兼氧MBR工艺在北方农村污水处理工程中的应用
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摘要
结合我国北方农村污水的特征和处理现状分析,以辽宁省某村的工程案例为例,重点介绍了兼氧MBR工艺在北方农村污水处理的成功应用情况。试运行期间,常温出水COD及NH_4~+-N符合一级B排放要求,低温出水NH_4~+-N高于一级B排放标准,提高曝气量后得到改善。长期运行效果显示出水水质良好,各项指标均稳定达到城镇污水处理厂污染物排放标准(GB 18918—2002)的一级B排放标准要求。
Combined with the analysis on the characteristics and treatment status of rural sewage in northern China,taking the project case of a village in Liaoning Province,China,as an example,the situation of successful application of facultative oxygen MBR process to rural sewage treatment in northern China is introduced emphatically. During the trial operation,the COD and NH_4~+-N at ambient temperature meet the Ⅰ-B discharge requirements. The low-temperature effluent NH_4~+-N is higher than that of Ⅰ-B discharge standard. But the situation can be improved,after the aeration rate is raised. The long-term operation results show that the quality of the effluent is good,and all indicators are stably meeting the requirements for Grade Ⅰ-B discharge standard,specified in the Pollutant Discharge Standard for Urban Sewage Treatment Plants(GB 18918—2002).
Combined with the analysis on the characteristics and treatment status of rural sewage in northern China,taking the project case of a village in Liaoning Province,China,as an example,the situation of successful application of facultative oxygen MBR process to rural sewage treatment in northern China is introduced emphatically. During the trial operation,the COD and NH_4~+-N at ambient temperature meet the Ⅰ-B discharge requirements. The low-temperature effluent NH_4~+-N is higher than that of Ⅰ-B discharge standard. But the situation can be improved,after the aeration rate is raised. The long-term operation results show that the quality of the effluent is good,and all indicators are stably meeting the requirements for Grade Ⅰ-B discharge standard,specified in the Pollutant Discharge Standard for Urban Sewage Treatment Plants(GB 18918—2002).
引文
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[2]张鑫,付永胜,范兴建,等.农村生活污水排放规律及处理方法分析[J].广东农业科学2008(8):139-142.
[3]吴迪,左剑恶.复合生物陶粒工艺在农村污水处理工程中的应用[J].水处理技术,2010,36(10):128-131.
[4]李桥龙,潘学军,刘旭军,等.塔式生物滤池在农村生活污水处理中的应用研究[J].工业水处理,2017,37(7):43-46.