利用生物曝气滤池修复受污染水源

利用生物曝气滤池(BAF)对微污染水源水去除氨氮及有机物进行了试验研究。试验表明，在进水氨氮为6mg／L左右时，BAF可在8m／h的滤速下运行，氨氮去除率大于88％；在氨氮进水为2mg／L时，BAF可在16m／h的滤速下运行，氨氮去除率大于84％。BAF对水中的三氯甲烷前体物去除率较低(16％)，对AOC的去除率为58％。BAF中载体上的生物膜主要聚集在表面的凹陷和孔洞处，不能完全覆盖载体表面。

Study on biological aerated filter as bioremediation process of micropolluted source water

Biological aerated filter (BAF) as bioremediation process of micropolluted source water to remove ammonia and organic matter was studied. The result showed that, under the conditions of influent ammonia concerntration which was about 6 mg/L, the filtration velocity was 8 m/h, the ammonia removal rate was higher than 88%. When the influent ammonia concerntration was about 2 mg/L, and the filtration velocity was 16 m/h, the ammonia removal rate was higher than 84%. The TCMsFP and AOC removal rate were 16% and 58% respectively. BAF could improve biostabilization of water. The biofilm conglomerated at the hollow of carrier surface, and not bestrewed the surface overall.