Journal of Korean Society of Water and Wastewater (상하수도학회지)

The Korean Society of Water and Wastewater (대한상하수도학회)
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Improvement of dewaterability and settleability of sewage sludge using coagulation sludge

응집슬러지를 이용한 하수슬러지의 탈수성 및 침강성 개선

  • So, Soo-Hyun (Center for Water Resource Cycle, Korea Institute of Science and Technology) ;
  • Lee, Byung-Ha (KG Chemical Co. Ltd.) ;
  • Park, Joon-Hong (School of Civil and Environmental Engineering, Yonsei University) ;
  • Cha, Ho-Young (Zignentech Co. Ltd.) ;
  • Kim, Han-Soo (School of Environmental Engineering, University of Seoul) ;
  • Song, Kyung-Guen (Center for Water Resource Cycle, Korea Institute of Science and Technology)
  • 소수현 (한국과학기술연구원 물자원순환연구단) ;
  • 이병하 (KG 케미컬(주)) ;
  • 박준홍 (연세대학교 사회환경시스템공학부) ;
  • 차호영 (자인엔텍(주)) ;
  • 김한수 (서울시립대학교 환경공학부) ;
  • 송경근 (한국과학기술연구원 물자원순환연구단)
  • Received : 2018.02.13
  • Accepted : 2018.03.12
  • Published : 2018.04.16
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Abstract

This study aimed to investigate the feasibility of improving dewaterability and settleability of sewage sludge using coagulation sludge. When mixed with sewage sludge and coagulation sludge at 1:1 ratio, capillary suction time(CST) and specific resistance to filtration(SRF) decreased by about 56% and 68%, respectively. It is found that total solids(TS) and volatile solids(VS) of mixing sludge are increased by about 59% and 53%, respectively. Also, the turbidity of the mixing sludge supernatant was reduced from 99 to 16 NTU. It is observed that the mixing of sewage sludge and coagulation sludge at 1:1 showed better effect than using poly-aluminum chloride(PAC) coagulant at 25 mg/L.

Keywords

References

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