长江水源水质特点与混凝剂的选择研究

Characteristics of water quality of Yangtze River source and selection of coagulant

对比了长江水源和滦河水源的水质,对三氯化铁和聚合氯化铝的混凝过程进行了粒径分析。试验结果表明,长江水源的特点为低浊、低有机物,单独发挥PAC的电中和作用或FeCl3的卷扫网捕作用效果均较差。综合2种混凝剂的优势,采用先FeCl3后PAC的混合投加方式,能实现良好的混凝效果。

The water quality of Yangtze River and Luanhe River was compared,and particle size analysis of the coagulation process of ferric chloride and polyaluminium chloride was investigated.The results showed that the water source of Yangtze River had low turbidity and low organic matte,and the effect of electric neutralization of polyaluminium chloride alone or sweeping and aggregation of ferric chloride was poor.Considering the advantages of the two coagulants,the mixed dosage of ferric chloride and polyaluminium chloride could have good coagulation effect.