HYDROGEN SULFIDE, PHOSPHATE, COOPER, CHROMIUM,

SELENIUM & ARSENIC REMOVAL MEDIA

Granular Ferric HydroxideBased Removal MediaGranular Ferric HydroxideBased Removal Media

FILTERSORB HSRFILTERSORB 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 HSRFILTERSORB HSR

Leading Manufacturer of Filtration Medias for Water Technology

WATCH FILTRATION TECHNOLOGY

Granular Ferric HydroxideGranular Ferric HydroxideGranular Ferric HydroxideGranular Ferric Hydroxide

Hydrogen Sul de, Arsenic and Phosphates Removal in Drinking Water

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FILTERSORBFILTERSORBFILTERSORBHydrogen Sul de, Arsenic and Phosphates Removal in Drinking WaterFILTERSORBHydrogen Sul de, Arsenic and Phosphates Removal in Drinking WaterIntroduction

Hydrogen sul 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 sul 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 sul 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 sul 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 ltering media is about 40% by weigh. Because of its chemical activity, ferric (III) hydroxide is quite appropriate to bind arsenate, phosphate or sul 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 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 Sul de removalSul de ions formed from hydrogen sul de in water are removed in a similar way under precipitation of hardly soluble ferric sul de.

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

Hydrogen Sul 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 ow mode through a single or multiple xed bed pressure vessel containing the Filtersorb HSR media, but it can be also successfully used in up ow ltration. In down ow 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 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 Sul de in water

Treatment of contaminated ground water

Filter beds for the separation of phosphates compounds in wet lands

Reactive barriers for the con nement of contamination in depositions

Binding of nutritive substances in aquarium or garden pond treatment

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Physico-Mechanical properties:

Bulk weight 640 kg/m3

Speci 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 ow 450-850 mm

Free board down ow 50-75%

Bed depth up ow 50-100%

Free board up ow 10-50%

Service ow rate 10-20 m/h

Back wash 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 ltration materials for drinking, process and waste water technologies

WATCH GREEN PRODUCT RANGE

Filtration material and 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- de, Arsenic, Phosphor and other heavy metals from water

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

Watchox Mn (Manganese dioxide) to remove Iron, Manga-nese and Hydrogen sul 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 Micro ltration, Ultra ltration, Nano ltartion, Reverse Osmosis

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

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WATCH GmbHMannheimer Strae 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

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

Bene ts:100% Ef ciency100% Biodegradability100% No harmful waste100% Compatibility for drinking

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