Performance Evaluation of Electrocoagulation and Electrodewatering for the Reduction of Water Content in Wastewater Sludge

전기응집 및 탈수 시스템을 이용한 슬러지 함수율 저감 특성

  • 이재근 (부산대학교 기계공학부) ;
  • 김영환 (부산광역시 공업기술과) ;
  • 신희수 (부산대학교 기계공학과 대학원)
  • Published : 2001.09.01

Abstract

This study is to develop the pretreatment for the excess and digested sludge by elector-coagulation and dewatering. Electrocoagulation is applied to excess and digested sludge before transferring to the pistion type for dewatering. Piston type filter press as a laboratory scale plant was used to estimate the dewaterability. MMD of excess sludge was increased from initial diameter of particles ($34.16{\mu}m$) to the 87%($64.01{\mu}m$) after electrocoagulation. Al electrode is more effective than Fe electrode for the dewaterabiltity of excess sludge Electrodewatering after electrocoagulation as pretreatment makes the water content of sludge cake 50~60 wt%.

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