丝光废碱液净化处理工艺研究
Study on process for purifying mercerizing lye
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摘要: 为了循环利用牛仔布丝光加工工艺过程产生的废碱液，实验采用臭氧、双氧水以及二氧化锰为净化脱色剂对废碱液进行了脱色净化的研究，结果表明选用的3种脱色剂均有效果，以臭氧效果最佳。因此，重点探讨了臭氧的净化脱色工艺及条件，对于碱浓度为80 g/L的丝光废碱液，当臭氧曝气量为0.25 m3/h、接触反应时间为4 h时，脱色率可达到99.3％，经臭氧净化的废碱液能在牛仔布丝光工艺中循环使用。Abstract: In order to reuse the spent lye came from the process of mercerized denim,the ozone, hydrogen peroxide and manganese dioxide as decolourants of purifying mercerizing lye were researched in this experiment.The experimental results showed that the three kinds of decolorants had effect, but ozone was the best. Therefore the experiment focused on the arts and conditions of depurating the spent lye by ozone. It was turned out that decoloration rate was upto 99.3% when the spent lye treated with ozone under the conditions that the lye concentration was 80 g/L, the quantity of air flow was 0.25 m3/h and the reaction time was 4 h. It is demonstrated that the spent lye can be recycled into the process of mercerized denim after purification by ozone.
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Key words:
- denim /
- mercerizing lye /
- ozone /
- decolor purify /
- decoloration rate
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