A/O-MBR处理某经济区市政污水的效能  

Efficiency on Municipal Wastewater Treatment by Anoxic /Aerobic-Membrane Bioreactor in A City Economic Zone

作　　者：权威[1] 张磊[1] 

机构地区：[1]天津大学环境科学与工程学院,天津300072

出　　处：《城市环境与城市生态》2011年第6期40-42,共3页Urban Environment & Urban Ecology

基　　金：水体污染控制与治理科技重大专项(2008ZX07314-003)

摘　　要：采用A/O-MBR法处理某经济区市政污水,对其进、出水的水质进行连续监测,考察系统稳定性和处理效果。结果表明,在水力停留时间12小时,污泥龄30天,回流比75%,好氧段DO浓度1.3～8.5 mg/L的条件下,系统对COD、氨氮、总氮、总磷的平均去除率分别为92.04%、93.66%、78.04%、91.06%。反硝化作用是影响整体脱氮效果、效率的控制步骤,进水C/N比值较低是影响反硝化作用的重要因素;总磷中颗粒型成分占较大比例,需定期排泥;系统整体运行稳定,满足处理要求。The A/O-MBR process was used to treat municipal wastewater.The quality of influent and effluent was monitored continuously in order to inspect the stability of the system and the treatment efficiency of effluent.The results showed that the average removal rates of COD,NH3-N,TN and TP reached 92.04%、93.66%、78.04%、91.06% respectively under the conditions of HRT 12 h,SRT 30 d,sludge return ratio of 75% and dissolved oxygen（DO） of 1.3 to 8.5 mg/L in aerobic area.Denitrification was the control step affecting the overall nitrogen removal efficiency,and low C/N of influent was an important factor affecting denitrification.The sludge should be removed regularly because the particulate phosphorus components were in a higher proportion.The whole system was stable and would meet the processing requirements.

关 键 词：缺氧/好氧 膜生物反应器 市政污水 

分 类 号：X703[环境科学与工程—环境工程]