生态湿地技术在城市污水处理厂尾水深度处理中的应用

Application of Ecological Wetland Technology in Advanced Treatment of Tail Water of Urban Sewage Treatment Plant

在现代的城市污水处理厂中,生态湿地技术一般是用于深度处理尾水。基于此,本文根据实际应用案例,分析了该技术在处理尾水时的工艺流程和设计参数等,并针对重要的技术指标进行了研究。研究结果显示,生态湿地技术可应用于城市污水处理厂的尾水处理,并获得了良好的净化效果。同时,该技术对于COD、BOD_(5)、NH_(3)-N以及TP等几种物质的处理效率可分别达到60.1%、55.3%、76.6%以及40.5%乃至以上,且经尾水处理的出水水质能达到有关规定中的三类水标准。因此,该技术的有效应用,能帮助污水处理厂有效减少向河流、河道排放的污水中污染物的含量,这对改善城市区域水环境起到了关键作用。

In modern urban sewage treatment plants,ecological wetland technology is generally used for advanced treatment of tail water.Based on this,according to the actual application case,this paper analyzes the process fl ow and design parameters of the technology in the treatment of tail water,and studies the important technical indicators.The results show that the ecological wetland technology can be applied to the treatment of the tail water of the municipal sewage treatment plant,and has obtained a good purifi cation effect.At the same time,the treatment effi ciency of COD,BOD_(5),NH_(3)-N and TP can reach 60.1%,55.3%,76.6%and40.5%or above,respectively,and the quality of effl uent treated by tail water can reach the three kinds of water standards specifi ed in relevant regulations.Therefore,the effective application of this technology can help the sewage treatment plant to effectively reduce the pollutant content in the sewage discharged to rivers and rivers,which plays a key role in improving the water environment in urban areas.