Application of a constructed wetland for non-point source pollution control
Application of a constructed wetland for non-point source pollution control
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DOI：
10.2166/wst.2001.0884
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发表时间：
2001-01-01
影响因子：
2.7
通讯作者：
Wen, CK
中科院分区：
文献类型：
--
作者：
Kao, CM;Wang, JY;Wen, CK
在台湾，非点源污染是造成地表沃茨污染的主要原因之一。本研究的主要目的是评估使用人工湿地去除水中污染物和改善水质的效果。在位于台湾南部的国立中山大学校园内建造了一个野外规模的人工湿地系统，以去除（1）雨水径流产生的有害污染物，以及（2）学校排水管中部分未经处理的废水。人工湿地为40米（长）× 30米（宽）× 1米（深），每天从学校排水管道接收约85立方米未经处理的废水。湿地上生长的植物有浮水植物Pistia stratiotes L.和挺水植物（Phragmites communis L.）物种在监测期间，分析了一次重大风暴事件和基线水质样本。分析结果表明，人工湿地去除了大量的有害污染物和废水成分。超过88%的氮，81%的化学需氧量（COD），85%的重金属，和60%的总悬浮固体（TSS）所造成的暴雨径流被湿地系统去除前排放。研究结果可为人工湿地的设计提供参考。
In Taiwan, non-point source (NPS) pollution is one of the major causes of impairment of surface waters. The main objective of this study was to evaluate the efficacy of using constructed wetlands on NPS pollutant removal and water quality improvements. A field-scale constructed wetland system was built inside the campus of National Sun Yat-Sen University (located in southern Taiwan) to remove (1) NPS pollutants due to the stormwater runoff, and (2) part of the untreated wastewater from school drains. The constructed wetland was 40 m (L) x 30 m (W) x 1 m (D), which received approximately 85 m(3) per day of untreated wastewater from school drainage pipes. The plants grown on the wetland included floating (Pistia stratiotes L.) and emergent (Phragmites communis L.) species. One major storm event and baseline water quality samples were analyzed during the monitoring period. Analytical results indicate that the constructed wetland removed a significant amount of NPS pollutants and wastewater constituents. More than 88% of nitrogen, 81% of chemical oxygen demand (COD), 85% of heavy metals, and 60% of the total suspended solids (TSS) caused by the storm runoff were removed by the wetland system before discharging. Results from this study may be applied to the design of constructed wetlands for NPS pollution control and water quality improvement.