Journal of Forest and Environmental Science

Institute of Forest Science, kangwon National University (강원대학교 산림과학연구소)
권호 표지

Determination of Dosage of Flocculants for Paper Wastewater Treatment by Measuring Floc Strength

제지폐수의 플럭강도 측정에 따른 고분자응집제 주입량 결정

  • Cho, Jun-Hyung (Department of Paper Science and Engineering, College of Forest and Environmental Science, Kangwon National University) ;
  • Kang, Mee-Ran (Department of Paper Science and Engineering, College of Forest and Environmental Science, Kangwon National University)
  • 조준형 (강원대학교 산림환경과학대학 제지공학과) ;
  • 강미란 (강원대학교 산림환경과학대학 제지공학과)
  • Published : 2007.12.31
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Abstract

Actually, about 45% of total costs for wastewater treatment in a papermaking mill is spent for sludge disposal and the cost of chemicals used to improve the dewaterability of sludge takes much part of it. In order to reduce sludge disposal cost and to improve the efficiency of sludge treatment, it is necessary to minimize the amount of water contained within the sludge and hence to improve the dewaterability of the sludge. The objective of this study was to elucidate the way of improving the dewaterability of sludge. Three types of wastewater from a tissue paper mill, a printing paper mill and a newsprint mill were used and two types of high molecular weight flocculants (anionic PAM and cationic PAM) were used to treat the wastewater. Dewaterability of sludge was evaluated by measuring floc strength.

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