净水技术2025，Vol.44Issue(4)：27-36,10.DOI:10.15890/j.cnki.jsjs.2025.04.004
人工湿地对城镇污水处理厂尾水深度处理技术研究现状
Current Research of Constructed Wetlands for Advanced Treatment Technologies of WWTPs Tailwater
摘要
Abstract
Constructed wetland is a typical technology for the advanced treatment of effluent from urban wastewater treatment plants(WWTPs),offering advantages such as low operating cost,simple maintenance,and good landscaping effects.[Objective]Constructed wetlands for effluent treatment often exhibit low nitrogen and phosphorus removal efficiencies,especially for nitrogen.But some measures can be taken to improve the efficiency of treatment.[Methods]The main measures to improve the treatment performance of constructed wetlands for effluent are summarized,including aquatic plants,substrates,combined processes,coupling with electrochemical processes,and enhancing denitrification.[Results]Different aquatic plants have varying removal effects on nutrients,and using a combination of different plants can enhance the purification effect of constructed wetlands.To ensure good purification performance,efficient functional substrates can be selected based on the pollutants to be removed,but factors such as the decline in treatment efficiency after substrate saturation and the cost of substrates need to be considered.Selecting different types of wetlands in series can effectively avoid the inherent defects of a single type wetland and improve the advanced purification effect in practical engineering.Coupling electrochemical technology with constructed wetlands can enhance treatment efficiency,but relevant research is currently in the pilot stage and is currently impossible in engineering applications.Adding additional carbon sources can enhance the heterotrophic denitrification capacity of constructed wetlands,but it has limited guidance for engineering practice;autotrophic denitrification,especially sulfur-based autotrophic denitrification,can maintain high nitrogen removal efficiency,but it is necessary to consider issues such as high sulfate content and low pH in the effluent.[Conclusion]Therefore,in practical engineering applications designers should develop specific implementation plans based on the advantages and disadvantages of different technologies to ensure high-efficiency purification of effluent by constructed wetlands.关键词
人工湿地/城镇污水处理厂尾水/水生植物/基质/组合工艺/电化学工艺/反硝化脱氮Key words
constructed wetland/tailwater of WWTP/aquatic plants/substrates/combined processes/electrochemical process/denitrification分类
资源环境引用本文复制引用
孙健,李露,王媚,李卿,邹磊,刘海燕..人工湿地对城镇污水处理厂尾水深度处理技术研究现状[J].净水技术,2025,44(4):27-36,10.基金项目
湖北省中国科学院科技合作专项项目(KY-N-S-2022-002) （KY-N-S-2022-002）
