퇴비화를 이용한 하수슬러지 처리에 있어서 적정 수분함량과 C/N비에 관한 연구

• 영문명: A Study on Optimum Moisture Content and C/N ratio of Sewage Sludge Treatment Using Composting
• 발행기관: 한국환경보건학회
• 저자명: 손현석 양원호 정문식
• 간행물 정보: 『한국환경보건학회지』제23권 제2호, 44~56쪽, 전체 13쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 1997.06.30

영문 초록

When sewage sludge is treated by cornposting, higher moisture content and lower C/N ratio on sewage sludge is problems. This paper project to alesolve two problems. The almost trends in run 3 of MC 70% are similar to these in run 1 and 4 of MC 65%. A retention time of the highest temperature (>50$\circ$C) and increase rate of temperature in run 3 are an affinity to these in run 4. Particularly, decrease rate of temperature in run 3 is slower than others and this data shows the more activity of thermal microbial in run 3 than that in others. C/N ratio trends in run 3 shows slow reaction in initial stage but, after 9 days, is similar to that in run 1 and 4. Carbon trends in each run are a similarity to C/N ratio trends. Temperature, MC, carbon and C/N ratio trends in run 5, whose C/N ratio is 15, show less microbial activity than that in run 6, whose C/N ratio is 20. But temperature increase of the beginning stage and pH of the final stage in run 5 are greater than that in run 6. Final MC and carbon content in run 5 and 6 have a similar values. That is, final MC in run 5 and 6 is 49.39% and 48.97% and final carbon content in each run is 25.15% and 22.20%. Expecially, a temperature increase and C/N ratio decrease rate of the beginning stage in run 5 are greater than these in run 6. This shows the shorter lag time in run 5 than lag time in run 6.

키워드

Composter Moisture content C/N ratio Lag Time Carbon content