改良A2/O+深度处理工艺在污水厂扩容改造中的设计应用研究

Design and Application of Improved A^2/O+Advanced Treatment Process in Wastewater Plant Upgrade

静乐县污水净化中心现有污水处理规模8000 m3/d,拟通过扩容改造达到16000 m3/d,要求出水达到地表水V类标准。通过分析进出水水质,结合工程实际情况进行工艺比选,最终确定采用改良A2/O+高密度澄清池+滤布滤池作为核心处理工艺。从实际运行数据可看出,扩容改造工程的工艺对生活污水中各类污染物都有良好的处理能力,出水水质稳定达到了地表V类水质标准,运行成本低,可有效减少汾河下游水体污染,保证饮用水安全,对同类污水厂的建设设计及扩容改造有借鉴和参考意义。

As the current wastewater treatment ability of Jingle wastewater treatment plant(WWTP)can hardly satisfy the growing demand,an expansion project is planned to expand the treatment ability from 8000 m3/d to 16000 m3/d.The quality of treated water should meet the fifth class of environmental quality standard for surface water.The influent and effluent water quality are analyzed,and different treatment processes are compared.A combination of improved A2/O,high-density clarifier and cloth filter is chosen as the core treatment process.From the actual operation data,it is concluded that the effluent water quality can satisfy the fifth class of environmental quality standard for surface water with low investment,which helps to reduce downstream water contamination and ensure drinking water safety.The project can provide reference for design,construction,and expansion of similar WWTPs.