Journal of the Korean Society of Industry Convergence (한국산업융합학회 논문집)

The Korean Society of Industry Convergence (한국산업융합학회)
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Treatment of Dye-Processing Wastewater with Complex Chemical Coagulants

복합응집제를 이용한 염색가공 폐수의 처리

  • Seo, Myung-Po (Div. of Chemical Industry, Yeungnam College of Science & Technology) ;
  • Kim, Byung-So (Div. of Chemical Industry, Yeungnam College of Science & Technology)
  • 서명포 (영남이공대학 화장품.화공계열) ;
  • 김병소 (영남이공대학 화장품.화공계열)
  • Received : 2005.11.15
  • Accepted : 2006.03.20
  • Published : 2006.05.31
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Abstract

This study provides the optimal conditions treating with the coagulation process and the other chemical treatment processes for dyeing wastewater, especially various dyeing complex wastewater. The results are shown as follows: 1. Optimum reaction condition of pH for ferrous sulfate was the range of 9 to 12. And when 3,000ppm(mg/l) of ferrous sulfate was dosed, the maximum $COD_{Mn}$ removal rate was approximately 40%. 2. In case of ferrous chloride and Bittern as coagulants, optimum pH range was 10 to 11. And maximum $COD_{Mn}$ removal rate was approximately 46% to 50% for dose of 2,000ppm(mg/l) to 6,000 ppm. 3. It is confirmed that the activated sludge process following coagulation precipitation method provides better treatment efficiency than the coagulation precipitation method following the activated sludge process. 4. The purpose of this study was to produce CGF (Cyanoguanidineformaldehyde resin) by organic compounds. 5. The complex coagulation agent by this study is the most economical coagulant with Alum(aluminum sulfate) and the removal efficiency is approximately 54% with 1,000ppm(mg/l) of pH range 6 to 7.

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