Journal of Forest and Environmental Science

Institute of Forest Science, kangwon National University (강원대학교 산림과학연구소)
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Simple Determination Method on Optimal Dosage of Polymer for Papermaking Wastewater Treatment

제지폐수처리의 고분자 응집제 주입량 간이 결정법

  • Cho, Jun-Hyung (Department of Paper Science & Engineering, College of Forest and Environmental Science, Kangwon National University) ;
  • Kang, Mee-Ran (Korea Forest Research Institute) ;
  • Jin, Hai-Lan (Key Laboratory of Bio-Based Material Science and Technology of Ministry of Education, Northeast Forestry University)
  • 조준형 (강원대학교 산림환경과학대학 제지공학과) ;
  • 강미란 (국립산림과학원) ;
  • 김해난 (동북임업대학생물질재과학학여기출교육부중점실험실)
  • Received : 2014.02.06
  • Accepted : 2014.02.10
  • Published : 2014.02.28
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Abstract

Dewaterability, one of the important properties of wastewater sludge, was investigated using a simple capillary suction time (CST) measurement method. CST and SRF have a very close co-relation. It was convinced that CST method was quite effective, and compensating the time-consuming SRF of conventional drainage measuring method. It turned out that one could use the results of CST to find optimum flocculants ratio to improve drainage in wastewater treatment for the tissue paper production at a mill. Since the optimum ratio of flocculants could be determined with the value of CST and COD removal efficiency could be improved with precise ratio of flocculants. Thus, using CST for determining the optimum ratio of flocculants could be economical by reducing the amount of flocculants. Dewaterability might be measured within several seconds using the values of CST in a precise way. The dewaterability could also be useful in investigating the optimum ratio of flocculants.

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References

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