摘要
研究了胶体颗粒的Zeta电位与污水浊度的关系,考察了污水pH值、混凝剂的种类及其复配对污水浊度的影响.结果表明:不同混凝剂对污水的降浊效果为三氯化铁(FeCl3)>聚合氯化铝(PAC)>硫酸铝(Al2(SO4)3),污水中胶体颗粒的Zeta电位与浊度呈负相关;混凝剂对污水的最佳降浊效果在pH值7～9;当添加硅藻土时,混凝剂对污水的降浊效果显著提高,但污水中胶体颗粒的Zeta电位与浊度不具有相关性.
The relationship between the Zeta potential of colloidal particles and sewage turbidity, and the effects of sewage pH values, types of coagulants, coagulant aids on the turbidity were investigated. The results show that the order of effect of coagulant on decreasing sewage turbidity is FeCl3〉 PAC〉 Al2（SO4）3; Zeta potential of colloidal particles in the sewage is negatively correlated to sewage turbidity;the best pH value of sewage coagulation turbidity-reduction condition is 7~9. By adding coagulant aids of diatomite, the effect of coagulation on sewage turbidity reduction is significantly improved. However, Zeta potential of colloidal particles in the sewage has no correlation with the sewage turbidity in the presence of coagulant aids.
出处
《上海工程技术大学学报》
CAS
2012年第4期294-297,共4页
Journal of Shanghai University of Engineering Science
基金
上海市教委科研创新资助项目(11ZZ176
12YZ153)
上海工程技术大学大学生创新活动计划资助项目(cx1204008)
关键词
胶体
混凝
ZETA电位
浊度
colloid
coagulation
Zeta potential
turbidity
