壳聚糖絮凝有机废水机理的研究  

Study of the mechanism of chitosan flocculating organic wastewater

作　　者：王志华[1] 王书俊[1] 黄毓礼[1] 

机构地区：[1]北京化工大学可控化学反应科学与技术基础教育部,北京100029

出　　处：《工业水处理》2002年第2期28-29,共2页Industrial Water Treatment

摘　　要：研究了壳聚糖絮凝处理高浓度含铜离子有机废水 ,合适 pH值为 5 .5～ 6 .5 ,壳聚糖的最佳用量与废水的化学需氧量及浊度有关 ,絮凝效果与搅拌时间无关 ,壳聚糖明显优于无机絮凝剂Al2 (SO4 ) 3,同时能螯合去除大量有毒重金属铜离子。Chitosan,a flocculant,is used to treat organic wastewater containing Cu 2+ , COD 1×10 5 mg/L and turbidity 500～1 000 mg/L. The range of suitable pH is from 5.5 to 6.5. The amount of chitosan varies with COD and the turbidity of liquid waste. The results of decreasing turbidity and Cu 2+ are satisfactory. The mechanism of chitosan flocculating organic wastewater is electrostatic gravitational force and chitosan is a positive ionic flocculating agent.

关 键 词：壳聚糖 有机废水 絮凝剂 废水处理 

分 类 号：X783[环境科学与工程—环境工程]