MBR处理校园生活污水技术与经济可行性研究

Technical and Economic Feasibility Study on Sanitary Sewage Treatment in University Campus by MBR Processes

采用一体化膜生物反应器(A/O+MBR)生产性装置处理低浓度校园生活污水,对其工艺的技术与经济的可行性进行分析。试验结果表明,出水COD浓度平均值为17 mg/L,平均去除率为92.6%,出水NH_4^+-N浓度平均值为1.28 mg/L,平均去除率为95.8%,满足《地表水环境质量标准》(GB 3838—2002)四类水的标准,而反硝化效果则由于碳源不足受到了一定的影响。对工艺进行了经济成本分析,处理水量1.0 m^3/h的试验装置投资成本为56 000元,运行费用为1.75元/m^3,稍低于上海市居民用自来水费2.41元/m^3。

A submerged membrane bioreactor （A/O＋MBR） was developed to study treatment of the domestic sewage from campus and to analyze the feasibility in technique and economy. The experimental study indicated that the average concentrations of COD and NH4^＋-N in the effluent were 17 mg/L and 1.28 mg/L respectively. The average removal rates of COD and NH4^＋-N were 92.6 % and 95.8 % respectively. It met the demand of wastewater reuse, and reached the fourth level of the ＂Environmental quality standards for surface water＂（GB 3838--2002）. Denitrification was affected due to the lack of carbon source. In this study with a 1.0 m^3/h handling capability, the capital cost was 56 000 RMB and the operation cost was 1.75 RMB/m^3, a little lower than the cost of tap water fee 2.41 RMB/m^3 in Shanghai.