Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Characteristics of Pollutant Concentration from Livestock Wastewater Effluent Combined with Stormwater Runoff

강우시 및 건기시 축산지역에서 배출되는 오염물질의 유출특성 비교

  • Tobio, Jevelyn Ann S. (Department of Civil and Environmental Engineering, Kongju National University) ;
  • Maniquiz-Redillas, Marla C. (Department of Civil and Environmental Engineering, Kongju National University) ;
  • Lee, Yuwha (Korea Institute of Construction Technology) ;
  • Kim, Lee-Hyung (Korea Institute of Construction Technology)
  • ;
  • ;
  • 이유화 (한국건설기술연구원 도로연구실) ;
  • 김이형 (한국건설기술연구원 도로연구실)
  • Published : 2012.11.30
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Abstract

In this research, the levels of concentrations from the junction of effluent from wastewater treatment plant during dry days and combined with runoff from the surrounding 11 ha livestock catchment area during wet days were determined to investigate the relationships of the concentration of various pollutants such as particulates, nutrients and organics originating from point and nonpoint sources. Manual sampling was conducted from October 2008 to December 2011 during dry and wet days. Based on the results, the flow rates and concentrations of most pollutant parameters were increased during wet days. It was found out that the effluent wastewater combined with stormwater runoff has low BOD to TN/TP ratio and high TN/TP to BOD ratio. Therefore, it is needed to employ other treatment methods to effectively manage the wastewater and reduce the pollutant discharge to receiving water bodies.

축사지역은 가축분뇨처리장으로부터의 오염물질 배출농도가 높아 인근 하천의 수질 및 수생태계에 큰 영향을 끼친다. 또한 강우시에는 축사주위에 축적되어 있던 각종 비점오염물질들이 강우유출수와 함께 유출되어 처리장 방류수와 함께 인근 하천의 주요 오염원으로 작용한다. 그러나 점오염원으로 배출되는 처리장의 배출수와 비점오염원 형태로 배출되는 강우유출수의 오염물질 유출특성이 달라 관리에 어려움을 겪고 있다. 본 연구에서는 축사지역의 점및 비점오염원의 특성을 분석하여 향후 가축분뇨 관리대책 수립에 필요한 기본자료를 제공하고자 한다. 연구대상지역은 10ha의 돈사 지역이며 모니터링은 2008년 10월부터 2011년 11월까지 3년동안 수행되었다. 입자상 물질 및 인의 배출농도는 비점오염원에서 높게 나타났으며, 유기물질 및 질소의 배출농도는 점오염원에서 높게 나타났다. 또한 비점오염원이 섞인 유출수에서는 TN/TP 비에 비해 낮은 BOD 농도를 보였다. 축사지역의 가축분뇨관리는 비점오염원에서의 입자상 물질 관리와 유기물질에 비해 높게 배출되는 점오염원의 영양염류 관리가 필요한 것으로 나타났다.

Keywords

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