reward 1 st technical-meeting 15 – 16 dec 2004 reward

1st Technical-Meeting 15 – 16 Dec 2004

REWARD

REWARD


REWARDAgenda 15-12-2004

12.00 – 13.00 Arrival with possibility to have lunch at the Student's Canteen

13.00 – 13.10 Presentation of the meeting’s agenda

13.10 – 16.00 combined filter and ozone process: -objectives-technologiesbased on a structure proposed by Klaus Padtberg

definition of standard soilsuggestion of Tobias Ausländer

next steps:- minimum saturation time- ozone generation

18.00 end of the first day

19.00 dinner in a „Kneipe“ in Steinfurt



8.45 – 9.00 arrival

9.00 – 12.30 next steps:

filtering

filtering and dishwasher test bed is it necessary to modify the experimental dishwasher at FH Münster?

definition of measurands

methods of ozone detection

12.30 – 13.00 next meeting,

miscellaneous

13.00 end of the meeting

possibility to have lunch at the students canteen


REWARDObjectives of this Technical Meeting

• Discussing and deciding the working steps for the next 3 months– wp1.1, wp1.4– wp5.1, wp5.2, wp5.3, wp5.5– wp6.1, wp6.2

• Deciding on the combination ozone and MP-Filters• Deciding the role of ozone:

– cleaning– sanitizing– both


REWARDGantt-diagram

- Se

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MP

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Ho

b

LP

AC

FH

S

FH

R

Se

ak

MP

CL

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1 2 3 4 5 6 7 8 9 10 11 12

WP1 ozone proc.1.1 min. sat. time 6,0LPAC 1.2 oz. stab. 4,0

1.3 oz. trans.eff. 6,01.4 oz. generation 6,0 5,0

WP2 oxyd. proc. 2.1 kin. model. 10,0LPAC 2.2 lab.sc. test. 2,0 1,0 3,0 5,0 2,0 2,0 1,0 4,0 2,0

2.3 hygiene-check 0,5

WP3 recycl. 3.1 recycl. 2,0 1,0 6,0 3,0LPAC 3.2 hygiene-check 0,5

WP4 safety 4.1 retent.eff. 2,0 3,0 2,0 5,0 3,0FH-S 4.2 safety/work-safety 6,0 3,0 3,0

4.3 implementation of eu-safety guideline 2,0 3,0

WP5 filtration 5.1 def.stand.soil 1,0 1,0MP 5.2 theor. est. 2,0 2,0

5.3 des. testbed 2,0 2,0 1,0 2,0 2,05.4 constr.testbed 2,0 1,0 2,05.5 des. filter 5,0 1,05.6 constr. filt. 1,0 5,0 1,0

WP6 testing 6.1 measurand def 1,0FH-R 6.2 construct. m.s 2,0 2,0 6,0

6.3 perf. eval. tests 2,0 2,0 6,06.4 hygiene-check 0,5 1,0

WP7 mach. designSeak. 7.1 system design 3,0 3,0 1,0 6,0 6,0 3,0

7.2 ozone part 2,0 1,0 3,0 4,0 0,07.3 filter part 2,0 3,0 1,0 2,0 2,07.4 system control 2,0 2,0 1,0 2,0 4,0 2,0 4,07.5 hygiene-check 0,5 1,0

personmonth in year 1 R&D phasepersonmonth in year 2


REWARDConsumables

consumables and prices in €

Seaking mechanical parts for system development 20000 20000

Millenniumpore basic material for membrane development 12000 12000

Copperline mechanical and electronic parts for ozone generator optimization 5000 5000

FH Münster mechanical subsystem for filtering (FHS) 15000

fittings, pipes for system construction (FHS) 7000

sensors and sensorelectronics for in-process control of ozone (FHR) 12000

sensors and sensorelectronics for in-process control of filter efficiency (FHR) 12000

chemicals (for water quality analysis) (FHS) 5000

control electronics for system design (FHR) 8000 59000

K.U. Leuven gas handling systems, flow meters and regulators 10000

ozone sensing spare units (gas and liquid phase) 15000

pipe tubings end connectors (PFA,stainlees steel) 7000

gas consumption (oxygen, nitrogen) 10000

chemicals (analysis, ozone removal trap, AOP-adjustment) 10000

ozone source subsystems (spare parts) 30000 82000


REWARDOzone for extended sanitizing

Reuse water from dual rinse for rinse !

drinking water quality

Use water from dual rinse for 1st filling of machine at startup !

Hygienic and clean water is needed !

Filter wash water for longer operating life of water ! Closed water cycle

waste water to potable water

Sensor development ! ware detection (size & material) !


REWARDscenario 1

• use recupareted water after rinsing, here „Potable water quality is necessary“: but it is very hard to achieve this quality because of anorganic contaminations.

• is „potable water“ really necessary? • MP ultrafiltration works up from ~20.000 Daltons, sugars, salts are not

filtered out• rinsing shall: remove detergents, lower PH-value, speck removal by

prerinsing=postwash• what has to be investigated:

– ph- increase can be inhibited by adding acid?– how much recycling can be done,

• conclusion: – stabilize the process in the rinse step for a steady process, reuse water from

prerinse for final rinse by filtering and adding acids für neutralisation– what is the minimum amount of potable water to fullfil the regulations

• next steps:– check the DIN regulations until tomorrow morning ( T. Ausländer)– requirement specification from the end user: washing process, regulations,

law…


REWARDscenario 1: role of ozone

• decolourizing• desinfection• increase solubility of contaminants• could possibily help neutralisation• conclusion:

– ozone is important in scenario 1


REWARDscenario 2

• water from prewash is stored in an additional tank and used for washing in the next run

• ozone must be used for sanitizing


REWARDscenario 3

• filtering water from wash and prewash process• compared to filtering in the final steps the contaminants are coarser• prefiltering with sieves has to be used, particles should be smaller than

about 500µm for microfiltering• a 200 µm filter arrangement would be suitable (manufacturer: AUXILL )• might be possible to use existing pump for the filtrations, but for simplicity

a test bed with pumps of it own will be used• there is a trade off between power needed for pumping and filtration

surface: the larger the filter, the lower the power• conclusion:

– scenario 3 should be investigated further– filter lay out is strongly dependend on boundary conditions: costs for energy,

pumps, membranes…..– what is the effect of strongly soiled cleaning water on the ware? has to be

investigated further / connection with the rinse step water reduction


REWARDscenario 3: role of ozone

• sanitizing residual water in the machine at the end of a shift

• compatibility of filter material with ozonated water? (important in all scenarios), this has to be checked!


REWARDscenario 4 + 5

• long term target


REWARDDefinition of Standard Soil

• standard soil for investigating the process water, not cleaning efficiency• what has to be specified

– components, incl. brand– preparation– temperature

• use „moving target specification“:– start with a specification, check it regularly by real soil from canteens– modify standard if necessary

• components:– based on „Hobart-Steinfurt-Standard“

• mashed potatoes, brown gravy, white sauce– in addition:

• sugar• detergents

• T. Ausländer will circulate a suggestion• within 1 month partners can comment• then a 1st version will be defined


REWARDDinner in a Westphalian “Kneipe”


REWARDDinner

name: VIP, at one side of Cafe Schwan

Steinstrasse



12.00 – 13.00 Arrival with possibility to have lunch at the Student's Canteen

13.00 – 13.10 Presentation of the meeting’s agenda

13.10 – 16.00 combined filter and ozone process: -objectives-technologiesbased on a structure proposed by Klaus Padtberg

definition of standard soilsuggestion of Tobias Ausländer

next steps:- minimum saturation time- ozone generation

18.00 end of the first day

19.00 dinner in a „Kneipe“ in Steinfurt



8.45 – 9.00 arrival

9.00 – 12.30 next steps:

filtering

filtering and dishwasher test bed is it necessary to modify the experimental dishwasher at FH Münster?

definition of measurands

methods of ozone detection

12.30 – 13.00 next meeting,

miscellaneous

13.00 end of the meeting

possibility to have lunch at the students canteen


REWARDGantt-diagram

- Se

ak

MP

CL

SW

M

Ho

b

LP

AC

FH

S

FH

R

Se

ak

MP

CL

SW

M

Ho

b

LP

AC

FH

S

FH

R

1 2 3 4 5 6 7 8 9 10 11 12

WP1 ozone proc.1.1 min. sat. time 6,0LPAC 1.2 oz. stab. 4,0

1.3 oz. trans.eff. 6,01.4 oz. generation 6,0 5,0

WP2 oxyd. proc. 2.1 kin. model. 10,0LPAC 2.2 lab.sc. test. 2,0 1,0 3,0 5,0 2,0 2,0 1,0 4,0 2,0

2.3 hygiene-check 0,5

WP3 recycl. 3.1 recycl. 2,0 1,0 6,0 3,0LPAC 3.2 hygiene-check 0,5

WP4 safety 4.1 retent.eff. 2,0 3,0 2,0 5,0 3,0FH-S 4.2 safety/work-safety 6,0 3,0 3,0

4.3 implementation of eu-safety guideline 2,0 3,0

WP5 filtration 5.1 def.stand.soil 1,0 1,0MP 5.2 theor. est. 2,0 2,0

5.3 des. testbed 2,0 2,0 1,0 2,0 2,05.4 constr.testbed 2,0 1,0 2,05.5 des. filter 5,0 1,05.6 constr. filt. 1,0 5,0 1,0

WP6 testing 6.1 measurand def 1,0FH-R 6.2 construct. m.s 2,0 2,0 6,0

6.3 perf. eval. tests 2,0 2,0 6,06.4 hygiene-check 0,5 1,0

WP7 mach. designSeak. 7.1 system design 3,0 3,0 1,0 6,0 6,0 3,0

7.2 ozone part 2,0 1,0 3,0 4,0 0,07.3 filter part 2,0 3,0 1,0 2,0 2,07.4 system control 2,0 2,0 1,0 2,0 4,0 2,0 4,07.5 hygiene-check 0,5 1,0

personmonth in year 1 R&D phasepersonmonth in year 2


REWARDNext steps: minimizing saturation time and ozone generation

• Ozone generator• ► definition of the characteristics: gas phase concentration of ozone and gas flow

range• ( calculate amount of grams ozone / hour)

• Mass transfer • ► which device will be used to achieve maximum kLa ?• ( possible testing by LPAC ? )

• the ozone / water tank• ► in situ production of ozone or use of a storage tank ?• ► in the case of a storage tank: volume ? Dimensions ?• Sensoring ozone in the storage tank• ► need for [O3]gas measurement ?• ► need for [O3]liq measurement ?• ORP-electrode: testing by LPAC• other devices (in case ORP is not usable

because it is perhaps too pH-sensitive) ?

• Compatibility ozone – filter system • ( possible testing LPAC ? )

• Lab-scale testing (oxidation process)• ► building of this lab-scale chamber: who ? • Characteristics of the chamber ?


REWARDNext steps: minimizing saturation time and ozone generation

• what has to be tested– test bed for ozone transfer optimization

• with water pump, venturi, millenniumpore pipes

• „wallfilter“ approach from MP should be taken into account

• to decide– specification of requirements: KUL, CP, Hobart, FHS– sketch / draft of a system with relevant parameters: FHS– design / construction at Seaking


REWARDNext steps: filtering

• specify requirements for the test bed: MP, FHS, Hobart

• sketch / design: MP• construction of the test bed : FHS


REWARDfiltering

• sketch of a filter system


REWARDCoffee Break


REWARDNext steps: definition of measurands

• measurands for process control in the machine– water temperature yes– turbidity yes– foam creation yes– water flow yes– ph-value yes– ozone concentration in water yes– ozone concentration in air within machine no– ozone concentration in air outside of machine YES


REWARDozone measurement

• ozone concentration outside the machine has to be monitored because of worker safety

• are German and European regulations consistent?• ozone in water:

– measuring range?– reproducibility?– ORP electrode will be tested at KUL

• in air:– measuring range– reproducibility

• DIN 19627 important, EN 1278• discussion between KUL, FHS, FHR, CP, Hobart


REWARDNext meeting

• „ozone meeting“ will be held according to the needs of KUL and CP

• „filter meeting“ one day before the next technical meeting

• technical meeting for all:– at FH , 17-3-2005, 13.00 - 18-3-2005, 13.00


REWARDStructure of REWARD

WP 1

ozone proces.

LPAC

WP 2

oxydization processLPAC

WP 3

recycling

LPAC

WP 4

safety

FH-S

WP 5

Filtration

MP

WP 6

Testing

FH-R

WP 7

machine des.

Seaking

WP 8

machine build upSeaking

WP 9

field valid.

FH-S

WP 10

management

FH-R

microfiltering

ozone cleaning

system design

intermediate results

intermediate results


REWARDLunch in the Students Canteen


REWARDThank you very much

merry christmas and a happy new year

reward 1 st technical-meeting 15 – 16 dec 2004 reward

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