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2011•Journal of Hebei University of EngineeringRequires access

Treatment of sedimentation tank effluent water by PAC-UF process

Kai Li

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Abstract

The combined process of the powdered active carbon(PAC) and the ultrafiltration(UF) was used to treat effluent of sedimentation tank in a waterworks.The influences of the PAC dosage(0、10、20 and 40 mg.L-1) on the UF were studied.The results showed that adding PAC to the system could enhance the removal efficiencies of the PAC-UF for CODMn,UV254.The larger amount PAC added,the higher removal efficiency achieved.The addition of PAC could mitigate membrane fouling,and played an important role in the long-time stable operation of the PAC.And the performance of membrane could be recovered after chemical backwashing.

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What this paper is about

The combined process of the powdered active carbon(PAC) and the ultrafiltration(UF) was used to treat effluent of sedimentation tank in a waterworks.The influences of the PAC dosage(0、10、20 and 40 mg.L-1) on the UF were studied.The results showed that adding PAC to the system could enhance the removal efficiencies of the PAC-UF for CODMn,UV254.The larger amount PAC added,the higher removal efficiency achieved.The addition of PAC could mitigate membrane fouling,and played an important role in the long-time stable operation of the PAC.And the performance of membrane could be recovered after chemical backwashing.

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Available abstract

The combined process of the powdered active carbon(PAC) and the ultrafiltration(UF) was used to treat effluent of sedimentation tank in a waterworks.The influences of the PAC dosage(0、10、20 and 40 mg.L-1) on the UF were studied.The results showed that adding PAC to the system could enhance the removal efficiencies of the PAC-UF for CODMn,UV254.The larger amount PAC added,the higher removal efficiency achieved.The addition of PAC could mitigate membrane fouling,and played an important role in the long-time stable operation of the PAC.And the performance of membrane could be recovered after chemical backwashing.

Key concepts: Backwashing, Effluent, Sedimentation, Ultrafiltration (renal), Powdered activated carbon treatment, Membrane fouling, Chemistry, Fouling

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