深床滤池多模式运行用于城镇污水处理厂提标改造

Application of Deep-bed Filter with Multi-mode Operation in Wastewater Treatment Plant Upgrading Reconstruction

浙江某城镇污水处理厂采用深床反硝化滤池工艺进行一级A提标改造,对改造后的运行模式、处理效果和经济效益进行了分析。结果表明,改造后的出水水质可以稳定达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)的一级A标准。深床滤池通过硝化或反硝化的多模式运行,仅增加运营成本0. 112元/m^3,具有良好的经济效益、环境效益和社会效益。

Deep-bed denitrification filter process was used in a wastewater treatment plant upgrading and reconstruction project in Zhejiang province to meet the first level A standard. The operation mode, effect and economic benefit were analyzed. The results showed that the effluent quality could steadily meet the first level A criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant（ GB 18918 -2002） after reconstruction. The extra operation costs were only 0.112 yuan/m^3, by addition of deep-bed filter with multi-mode operation of nitrification or denitrification, which showed good economic, environmental and social benefits.