猪场养殖废水的工艺案例及探讨

Study on The Technology of Pig Farm Wastewater

如今养殖业的规模化、集约化的快速发展,由此产生大量的猪场养殖废水。猪场养殖废水较难处理:COD高(15000~30000mg/L)、NH3-N高(800~1500mg/L)、SS高(4000~20000mg/L)及排放量波动大。本文通过实际工程案例进行探讨养殖废水工艺。通过改良的A/O工艺运行后,最终出水达到《农田灌溉水质标准》,COD、NH3-N、SS分别可达到100,20,50mg/L以下。

At present,the rapid development of large-scale and intensive farming industry has resulted in a large number of pig farm wastewater.Pig farm wastewater treatment is difficult:high COD (15000~30000 mg/L),high NH3-N (800~1500 mg/L),high SS (4000~20000 mg/L) and large fluctuations in emissions. This paper discusses the process of aquaculture wastewater through practical engineering cases.After the operation of the improved A/O process,the final effluent reaches the “farmland irrigation water quality standard”,and the COD,NH3-N and SS can reach below 100 mg /L,20 mg /L and 50 mg/L respectively.