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Effect of Dosing Powdered Activated Carbon on Operational Performances of MBR

ZHANG Feng-jun1，WANG Shun-yi1， LIU Tian2， SHA Na1， WANG He1， ZHOU Hai-lin1   

  1. 1.College of Environment and Resources, Jilin University, Changchun 130026, China;2.College of Environmental Sciences,Peking University,Beijing 100871,China
  • Received:2006-10-20 Revised:1900-01-01 Online:2007-03-26 Published:2007-03-26
  • Contact: ZHANG Feng-jun

Abstract: Under the same feed and operating conditions, membrane permeability and the removal effect of contaminant in the reactor one (dosing 12.3 g(1 100 mg/L) powdered activated carbon, PAC) and reactor two (not dosing PAC) were studied and compared. Moreover the mechanism that PAC enhancs the membrane permeability was analyzed. The results of the test showed that the decreasing rate of membrane flux was much slower in reactor one compared with that in the reactor two. And the results also showed that PAC addition not only changed the characteristics of mixed liquor but also reduced the content of extracellular polymeric substances (EPS) and microscopic colloids greatly, so the decline rate of membrane flux delayed significantly, and the higher membrane flux of MBR was maintained for a long time.

Key words: membrane bio-reactor(MBR), PAC, membrane flux, EPS

CLC Number: 

  • X703
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