HYDROGEN SULFIDE, PHOSPHATE, COOPER, CHROMIUM,

SELENIUM & ARSENIC REMOVAL MEDIA

Granular Ferric HydroxideBased Removal MediaGranular Ferric HydroxideBased Removal Media

FILTERSORB HSR®FILTERSORB HSR®

Leading Manufacturer of Filtration Medias for Water Technology

WATCH FILTRATION TECHNOLOGY

HYDROGEN SULFIDE, PHOSPHATE, COOPER, CHROMIUM,

SELENIUM & ARSENIC REMOVAL MEDIA

Granular Ferric HydroxideBased Removal MediaGranular Ferric HydroxideBased Removal Media

FILTERSORB HSR®FILTERSORB HSR®

Leading Manufacturer of Filtration Medias for Water Technology

WATCH FILTRATION TECHNOLOGY

Granular Ferric HydroxideGranular Ferric HydroxideGranular Ferric HydroxideGranular Ferric Hydroxide

Hydrogen Sulfi de, Arsenic and Phosphates Removal in Drinking Water

watch water technology

FILTERSORBFILTERSORBFILTERSORBHydrogen Sulfi de, Arsenic and Phosphates Removal in Drinking WaterFILTERSORBHydrogen Sulfi de, Arsenic and Phosphates Removal in Drinking Water®®Introduction

Hydrogen sulfi de is a colorless gas with an offensive stench and is said to smell like rotten eggs. The gas can be detected at a level of 2 parts per billion. It is very erosive in a wet state and become Sox when it is oxidized.

Physical Properties of H2S

Hydrogen sulfi de has a structure similar to that of water. This is where the similarity ends, however. Sulfur is not nearly as electronegative as oxygen so that hydrogen sulfi de is not nearly as polar as water. Because of this, comparative-ly weak intermolecular forces exist for H2S and the melting and boiling points are much lower than they are in water. Hydrogen sulfi de and water boil at - 60.7 °C and +100.0 °C, respectively.

General Information Filtersorb HSR

Using a patented process, ferric hydroxide can now be produced in a granular form. Various bead diameters can be made by combination of crushing and sieving procedures. This gives access to a great variety of new applications of ferric (III) hydroxide. The Filter media, containing iron hydroxide Fe(OH)3 has an amorphous structure. The ferric ions content in the fi ltering media is about 40% by weigh. Because of its chemical activity, ferric (III) hydroxide is quite appropriate to bind arsenate, phosphate or sulfi de ions in aqueous media. Due to internal high pH of media it has an additional effect of the reac-tion with H2S and can reach oxidation capacity up to 20% by its dry weight.

Operation Principles

Arsenic and Phosphate removal In a fi rst step arsenate or phosphate ions in aqueous solutions were adsorptively bounded to the surface of Filtersorb HSR. Second step is a chemical conversion to stable ferric arsenate or ferric phos-phate to the surface of Filtersorb HSR.

Fe(OH)3 + H3PO4 > FePO4 + 3 H2O Fe(OH)3 + H3AsO4 > FeAsO4 + 3 H2O

Hydrogen Sulfi de removalSulfi de ions formed from hydrogen sulfi de in water are removed in a similar way under precipitation of hardly soluble ferric sulfi de.

2 Fe(OH)3 + 3 H2S > Fe2S3 + 6 H2O

Hydrogen Sulfi de, Arsenic and Phosphates Removal in Drinking Water

Application:

• Water treatment: Filtersorb HSR media is applicable in a wide range of water treatment processes, from large-scale municipal systems to small-scale residential treatment units.Regardless of the system size, there are operational design parameters that must be considered to ensure effective, trouble free performance of the Filtersorb HSR media.

Groundwater or surface water is simply pumped in down fl ow mode through a single or multiple fi xed bed pressure vessel containing the Filtersorb HSR media, but it can be also successfully used in up fl ow fi ltration. In down fl ow fi ltration is recommended to use oxygen dosing for better oxidation. It is also being used in systems to remove Chro-mium, Cooper, Selenium.

The multiple pressure vessel design is either assembled in Parallel Flow or Series fl ow. Flow to each vessel is measured and totalized to record the volume of water treated. Pressure differential through each vessel is also monitored.

Periodic backwashing is typically performed at start-up and after each pressure drop of 0,5-1,0 Bar thereafter depending on usage and water quality.

• Elimination of Arsenic from drinking water

• Binding of Phosphates from rivers and lakes

• Oxydation of Hydrogen Sulfi de in water

• Treatment of contaminated ground water

• Filter beds for the separation of phosphates compounds in wet lands

• “Reactive barriers” for the confi nement of contamination in depositions

• Binding of nutritive substances in aquarium or garden pond treatment

watch water technology

Physico-Mechanical properties:

Bulk weight 640 kg/m3

Specifi c surface 270 m2/g

Colour dark brown

Mesh size 0,5-2,0 mm, 2,0-4,0 mm

Operation condition and exchange capacity:

Bed depth down fl ow 450-850 mm

Free board down fl ow 50-75%

Bed depth up fl ow 50-100%

Free board up fl ow 10-50%

Service fl ow rate 10-20 m/h

Back wash fl ow rate 25-30 m/h

Total adsorbtion capacity as P4+ 15 g/kg

Total adsorption capacity as As 5+ 12 g/kg

Oxidation capacity as H2S up to 20% of its dry weight

pH 5-9

Filtersorb HSR

Chemical formula and composition: Amorphous Fe(OH)3

Mineralogical composition: Up to 40% of Ferric Ions from its weight

Company presentation:

Since many years Watch GmbH is a leading supplier of high quality Products for domestic and industrial application in water treatment technology. As a pollution worldwide is being increased our company is going to present You a new concept of Green Chemical Technology with its special biodegradable 100% chemicals and fi ltration materials for drinking, process and waste water technologies

WATCH GREEN PRODUCT RANGE

Filtration material and fi ltration systems:

Zeosorb (Alumosilicate) – to remove suspended solids up to 3-5 micron, hardness, ammonium, cesium, nickel, Lead, Cooper

Titansorb (Titanium dioxide) – to remove Arsenic and other heavy metals. It is successfully being used as biocide to disinfect the water

Filtersorb HSR (Iron Hydro-oxide) – to remove Hydrogen Sul-fi de, Arsenic, Phosphor and other heavy metals from water

Greensand FMH (dolomite coated with Manganese dioxide) – to remove Iron, Manganese and Hydrogen sulfi de

Watchox Mn (Manganese dioxide) – to remove Iron, Manga-nese and Hydrogen sulfi de

Filtersorb SP3 (Polymer-carbonate) – modern scale preven-tion technology based on decarbonization effect

Watch Carbonsorb (bituminous Carbon) – to remove free chlorine, THM and chloramines

Watchsorb H2O (Polymer) – is a high capacious Superab-sorber-Polymer, which can store water up to the 1000-fold of its own net-weight. It is sucessfuly being used in soil for water storage

Watch Liquid Softener – scale prevention technology and softening with dosing of Tri-Sodium salts

Filtersorb Calcit – is being used as acidity and CO2 neutral-ization

Ion exchange resins Watch Ion – SAC, WAC, WBA, SBA, MB, Ultra pure

Watch Membranes – Microfi ltration, Ultrafi ltration, Nanofi ltartion, Reverse Osmosis

Watch Chemicals – chemicals for drinking water, cooling tower, boilers, membrane technology, swimming pools

watch water technology

WATCH GmbHMannheimer Straße 8 D 68766 Hockenheim

Telefon: +49 (0)6205 3092 53 Telefax: +49 (0)6205 3092 78

Email: info@watchwater.de Internet: http://www.watchwater.de N

EWN

EWN

EW

Watch Liquid SoftenerAlternative technology to avoid scale, based on dosing of Biodegradable Watch Liquid Softener with specially made mechanical pumps

Benefi ts:100% Effi ciency100% Biodegradability100% No harmful waste100% Compatibility for drinking

water processwww.watchwater.de

NEW