摘要
我国印染行业现行退浆工艺能耗高,对环境污染严重,退浆废水的COD值要占整个印染废水的60%。目前,我国纺织行业大多采用PVA和淀粉混合浆,而PVA很难降解。采用PVA降解酶的退浆工艺虽然不能降低退浆液的COD值,但可以有效降解废水中的PVA,从而改善退浆废水的可生化性。开发商品化PVA降解酶及其退浆工艺,或推行氧化退浆工艺及无PVA的上浆工艺,将是今后的发展方向。
Conventional desizing processes are always concerned about high energy consumption and heaw environmental pollution, COD value of desizing effluent occupies 60% of dyeing effluents. The most popular size for textile industry is the mixture of starch and PVA, but PVA is very hard to be degraded. It was found that although PVA degrading enzyme could not effectively decrease the COD value of desizing liquor, it could effectively degrade PVA, therefore, biodegradability of desizing effluents was greatly improved. The developing trend in future is the commercialization of PVA degrading enzyme and its applied process, as well as populating oxidation desizing process and PVA-free sizing process.
出处
《印染》
北大核心
2009年第5期49-51,共3页
China Dyeing and Finishing
关键词
退浆
浆料
降解酶
织物
desizing
size
degrading enzyme
fabric
