하수처리구역내 단독정화조의 성능평가 및 최적 모형의 제안

Evaluation of the Septic Tank Performance in the Sewage Treatment Area and Suggestion of an Optimum Model

  • 임봉수 (대전대학교 환경공학과) ;
  • 정금희 (충청남도보건환경연구원) ;
  • 왕택걸 (대전대학교 환경문제연구소)
  • Lim, Bong-Su (Department of Environmental Engineering, Daejeon University) ;
  • Jung, Keum-Hee (Chungnam Health and Environmental Research Institute) ;
  • Wang, Ze-Jie (The Institute of Environmental Studies, Daejeon University)
  • 투고 : 2007.04.30
  • 심사 : 2007.05.17
  • 발행 : 2007.05.30

초록

This study was carried out to recommend the systematic improving practice for the effective operation of septic tank, and the evaluation of its BOD and nutrient removal efficiency depending on process, the survey of characteristics of FRP material, and the suggestion of optimum septic tank model within sewage treatment area. The average BOD concentration and BOD removal efficiency of septic tank which was carried out the cleaning periodically in 63.9 mg/L and 77.8%, shows good quality better than the septic tank which was not carried out the cleaning regularly. Maximum load of tensile, flexural and compressive strength increased in proportion to its thickness, and the contents standard 25% of glass fiber required upgrade over than 30%. Configuration and performance for the optimum of the septic tank suggests that over $0.75m^3$ of the effective total volume, adding to over $0.25m^3$ a man for more than 5 men of the treated person, retention time should be within one day. Improving plans about facility and materials quality of the septic tank have an obligation that protective wall ought to install on the concrete bottom and side faces to prevent crumble or transform from loading of the ground or upper part of the structure on the tank setting. And it is eliminated the uneffective resisting pressure and it keeps off circulate imperfect products by strengthening of the test methods such as stretching strength, pressing strength, glass fiber contents and thickness.

키워드

과제정보

연구 과제 주관 기관 : 한국과학재단

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