FOUR STAGE HYBRID CONSTRUCTED WETLANDS TREATING LOW-STRENGTH AQUACULTURE WASTEWATER WITH AND WITHOUT ARTIFICIAL AERATION
文献类型： 外文期刊
作者： Zhang, Shi-Yang 1 ; Li, Gu 1 ; Li, Xiaoli 1 ; Tao, Ling 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Minist Agr China, Key Lab Freshwater Biodivers Conservat, Wuhan 430223, Peoples R China
2.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Wuxi 214081, Peoples R China
期刊名称：ENVIRONMENT PROTECTION ENGINEERING （ 影响因子：0.977； 五年影响因子：1.06 ）
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收录情况： SCI
摘要： Driven by the booming demands for healthy food, aquaculture industry has to deal with the problem of water pollution appropriately so as to achieve sustainable development. In this study, a combination of four stage CWs (three horizontal subsurface flows followed by one free water surface flow) was configured to treat low-strength aquaculture wastewater. For performance assessment, the wetlands were monitored over three years, during which artificial aeration was added to them. By the results, the organic matters and nutrients were mainly sequestered in the anterior subsurface flows, while the surface flow mainly contributed to DO improvement. These results probably implied no necessity of excessive subsurface flows connected in a staged manner. In addition, the artificial aeration improved the treatment performance on ammonium-N, TN and TP in the first-stage CW.
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