Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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A Study on the Water Quality Purification Effect of Aquatic Plants in field work

현장실험을 통한 수생식물의 수질정화 효과에 관한 연구

  • Lee Jong-Sung (Landscape Ecology Center, Chung Ma Environmental Impact Assessment) ;
  • Kim Ki-Nam (Ecology Center, Dong Woo Environmental Impact Assessment)
  • 이종성 (청마환경평가 경관생태연구소) ;
  • 김기남 (동우환경평가 생태연구소)
  • Published : 2005.10.01
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Abstract

Presently, aquatic plants are used for the water purification in inland water. This study was carried out to investigate the water purification effect of aquatic plants, Oenanthe javanica and Typha angustata, The experiment was conducted in outdoor flowing water was conducted for ten days, Water quality was measured in terms of water temperature, COD(chemical oxygen demand), SS(suspended solids), Total N, Total P. The results of field experimentation showed that hydraulic retention time was the earliest in July and August 2003, and there were not any particular changes of monthly water temperature in inflow water and outflow water. As we look at the changes taken place in inflow water and outflow water throughout the whole experiment period, the change of water quality in summer was salient, especially SS removal ratio showed distinguished change as $25\%$, when the pebble filter and aquatic were attached to it. The removal rate of COD, total N total P were $14,7\%,\;8\%\;and\;9\%$, respectively. In relating the length of water extension to the change in water quality, the water quality tended to get lower generally in proportion to hydraulic retention time.

Keywords

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