Study on the Membrane Cleaning-in-place (CIP) Conditions for the Dye Wastewater Treatment Process Using Polyamide Composite Membranes

폴리아마이드계 복합막을 이용한 염료 폐수 처리 공정 분리막 세척 조건 연구

  • JeGal, Jong-Geon (Division of New Chemistry, Korea Research Institute of Chemical Technology) ;
  • Lee, Yong-Hwan (Department of Fiber and Polymer Engineering, Hanyang University) ;
  • Hwang, Jeong-Eun (Division of New Chemistry, Korea Research Institute of Chemical Technology) ;
  • Jaung, Jae-Yun (Department of Fiber and Polymer Engineering, Hanyang University)
  • 제갈종건 (한국화학연구원 신화학연구단) ;
  • 이용환 (한양대학교 응용화공생명공학부) ;
  • 황정은 (한국화학연구원 신화학연구단) ;
  • 정재윤 (한양대학교 응용화공생명공학부)
  • Published : 2008.03.30

Abstract

For the treatment of the dye wastewater, a polyamide nano-composite membrane and reverse osmosis (RO) membranes were prepared using interfacial polymerization technique, in which piperazine, meta-phenylene diamine, and trimesoyl chloride were used as monomers, Their permselective properties were characterized with aqueous solutions of PEG 600, $Na_2SO_4$, and NaCl, and their performance was compared with that of Osmonics Co, They were found to be a typical nano-composite membrane and a low pressure RO membrane. Using them, a real dye wastewater supplied from the Kyungin Corporation, one of the domestic dye producer, was treated, studying the separation performances of the membranes, Also, during the wastewater treatment, cleaning in place (CIP) of the membranes was carried out regularly to recover the flux of the membranes. Three different chemical cleaners were employed for the CIP process and their performance were compared in this study.

염색폐수처리를 위하여 피페라진, 메타페닐렌디아미, 트리메소일 클로라이드를 이용하여 계면중합법으로 폴리아마이드계 나노분리막과 폴리아마이드계 역삼투막을 제조하였으며, 이들을 오스모닉스사로부터 구입한 역삼투막의 투과특성과 비교하였다. 이들의 기본 분리투과특성 조사를 위하여 PEG 600, $Na_2SO_4$, NaCl 수용액을 이용하였으며, 제조된 분리막들은 전형적인 나노복합막과 저압용 역삼투막의 특성을 나타내었다. 제조된 이들 분리막들을 이용하여 국내 염료 제조업체인 (주)경인양행으로부터 공급된 실제 염색폐수를 처리하였으며, 이때 이들의 분리투과특성을 살펴보았다. 또한 분리막을 이용한 폐수처리 시 발생되는 분리막 오염을 제거하기 위하여 일정시간마다 CIP를 실시하였다. 이때 3종류의 서로 다른 화학세정제를 사용하였으며, 이들의 세척성능을 살펴보았다.

Keywords

References

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