한국물환경학회지 (Journal of Korean Society on Water Environment)

  • 제20권4호
  • /
  • Pages.370-375
  • /
  • 2004
  • /
  • 2289-0971(pISSN)
  • /
  • 2289-098X(eISSN)
한국물환경학회 (Korean Society on Water Environment)
권호 표지

간헐포기 소화슬러지의 개량과 탈수 특성에 관한 비교 연구

A Comparative Study on the Conditioning and Dewaterability of Digested Sludge from Intermittent Aerobic Digestion

  • 김성홍 (조선대학교 토목공학과) ;
  • 최영균 (성균관대학교 토목환경공학과) ;
  • 정태학 (서울대학교 지구환경시스템공학부)
  • Kim, Seong Hong (Department of Civil Engineering, Chosun University) ;
  • Choi, Young Gyun (Department of Civil and Environmental Engineering, Sungkyunkwan University) ;
  • Chung, Tai Hak (Department of Civil, Urban and Geosystem Engineering, Seoul National University)
  • 투고 : 2004.05.11
  • 심사 : 2004.06.07
  • 발행 : 2004.07.30
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초록

Synthetic organic polyelectrolytes can be used to condition sludges to enhance their dewaterability. When conditioning biological sludges, the charge on the polymer has a significant impact on the effectiveness of the polymer as a conditioner. The objectives of this investigation were to determine the most effective type and dosage of polymer for conditioning digested sludge prior to dewatering, and to investigate the relationship between dewaterability and particle size. 3 types of digested sludge were used under the different digestion processes like anaerobic digestion, aerobic digestion and intermittent aerobic digestion. CST(capillary suction time), TTF(time-to-filter) and SRF(specific resistance to filtration) were tested as a dewaterability index and the number of particle distribution was analyzed using particle size analyzer. The results indicate that cationic polymer appears to be required for effective conditioning of these 3 types digested sludge and the optimal polymer dosage is about 0.6% of SS. CST and TTF are well correlated with mean particle diameter of which the dimension order is 1.7.

키워드

참고문헌

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