Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Characteristics of Color and COD Removal of Dyeing Wastewater Using Electrolytically Produced NaOCl Solution (I)

전기분해에 의해 제조된 NaOCl을 이용한 염색폐수의 처리 특성(I)

  • Published : 2005.10.01
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Abstract

This study was carried out to investigate the feasibility of using electrolytically generated NaOCl solution for treatment of wastewater containing an acid dye(C.I. Acid Red 114). The NaOCl was produced by the electrolysis of aqueous NaCl solution. In order to asses the treatment characteristics, we evaluated the effect of pH and mixing ratio of the NaOCl solution to colored wastewater on the color and chemical oxygen demand$(COD_{Mn})$ removal. The optimum conditions for the dye and $COD_{Mn}$ removal were determined to be pH 5.0 and mixing ratio of 1 :9, at which more than $88\%$ color and $87\%$ $COD_{Mn}$ were removed within 10 min reaction time. Reaction rate constants for the 300 and 500mg/l of artificially prepared dyeing wastewater were estimated as 0.1764 and $0.1737 min^{-1}$ for color removal and 0.1197 and $0.1436 min^{-1}$ for $COD_{Mn}$ removal, respectively.

Keywords

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