我国人工湿地在城市污水处理厂尾水脱氮除磷中的研究与应用进展

Removing Nitrogen and Phosphoros of Effluent from Wastewater Treatment Plants by Constructed Wetlands in China:An Overview

近年来人工湿地(Constructed Wetland)在城市污水处理厂尾水脱氮除磷中的研究与应用受到了广泛关注。通过文献调研,系统总结了我国不同区域污水处理厂二级生化出水的水质特征,重点讨论和分析了人工湿地类型及其运行操作对二级出水脱氮除磷效果的影响。作为一种深度处理二级出水的有效手段,人工湿地可大幅削减进入受纳水体的氮磷污染负荷,改善受纳水体的水质。强调根据二级出水特征与受纳水体的需求,因地制宜开展人工湿地的研究与应用。

Research and application of constructed wetlands（ CW） for removing nitrogen and phosphorus of effluent from wastewater treat- ment plants（ WWTPs） are recently paid more and more attention due to stringent regulations on water pollution control. With thoroughly liter- ature review, this paper summarizes the water quality characteristics of effluent from WWTPs in different regions of China, especially focuses on the impact of CW types and its operational parameters on nutrients removal of effluent. As a kind of cost-effective technology for nutrients removal of effluent from WWTPs, CW would play a key role in improving water quality of receiving water bodies through greatly reducing pol- lutants load of nitrogen and phosphorus. CW should be selected and applied in practice for advanced treatment of the secondary sewage ac- cording to characteristics of WWTPs′ effluent and water quality improvement of receiving water bodies.