饮用水预臭氧化工艺对氨氮的影响

Influence of Preozonation Process on Ammonia Nitrogen in Drinking Water Treatment

臭氧作为一种强氧化剂,在饮用水预臭氧化工艺中对水中的有机氮有氧化作用,可导致NH4+-N浓度升高。分别采用曝气和投加高浓度臭氧水的方法投加臭氧,通过回归分析获得了NH4+-N浓度与臭氧投加量的线性关系以及NH4+-N变化的限值,并对两种臭氧投加方法的效果进行了比较。

Ozone is a strong oxidant and can oxidate the organic nitrogen in preozonation process for drinking water treatment, which will result in the rising of NH4^＋-N concentration. Ozone was added by means of aeration and addition of water with high concentration ozone. Through the regression analysis, the linear relationship of NH4^＋-N concentration with ozone dosage and the maximum change of NH4^＋-N were obtained, and then comparison was made on the result of the two ozone addition methods.