一种多功能水处理剂研究  

Study on a kind of multifunctional water treatment agent

作　　者：沈萍 吴秋霞[1] 王小平[2] 沈晨洁 寿倩影 郑怀礼[2] 

机构地区：[1]嘉善海峡净水灵化工有限公司,浙江嘉善314100 [2]重庆大学重庆市水处理混凝剂工程技术研究中心,重庆400045

出　　处：《土木建筑与环境工程》2016年第S1期209-212,共4页Journal of Civil,Architectural & Environment Engineering

基　　金：浙江省省级新产品(2015D60SA460355)

摘　　要：原水pH偏高导致饮用水残留铝超标,原水浊度偏低导致混凝效果欠佳是许多水厂制水的两大难题,例如江浙沪一带用湖水、水库水为原水的一些水厂。论文介绍了一种以聚氯化铝生产过程中产生的滤渣及盐酸为主要原料,通过在常温常压下反应制备一种新型多功能水处理剂产品。研究了盐酸与滤渣比例对本产品pH值及有效含量的影响;多功能水处理剂投加后对低浊水的助凝效果;对降低混凝剂PAC投加量的影响;对降低水体pH的影响。结果表明:滤渣∶盐酸=1∶0.4~1.0均可(盐酸质量分数为7.75%),根据水厂原水的pH及碱度进行选择,当滤渣∶盐酸=1∶0.4时,此最为适宜工业化生产及应用,具有较好的助凝效果,降低原水pH易于控制,对解决饮用水中铝超标难题起到了重要作用。Excess of residual aluminum in drinking water caused by high pH of original water and poor coagulation treatment effect caused by low turbidity of original water are the two major problems of many water treatment plants.For example,some water treatment plants that use lake and reservoir water as the original water in Jiangsu Zhejiang Shanghai areas.In this paper,a novel multifunctional water treatment agent product produced at normal temperature and atmospheric pressure and using filter residue produced in the production process of poly aluminum chloride as the raw material had been introduced.The effect of hydrochloric acid and filter residue ratio on the pH value and effective content of the product was studied.Furthermore,the coagulation effect2 of this multifunctional water treatment agent in low turbidity wastewater treatment and the effect of reducing the dosage of coagulant PAC and water pH had also been studied.Results indicated that,the applicable proportion of filter residue and hydrochloric acid was 1∶0.4to1:1.0(hydrochloric acid mass fraction was 7.75%).Operating conditions were selected according to the pH and alkalinity of the raw water of water treatment plants,and the most suitable operating condition for industrial production and application was filter residue:hydrochloric acid =1∶0.4,and in this case,it showed a better coagulation effect and easy contral of reducing raw water pH.Furthermore,it has played an important role in solving the problem of excessive aluminum in drinking water.

关 键 词：聚氯化铝 混凝剂 助凝剂 滤渣 浊度添加剂 

分 类 号：TU991.2[建筑科学—市政工程]