Journal of Korea Technical Association of The Pulp and Paper Industry (펄프종이기술)

Korea Technical Association of the Pulp and Paper Industry (한국펄프종이공학회)
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Studies on the Determination of Optimal Flocculation Condition in Wastewater of Recycled Paper

재생지 폐수의 최적 응집조건 결정에 관한 연구

  • 이성호 (강원대학교 산림과학대학 제지공학과) ;
  • 임택준 (강원대학교 산림과학대학 제지공학과) ;
  • 조준형 (강원대학교 산림과학대학 제지공학과)
  • Published : 2001.09.01
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Abstract

Sedimentation characteristics such as SS, $BOD_5$, COD removal efficiency of waste water in the toilet paper mill using milk carton were examined. Optimum dosage of coagulant, rapid mixing time and slow mixing time were determined by turbidity, SS, COD, $BOD_5$ and then equation for treatment efficiency was suggested. Mechanical strength of floc was determined by turbidity. For the coagulant, polyacrylamide (PAM) is more efficient for removing pollution than the aluminium sulfate. Effective mixing ratios of PAM and aluminum sulfate to remove pollution are 70:30 and 30:70. The lowest turbidity was showed when rapid mixing at 300 rpm after coagulant injection was applied. That which indicates the highest point of flocs mechanical strength.

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References

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