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首页> 外文会议>Water and environment technology conference 2017 >Development of Environment Friendly Treatment and Reuse Technology for Cellulosic Dyeing Wastewater
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Development of Environment Friendly Treatment and Reuse Technology for Cellulosic Dyeing Wastewater

机译：纤维素印染废水环保处理与回用技术的发展

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The current investigations were carried out on the spent washing-off liquor generated during cellulosic dyeing of knit fabrics using fibre reactive dyes. The treated wastewater was also evaluated to check its suitability for repeated reuse after oxidation treatment with Ozone gas (03). The experimental results showed that an Ozone dose of 2000 mg/h for 30 minutes could be applied to remove dye and chemical oxygen demand (COD) without compromising dyeing characteristics. A decrease in pH was also observed during 03 applications due to the formation of acidic by-products. Based on the colour reproduction data (AL*, AC*, AH* and AE*) of three selected dyes; C.I. Reactive Orange 13, C.I. Reactive Red 269, and C.I. Reactive Blue 263, it has been found that washing baths of all dyes can be reused 2 to 3 times with negligible colour differences. Colour fastness properties of all samples under investigation were found to be similar (4 to 4.50) to those of control samples. Because the new method under investigation did not use any fresh water in rinsing process and hence it proved to be very green and environmentally friendly process.
机译：目前的研究是对使用纤维活性染料对针织织物进行纤维素染色时产生的废洗液进行的。还对处理后的废水进行了评估，以检查其在用臭氧气体（03）进行氧化处理后是否可重复使用。实验结果表明，在不影响染色性能的情况下，可以采用2000 mg / h的臭氧剂量处理30分钟，以去除染料和化学需氧量（COD）。由于酸性副产物的形成，在03施用期间还观察到pH降低。基于三种所选染料的色彩还原数据（AL *，AC *，AH *和AE *）； C.I.活性橙13，C.I.活性红269和C.I.活性蓝263，已发现所有染料的洗涤液可重复使用2至3次，色差可忽略不计。发现所有研究样品的色牢度特性与对照样品相似（4至4.50）。由于正在研究的新方法在冲洗过程中没有使用任何淡水，因此被证明是非常绿色和环保的过程。

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