厌氧反应器与好氧MBR组合工艺处理毛纺印染废水试验研究.pdfVIP

第25卷第5期 v0I．25．No．5 2004年9月 环 境 科 学 Sep．，2004 ENVIRoNMENTAL SCIENCE 厌氧反应器与好氧MBR组合工艺处理毛纺印染废水试验研究 郑祥，刘俊新 (中国科学院生态环境研究中心，北京 100085) 摘要：采用厌氧反应器与膜生物反应器(MBR)组合工艺处理毛纺印染废水，结果表明，当进水COD、BOD5和色度分别为128 -- 321 mg／L、36～95 mg／L和40～70倍时，出水COD、BOD5、色度、浊度的平均值分别为36．9 mg／L、3．7 mg／L、21倍、0．24 NTU，平均去除率分别达到80．3％％、95％、59％、99．3％，达到生活杂用水水质标准．在本研究中，开发了一种新型的利用生 物反应器内液位水头重力驱动连续出水的重力出流式膜生物反应器．在保留MBR处理效率高等优点的同时，省去传统的一 体式MBR出水抽吸泵及复杂的反冲洗设备．整个系统结构紧凑，投资少，操作简便．选择合适的曝气量有助于提高膜通量，且 可降低膜阻力的上升速率，有利于膜污染的控制． 关键词：膜生物反应器；厌氧反应器；毛纺废水处理；活性污泥 中圈分类号：X791 文献标识码：A 文章编号：0250．3301(2004)05．0102．04 Printing and Dyeing Wastewater Treatment Using Combined Process of Anaerobic Bioreactor and MBR ZHENG Xiang．LIU J un．xin (Research Center for Eco-Environmental Sciences，Chinese Academy of Sciences，Beijing 100085，China) Abstract：This paper describes a labor-scale experiment for printing and dyeing wastewater treatment of woolen mill using a combined process of an anaerobic reactor and a membrane bioreactor(MBR)．The experimental results showed that when the concentration of CO D，BOD5 and color in the influent were 128～321 mg／L，36～95 mg／L and 40～70 dilution times(DT)，the average concentra— tions of CO D，BOD5，color and turbidity in the effluent were 36．9 mg／L，3．7 mg／L，21 DT and 0．24 NTU，respectively，and the corresponding removal rates were 80．3％，95％，59％ and 99．3％ ，respectively．A new integrated membrane bioreactor by gravity drain of liquid level in the bioreactor was developed in this study．It not only lessens suction pump for effluent and controlling unit comparing tO the traditional integrated membrane bioreactor，but also has the characters of high and continuous flux，concise configu— ration and simple operation and maintenance．According to the experimental res