[환경공학] 문제풀이 설계 (영문)
- 최초 등록일
- 2009.08.31
- 최종 저작일
- 2009.08
- 6페이지/ 한컴오피스
- 가격 2,000원
소개글
[환경공학] 문제풀이 설계 (영문) 입니다.
목차
1. A wastewater is to be treated in a continuous-flow stirred-tank reactor. Assuming that the reaction is irreversible and first-order (r = kC) with a reaction rate coefficient equal to 0.15 d-1, determine the flowrate that can be treated if the reactor has a volume of 20 m3 and 98 percent treatment efficiency is required. What volume would be required to treat the flowrate determined above if the required treatment efficiency is 92 percent?
2. Design a complete-mix activated sludge process with recycle to treat an industrial wastewater with one of the following characteristics (to be selected by instructor) at peak month conditions.
3. An influent wastewater sample is evaluated in a laboratory respirometer test to determine its readily biodegradable COD (rbCOD) concentration....
본문내용
Finally, the oxygen consumption rate declines dramatically again and continues at a relatively constant rate (Phase C). The respirometer data is summarized in the following table for three different samples (to be selected by instructor). For the selected sample determine the rbCOD concentration of the wastewater in mg/L, assuming the biomass yield for the heterotropic bacteria is 0.4gVSS/g COD and the oxygen equivalent of the biomass is 1.42 g COD/g VSS.
The Oxygen used for rbCOD Oxidation = 0.432 g Oxygen/g rbCOD
Sample의 부피: 500ml
A: 64/(1-0.568)X(1000/500)=296.29mg
rbCOD = 592.59mg/L
B:740.74mg/L
C:537mg/L
유량이 일정하고 전화율이 92%이기 위한 반응기의 부피
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