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《Heilongjiang Hydraulic Science and Technology》 2018-08
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Efficacy of Surface Constructed Wetland to Remove Ammonia and Nitrogen of Fuyang River in Handan City

WANG Dan-yang;YAN Zhi-hong;ZHAO Xin-kai;LU Ze-yu;Water Conservancy and Hydropower Institute of Hebei Engineering University;  
The Nessler 's reagent Spectrophotometric method was adopted to conduct the field continuous sample collection monitoring for five days in line with the concentration of nitrogen and ammonia existed in trial circulation system of surface constructed wetland in the Yongnian rainfall runoff test field in Handan in October(cold period),2016 and July,2017(warm period) respectively,to research its removal effectiveness and law of nitrogen and ammonia existing in water body of the Fuyang river,to explore the feasibility to restore and purify the Fuyang river water body polluted by nitrogen and ammonia by adopting the surface constructed wetland,finally,to provide accordance for establishment and application of high-efficient pollution removal wetland system demonstration project in Yongnian flood retarding basin. The surface constructed wetland operated with 1.17 m3/(m2·d-1) of hydraulic loading and 0.5 d of hydraulic retention time. Removal rate of the nitrogen and ammonia due to wetland was taken as the justification standard in the test,the results showed that: during two monitoring time intervals,after purification by surface constructed wetland purification system,the removal rate of nitrogen and ammonia existing in water body of the Fuyang river,may reach 68. 58% and 76. 67% in cold period and warm period under preliminary concentration respectively,increasing from poor water quality with V to Ⅳ,even reaching Ⅲ category of water quality; the removal effects of the wetland were different according to different concentration gradients,for water with low concentration of ammonia and nitrogen,the removal rate of ammonia nitrogen increased with the increase of ammonia and nitrogen concentration into water.
【Fund】: 国家水体污染控制与治理科技重大专项(2014ZX07203-008);; 滏阳河下游典型湿地植物配置及水质净化技术研究(1723209055-4)
【CateGory Index】: X522
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