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Polymeric chemistry has great effects on the performance of a wastewater facility - performance being the key word. Sludge dewatering polymers must perform well for the wastewater treatment facility to perform well.
The purpose of polymers is to condition sludge by removing water with mechanical equipment such as belt filter presses, centrifuges, gravity belt thickeners and dissolved air floatation units. With all equipment, there are factors that affect the polymers performance. There is not a one-size-fits-all solution in polymeric chemistry.
Aerobic, anaerobic and thermoplastic digested sludge all require different polymers to dewater properly. Even more specific motion and polysaccharide concentration affect the polymer and how much polymer to use. If polymer is overfed, it could get into the clarifiers and cause suspended solid issues. If a polymer is not efficient, mixed liquor may not decrease and cause an inefficient removal of sludge in the treatment facility. Polymers must be tested and efficiently added to ensure maximum performance.