CalMedia - GSR Plus Brochure

Making Water and Air Safer and CleanerCalMedia™ GSR PLUSFor Reducing Iron, Manganese, and Hydrogen Sulfide From Water SuppliesDescription CalMedia™ GSR Plus is a granular manganese dioxide filteringmedia used for reducing iron, manganese, and hydrogen sulfidefrom water. Its active surface coating oxidizes and precipitatessoluble iron and manganese. Hydrogen sulfide is oxidized to sulfur. The precipitates are filtered out in the granular bed andremoved by backwashing.CalMedia™ GSR Plus consists of a light weight granular core witha coating of manganese dioxide. The coating provides an example of contact filtration where the media itself provides theoxidizing potential. This allows for a much broader range of operation than many other iron removal medias. Water with a pH level as low as 6.2 can be treated. Dissolved oxygen isnot essential. The media’s light weight reduces backwash waterrequirements.When the oxidizing power of CalMedia™ GSR Plus is reduced, thebed has to be regenerated with a weak solution of potassiumpermanganate (KMnO4), thus restoring its oxidizing capacity.A regenerating solution of 11/2 to 2 ounces (dry weight) of potassium permanganate per cubic foot is sufficient for normalregeneration. Upon start-up, a new bed should be backwashedand caution taken to insure that the lightweight media is notbackwashed to drain. A new bed should be regenerated theevening of installation. Operating the filter after its oxidizingcapacity is exhausted will reduce its service life and may cause staining.CalMedia™ GSR Plus requires either intermittent or continuousregeneration to maintain its oxidizing capacity. For continuousregeneration, a solution of potassium permanganate (or chlorinethen potassium permanganate) can be pre-fed to maintaincapacity. The manganese dioxide coating acts as a contact oxidizer to enhance the oxidation reaction and as a buffer toreduce any excess potassium permanganate concentration andprevent it from entering the service lines.The addition of other chemicals to influent or backwash waterwhich contacts CalMedia™ GSR Plus may inhibit iron, manganese, or hydrogen sulfide removal, or may break down orcoat CalMedia™ GSR Plus. Before adding any chemical to theinfluent or backwash water (other than chlorine or potassium permanganate) the chemical's compatibility with CalMedia™GSR Plus should be thoroughly tested.Advantages• Broad operating range for iron reduction• Lower pressure loss through the bed with high flock holding capacity• Effective hydrogen sulfide, iron, and manganese reduction• Light weight requires lower backwash rates and reduces pumping requirements• Chlorine can be beneficial in extending filter run times• Low attrition loss for long bed life• Lower shipping costService Flow Pressure DropBackwash Bed Expansion Flow Rate(gallons per min./ft2 of bed area)0 5 10 15 20Backwash Expansion(percent of bed depth)0%10%20%30%40%50%Temperature40ºF (4ºC)60ºF (16ºC)80ºF (27ºC).050.10.20.30.40.50.60.70.80.91.06 7 8 9 10 15 20 25Flow Rate(gallons per min./ft2 of bed area)Pressure Drop(pounds per square in./ft. of bed depth)Temperature40ºF (4ºC)60ºF (16ºC)80ºF (27ºC)Physical PropertiesColor Dark brownBulk Density 45 lbs./ft3Specific Gravity 2.0 gm/ccEffective Size 0.43 mmUniformity Coefficient 2.0Mesh Size 14x40CalMedia™ GSR PLUSFor Reducing Iron, Manganese, and Hydrogen Sulfide From Water SuppliesInfluent and Backwash Limitations• Oil: None present• Polyphosphates: None presentCopyright© 2006 Calgon Carbon Corporation, all rights reserved. CPM-0003-0906 www.calgoncarbon.comYour local representativeCalgon Carbon CorporationP.O. Box 717 Pittsburgh, PA USA 15230-07171-800-422-7266Tel: 412-787-6700Fx: 412-787-6713Chemviron CarbonEuropean Operations of Calgon Carbon CorporationZoning Industriel C de FeluyB-7181 Feluy, BelgiumTel: + 32 (0) 64 51 18 11Fx: + 32 (0) 64 54 15 91Calgon Carbon Asia65 Chulia Street #37-03 OCBC CentreSingapore 049513Tel: +65 6 221 3500Fx: +65 6 221 3554Making Water and Air Safer and CleanerOrder InformationDescription ft3/bag wt./ft3* bags/pallet wt./pallet Pallet DimensionsCalMedia™ GSR Plus 1 45 lbs. 40 1,850 lbs. 40” x 48” x 42”Capacity Per cu. ft. No. Grains ppmIron (Fe+2) alone 600 (10,000 ppm) Manganese (Mn+2) alone 300 (5,000 ppm) Hydrogen Sulfide (H2S) alone 175 (3,000 ppm) Conditions for Operation U.S. UnitsWater pH range 6.2–8.5Water Temp 100ºF/38ºC (max)Bed Depth 24–36 in.Freeboard 50% of bed depth (min)Service Flow Rate 3–5 gpm/ft2, 8–10 gpm/ft2intermittent flow possibleBackwash Flow Rate 8–10 gpm/ft2Backwash Expansion Rate 20–40% of bed depth (min)Regenerant dosage 11/2–2 oz. of KMnO4by weight/ft3*Weight per cubic foot is approximate.