생태와환경 (Korean Journal of Ecology and Environment)

  • 제49권3호
  • /
  • Pages.187-196
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  • 2016
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  • 2288-1115(pISSN)
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  • 2288-1123(eISSN)
한국수생태학회 (The Korean Society of Limnology)
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감조하천에 연결된 하수처리장 방류구의 거품 형성기작 해석 및 거품발생 저감기술의 실험적 현장적용

Explanation of Foaming Mechanism and Experimental Application of Foam Reduction Techniques in the Treated Wastewater Outlet of Wastewater Treatment Plant Connected to a Tidal River, Korea

  • 신재기 (한국수자원공사 낙동강통합물관리센터) ;
  • 조영수 (한국수자원공사 낙동강통합물관리센터) ;
  • 김영성 (한국수자원공사 K-water 연구원) ;
  • 강복규 (환경부 수생태보전과) ;
  • 황순진 (건국대학교 보건환경과학과)
  • Shin, Jae-Ki (Center for Integrate Water Management of the Nakdong River, Korea Water Resources Corporation (K-water)) ;
  • Cho, Youngsoo (Center for Integrate Water Management of the Nakdong River, Korea Water Resources Corporation (K-water)) ;
  • Kim, Youngsung (K-water Research Institute, Korea Water Resources Corporation (K-water)) ;
  • Kang, Bok-Gyoo (Aquatic Ecosystem Conservation Division, Water Environment Management Bureau, Ministry of Environment) ;
  • Hwang, Soon-Jin (Department of Environmental Health Science, Konkuk University)
  • 투고 : 2016.07.26
  • 심사 : 2016.09.29
  • 발행 : 2016.09.30
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초록

본 연구는 감조하천과 연결된 하수처리장 방류구에서 발생하는 거품의 형성기작 해석과 저감기술의 실험적용을 위하여 2015년 3월부터 2016년 7월까지 수행하였다. 거품은 방류구와 하천 수면 사이의 낙차에 의한 공기연행과 거품확산방지막에 의한 내부축적이 원인이었다. 특히 썰물 때와 방류량이 많을 때에 거품성장이 가장 활발하였다. 이를 해결하기 위하여 방류수로와 방류구에 각각 미세스크린 망과 수중방류 인공수로장치를 각각 설치한 후 실험하였다. 거품 저감효과는 각각 약 85.0~92.0%, 70.7~85.6% 범위였다. 또한, 거품뿐만 아니라 소음 등 부가적인 문제점도 해결할 수 있었고, 무엇보다도 민원예방에 기여할 것으로 본다. 본 연구는 단일 하수처리장을 대상으로 하였으나, 국내 다른 하수처리장의 유사한 사례에도 응용될 수 있을 것으로 사료된다.

This study was performed to improve the foaming generated in the effluent of wastewater treatment plant from March 2015 to July 2016. The main cause of foaming was air entrainment by an impinging jet and the internal accumulation by the diffusion barrier. Particularly, the foam growth was most active when there is low tide and larger discharge. To solve this problem, we experimented after installing fine mesh screen and the artificial channel device with underwater discharging outlet in the treated wastewater discharge channel and the outlet, respectively. As a result, the effects of foam reduction by devices ranged 85.0~92.0% and 70.7~85.6%, respectively. In addition, the foam and the noise were easily solved, first of all look to contribute to the prevention of complaints. Our device studies were applied to a single wastewater treatment plant. However, it is considered to be able to apply in other similar cases of domestic sewage treatment plants.

키워드

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