平板式MBR处理城市生活污水的性能与经济性分析

Performance of Plate Membrane Bioreactor for Municipal Domestic Wastewater Treatment and Its Economic Analysis

采用处理规模为60 m3/d的平板式膜生物反应器处理城市生活污水,考察了其对有机物和氨氮的去除效果,并对工程投资和运行费用进行了分析。结果表明,MBR系统对COD、BOD5和NH4+-N的平均去除率分别为93.1%、99.1%和89.0%;出水水质达到了《城市污水再生利用城市杂用水水质》(GB/T 18920—2002)和《城市污水再生利用景观环境用水水质》(GB/T18921—2002)中河道类观赏性景观环境用水的水质要求。该系统的单位工程投资为2 200元/m3,运行成本为1.34元/m3。与传统的中水处理工艺相比,该工艺具有一定的综合优势。

A plate membrane bioreactor （MBR） with capacity of 60 m^3/d was applied for municipal wastewater treatment. The removal efficiencies of organic matter and ammonia nitrogen were investigated, and the project investment and operation cost were analyzed. The results show that the removal rates of COD, BOD5 and NH4^＋ - N are 93.1%, 99.1% and 89.0% respectively in the MBR. The effluent quality meets the requirements of Reuse of Urban Recycling Water--Water Quality Standard for Urban Miscellaneous Water Consumption （GB/T 18920 -2002） and Reuse of Urban Recycling Water--Water Quality Standard for Scenic Environment Use （GB/T 18921 -2002）. The system＇s unit project investment is 2 200 yuan/m^3 , and the operation cost is 1.34 yuan/m^3. Compared to typical wastewater reuse treatment processes, the plate membrane bioreactor excels in terms of quality and costs.