瓷珠曝气生物滤池去除源水中氨氮研究

Study on Ammonia Nitrogen Removal from Source Water by Using Biological Aerated Filter with Porcelain Beads as Carrier

采用以瓷珠为填料的曝气生物滤池(BAF)预处理某高氨氮源水,结果表明,在气水比为1:1、滤速为5.5m/h、水温＞10℃的条件下,当进水氨氮＜5 mg/L时BAF对氨氮的去除率为70%～90%,反应器中存在一定的亚硝酸氮积累;反冲洗周期对氨氮的去除率有较大影响.

Biological aerated filter (BAF) with porcelain beads as carrier was used for pretreatment of the high ammonia nitrogen content source water. The result shows that under the air/water ratio of 1∶1, filter velocity of 5.5 m/h, water temperature higher than 10 ℃, and influent ammonia nitrogen less than 5 mg/L, the removal rate of ammonia nitrogen is 70%-90%, with some nitrite accumulated in the reactor. Backwash cycle has more effect on ammonia nitrogen removal rate.