상하수도학회지 (Journal of Korean Society of Water and Wastewater)

  • 제22권5호
  • /
  • Pages.505-510
  • /
  • 2008
  • /
  • 1225-7672(pISSN)
  • /
  • 2287-822X(eISSN)
대한상하수도학회 (The Korean Society of Water and Wastewater)
권호 표지

볼-밀 가용화 효과의 향상을 위한 하수슬러지 조건에 대한 연구

Sewage sludge conditions for promoting solubilization in the ball mill treatment

  • 이명주 (경희대학교 환경응용화학대학 및 환경연구센터) ;
  • 김태형 (경희대학교 환경응용화학대학 및 환경연구센터) ;
  • 남양원 ((주)오에치케이) ;
  • 황선진 (경희대학교 환경응용화학대학 및 환경연구센터)
  • 투고 : 2008.08.11
  • 심사 : 2008.09.17
  • 발행 : 2008.10.15
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초록

Excess sludge and raw sludge were treated by ball mill in order to promote solubilization, and it was known that the level of solubilization was higher in excess sludge rather than raw sludge. About solid concentration, with the increase of TS, the amounts of solubilization was increased. And excess sludge was solubilized more effectively with the increase of ball mill treatment time. Especially, in case of excess sludge, within 5 min of ball mill treatment, 6 times of solubilization was achieved compared with raw sludge. The effect of bead size was also tested and 1 mm bead was most desirable when applied to the TS 4% of excess sludge. Particle size decrease by the ball mill treatment was more effective in raw sludge, nevertheless the level of solubilization was always higher in excess sludge. This means that the results of particle analysis could not be understood as a indicator for sludge solubilization. Generally, excess sludge and raw sludge are mixed at the thicker in the STP, but considering a ball mill pretreatment as an alternative for sludge solubilization, it is desirable to treat not raw sludge but excess sludge alone in the aspect of solubilization yield and economical process.

키워드

과제정보

연구 과제 주관 기관 : 서울지역환경기술개발센터

참고문헌

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