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Removal of Organics and Nutrients from the Combined Sewage in Shanghai using Coagulation-Flocculation Process

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Organics and nutrients removal by coagulation-flocculation process using polyaluminiumferric chloride and its aids, applied to a combined sewage in Shanghai, were studied. Cationic polyacrylamide (PAM), polyvinyl alcohol (PVA), a new type of polyelectrolyte (AN) and activated silica (AS) were used as coagulant aids. Performances were measured under optimum conditions for the polyaluminium-ferric chloride and coagulation aids used. The coagulation-flocculation process using polyaluminium-ferric chloride reduced the content of total phosphorus(TP) orthophosphate(PO4 3--P) suspended solid(SS) and chemical oxygen demand(COD) effectively. The jar test results confirmed that coagulation-flocculation process was feasible for the treatment of combined sewage in Shanghai.

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/193864706783750484

Publication date: January 1, 2006

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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