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cationic flocculants represent the large majority of the chemicals used in sludge dewatering. 2.2.1. flocculation mechanism: flocculation of sludge is the step in the process where destabilized particles are agglo-merated in aggregates called flocs. flocculants, with their very high molecular weights (long chains of monomers) and their.wo2001025156a1 cationic polymers for sludge dewatering,cationic polymers for sludge dewatering download pdf info publication number wo2001025156a1. wo2001025156a1 pct/se2000/001922 se0001922w wo0125156a1 wo 2001025156 a1
us5183576a cationic polymers for sludge dewatering google
a method of dewatering sludge is disclosed. this method comprises adding to the sludge an effective amount for the purpose of a polymer comprising repeat unit moieties of the compound methacryloyloxyethyl trimethyl ammonium chloride, said polymer having an intrinsic viscosity of about 1.0 to about 4.5 dl/g.enhanced sludge dewatering by dual polyelectrolytes,at high dosage of the cationic polyelectrolyte (5.8 kg/ton ds), the attachment sites of sludge particles were used up and the unadsorbed cationic polyelectrolyte remained in the aqueous phase. therefore, the dewaterability was decreased (christensen et al. 1993, lurie and rebhun, 1997). when the non-ionic polyelectrolyte was used, the bridging was more prominent owing to the higher molecular weight.
efficient dewatering of polymer-rich aerobic granular sludge
they noted that the use of high molecular weight floerger type 4650 cationic polymer at doses lower than 6 g/kg mlss prevented the dewatering of the flocculated sludge via the filtering fabric. the optimal dose of polymer was 10 g/kg mlss; at this dose, the sludge was dehydrated to 95% humidity after 10 s of dewatering.manufacturer cationic acrylic polymer wastewater treatment,avoid turbulent mixing conditions in the process stream after any grade of our cationic flocculants has been added. treatment levels: for use as: belt press, screw press, filter press or centrifuge dewatering of municipal or industrial wastewater sludge. 0.1 to 1%/dry solid. air flotation of activated sludge or paper mill fines0.1 to 5 ppm
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polymer use (lb/dry ton of solids) municipal biological waste sludge 0.2-1.5 17-25 98 10-22 digested/thickened 1.6-6 16-28 97 10-16 primary 1-4 25-40 95 6-12 potable ferric sludge 5-10 35-45 95 5-10 alum sludge 1-2.5 20-30 95 4-8 lime slurry 2 25-38 97 4-10 the volute dewatering press is designed to be fully automated, capable of,industrial and municipal sewage dewatering treatment cationic,industrial sewage dewatering treatment, cationic polyacrylamide, flocculant 1.manufacturer 2.free samples are available 3. polyacrylamide 4.certification: iso9001:2008 <br /a ton of polyacrylamide can catch up with tianrun three tons of polyacrylamide, quality and service is not a discount
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