新型絮凝剂巯基乙酰壳聚糖除浊性能研究  

Study on the Removing Turbidity Performance of New Flocculant Mercapto-acetyl Chitosan

作　　者：张翠玲[1] 张明月[1] 常青[1] 周厚英[1] 石含雄[1] 

机构地区：[1]兰州交通大学环境与市政工程学院,甘肃兰州730070

出　　处：《兰州交通大学学报》2011年第4期116-119,共4页Journal of Lanzhou Jiaotong University

基　　金：国家自然科学基金(31060060);兰州市科技计划项目(No.2008-1-175)

摘　　要：为进一步研究巯基乙酰壳聚糖的絮凝性能,以蒸馏水为分散介质配制的高岭土悬浊液为模拟水样,通过实验室烧杯实验,系统研究该材料的实际絮凝性能,考察絮凝剂投加量和实际絮凝效果与原水pH值、浊度及共存重金属离子的对应关系.实验结果表明:该絮凝剂对浊度有一定的去除效果;在合适的投药量范围内浊度的去除率受原水pH值及初始浊度的影响不大;重金属离子的存在可以大大促进该絮凝剂对浊度的去除,浊度的最高去除率可达100%.For further study the flocculation properties of Mercapto-acetyl Chitosan, we have investigated the flocculation properties using Kaolin suspension prepared with the distilled water as the dispersion medium by beaker experiments. The effects of the pH value,original turbidities and coexisting heavy metal ions of the untreated water on the dose and the flocculating properties have been discussed in detail. It is found that the flocculant has some ability of turbidity removal,and in a suitable dosage range,the pH value and the turbidity of raw water have little effect on turbidity removal efficiency. It is shown that the presence of heavy metal ions can greatly promote the turbidity removal of the flocculant. The maximum removal rate of turbidity is up to 100% in the coexisting system for heavy metal ions and turbidity.

关 键 词：高分子絮凝剂 浊度 重金属 

分 类 号：X703[环境科学与工程—环境工程]