多级生态处理工艺在尾水深度处理工程中的应用

Application of multi-step ecological treatment process in tailwater advanced treatment project

采用多级生态处理工艺深度处理城镇生活污水厂尾水,研究多级生态处理工艺深度处理尾水效果和原理以及构筑物设计参数。实践结果表明:运用多级生态处理工艺深度处理城镇生活污水厂尾水,污水厂尾水排放标准为《城镇污水处理厂污染物排放标准》(GB18918—2002)一级A标准时,多级生态处理工艺出水质量浓度稳定优于《地表水环境质量标准》(GB3838—2002)Ⅳ类水标准,且多级生态处理工艺运行管理费用几乎为零,兼具良好的环境效益和社会效益。

An effluent from a municipal wastewater treatment plant was treated advanced by using a multi-step ecological treatment process,the treatment efficiencies,mechanism and devise parameters of a multi-step ecological treatment process was developed.The practice results indicated that:when using the multi-step ecological treatment process to treat advanced the tailwater of urban domestic sewage plant,and the discharge standard of the tailwater of sewage plant is the classⅠ(A)of“urban sewage treatment plant pollutant discharge standard”(GB18918—2002),the quality concentration of the effluent of multi-step ecological treatment process is better than theⅣclass of“surface water environmental quality standard”(GB3838—2002).The management cost of the multi-step ecological treatment process was nearly zero,the social benefit and environmental benefit were obvious.