Removal of Algae from Waste Stabilization Pond Effluent.

摘要

The objectives were: (1) To determine the variances of selected parameters for waste stabilization pond effluents treated with alum alone and with alum used with polyelectrolytes;and (2) to determine the sludge volume and characteristics produced in the physical-chemical process. In addition,the use of lime in place of alum was studied. Effluents were collected for four sampling conditions and treated in the laboratory to determine chemical requirements and sludge characteristics. Alum requirements were in the range of 60to 100mg/l while lime (Ca(OH)2) requirements varied from 250to 600mg/l. Various polyelectrolytes were tried and produced fair results when cationic polymers were used in concentrations greater than 15mg/l. An equation has been proposed that relates alum sludge volume produced to suspended solids removed.