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首页> 外文会议>International Symposium on Energy and Electrochemical Processes for a Cleaner Environment, 2001, San Francisco, CA >COLOUR REMOVAL FROM SIMULATED DYE WASTE WATERS BY ELECTROCHEMICAL TREATMENT
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COLOUR REMOVAL FROM SIMULATED DYE WASTE WATERS BY ELECTROCHEMICAL TREATMENT

机译：通过电化学处理从模拟染料废水中去除颜色

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摘要

Dye wastewaters can be treated by biological, chemical and electrochemical methods. An electrochemical approach refers to the electrogeneration of metal hydroxides floes that adsorb dyes and produce decolourisation. The main objective of this paper was to assess the colour removal from simulated wastewaters containing direct (Direct Red 4A) and fibre reactive (Reactive Red M3A, Reactive Orange MG and Reactive Blue 4) dyes by aluminium based coagulant generated in an electrochemical cell with horizontal electrodes. Prior to water treatment experiments, the involvement of dyes in the development of electrode processes was pointed out by plotting polarization curves in various conditions. The extent of dyes involvement in electrode processes was not a decisive factor for the subsequent water treatment. The colour removal efficiency depended on dye nature (89% for direct red, about 70% for reactive orange and reactive red and 94% for reactive blue) and occurred mainly in the bulk of solution.
机译：染料废水可以通过生物，化学和电化学方法进行处理。电化学方法是指金属氢氧化物絮凝物的电生成，其吸附染料并产生脱色。本文的主要目的是评估水平方向的电化学电池中铝基混凝剂对模拟废水中含有直接染料（直接红4A）和纤维活性染料（活性红M3A，活性橙MG和活性蓝4）的脱色效果。电极。在水处理实验之前，通过绘制各种条件下的极化曲线指出了染料参与电极工艺的发展。染料参与电极工艺的程度不是随后水处理的决定性因素。脱色效率取决于染料的性质（直接红为89％，活性橙和活性红为约70％，活性蓝为94％），主要发生在大部分溶液中。

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