排灌机械工程学报2018，Vol.36Issue(3)：209-214,6.DOI:10.3969/j.issn.1674-8530.17.0123
表面流人工湿地处理污染河水的净化效果
Purification effects of surface flow constructed wetland in treating polluted river water
摘要
Abstract
To provide technical support for a demonstration project-efficient pollutant removal surface flow constructed wetland system,purification effects of the system on main pollutants such as nitrogen (TN) and ammonia nitrogen (NH4+-N) in Fuyang River were studied.A pilot experiment was carried out in Yongnian rainfall runoff test field of Handan at 430 mm/d hydraulic load with 0.5 d hydraulic retention time.The results show that the is system subject to 51.89％ and 47.00％ average removal rates for TN and NH4+-N,respectively,exhibiting a good purification effect on polluted river water body.Based on the inflow water body quality during the trial,it turns out that the maximum working loads of the system are 8.95 mg/L and 2.16 mg/L for TN and NH4+-N,and the corresponding maximum removal rates are 60.00％ and 56.48％,respectively.The TN and NH4+-N concentrations along the course are examined.It is identified that dissolved oxygen (DO) is one of the key factors influencing TN and NH4+-N removal,especially for NH4+-N removal.The trend of NH4+-N concentration slightly increases in the upper course,significantly decreases in the middle and gets stable in the tail end.The TN concentration shows a steadily decreasing trend along the course.关键词
表面流人工湿地/总氮/氨氮/平均去除率/浓度沿程变化Key words
free surface wetland/TN/NH4+-N/average removal rate/concentration along the flow分类
农业科技引用本文复制引用
张智超,王树谦..表面流人工湿地处理污染河水的净化效果[J].排灌机械工程学报,2018,36(3):209-214,6.基金项目
国家水体污染控制与治理科技重大专项(2014ZX07203-008) （2014ZX07203-008）
