Performance Evaluation of the Free Water Surface Constructed Wetland Treating Nonpoint Source Pollutants in the Agricultural Area
作者： Sun Hong Lee Sung Min Cha
DOI: 10.4172/2161-0525.1000280
关键词:
摘要: Water quality impairment from nonpoint source pollution is one of the critical causes surface water eutrophication in rivers and lakes surrounding agricultural area, Korea. In Songchon Constructed Wetland (SCW) located Yeongsan (YS) watershed which has about 1,000 km2 (total area: 3,471 km2) for 19 times intensive field monitoring 2010 were conducted with various rainfall patterns more samples measured analyzed laboratory. To identify relationship between meteorological conditions removal efficiency constructed wetland, principal component analysis (PCA) ternary plot was used experiment data. Mean treatment performance TSS, BOD5, COD, TN, TP 16.4%, 42.1%, 43.7%, 36.6%, 57.1%, respectively, as a method pollutant load reduction multiple tests storm events. PCA results revealed that depth, intensity, antecedent dry days (ADDs) can be major components representative each component. Also, contour plots showed SCW area during events affected by three conditions. These phenomena applicable to develop NPS discharge model elucidate runoff using rain radar drainage area.
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