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Nutrients Removal Efficiency by Vegetation Density on Constructed Wetland from Small Watershed
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 Title & Authors
Nutrients Removal Efficiency by Vegetation Density on Constructed Wetland from Small Watershed
Ko, Jee-Yeon; Kang, Hang-Won; Lee, Jae-Sang; Kim, Chun-Song; Sakadevan, K.; Bavor, H.J.;
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This study was conducted to evaluate effects of 2 constructed wetlands with different vegetation states (plumpton park wetland and Woodcroft park wetland) for reducing non-point source pollution from small watershed consisted of residential and agricultural area in suburban district of Sydney, Australia. The total nitrogen and phosphate removal efficiency of Plumpton park constructed wetland, composed of stable and dense vegetation, were 38.3% and 26.2% and Woodcroft park constructed wetland having still poor vegetation due to the short time to settle down transplanted plants after construction, showed relatively low removal efficiency of 20.2% and 14.0%. The removal efficiency of inorganic nutrients such as , , were higher than total nitrogen and phosphate because plants and microorganisms in rhizosphere of constructed wetlands took up inorganic nutrients shortly. According to the type of wetland inflow, the nutrients removal efficiency of storm water flow was lower than base flow.
constructed wetlands;non-point source pollution;vegetation;nutrients removal efficiency;
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