西北某污水处理厂提标改造的思路及实践应用

Upgrading and Reconstruction of a Municipal Wastewater Treatment Plant in Northwest China

为提升出水水质,西北某污水处理厂在原有处理规模上减量,并新增一套污水处理设施与原有设施并列运行,出水经沉淀池处理后汇合进入转盘滤池进行深度处理。实际运行结果表明,出水指标均能达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)的一级A标准,改造后运行效果良好。

In order to improve the effluent quality, a municipal wastewater treatment plant in northwest China was reconstructed via reduction of treatment capacity of the original facilities, and addition of a new treatment process which was used parallel to the old process. The effluent was precipitated in the sedimentation tank, then flew into the rotary disk filter. The operation result shows that effluent quality can meet the first level A criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant （GB 18918 -2002）. The reconstruction project shows effective treatment performance.