硅藻土对废水中氨氮的吸附影响因素研究

Influences of the Adsorption of Diatomite to Ammonia in Wastewater

利用硅藻土对氨氮废水的吸附进行实验研究,分别考察了硅藻土投加量、搅拌反应时间、静置时间、pH和沸石投加量对氨氮去除率的影响。试验结果表明,采用硅藻土处理氨氮废水的最佳运行条件为:硅藻土的投加量为0.8 g/L,pH为7.0左右,搅拌反应时间为15.0 min,静置时间为15.0 min,以及沸石的投加量为3.0 g/L。而且,当硅藻土投加量大于0.8 g/L时,氨氮去除率可以达到85%以上。

The absorption efficiency of ammonia in the wastewater by diatomite were studied,and the effects of mixing time,settling time,pH,dosage of diatomite and modifier zeolite were investigated.Results indicated that the optimum operation indexes were mixing time of 15.0 min,settling time of 15.0 min,pH of 7.0,diatomite dosage of 0.8 g/L and modifier zeolite dosage of 3.0 g/L.Moreover,the remove rate of ammonia could reached over 85% under diatomite dosage of more than 0.8 g/L.