立体式人工湿地处理微污染源水的应用与研究

方法]探讨立体式人工湿地在微污染源水体处理中的应用。方法]提出了一种立体式人工湿地模式,重点分析了运用该模式的嘉兴石臼漾水厂引水河道新塍塘的水质生态净化中试工程,并从水质水量、季节气候、物种配置以及管理维护4个方面,探讨了该项技术净化水质的影响因素。结果]在夏秋两季,3种不同水力负荷的工况下,中试工程能够改善水体透明度及溶氧环境,有效降低了微污染源水中的SS、CODCr、NH3-N、TN、TP等水质指标,出水基本能稳定达到地表水III类标准。结论]该立体式人工湿地对微污染源水的净化处理是可行的,具有极其广阔的应用价值与推广前景。

Application of a Stereo Constructed Wetland Mode to the Treatment of Micro-polluted Source Water

Objective] The study aimed to discuss the application of a stereo constructed wetland to the treatment of micro-polluted source water.Method] In this study,a new stereo constructed wetland mode was put forward,and a pilot project of water ecological purification in Xinsheng River,the diversion channel of Shijiuyang Waterwork in Jiaxing City,were analyzed.Afterwards,the impact factors of water purification by the technology were discussed from water quality and quantity,season and climate,species configuration,management and maintenance.Result] Under three different hydraulic loading conditions,the pilot project effectively improved water SD and DO level,and reduced SS,CODCr,NH3-N,TN and TP significantly in summer and autumn,so that effluent water quality reached surface water standard at Grade III.Conclusion] The stereo constructed wetland mode composed of constructed wetland and underwater forest used to treat micro-polluted source water is feasible and has a good promotion prospect.