A^2O-MBR工艺处理校园生活污水与回用评价  

Assessment of A^2O/MBR Process for Campus Domestic Sewage Treatment and Reuse

作　　者：胡以松[1] 王晓昌[1] 张永梅[1] 陈华[1] 金鹏康[1] 

机构地区：[1]西安建筑科技大学环境与市政工程学院,陕西西安710055

出　　处：《中国给水排水》2012年第21期20-22,共3页China Water & Wastewater

基　　金：国家自然科学基金资助重点项目(50838005);国家自然科学基金资助项目(51178376)

摘　　要：将A2O工艺与采用PVDF柱式中空纤维膜组件的MBR相结合,构建了处理量为2 000 m3/d的A2O-MBR组合工艺,采用其处理低碳氮比值校园生活污水,考察了对有机物、氮和磷的去除效果。该工艺对COD、NH4+-N、TN的平均去除率分别为90%、98%、45%左右,出水COD、NH4+-N、TN平均值分别为18、0.2、16 mg/L;出水TP均值在1.5 mg/L左右,经化学除磷后能达到1 mg/L以下。出水水质优于《城市污水再生利用城市杂用水水质》(GB/T 18920—2002)中冲厕及绿化用水水质的要求并全部用于校园回用,表明A2O-MBR组合工艺在污水处理及回用领域具有很好的应用前景。By combining A2O process with the membrane bioreactor （MBR） with PVDF hollow fiber membrane modules, a combined process with treatment capacity of 2 000 m^3/d was developed and used to treat campus domestic sewage with low C/N ratio. The removal efficiencies of organic substance and nutrients were investigated. The average removal rates of COD, NH4^＋ - N and TN were 90% , 98% and 45% respectively. The average effluent concentrations of COD, NH4^＋N, TN and TP were about 18, 0.2, 16 and 1.5 mg/L. The effluent concentration of TP dropped below 1 mg/L after adopting a chemical phosphorus removal method. The effluent quality met the requirements for toilet flushing and greening in Reuse of Urban Recycling Water--Water Quality Standard for Urban Miscellaneous Water Consumption （GB/T 18920 -2002）, and all the effluent was reused for non-potable purposes, indicating that A2O/MBR combined process was an effective technology for wastewater treatment and reuse.

关 键 词：A2O-MBR组合工艺 碳氮比 校园生活污水 回用 

分 类 号：X703[环境科学与工程—环境工程]