悬浮填料流化池预处理去除珠江水中的氨氮

Study on Pre-treatment Removal of Ammonia Nitrogen from Pearl River Raw Water by Using Suspended Carrier Fluidized Tank

采用悬浮填料流化池去除珠江源水中的氨氮,分析了在自然挂膜条件下,原水氨氮浓度、水温、气水比、停留时间、有机物浓度对氨氮去除效果的影响。结果表明:在气水比为1∶1、停留时间为2h、填充率为50%的条件下,流化池对氨氮的去除率达80%～91%;氨氮填料表面负荷随温度的升高以指数的方式增加;在水温相同时,随着原水CODMn浓度的升高,对NH4+-N的去除率呈下降趋势。

The suspended carrier fluidized tank was used to remove ammonia nitrogen from Pearl River source water, and an analysis was made on the impact of ammonia nitrogen concentration in raw water, water temperature, air/water ratio, retention time and organic matter concentration on the removal effect of ammonia nitrogen under natural startup. The results show that when the air/water ratio is 1 ： 1, the retention time is 2 h, and the packing rate is 50% , the removal rate of ammonia nitrogen achieves 80% to 91%. The carrier surface load increases in exponential form with temperature rise. At the same water temperature, NH4^＋ - N removal rate decreases with increase of CODM, concentration in the raw water.