| STUDY ON TREATING ALKALI EXTRACTION-STAGE EFFLUENT FOR COLOR REMOVAL BY MICRO-ELECTROLYSIS METHOD |
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| 作者姓名： | Xianying Xiao Zhonghao ChenYuancai Chen Paper Making & Pollution Control Engineering Research Center South China University of Technology Guangzhou |
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| 作者单位： | Xianying Xiao Zhonghao ChenYuancai Chen Paper Making & Pollution Control Engineering Research Center，South China University of Technology，Guangzhou，510640 |
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| 摘 要： | INTRODUCTIONPulping and papermaking wastewaters have presented a formidable waste treatment problem for many years. Various effluents from kraft pulp and paper factories have the potential to color the receiving waters. Bleaching wastewater supplies most of the total color loading, with the caustic extraction stage being responsible for 70~75% of it 1,2]. Color interferes with aquatic life by limiting light transmittance. Color also contributes to taste problems and increases stability o…
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STUDY ON TREATING ALKALI EXTRACTION -STAGE EFFLUENT FOR COLOR REMOVAL BY MICRO-ELECTROLYSIS METHOD |
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| Xianying Xiao Zhonghao ChenYuancai Chen Paper Making & Pollution Control Engineering Research Center,South China University of Technology,Guangzhou,.STUDY ON TREATING ALKALI EXTRACTION-STAGE EFFLUENT FOR COLOR REMOVAL BY MICRO-ELECTROLYSIS METHOD[J].Journal of Tianjin University of Science & Technology,2004,19(Z2). |
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| Authors: | Xianying Xiao Zhonghao Chen Yuancai Chen |
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| Institution: | Paper Making & Pollution Control Engineering Research Center, South China University of Technology, Guangzhou, 510640 |
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| Abstract: | The micro-electrolysis technology was applied in the decolorizing treatment of bleaching E-stage effluent and the influencing factors were discussed in this paper. The initial pH and the retention time were main factors influencing the color removal rate, in addition, adding air and enough pH for neutralization were necessary for the treatment. The test showed that the decolorizing result was efficient by micro-electrolysis treatment when adding air, initial pH was 3, 20 minutes of reaction time, the final pH 10 for neutralization. The color removal rate was up to 90%. The chance of ultraviolet absorption spectrum also demonstrated the mechanism of color removal in the wastewater treatment. |
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| Keywords: | bleach plant effluents alkali extraction stage effluent decolorization micro-electrolysis technology |
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