagetank

Digester

Storagetank

Separation

Sanitationtank

Digester

CHPunit

Gastreatment

Gas firedboiler

Bleachingclay

SlurryOrg.waste

Solidmanure

Org. householdwaste

Plastic/fibrefor combustion

Fertiliser Processheating


Districtheating

The biogas plant in Sinding was built in 1987-88 andis owned and operated by Herning Municipal Utilities.The construction of the plant is part of the energypolicy of the Municipality of Herning to displace fossilfuels by local renewable energy sources

Together with the biogas plant, 31,500 m3 storagecapacity for digested biomass was built. The storagetanks are owned by Herning Municipal Utilities andthe 34 slurry suppliers can rent the needed capacity,in order to meet the legal requirement of slurry stor-age. The suppliers receive back digested biomassaccording to their needs and the surplus is sold tothe crop farms in the area. The transport and distri-bution of digested biomass is done by the associa-tion of the slurry suppliers.

The digestion process is thermophilic, at 51°C, andtakes place on two separate flow-lines. One of thelines processes animal slurry and organic waste fromfood processing industries in two of the threedigesters. The slurry consists of 40 % cattle slurryand 60 % pig slurry. The organic waste mainly con-sists of intestinal content from abattoirs, dairy waste,bleaching clay from vegetable oil industry and otherorganic wastes. Pathogen reduction is ensured by aguaranteed retention time of 4 hours at the processtemperature of 51°C.

The second flow-line processes organic householdwaste. The household waste is mixed with slurry anddigested in a separate digester. Before digestion, the

mixture is sanitised at 60°C for 2½ hours, accordingto the prescription of the law. A separation processremoves plastic and other unwanted items from thebiomass.

Herning Municipal Utilities have developed the sys-tem for treating household waste, and is holding anEuropean patent on this.

90 % of the biogas production is utilised at a CHP-plant, in two biogas engines, producing 400 kW elec-tricity to the grid and 700 kW heat, used for heatingthe biogas process and the main part sold to the dis-trict heating system of the City of Herning. The re-maining 10 % biogas is utilised in a 730 kW biogasboiler at Sinding district heating plant.

Main dataAnimal manure . . . . . . . . . . . . . . . . . . . 117 tons/dayAlternative biomass . . . . . . . . . . . . . . . . 18 tons/dayBiogas production . . . . . . . . . . . . . . 2.4 mill Nm3/yearDigester capacity (3 × 750 m3) . . . . . . . . . . . 2250 m3

Process temperature . . . . . . . . . . . . . . . . . . . . . 51°CSanitation (slurry) . . . . . . . . . . MGRT 4 hours at 51°CSanitation (household waste) . MGRT 2,5 hours at 60°CGas storage capacity . . . . . . . . . . . . . . . . . . . 150 m3

Utilisation of biogas. . . . . . . . . . CHP-plant/gas boilerTransport vehicle . . . . . . . 2 × 13 m3 vacuum tankersAverage transport distance . . . . . . . . . . . . . . . . 5 kmInvestment cost1 . . . . . . . . . . . . . . . . . 26.2 mill. DKKGovernment grant . . . . . . . . . . . . . . . . . 8.9 mill. DKKContractor . . . . . . . . . . . . . . . Bruun & Sørensen Ltd.Operation start-up . . . . . . . . . . . . . . . . . . . . . . . 1988

1. Incl. storage capacity.

Fangel biogas plant was built in 1988-89. Theplant underwent major reconstruction in 1999,which significantly improved performance andoperational stability. The owner is Fangel Miljø-&Energiselskab A.m.b.a., with 26 slurry suppliers asmembers. The aim of the co-operative is to find aneconomically viable solution to the environmentalproblems related to the storage, handling and dis-tribution of slurry from the intensive animal produc-tion of the area.

The plant is mesophilic (37°C), processing pig andcattle slurry and small amounts of poultry and minkslurry from 26 animal farms from the area. In additionto slurry, intestinal content and flotation sludge fromabattoir, dairy waste, waste from the food processingindustry, the tannery industry and the medicinal in-dustry is supplied. The biomass is heated throughthe heat exchanger system and sanitised at 60°C for3½ hours, before digestion.

After digestion, a part of the digested biomass isseparated into fibre and liquid fractions. The liquidfraction is used in the biological gas purification filter.The main part of the digested biomass is transportedto the de-centralised storage tanks, close to thefields. The co-operative has built 23 de-centralisedstorage tanks with a total capacity of 25000 m3. Bulkbuying of the tanks gave a significant price discountfor the farmers. The surplus of digested biomass issold each year to the crop farmers in the neighbour-hood.

Haulagecontractor

Pre-storagetank

Haulagecontractor

Pre-storagetank

Lorrycontainer

Vacuumtanker

Mixing/buffertank

Intermediatetank

Sanitationtank

DigesterBiogasfilterCHPunit

Storagetank

Gas-storage

Gas-firedboiler

Org. wasteliquid

Org. wastesolid

Intestinalcontent

Slurry


Districtheating


Districtheating

Fangel


Main dataAnimal manure . . . . . . . . . . . . . . . . . . . 124 tons/dayAlternative biomass . . . . . . . . . . . . . . . . . 19 tons/dayBiogas production . . . . . . . . . . . . . 2.2 mill. Nm3/yearDigester capacity1. . . . . . . . . . . . . . . . . . . . . 3750 m3

Process temperature . . . . . . . . . . . . . . . . . . . . . 37°CPasteurisation. . . . . . . . . . . MGRT 3,5 hours at 60°CGas storage capacity . . . . . . . . . . . . . . . . . . . . 50 m3

Utilisation of biogas. . . . . . . . . . CHP-plant/gas boilerBiomass transport vehicle . . . . 20 m3 vacuum tankerAverage transport distance . . . . . . . . . . . . . . . 6.5 kmInvestment cost2 . . . . . . . . . . . . . . . . . 25.3 mill. DKKGovernment grant . . . . . . . . . . . . . . . 10.0 mill. DKKContractor . . . . . . . . . . . . . . . . . . . . . . . . Krüger Ltd.Operation start-up . . . . . . . . . . . . . . . . . . . . . . . 1989

1. 2 × 1600 m3 + 550 m3.


The biogas plant is equipped with its own CHP - unit,where the biogas is used in a 1500 kW engine toproduce electricity and heat. Any overproduction ofbiogas is used in a biogas fired boiler. The heat issold to Odense Municipal District Heating and theelectricity is sold to the grid.


Ribe

Lorry

Mixingtank

Vacuumtanker

Pre-storagetank

Digester

Decentralisedstorage tank

CHPplant

Gas-firedboiler

Slurry Abattoirwaste

Org. waste

Districtheating

Processheating

Fertiliser Electricityto the grid

Ribe Biogas Plant was built in 1989-90 and startedoperating in 1990. The plant is owned by RibeBiogas Ltd. The owners are the slurry supplyingfarmers, a food processing company that suppliesorganic waste to the plant, the regional power com-pany and two investment companies. The aim ofRibe Biogas Ltd. is to establish and operate a biogasplant and to develop and promote biogas productiontechnologies.

The biogas plant contributes to solving some majorenvironmental and agricultural problems in the area,related to handling, storage and redistribution of ani-mal manure, and brings some economic advantagesfor the farmers.

The plant receives cattle, pig, poultry and mink slurryfrom 69 livestock farms. The slurry is mixed andco-digested with intestinal content from abattoirs, di-gestible fatty organic wastes from food and fish pro-cessing industries and from medicinal industry andwith sludge from poultry abattoir. The digestion tem-perature is 53°C (termophilic). A minimum guaran-teed retention time of 4 hours at 53°C ensures effi-cient sanitation of digested biomass.

The digested biomass is returned to the slurry suppli-ers as a pathogen free, nutritionally declared, liquidfertiliser. The surplus is sold to about 72 crop farm-ers in the area. 25 decentralised storage tanks for di-gested biomass, with a total capacity of 50,000 m3,are shared by the slurry suppliers. The storage tanks

are placed close to the fields where the fertiliser is tobe applied. This has significantly reduced the costand time consumption for transport and has enlargedthe application area for digested biomass. The tankswere constructed with 40 % investment grant fromthe Ministry of Agriculture.

The biogas is piped via a low pressure transmissionsystem to the new CHP-plant at Ribe. The plant sup-plies the city of Ribe with electricity and heat, andwas established in 1996/97, to replace three earliercoal-fired CHP- units. The gas engine is fuelled witha mixture of biogas and natural gas (dual-fuel). Thebiogas fuel has first priority.

Main dataAnimal manure . . . . . . . . . . . . . . . . . . . 352 tons /dayAlternative biomass . . . . . . . . . . . . . . . . 68 tons/ dayBiogas production . . . . . . . . . . . . . 4.8 mill. Nm3/yearDigester capacity (3 × 1745 m3) . . . . . . . . . . 5235 m3

Process temperature . . . . . . . . . . . . . . . . . . . . . 53°CSanitation . . . . . . . . . . . . . . . MGRT 4 hours at 53°CGas storage capacity . . . . . . . . . . . . . . . . . . 1000 m3

Utilisation of biogas. . . . . . . . . . CHP-plant/gas boilerTransport vehicle. . . . . . . . . . . . 3 × vacuum tankers1

Average transport distance . . . . . . . . . . . . . . . 11 kmInvestment cost2 . . . . . . . . . . . . . . . . . 45.3 mill. DKKGovernment grant . . . . . . . . . . . . . . . . 12.9 mill. DKKEEC-grant . . . . . . . . . . . . . . . . . . . . . . . 4.8 mill. DKKContractor . . . . . . . . . . . . . . . . . . . . . . . . Krüger Ltd.Operation start-up . . . . . . . . . . . . . . . . . . . . . . . 1990

1. 2 × 20 m3 +1 × 30 m3.



Lintrup

Pre-storage/tank medicinal

waste

Digester

Post-digester/Biogas storage

Gas firedboiler

Pre-storage/tank org.

waste

Pre-storagetank slurry

Biogastreatment

CHP-plant

Storagetank

Fertiliser Districtheating

Processheating


The centralised co-digestion plant in Lintrup is one ofthe largest biogas plants in the world. It was built in1989-90 and rebuilt in 1999, when the plant con-verted from mesophilic to thermophilic process and apost-digestion phase was established. This way, thepotential of biogas production of the plant was in-creased by almost 50 %.

The plant is owned by LinkoGas A.m.b.a., an inde-pendent co-operative society with 66 farmers, theslurry suppliers, as members. The main aim ofLinkoGas is to build and operate a manure basedcentralised co-digestion plant and thus to assistco-operative members in solving their problems con-cerning the legal demands of slurry storage capacity,handling and redistribution of the excess slurry andreduction of odour nuisance from slurry application.

The plant receives slurry and solid manure, consistingof 53 % cattle and 47 % pig slurry, supplemented bydigestible organic waste from fish and food processingindustries, medicinal industry, abattoir intestinal contentand sewage sludge from a waste water treatment plant.The biomass is heated to process temperature throughthe heat exchanging system. Admixture of sewagesludge implies the pasteurisation of the biomassfeedstock. This is achieved through a minimum guaran-teed retention time of 10 hours at the process tempera-ture of 53°C, ensuring a pathogen reduction equivalentto pasteurisation. After thermophilic digestion, the bio-mass is pumped to an insulated post-digestion tank,where digestion continues at 42°C.

The slurry suppliers receive the amount of digestedbiomass corresponding to the nutrient consumptionof their crops. The surplus, about 30 % of the di-gested biomass, is sold to 50 crop farms in the area.The biomass is transported directly to the 78 decen-tralised storage tanks, located close to the fieldswhere the digested biomass will be applied.

The biogas is piped via a low pressure gas transmis-sion system to Rødding CHP- plant and utilised intwo biogas engines to produce electricity ( max.2037 kW) and district heating (max. 2600 kW). At thebiogas plant, a combined biogas and oil fired boilerof 0,5 MW uses biogas for process heating.

Main dataAnimal manure . . . . . . . . . . . . . . . . . . . 410 tons /dayAlternative biomass . . . . . . . . . . . . . . . 137 tons/ dayBiogas production . . . . . . . . . . . . . 5.7 mill. Nm3/yearDigester capacity (3 × 2400 m3) . . . . . . . . . . 7200 m3

Process temperature . . . . . . . . . . . . . . . . . . . . . 53°CPost-digestion capacity. . . . . . . . . . . . . . . . . 2500 m3

Post-digestion temperature . . . . . . . . . . . . . . . . 42°CGas storage capacity . . . . . . . . . . . . . . . . . . 1000 m3

Utilisation of biogas. . . . . . . . . . CHP-plant/gas boilerTransport vehicle . . . . . . . 3 × 20 m3 vacuum tankersAverage transport distance . . . . . . . . . . . . . . . 7.5 kmInvestment cost1 . . . . . . . . . . . . . . . . . 43.6 mill. DKKGovernment grant . . . . . . . . . . . . . . . 16.8 mill. DKKContractor . . . . . . . . . . . . . . . . . . . . . . . . Krüger Ltd.Operation start-up . . . . . . . . . . . . . . . . . . . . . . . 1990



Lemvig

Haulagecontractor

Digester

Sanitation/pasteurisation

tank

Externalprocess heat

Mixingtank

Biogasstorage

Dosingtank

CHP-plant

Storagetank

Abattoirwaste

Org.waste

Slurry

Sewagesludge



Lemvig Biogas Plant is one of the largest biogasplants in the world. It was built in 1991/92 and isowned by Lemvig Biogasanlæg A.m.b.a. The mem-bers are the farmers supplying slurry to the plant.The aim of the co-operative is to build and operate abiogas plant that co-digests slurry, organic wastefrom food processing industries and sewage sludgeand thus to help farmers solve the problems relatedto the storage and handling of slurry.

The plant receives slurry from 80 suppliers, 10 sum-mer suppliers, and a variable number of occasionalsuppliers. The slurry consists of 40 % cattle, 59 %pig and 1 % mink and poultry slurry. The farmers re-ceived 40 % investment grants to built 60 decentral-ised storage tanks for digested biomass, correspond-ing to 9-12 months storage capacity. Six supplemen-tary storage tanks were build close to the biogasplant, with a total capacity of 18,000 m3.

About 20 % of the digested biomass is sold to thecrop farmers in the neighbourhood. Each slurry sup-plier receives back digested biomass equivalent withthe livestock supplied. He is responsible for redistri-bution of the excess of slurry and for making theagreements with the crop farmers, while the biogasplant delivers it cost free.

The digestion temperature is 52,5°C (thermophilic).The biomass is heated up partially through heat ex-changing and partially by using the excess heat froma wood industry line in the neighbourhood. The co-

digestion of sewage sludge imposes effective pas-teurisation of the biomass mixture, which takes placein the sanitation tanks. A retention time of min. 10hours at min. 52.0°C ensures effective pathogen re-duction.

The biogas produced is transported via 4.3 km lowpressure pipe line to Lemvig CHP- plant and con-verted to electricity and heat.

Main dataAnimal manure . . . . . . . . . . . . . . . . . . . 362 tons /dayAlternative biomass . . . . . . . . . . . . . . . . 75 tons/ dayBiogas production . . . . . . . . . . . . . . 5.4 mill Nm3/yearDigester capacity (3 × 2533 m3) . . . . . . . . . . 7600 m3

Process temperature. . . . . . . . . . . . . . . . . . . . 52.5°CSanitation . . . . . . . . . . . . . . MGRT 10 hours, at 52°CGas storage capacity . . . . . . . . . . . . . . . . . . 5000 m3

Utilisation of biogas . . . . . . . . . . . . . . . . . . CHP-plantTransport vehicle1. . . . . . . . . . vacuum tankers/trailerAverage transport distance . . . . . . . . . . . . . . . 7.5 kmInvestment cost1 . . . . . . . . . . . . . . . . . 55.2 mill. DKKGovernment grant . . . . . . . . . . . . . . . . 14.2 mill. DKKContractor. . . . . . . . . . . . . . . . . . . . . . . . . BWSC Ltd.Operation start-up . . . . . . . . . . . . . . . . . . . . . . . 1992

1. 3 × 20 m3 vacuum tankers and one 14 m3 trailer.



Hodsager

Tractor/vacuum tanker

Pre-storageslurry

DigesterStorage tank

digestedbiomass

Pre-storageorganic waste

Haulagecontractor

Gas/oil firedboiler

CHPunit

GasStorage

Biogaspurification

Storagetank

Wood firedboiler

Organic waste

Wood chips

Slurry

FertiliserDistrictheating


Districtheating

The Biogas Plant in Hodsager was built in 1993 andis owned by a local co-operative society, HodsagerEnergiselskab A.m.b.a., with the heat consumersand the slurry suppliers as members. The aim of theco-operative society is to build and operate a biogasplant to utilise the slurry and the digestible biomassresources of the local area to produce biogas forelectricity and heat generation.

The plant receives slurry from 6 livestock farms inthe area, consisting of 83 % cattle slurry and 17 %pig slurry. The slurry is co-digested with intestinalcontent from a pig abattoir and with fatty waste fromfish processing industries and other organic waste.The process temperature is 37°C (mesopihilic). Dueto the small number of suppliers and the types offeedstock, there is no further sanitation of the sup-plied biomass. The content of macro-nutrients andthe dry matter content in the digested biomass isanalysed before returning it to the slurry suppliers’storage tanks.

The biogas plant is equipped with its own CHP-unit,consisting of a gas engine (640 kW- input power /220kW- electric power) and a wood chip boiler. The elec-tricity produced is sold to the grid. 141 heat consum-ers in Hodsager town are supplied with heat via thenewly established district heating net. The gas motorcovers 45 % of the heat consumption, supplementedby the wood chip boiler. A standby biogas/oil firedboiler is used during the peak heat consumption andin cases of engine failure.

Main dataAnimal manure . . . . . . . . . . . . . . . . . . . . 42 tons /dayAlternative biomass . . . . . . . . . . . . . . . . . 6 tons/ dayBiogas production . . . . . . . . . . . . . 0.7 mill. Nm3/yearDigester capacity (2 × 440 m3) . . . . . . . . . . . . 880 m3

Process temperature . . . . . . . . . . . . . . . . . . . . . 37°CGas storage capacity . . . . . . . . . . . . . . . . . . . 100 m3

Utilisation of biogas. . . . . . . . . . CHP-plant/gas boilerTransport vehicle . . . . . Tractor/16 m3 vacuum tankerAverage transport distance . . . . . . . . . . . . . . . . 3 kmInvestment cost1 . . . . . . . . . . . . . . . . . 19.2 mill. DKKGovernment grant . . . . . . . . . . . . . . . . 3.9 mill. DKKTotal design and consultancy . . . . . . . . . NIRAS Ltd.Operation start-up . . . . . . . . . . . . . . . . . . . . . . . 1993

1. Incl. district heating network and consumers connections.


Hashøj

Vacuumtanker

Haulagecontractor

Pre-storagetank

Mixingtank

Pasteurisationtank

Digester

CHPplant

Gas storage/Biomassstorage

Gas-firedboiler

Org. wasteSlurry


Districtheating


The centralised biogas plant in Hashøj is owned byan independent co-operative, Hashøj BiogasA.m.b.a, with 17 members, all farmers and slurrysuppliers. The aim of the co-operative was to buildand operate a biogas plant to facilitate redistributionof animal slurry in the area and to provide investmentgrants for the establishment of slurry storage capaci-ties. The plant is part of the demonstration pro-gramme for Danish biogas plants, aiming to demon-strate combined biogas-natural gas fuelled CHP-plant.

The biogas plant receives slurry from 10 pig farmsand 6 cattle farms in the area. The process tempera-ture is mesophilic, at 37°C. The biomass mixtureconsists of cattle and pig slurry, intestinal contentfrom pig abattoirs, fat and flotation sludge from pigabattoirs, fish and food processing industries, dairiesetc. Before digestion, the biomass mixture passesthrough the pasteurisation tanks for one hour, whereeffective pathogen reduction is ensured at 70°C.

The farmers have overall positive experience of us-ing digested biomass as fertiliser. The product smellsless, is sanitised, homogenous and with a definedcontent of nutrients, which makes it easy to handleand to integrate in their individual fertiliser plans.15-20 % of the digested biomass is sold each year on acontract basis to 5 crop farms in the neighbourhood.

The biogas produced is utilised for CHP- productionat the newly established plant in Dalmose, where two

biogas and natural gas fuelled engines supply 380consumers in Dalmose and Flakkebjerg with elec-tricity and heat. The biogas represents about 38% ofthe fuel consumption.

During the running-in period, Hashøj biogas planthad a five year operational service managementagreement with the plant suppliers, Krüger A/S, at afixed annual price.

Main dataAnimal manure . . . . . . . . . . . . . . . . . . . 100 tons /dayAlternative biomass . . . . . . . . . . . . . . . . 38 tons/ dayBiogas production . . . . . . . . . . . . . . 3.0 mill Nm3/yearDigester capacity . . . . . . . . . . . . . . . . . . . . . 3000 m3

Process temperature . . . . . . . . . . . . . . . . . . . . . 37°CPasteurisation . . . . . . . . . . . . . MGRT 1 hour at 70°CGas storage capacity . . . . . . . . . . . . . . . . . . 2200 m3

Utilisation of biogas. . . . . . . . . . CHP-plant/gas boilerTransport vehicle . . . . . . . One 20 m3 vacuum tankerAverage transport distance . . . . . . . . . . . . . . . . 4 kmInvestment cost1 . . . . . . . . . . . . . . . . . 21.8 mill. DKKGovernment grant . . . . . . . . . . . . . . . . 5.1 mill. DKKContractor . . . . . . . . . . . . . . . . . . . . . . . . Krüger Ltd.Operation start-up . . . . . . . . . . . . . . . . . . . . . . . 1994



Thorsø

Pasteurisation Mixingtank

DigesterPost-sanitation

Biogas storage/Biomassstorage

Biogastreatment

De-centralisedstorage tank

CHPplant

Sewagesludge

Org.waste

Slurry



Thorsø Biogas Plant was built in 1993-94. The plantis owned by Thorsø Miljø- og Biogasanlæg A.m.b.a.,and the owners are the farmers supplying slurry tothe plant. The aim of the co-operative is to supplyThorsø town with renewable energy and at the sametime improve the environmental aspects of agricul-tural practice in the area. The biogas plant contrib-utes to redistribution of excess animal manure fromthe intensive animal husbandry in the region, and of-fers a cheap and sound recycling alternative for arange of suitable organic waste types.

The plant receives slurry and solid manure from 75livestock farms, consisting of 40% cattle slurry and60% pig slurry and small amounts of poultry manure.The slurry is mixed and co-digested with intestinalcontent from pig and cattle abattoirs and with fattywaste from food and fish processing industries, andsewage sludge. Before mixing with the rest of thebiomass, the sewage sludge is pasteurised sepa-rately, for 1 hour at 70°C. The digestion temperatureis 53°C (termophilic). A minimum guaranteed reten-tion time of 3½ hours at 53°C ensures efficient sani-tation. Digested biomass is a pathogen free, nutri-tionally declared, liquid fertiliser.

The slurry suppliers received 40% investment grantsto establish 9 month storage capacity for digestedbiomass, as required by law. The storage tanks areplaced close to the fields where the slurry is applied.The farmers obtain cost savings for the transport ofslurry and have the possibility to apply the fertiliser

on a larger area. About 30% of the digested biomassis sold to crop farmers every year.

The biogas is piped, via a low pressure transmissionsystem to the new CHP- plant at Thorsø. The CHP-plant is the first one in Denmark equipped with a gasengine that can be fuelled either with pure biogas, orpure natural gas or a mixture of both. Biogas alwayshas first priority.

Main dataAnimal manure . . . . . . . . . . . . . . . . . . . 230 tons /dayAlternative biomass . . . . . . . . . . . . . . . . 31 tons/ dayBiogas production . . . . . . . . . . . . . . 2.9 mill Nm3/yearDigester capacity (2 × 2325 m3) . . . . . . . . . . 4650 m3

Process temperature . . . . . . . . . . . . . . . . . . . . . 53°CGas storage capacity . . . . . . . . . . . . . . . . . . 2790 m3

Utilisation of biogas . . . . . . . . . . . . . . . . . . CHP-plantTransport vehicle . . . . . . . 3 × 20 m3 vacuum tankersAverage transport distance . . . . . . . . . . . . . . . 7.5 kmInvestment cost1 . . . . . . . . . . . . . . . . . 29.1 mill. DKKGovernment grant . . . . . . . . . . . . . . . . . 6.3 mill. DKKContractor BWSC Ltd.Operation start-up . . . . . . . . . . . . . . . . . . . . . . . 1994



Århus Nord

Pre-storagetank

Sanitationtank

Pre-storagetank

Pasteurisationtank

Digestertermophilic

Digestermesophilic

Gastreatment

Storagetank

Pre-storagetank

Organicwaste

Householdwaste

Slurry

Fertiliser

Electricity to the grid

Districtheating

Processheating

CHPgeneration

The biogas plant, built in 1994, is owned by ÅrhusMunicipality and operated by Århus Municipal Util-ities. Its main function is production of biogas to fuelthe CHP unit.

70 farmers supply slurry to the plant, consisting of85% pig slurry and 15 % cattle slurry. The plantalso receives intestinal content from abattoirs, flota-tion and protein sludge, waste from the medicinalindustry, vegetable waste from agro-industries, tan-nery waste, and source separated, organic house-hold waste. The plant is equipped with heat ex-changers.

The process is divided into two flow- lines. The mainflow-line is mesophilic, at 38°C, and co-digests slurryand organic waste. The biomass mixture is pre-sani-tised at 58°C for 6-8 hours. The secondary flow-lineis thermophilic, at 52°C, and processes householdwaste, slurry and some types of organic waste. Be-fore digestion, the biomass mixture is pasteurised at70°C for one hour. The digested biomass mixture isstored in the four storage tanks with a total capacityof 16,200 m3, and transported to the storage tanks ofthe slurry suppliers as a nutritionally declared ferti-liser. The slurry suppliers’ association is responsiblefor transport of the fresh and digested slurry. About10% of the digested biomass is sold to 15 crop farmsfrom the area. The transport of digested biomass isfree of charge for the crop farms located within a 10km radius, and a fee of 7 DKK/km is paid outside thisradius.

The gas is collected in a double membrane gasholder and used in 3 × 1315 kW gas engines toCHP-generation. In order to be used in the gas en-gine, the sulphur is removed from the biogas to alevel under 500 ppm, by passing the gas through abiological filter. The plant supplies 1100 householdswith district heating while the electricity produced issold to the grid. About 20% of the heat is used asprocess heat.

Main dataAnimal manure . . . . . . . . . . . . . . . . . . . 346 tons /dayAlternative biomass . . . . . . . . . . . . . . . . 46 tons/ dayBiogas production . . . . . . . . . . . . . . 3.8 mill Nm3/yearDigester capacity1. . . . . . . . . . . . . . . . . . . . . 8500 m3

Process temperature slurry + org. waste . . . . . . 38°CProcess temperature household waste. . . . . . . . 52°CPasteurisation household waste. . MGRT 1 hour at 70°CSanitation . . . . . . . . . . . . . . MGRT 6-8 hours at 58°CGas storage capacity . . . . . . . . . . . . . . . . . . . 370 m3

Utilisation of biogas . . . . . . . . . . . . . . . . . . CHP-plantTransport vehicle . . . . . . . 4 × 20 m3 vacuum tankersAverage transport distance . . . . . . . . . . . . . . . 5.5 kmInvestment cost2 . . . . . . . . . . . . . . . . . 54.2 mill. DKKGovernment grant . . . . . . . . . . . . . . . . 10,8 mill. DKKContractor . . . . . . . . . . . . . . . . . . . . C.G. Jensen Ltd.Operation start-up . . . . . . . . . . . . . . . . . . . . . . . 1995

1. 2 × 3600 m3 + 1 × 1300 m3



Filskov

Vacuumtanker

Pre-storagetank

Gasstorage

Lorrycontainer

Pre-storagetank

Digester

Coveredstorage tank


CHPunit

Org. wastesolid

Intestinalcontent

Slurry

FertiliserDistrictheating


The Biogas Plant in Filskov was built in 1995 and isowned by a local co-operative company, FilskovEnergiselskab A.m.b.a. The owners are the heat con-sumers and the slurry suppliers. The primary functionof the plant is to produce biogas by anaerobic diges-tion of the digestible biomass resources of the area.

The plant was built in two phases. The first was theestablishment in 1992/93 of a wood chip boiler, thedistrict heating system and the district heating unitsin the houses (investment cost 12.0 mill. DKK). Thesecond was the construction of the biogas plant, theCHP-plant in 1995, the decentralised storage tanksfor digested biomass, the purchase of slurry trans-port vehicles etc ( investment cost 11.2 mill. DKK).

The plant receives slurry from 11 livestock farms inthe area, consisting of 95% cattle slurry and 5% pigslurry. The slurry is co-digested with intestinal con-tent from cattle and pig abattoirs and with fatty wastefrom poultry and fish processing industries. The pro-cess temperature is 53°C (thermophilic). The hydrau-lic retention time is 10 days, followed by 35 dayspost-digestion in a 3000 m3 storage tank, coveredwith a gas-tight membrane. A minimum guaranteedretention time of 4 hours at the process temperatureensures effective pathogen reduction in the digestedbiomass. Before returning it to the storage tanks ofthe slurry suppliers or to the three shared decentral-ised storage tanks, the content of macro-nutrientsand the dry matter content in the digested biomassare analysed.

The biogas is used at the plant CHP-unit in a 375 kWelectric power gas engine. The heat is supplied toFilskov town to 140 consumers, via the new estab-lished district heating net, and the electricity is soldto the grid. The biogas motor supplies 45% of theheat consumption. The rest is supplied by the 1000kW wood chip boiler. A standby 1600 kW gas and oilfired boiler covers the peak heat consumption duringcold winters, and is used in case of engine break-downs.

Main dataAnimal manure . . . . . . . . . . . . . . . . . . . . 61 tons /dayAlternative biomass . . . . . . . . . . . . . . . . . 18 tons/dayBiogas production . . . . . . . . . . . . . 1.3 mill. Nm3/yearDigester capacity (2 × 440 m3) . . . . . . . . . . . . 880 m3

Process temperature . . . . . . . . . . . . . . . . . . . . . 53°CSanitation . . . . . . . . . . . . . . . MGRT 4 hours at 53°CBiomass storage . . . . . . . . . . . . . . . . . . . . . . 3000 m3

Gas storage capacity . . . . . . . . . . . . . . . . . . . 100 m3

Utilisation of biogas. . . . . . . . . . CHP-plant/gas boilerTransport vehicle . . . . . . . . . . . 20 m3 vacuum tankerAverage transport distance . . . . . . . . . . . . . . . . 4 kmInvestment cost1 . . . . . . . . . . . . . . . . . 23.2 mill. DKKGovernment grant . . . . . . . . . . . . . . . . 2.5 mill. DKKTotal design and consultancy . . . . . . . . . NIRAS Ltd.Operation start-up . . . . . . . . . . . . . . . . . . . . . . . 1995

1. Incl. storage capacity, district heating network and installations.


Studsgaard

Pre-storagetank

Pre-sanitationtank

Digester2

Post-sanitationtank

Separation

Pre-storagetank

Pre-storagetank

Digester1

Post-sanitationtank

Storagetank

Gas storage

Org. householdwaste

Slurry Org. waste

CHPgeneration

CHPgeneration

Fertiliser

Studsgaard biogas plant was built in 1995, as a re-sult of Herning Municipality’s energy policy of dis-placement of fossil fuel by local renewable energysources. The lay-out of the plant is based on thepositive experience with Sinding - Ørre biogas plant.Both plants are owned and operated by Herning Mu-nicipal Utilities.

The main function of the plant is to produce biogasfor heat and power generation by anaerobic diges-tion of slurry and digestible biomass resources, aswell as to solve the problem of storage and redistri-bution of slurry in the area.

49 farmers supply slurry to the biogas plant, consistingof 22 % cattle and 78 % pig slurry. Five of the farms areconnected to the plant by a slurry transport pipelinesystem. At the plant the slurry is mixed and co-digestedwith organic waste from food processing industries andwith source separated organic household waste.

The household waste is mixed with slurry to make itliquid. The mixture is heated to 60°C for 2½ hours,before is pumped into a digester. After digestion, asimple separation removes plastic and other un-wanted items from the household waste, guarantee-ing a clean fertiliser to the farmers, without non-or-ganic content. The digested household waste ismixed with the rest of the digested biomass andtransported to the farmers’ de-centralised storagetanks close to the fields where digested slurry is tobe applied.

Herning Municipal Utilities have developed the sys-tem for treating household waste, and is holding anEuropean patent on this.

The produced biogas is utilised at Herning- CHPplant for heat and power generation, in a 3370 kWgas engine. The produced electricity is sold to thegrid and the heat is distributed through the districtheating system of the City of Herning.

Main dataAnimal manure . . . . . . . . . . . . . . . . . . . 230 tons /dayAlternative biomass . . . . . . . . . . . . . . . . . 36 tons/dayBiogas production . . . . . . . . . . . . . . 5.7 mill Nm3/yearDigester capacity (2 × 3000 m3) . . . . . . . . . 6000 m3

Process temperature . . . . . . . . . . . . . . . . . . . . . 52°CSanitation . . . . . . . . . . . . . . MGRT 2.5 hours at 60°CGas storage capacity . . . . . . . . . . . . . . . . . . . 170 m3

Utilisation of biogas . . . . . . . . . . . . . . . . . . CHP-plantTransport vehicle . . . . Vacuum tankers/slurry pipelinesAverage transport distance . . . . . . . . . . . . . . . . 5 kmInvestment cost1 . . . . . . . . . . . . . . . . . 55.7 mill. DKKGovernment grant . . . . . . . . . . . . . . . . 13.9 mill. DKKContractor . . . Herning Municipal Utilities/HedeselskabetOperation start-up . . . . . . . . . . . . . . . . . . . . . . . 1996



Blåbjerg

Dosing tank

Sanitation Digester

Pre-storage/buffer tank

Biogastreatment

Mixingtank

Gasstorage

Fibreseparation

CHP-plant

Storagetank

Liquidorg. waste

Solid org.waste

Slurry

Sewagesludge

Fertiliser Processheating

Districtheating


The centralised co-digestion plant in Blåbjerg wasbuilt in1995-96 and started up in marts 1996. Theplant is owned by Blåbjerg Biogas A.m.b.a., whosemembers are the slurry-supplying farmers. The plantwas established with the aim of supplying NørreNebel town with renewable energy, as well as tocontribute to better distribution of excess manurefrom the intensive animal husbandry in the area.

The biogas plant receives cattle and pig slurry from49 suppliers. The slurry is mixed and co-digestedwith organic waste from food processing, fish pro-cessing, dairy and medicinal industry, and sewagesludge. The biomass mixture is heated up to the pro-cess temperature trough the heat exchanger system.

The Blåbjerg plant concept includes some new solu-tions, attempting to make the plant more adaptableto various feedstock and to the environmental pro-tection requirements. Through a combination ofbuffer tanks and pumping sequences, the biomasshas a guaranteed retention time of 8 hours at theprocess temperature of 53.5°C. This ensures effec-tive pathogen reduction and allows the plant to treatsewage sludge. After digestion, the fibre fraction isseparated and used in the CHP unit for heat produc-tion, and the liquid fraction is returned to the farmersas a nutritionally defined fertiliser.

The biogas is utilised in two gas engines ( 3740 kW)at the new CHP plant at Nørre Nebel. The heat isdistributed through the district heating system to 550

heat consumers in town and the electricity is sold tothe grid.

Main dataAnimal manure . . . . . . . . . . . . . . . . . . . 222 tons/dayAlternative biomass . . . . . . . . . . . . . . . . . 87 tons/dayBiogas production . . . . . . . . . . . . . 3.1 mill Nm3/yearDigester capacity (2 × 2500 m3) . . . . . . . . . . 5000 m3

Process temperature. . . . . . . . . . . . . . . . . . . . 53.5°CSanitation . . . . . . . . . . . . . . MGRT 8 hours at 53.5°CGas storage capacity . . . . . . . . . . . . . . . . . . 4000 m3

Utilisation of biogas . . . . . . . . . . . . . . . . . . CHP-plantTransport vehicle . . . . . . . 2 × 20 m3 vacuum tankersAverage transport distance . . . . . . . . . . . . . . . . 5 kmInvestment cost1 . . . . . . . . . . . . . . . . . 44.1 mill. DKKGovernment grant . . . . . . . . . . . . . . . . 11.5 mill. DKKContractor . . . . . . . . . . . . . . . . . . . . . . . . BWSC Ltd.Operation start-up . . . . . . . . . . . . . . . . . . . . . . . 1996



Snertinge

Org. waste Slurry Sewagesludge

Digester2 + 3

Digester1

Storage tank/Gas treatment

Gasstorage

Gas firedboiler

CHPgeneration

Fertiliser

Districtheating

Districtheating


The biogas plant in Snertinge was built in 1995 andis owned by Snertinge, Særslev, Føllenslev Energi-selskab A.m.b.a. The aim of the co-operative is tobuild and operate a biogas plant and to produce re-newable energy. The members are the slurry suppli-ers and the heat consumers from the three villages.

The biogas plant receives slurry from 11 farms in thearea, consisting of 37% cattle and 63% pig slurry.The slurry is co-digested with fat and flotation sludgefrom food industries and the medicinal industry,small amounts of intestinal content from abattoir andwith sewage sludge. The digestion process takesplace at 52.5°C (thermophilic) on two flow lines: onefor slurry and organic waste and the other one forsewage sludge and slurry. The admixture of sewagesludge implies effective pathogen reduction throughpasteurisation. This takes place in the digester, by acombination of temperature and minimum guaran-teed retention time, which in this case is of minimum10 hours at 52.5°C.

The co-operative has built three storage tanks for di-gested biomass with a total volume of 8.500 m3. Twoof the tanks are placed close to some large cropfarms which receive the excess digested biomass,about 5,000 tons per year. This helps the farmers tomeet the required storage capacity, and to transferexcess of slurry to the crop farms.

Connected to the biogas plant, a combined biogas(1330 kW input power/475 kW electric power) and

wood chip fired (1600 kW) CHP production unit wasestablished. A standby combined oil and gas firedboiler (1750 kW) is used in case of gas enginebreakdown. The wood chip boiler is used as a sup-plement to biogas during the peak energy consump-tion. The CHP-unit supplies 280 consumers withheat via the newly established district heating sys-tem. The electricity is sold to the grid.

Main dataAnimal manure . . . . . . . . . . . . . . . . . . . . 66 tons/dayAlternative biomass . . . . . . . . . . . . . . . . . 42 tons/dayBiogas production . . . . . . . . . . . . . 1.6 mill. Nm3/yearDigester capacity (3 x 1000 m3) . . . . . . . . . . 3000 m3

Process temperature. . . . . . . . . . . . . . . . . . . . 52.5°CSanitation . . . . . . . . . . . . . MGRT 10 hours at 52.5°CGas storage capacity . . . . . . . . . . . . . . . . . . . 200 m3

Utilisation of biogas. . . . . . . . . . CHP-plant/gas boilerTransport vehicle . . . . . . . . . . . 20 m3 vacuum tankerAverage transport distance . . . . . . . . . . . . . . . . 5 kmInvestment cost1 . . . . . . . . . . . . . . . . . 47,8 mill. DKKGovernment grant . . . . . . . . . . . . . . . . 9.2 mill. DKKTotal design and consultancy . . . . . . . . . NIRAS Ltd.Operation start-up . . . . . . . . . . . . . . . . . . . . . . . 1996

1. Incl. storage capacity, district heating network and installation

in the houses.


Blåhøj

Vacuumtanker

Pre-storagetank

Lorrycontainer

Pre-storagetank

Digester

Coveredstorage tank/Gas treatment


CHPunit

Gasstorage

Org. wasteIntestinalcontent

Slurry

FertiliserElectricityto the grid

Districtheating

The Biogas Plant in Blåhøj was built in 1997 and isowned by a local co-operative company, BlåhøjEnergiselskab A.m.b.a. The members are 171 heatconsumers and 14 slurry suppliers. Its primary func-tion is to produce biogas by anaerobic digestion ofslurry and digestible biomass resources of the area,and to supply the heat consumers in Blåhøj with CO2

- neutral energy.

The plant receives slurry from 14 animal farms, con-sisting of 91% cattle and 9% pig slurry. The slurry isadmixed with 21% alternative biomass, mainly as flo-tation sludge from a poultry abattoir, and sludge fromfish processing industries and from food industries.The process temperature is 53°C (thermophilic). Aminimum guaranteed retention time of 5 hours at theprocess temperature ensures effective pathogen re-duction. Digested biomass is returned to the decen-tralised storage tanks of the slurry suppliers as a ho-mogenous, pathogen free and nutritionally definedfertiliser.

The biogas plant has its own CHP- unit, where thebiogas is used in a gas engine (1500 kW-inputpower/550 kW electric power). The biogas engine,supplying the basic load of the heat consumption, issupplemented by a wood chip boiler, while a standbygas/oil boiler is used during the peak period of heatconsumption. The heat is supplied to 171 consumersin Blåhøj town via the newly established district heat-ing net, and the electricity is sold to the grid.

Main dataAnimal manure . . . . . . . . . . . . . . . . . . . . 70 tons/dayAlternative biomass . . . . . . . . . . . . . . . . . 17 tons/dayBiogas production . . . . . . . . . . . . . 1.4 mill. Nm3/yearDigester capacity (2 × 660 m3) . . . . . . . . . . . 1320 m3

Process temperature . . . . . . . . . . . . . . . . . . . . . 53°CSanitation . . . . . . . . . . . . . . . MGRT 5 hours at 53°CGas storage capacity . . . . . . . . . . . . . . . . . . 1200 m3

Utilisation of biogas. . . . . . . . . . CHP-plant/gas boilerTransport vehicle . . . . . . . . . . . 20 m3 vacuum tankerAverage transport distance . . . . . . . . . . . . . . . . 5 kmInvestment cost1 . . . . . . . . . . . . . . . . . 33.4 mill. DKKGovernment grant . . . . . . . . . . . . . . . . 6.9 mill. DKKTotal design and consultancy . . . . . . . . . NIRAS Ltd.Operation start-up . . . . . . . . . . . . . . . . . . . . . . . 1997

1. Incl. storage capacity, district heating network and installations

in the houses


Nysted

Vacuumtanker

Tipperlorry

Pre-storagetank

Mixing/buffer tank

Digester

Sanitationtank

Storage tank/Biogas storage

CHPplant

Gas-firedboiler

Slurry Org. waste

Districtheating

Process heating

Fertiliser


Nysted biogas plant was built in 1997-98, as a fur-ther development of Hashøj biogas plant concept.The plant is owned by Nysted BioGas A.m.b.a.,where the members are the farmers, slurry suppliers.The main interest of the co-operative members in thebiogas plant was exploitation of the digestible bio-mass resources of the area and improvement of theenvironmental image of the agricultural sector. Ani-mal production in the area is dominated by pig farms,so reduction of odour nuisance from slurry applica-tion was another incentive.

The plant is mesophilic (38°C), with a post-sanitationphase of minimum guaranteed retention time of 8hours at 55°C. The plant receives slurry and manurefrom 36 animal farms , consisting of 82 % pig slurry,17 % cattle slurry and 1% poultry manure. The slurryis mixed and co-digested with organic waste from thesugar industry, medicinal industry and tannery, fatand flotation sludge from abattoir, fruit and vegetablewaste and smaller amounts of other organic wastes.The plant is also able to process source separatedhousehold waste. On top of the storage tank there isa double membrane gas storage balloon, which alsocollects the gas production emerging from the stor-age tank.

Connected to the biogas plant, a CHP- unit was es-tablished, to utilise the biogas in a 2300 kW biogasengine. The electricity produced, corresponding tothe yearly consumption of 1300 households, is soldto the grid. The heat is distributed via the district

heating system to 150 heat consumers in Kettingetown. A combined biogas and oil fired boiler comple-ments heat consumption in the cold season. The ex-cess heat is cooled away during the summer season.

Main dataAnimal manure . . . . . . . . . . . . . . . . . . . 180 tons/dayAlternative biomass . . . . . . . . . . . . . . . . 31 tons/ dayBiogas production . . . . . . . . . . . . . 2.6 mill. Nm3/yearDigester capacity . . . . . . . . . . . . . . . . . . . . . 5000 m3

Process temperature . . . . . . . . . . . . . . . . . . . . . 38°CSanitation . . . . . . . . . . . . . MGRT of 8 hours at 55°CGas storage capacity . . . . . . . . . . . . . . . . . . 2500 m3

Utilisation of biogas. . . . . . . . . . CHP-plant/gas boilerTransport vehicle . . . . . . . 2 × 18 m3 vacuum tankersAverage transport distance . . . . . . . . . . . . . . . . 7 kmInvestment cost1 . . . . . . . . . . . . . . . . . 43.7 mill. DKKGovernment grant . . . . . . . . . . . . . . . . . 8.5 mill. DKKContractor . . . . . . . . . . . . . . . . . . . . . . . . Krüger Ltd.Operation start-up . . . . . . . . . . . . . . . . . . . . . . . 1998



AddressesUseful addressesDanish Energy AgencySøren TafdrupAmaliegade 44DK- 1256 Copenhagen KTel +45 33 92 67 00, Fax +45 33 11 47 43E-mail: [email protected]

Danish Institute of Agricultural andFisheries EconomicsJohannes ChristensenGl. Køge Landevej 1-3DK- 2500 ValbyTel +45 36 13 36 33, Fax +45 36 17 22 66E-mail: [email protected]

The Danish Agricultural Advisory CentreTorkild BirkmoseUdkærsvej 15SkejbyDK-8200 Aarhus NTel +45 87 40 50 00, Fax +45 87 40 50 90E-mail: [email protected]

Department of BiotechnologyTechnical University of DenmarkIrini AngelidakiBygning 227DK-2800 LyngbyTel +45 45 25 26 00, Fax+45 45 88 49 22E-mail: [email protected]

Bioenergy DepartmentUniversity of Southern DenmarkJens Bo Holm-Nielsen & Teodorita Al SeadiNiels Bohrs Vej 9DK-6700 EsbjergTel +45 65 50 41 66/41 68, Fax +45 65 50 10 91E-mail: [email protected] & [email protected]

Danish Gas Technology CentreJan JensenDr. Neergaardsvej 5A2970 HørsholmTel +45 45 16 96 00, Fax +45 45 16 96 01E-mail: [email protected]

ConstructorsKrüger Ltd.Gladsaxevej 363DK-2860 SøborgTel +45 39 69 02 22, Fax +45 39 69 08 06

BWSC Ltd.Burmeister & Wain ScandinavianContractors Ltd.Gydevang 35, Box 235DK-3450 AllerødTel +45 48 14 00 22, Fax +45 48 14 01 50

Niras Ltd.Åboulevarden 80, Box 615DK-8100 Århus CTel +45 87 32 32 32, Fax +45 87 32 32 00

BioScan Ltd.Tagtækkervej 5DK-5230 Odense MTel +45 66 15 70 71, Fax +45 66 15 77 71

Herning Municipal UtilitiesDalgas Alle 3DK-7400 HerningTel +45 99 26 82 11, Fax +45 99 26 82 12

GasCon ApsGrundtvigsvej 23DK-8600 SilkeborgTel +45 70 27 20 90

Consulting Engineers and PlannersBioplan Ltd.Livøvej 21DK-8800 ViborgTel +45 86 61 38 33, Fax +45 86 62 68 36

PlanEnergi Ltd.Jyllandsgade 44DK-9520 SkørpingTel +45 98 39 24 00, Fax +45 98 39 24 98

Carl Bro Ltd.Granskoven 8DK- 2600 GlostrupTel +45 43 48 66 11, Fax +45 43 96 44 14

Rambøll Ltd.Bredevej 2DK-2830 VirumTel +45 45 98 60 00, Fax +45 45 98 67 00

Jysk Biogas International Ltd.Haals Bygade 15DK-9260 GistrupTel +45 98 33 32 24


Plant AddressesBlåbjerg Biogas PlantPræstbølvej 11DK-6830 Nr. NebelTel +45 75 28 79 48, Fax+45 75 28 73 48

Blåhøj Biogas PlantSdr. Omme Vej 38, BlåhøjDK- 7330 Sdr. OmmeTel +45 34 55 21

Davinde Biogas PlantThorupvej 70, DavindeDK-5220 Odense SØTel +45 65 97 29 30

Fangel Biogas PlantØstermarksvej 70DK-5260 Odense STel +45 65 96 34 19, Fax +45 65 96 34 20E-mail: [email protected]

Filskov Biogas PlantHjortlundvej 13, FilskovDK-7200 GrindstedTel +45 75 34 83 48, Fax +45 75 34 83 40

Hashøj Biogas PlantIndustrivej 17DK-4261 DalmoseTel +45 18 80 60, Fax +45 58 18 80 27

Hodsager Biogas PlantHestbjergvej 1ADK-7490 AulumTel +45 47 64 99

Lemvig Biogas PlantPillevej 12, RomDK-6720 LemvigTel +45 97 71 14 00, Fax +45 97 81 14 02E-mail: [email protected]

Lintrup Biogas PlantTornumvej 15DK-6660 LintrupTel +45 74 85 53 44, Fax +45 74 85 52 03

Nysted Biogas PlantFuglegårdsvej 10DK-4892 KettingeTel +45 54 87 38 00, Fax +45 54 87 49 49E-mail: jd@nysted-biogas-dk

Ribe Biogas PlantKoldingvej 19DK-6760 RibeTel +45 75 41 04 10, Fax +45 75 42 32 45

Sinding-Ørre Biogas PlantRosmosevej 4, SindingDK-7400 HerningTel +45 97 13 61 14

Snertinge Biogas PlantKirkemosevej 13DK-4591 FøllenslevTel +45 59 26 70 91, Fax +45 59 26 84 94

Studsgård Biogas PlantØrneborgvej 11DK-7400 HerningTel +45 97 16 44 30, Fax +45 99 26 44 31

Thorsø Biogas PlantKongensbrovej 10DK-8881 ThorsøTel +45 86 96 64 00, Fax +45 86 96 64 88

Vaarst Fjellerad Biogas PlantTorderupvej 23, GunderupDK-9260 GistrupTel +45 98 33 30 10, Fax +45 98 33 36 53E-mail: (c/o Niras) [email protected]

Vegger Biogas PlantSkivumvej 2, VeggerDK-9240 NibeTel +45 98 66 65 02

Vester Hjermitslev Biogas PlantEngkrogen 10DK-9700 BrønderslevTel +45 98 88 74 44, Fax +45 98 88 78 46E-mail: [email protected]

Århus Nord Biogas PlantBjergagervej 4DK-8380 TrigeTel +45 86 98 94 32, Fax +45 86 98 92 09E-mail: [email protected]

Addresses

Centralised biogas plants offer integrated solutions to many problemsrelated to agriculture, energy generation and environmental protec-tion.

Development of biogas technology in Denmark has been supported bya range of governmental initiatives over the last 10 years, leading toconsolidation and maturation of the bioenergy industry.

danish biogas plant

Documents