酶助浸水、脱毛工艺的环境友好性研究(1)——基于废液沉淀处理特性的评价

Eco-friendly Enzymatic Soaking and Unhairing Processes(1):evaluation settling property of wastewater

以传统化学浸水、脱毛工艺为对照,以沉淀速度、污泥体积、污染物(悬浮固形物SS、总固形物TS、BOD5和COD)去除率和沉淀效率为指标,对酶助浸水、脱毛工艺废液(ESU废液)的沉淀处理特性进行了研究。结果表明:ESU废液比传统浸水、脱毛工艺废液,具有更好的沉淀处理性。在较少絮凝剂用量条件下,ESU废液沉淀迅速,沉淀后污泥体积率小,同时具有更高的污染物去除率和沉淀效率。因此,从沉淀处理特性看,制革准备工段采用酶助浸水、脱毛工艺,比传统的化学浸水、脱毛工艺具有更好的环境友好性。

The chemical sedimentation of ESU wastewater were discussed in comparison with traditional soaking and unhairing processes, taking settling velocity, sludge vol. , pollutant removal value. , and settling effects as targets. The results show that ESU wastewater has better treatability than traditional wastewater in settling velocity, pollutant removal and sludge volume. Eco friendly processes are enzymatic soaking and unhairing processes.