A pilot scale anoxic/oxic membrane bioreactor(A/O MBR) for woolen mill dyeing wastewater treatment  

作　　者：ZHENG Xiang FAN Yao bo WEI Yuan song 

机构地区：[1]Department of Water Pollution Control Technology,Research Center for Eco Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China.

出　　处：《Journal of Environmental Sciences》2003年第4期449-455,共7页环境科学学报(英文版)

基　　金：NinthFiveYearNationalKeyProjectofScienceandTechnologyofChina(No .96 90 9 0 5 0 3 0 2 )

摘　　要：A pilot scale(10 m 3/d) anoxic/oxic membrane bioreactor(A/O MBR) was tested for dyeing wastewater treatment of woolen mill without wasting sludge in 125 days operation. Results showed that the effluent quality was excellent, i.e. effluent COD less than 25 mg/L, BOD 5 under 5 mg/L, turbidity lower than 0 65 NTU, and colour less than 30 DT, and met with the reuse water standard of China. The removal rates of COD, BOD 5, colour, and turbidity were 92 4%, 98 4%, 74% and 98 9%, respectively. Constant flux operation mode was carried out in this study, and backwash was effective for reducing membrane fouling and maintaining constant flux. Membrane fouling had heavy impact on energy consumption. More attention should be paid on pipe selection and design for the sidestream MBR system, too.A pilot-scale(10 m^(3)/d) anoxic/oxic membrane bioreactor(A/O MBR) was tested for dyeing wastewater treatment of woolen mill without wasting sludge in 125 days operation. Results showed that the effluent quality was excellent, i.e. effluent COD less than 25 mg/L, BOD_(5) under 5 mg/L, turbidity lower than 0.65 NTU, and colour less than 30 DT, and met with the reuse water standard of China. The removal rates of COD, BOD_(5), colour, and turbidity were 92.4%, 98.4%, 74% and 98.9%, respectively. Constant flux operation mode was carried out in this study, and backwash was effective for reducing membrane fouling and maintaining constant flux. Membrane fouling had heavy impact on energy consumption. More attention should be paid on pipe selection and design for the sidestream MBR system, too.

关 键 词：activated sludge BACKWASH constant flux dyeing wastewater treatment membrane bioreactor (MBR) woolen mill 

分 类 号：X791[环境科学与工程—环境工程]