改性硅藻土在城市初期雨水处理中的应用

Modified diatomite application in urban initial rainwater process

以城市初期雨水末端治理为研究对象,采用以改性硅藻土作为主要净水材料的水体净化技术对入河初期雨水进行处理。结果表明:改性硅藻土对初期雨水中总磷的去除率高于80%,化学需氧量(COD)也达到70%以上,悬浮物颗粒(SS)去除率最高可达81.97%,同时,改性硅藻土对总氮和氨氮的去除率分别在30%和20%左右。

To deal with the urban rainwater,we apply the modified diatomaceous soil to purify the initial rainwater in the river.The results indicate that the TP removal rate of the modified diatomaceous soil is higher than 80%in the initial rainwater;the chemical oxygen density(COD)is higher than 70%;the removal rate of SS higher than 81.97%.In addition,the total nitrogen and ammonia nitrogen removal rate with modified diatomite are about 30%and 20%respectively.