【摘要】 为了提高成品革质量,消除废液中石灰和S2-的污染,用酶制剂和浸灰助剂代替石灰分散皮胶原纤维。用1%~2%石灰加工的猪皮蓝湿革质量优于常规灰碱法生产的,浸灰结束时加入0.6%~1.2%H2O2处理30 min,废液中硫离子含量降低70%~100%。该技术减少石灰用量80%,基本实现S2-和石灰零排放,工艺操作简便、易控制,不需更改或添加设备,克服了废液循环使用操作烦琐、管理困难的不足。研究结果表明,实施少灰和无S2-排放脱毛浸灰完全可行,使灰碱法脱毛浸灰制革实现了清洁化生产。更多还原

【Abstract】 To solve the pollution of lime and S^2- from lime-sulfide unhairing liquor and improve the quality of leather,alkaline enzyme and lime auxiliary agent were used for liming of pigskin in place of lime.The properties of the wet blue leathers of pigskin obtained with 1%-2% lime were better than those of the leather by conventional liming.This ensures reduction of lime use above 80% for this unit operation.The amount of S^2- in waste liming effluent was decreased by 70%-100% due to drum lime treated with 0.6%-1.2% H₂O₂ for 30 min as the end of liming.All the results showed that this cleaner liming process was feasible.更多还原