수처리시설(수환경설계) 설계 레포트(WWTP 설계)
- 최초 등록일
- 2020.12.22
- 최종 저작일
- 2015.06
- 6페이지/
한컴오피스
- 가격 1,500원
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소개글
수환경시스템설계 수업 시, 수처리시설에 대한 설계레포트로 제출한 내용입니다.
목차
1. Population estimation after 20 years
2. Estimating sewage flow rate
3. Grit chamber
4. Equalization basin
5. Primary(First) clarifier
6. Secondary clarifier
7. Disinfection tank
8. Discharge sludge tank
9. Activated sludge tank
(1) Mean cell residence time(day)
(2) Hydraulic Retention Time(day)
(3) Aeration tank volume(㎥)
(4) The mass of solids production(kg/day)
(5) The volume of waste solids production(㎥/day) : Assume that the secondary clarifier solids are 1% solids ; assume that cells have a density of water
(6) The aeration requirements : volume of air per time ; assume a transfer efficiency of 20%
본문내용
3. Grit chamber
평균유량(Daily mean flow)에 수리학적 체류시간(Hydraulic Retention Time)을 곱하여 Grit chamber의 Volume을 구할 수 있으며, 평균유량을 Surface loading rate로 나누어 Area를 계산할 수 있다. Effective Length, Width, Height는 하수도 시설기준(2011)의 중력식 침사기준에 따라 계산한다.
<중 략>
9. Activated sludge tank
A completely mixed activated sludge plant is to be designed for a new WWTP. A treatability study has been made using a pilot plant, and the following data have been obtained: influent BOD₅ = 125 mg/L, 30% of the influent BOD₅ is removed by primary clarification and grit chamber, MLSS = 2,000 mg/L, MLVSS = 75% of MLSS, and the biokinetics rates are shown at the following Table. An effluent quality of BOD₅ is 5mg/L.
참고 자료
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