生物膜技术原位处理有机污染河道研究

Study on Treating Organic Polluted River by Bio-film Technology in Situ

将生物膜技术移植到有机污染河道治理中,采用三种生物填料,与目前最常用的空曝气技术对比净化有机污染河道的效果。结果表明:污染河道底泥具有较强的生物活性,可以用作净化污染河道的作用主体。挂膜过程中四组反应器对有机物、氨氮的降解速率相当;挂膜过程结束后,三组生物膜反应器中的水质净化效率高于空曝气反应器。通过对底泥中有机成分的对比分析,发现经过9 d连续运行后,四组反应器底泥中的有机质含量分别由最初的12.21%降低至9.42%、7.24%、6.97%和7.52%,表明生物膜技术在净化污染水体的同时,对污染底泥中的有机物也具有更为有效的降解效果。

Bio-film technology used to treat organics polluted river was studied. Three types of bio-carriers were applied to treat polluted river water and sediment, and experimental result proved that original bacteria in river sediment have strong microorganism activity. Under aeration condition, original bacteria could attached to bio-carries in a short period. After that, bio-carries reactors have higher treatment efficiencies compared to the control reactor, and organic content in control reactor decreased from 12.21% to 9.42 % in 9 days, whereas, it reduced to 7.24 %, 6.97 % and 7.52 % respectively in three bio-~film reactors, and experiment result proved that bio-film technology has an excellent treatment efficiency in treating organics polluted river water and sediment.