叠层生态滤床技术在生活污水处理中的应用研究

Research on engineering application of laminated ecological filter bed in the treatment of domestic sewage

针对农村生活污水的特点,设计叠层生态滤床,并将其应用于浙西山区农村生活污水的处理。运行结果表明,系统出水的COD、氨氮、总氮、总磷质量浓度分别为18.20、0.492、0.77、0.129 mg/L,去除率分别达到43.30%、56.42%、42.11%、19.88%,出水的COD、氨氮、总氮、总磷均满足《城镇污水处理厂污染物排放标准》(GB 18918—2002)一级A标准。叠层生态滤床处理农村生活污水的吨水投资成本较低,后期运行基本不产生费用,而且在后期管理上不需要配备专门的技术人员,适用于不同经济发展程度农村的生活污水处理,具有良好的推广价值。

A laminated ecological filter bed was designed to treat the rural domestic sewage in western mountain area of Zhejiang Province.Results indicated that the concentrations of COD,ammonia nitrogen,TN and TP in effluent water were 18.20,0.492,0.77,0.129 mg/L,and their removal rates were 43.30%,56.42%,42.11% and 19.88%.The effluent COD,ammonia nitrogen,TN and TP could met the standard of class A in urban sewage treatment plant pollutant discharge standard （GB 18918-2002）.The laminated ecological filter bed had lower investment cost,no postrun cost,and does not need to be equipped with specialized technical personnel.It was suitable for rural domestic sewage treatment in areas with different economic development levels,and had good promotional value.