Zheng Xiang, Fan Yao-bo, Wei Yuan-song
Department of Water Pollution Control Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
J Environ Sci (China). 2003 Jul;15(4):449-55.
A pilot-scale (10 m3/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, BOD5 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, BOD5, 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.
在125天的运行过程中，对一个中试规模（10立方米/天）的缺氧/好氧膜生物反应器（A/O MBR）进行了测试，用于处理毛纺厂的印染废水且不排泥。结果表明，出水水质优良，即出水化学需氧量（COD）小于25毫克/升，五日生化需氧量（BOD5）低于5毫克/升，浊度低于0.65 NTU，色度小于30度，达到了中国的回用水标准。COD、BOD5、色度和浊度的去除率分别为92.4%、98.4%、74%和98.9%。本研究采用恒通量运行模式，反冲洗对于减少膜污染和维持恒通量有效。膜污染对能耗有很大影响。对于侧流膜生物反应器系统，在管道选择和设计方面也应给予更多关注。
