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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Generation of Hazardous Gas and Corrosion Originated from Anaerobic Digestion of Process Water in OCC Recycling Mill

골판지 재활용 공정수의 혐기성 분해에 따른 유해 기체의 생성과 부식

  • Park, Dae-Sik (Pulp and Paper Research Center (PPRC), Korea Research Institute of Chemical Technology (KRICT)) ;
  • Ryu, Jeong-Yong (Pulp and Paper Research Center (PPRC), Korea Research Institute of Chemical Technology (KRICT)) ;
  • Song, Bong-Keun (Pulp and Paper Research Center (PPRC), Korea Research Institute of Chemical Technology (KRICT)) ;
  • Seo, Yung-Bum (Department of Forest Products, Chungnam University) ;
  • Sung, Yong-Joo (Korea Tomorrow and Global)
  • 박대식 (한국화학연구원 펄프제지연구센터) ;
  • 류정용 (한국화학연구원 펄프제지연구센터) ;
  • 송봉근 (한국화학연구원 펄프제지연구센터) ;
  • 서영범 (충남대학교 임산공학과) ;
  • 성용주 (한국담배인삼공사)
  • Published : 2005.09.30
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Abstract

There are accumulations of remained chemical additives and contaminants in the process water of semi-closed linerboard mill. High temperature of the process water aggravates the anaerobic digestion of contaminated process water and causes the generation of hazardous gases, which are from the biological reaction of varied additives and contaminants. The hydrogen sulfide in the gases easily combine with moisture in the air, and become sulfuric acid, which causes corrosion of paper machinery. This hydrogen sulfide is from the reduction of sulfate ions in the process water, and the sulfate ions are mostly from the alum. We changed the alum to PAC (Poly Aluminum Chloride). The results were preventing generation of hydrogen sulfide, and equivalent sizing effect by the use of PAC.

Keywords

References

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