不同填料曝气生物滤池对河水的净化效能

Purification Effect of Biological Aerated Filter Stuffed with Different Stuffing for River Water

以沸石、陶粒和火山岩曝气生物滤池为研究对象,研究了其对实际河水的净化效果。结果表明,水力停留时间和污染负荷对3种填料曝气生物滤池的净化效果均有影响,3种填料曝气生物滤池中,沸石和陶粒曝气生物滤池对氨氮的净化效果较好,且抗冲击能力较强;3种填料曝气生物滤池对CODC r的净化效果基本一致。沸石、陶粒和火山岩曝气生物滤池对实际河水中氨氮的平均去除率分别为75.24%,77.78%和33.59%,对CODC r的平均去除率都为50%左右。

The purification effect of biological aerated filter stuffed with zeolite,haydite and volcanic rock for river water was studied.The results showed that both HRT and pollution load could affect the performance of biological aerated filter with the three different stuffs.The biological aerated filters stuffed with zeolite and haydite had higher purification effect of NH4＋-N and stronger shock resistance ability than that with volcanic rock.The purification effect of the filter with the three stuffs on CODCr was basically consistent.The averaged removal rate of the biological aerated filter stuffed with zeolite,haydite and volcanic rock for NH4＋-N was 75.24%,77.78% and 33.59%,respectively,and that for CODCr was all about 50%.