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Study on Reuse of Campus Washing Wastewater by Coagulation and Filtration Treatment

Zunju Zhang

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Abstract

By comparing three kinds of coagulants and coagulant aids,the suitable coagulant and dosage is selected.The campus washing wastewater is treated by the process of coagulation and filtration of no settling.The results indicate: in aspects of turbidity,COD and dosage,performance of composite high PAC is better than that of PAC and PFS and the effect of coagulant aid of PAM is not obvious.When without adding coagulant aid,40 mg/L dosage of composite high PAC and 7.5 m/h～10 m/h of filtration velocity,the removal of turbidity and COD can reach 90% and about 80% respectively and the water quality can meet reuse standard.

About this research paper

What this paper is about

By comparing three kinds of coagulants and coagulant aids,the suitable coagulant and dosage is selected.The campus washing wastewater is treated by the process of coagulation and filtration of no settling.The results indicate: in aspects of turbidity,COD and dosage,performance of composite high PAC is better than that of PAC and PFS and the effect of coagulant aid of PAM is not obvious.When without adding coagulant aid,40 mg/L dosage of composite high PAC and 7.5 m/h～10 m/h of filtration velocity,the removal of turbidity and COD can reach 90% and about 80% respectively and the water quality can meet reuse standard.

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Available abstract

By comparing three kinds of coagulants and coagulant aids,the suitable coagulant and dosage is selected.The campus washing wastewater is treated by the process of coagulation and filtration of no settling.The results indicate: in aspects of turbidity,COD and dosage,performance of composite high PAC is better than that of PAC and PFS and the effect of coagulant aid of PAM is not obvious.When without adding coagulant aid,40 mg/L dosage of composite high PAC and 7.5 m/h～10 m/h of filtration velocity,the removal of turbidity and COD can reach 90% and about 80% respectively and the water quality can meet reuse standard.

Key concepts: Turbidity, Filtration (mathematics), Coagulation, Settling, Wastewater, Reuse, Chemistry, Pulp and paper industry

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