小型生活污水站提标改造设计研究

Research on the Design of Small-scale Domestic Sewage Station Upgrade

介绍了山西省某地甲乙两座小型生活污水厂提标改造设计的特点。为保证脱氮、除磷的效果,同时兼顾节约占地的需求,设计在原工艺基础上,对现状AA/O生物池进行改造,增加深度处理装置;保证出水水质中COD、氨氮、总磷三项指标达到《地表水环境质量标准标准》(GB3838-2002)中的V类标准,其他指标达到并优于城镇污水处理厂污染物排放标准(GB18918-2002)的一级A排放标准。

This paper introduces the characteristics of upgrading design of A and B small domestic sewage plants in Shanxi Province. In order to ensure the effect of nitrogen removal and phosphorus removal, and take into account the requirements of saving land area, the design on the basis of the original process, the current A2/O biological tank was modified, adding depth treatment device;Ensure that the three indicators of effluent water quality, COD, ammonia nitrogen and total phosphorus, meet the CLASS V standards of Surface Water Environmental Quality Standards(GB3838-2002), and other indicators meet and are better than the class A discharge standards of pollutants in urban sewage treatment plants(GB 18918-2002).