采用水解酸化/氧化沟/高效纤维滤池工艺的污水厂设计

Project Design of Wastewater Treatment Plant by a Combined Process of Hydrolytic Acidification,Oxidation Ditch and High-efficiency Fiber Filter

某县城经济开发区污水处理厂一期设计规模为1.5×10^4 m^3/d,针对污水厂来水中含有一定比例工业废水的特点,采用水解酸化/氧化沟/高效纤维滤池工艺进行处理。该污水厂于2018年11月投入运行,在进水水质波动较大的情况下,出水COD<50 mg/L,SS<10 mg/L,NH3-N<3 mg/L,TN<15 mg/L,TP<0.4 mg/L,能稳定达到《城镇污水处理厂污染物排放标准》(GB 18918—2002)中一级A标准。污水厂厂区工程费用为6333.8万元,平均运行成本为0.78元/m^3。介绍了该污水处理厂的设计特点、主要构筑物参数、投资及运行成本,可供类似项目参考。

The influent of a wastewater treatment plant with the design scale of 15000 m^3/d consists of domestic sewage and industrial wastewater.The treatment process consists of hydrolytic acidification,oxidation ditch and high-efficiency fiber filter according to the characteristics of industrial wastewater in the wastewater treatment plant.The project was put into operation in November 2018,and under the great fluctuation of influent quality the effluent concentration of COD,SS,NH3-N,TN and TP were respectively lower than 50 mg/L,10 mg/L,3 mg/L,15 mg/L and 0.4 mg/L,which met the first class A standard of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB 18918-2002).The project cost was 63.338 million yuan,and the average operating cost was 0.78 yuan/m^3.The design features,parameters of main structures,investment and operation cost were introduced,that could provide reference for similar projects.