应用生物制剂修复黑臭河涌试验研究

应用固定化生物催化剂(IBC)对江门市某河涌进行生物修复。结果表明:向底泥投加IBC能增加底泥中有益微生物量,优化底泥微生物群落,使河涌底泥中有机质逐渐降解;同时能抑制硫酸盐还原菌(SRB)繁殖,降低底泥中硫化物含量。试验进行4个月后,底泥有机质去除率达到54.7%⁶3.7%,底泥中SRB数量减少了92.8%63.7%,底泥中SRB数量减少了92.8%⁹4.5%,底泥硫化物含量降低了81.9%94.5%,底泥硫化物含量降低了81.9%⁸7.5%,河涌黑臭现象基本消除;向上覆水体投加IBC,在IBC中微生物和多种酶的协同作用下,水中有机污染物被快速降解,上覆水体的COD和氨氮浓度逐渐下降,试验进行4个月时,去除率分别达到20.0%87.5%,河涌黑臭现象基本消除;向上覆水体投加IBC,在IBC中微生物和多种酶的协同作用下,水中有机污染物被快速降解,上覆水体的COD和氨氮浓度逐渐下降,试验进行4个月时,去除率分别达到20.0%³5.2%和32.9%35.2%和32.9%⁴4.1%,提高了河涌的生物自净能力。

Study on Bioremediation of Black-odor River with Biological Preparations

In situ experiments were conducted in a river of Jiangmen City for controlling the black-odour pollution by using Immobilized Biological Catalyst（IBC）. The results showed that： IBC increased the amount of friendly microbes, optimized the microbial community system of sediment, so that the organic matter, Sulfate Reducing Bacteria（SRB）and sulfide in sediment were reduced by the function of bacteria directly. After 4 months, the removal rates were up to 54.7%～63.7% , 92.8%～94.5% and 81.9%～87.5%, respectively, and the black-odour pollution was eliminated basically. The removal rate of COD and ammonia-nitrogen were up to 20.0%～35.2% and 32.9%～44.1%, respectively, attributed to the function of microorganism and enzymes of IBC, which helped the degradation of organic pollutants. As a result, it could improve the self cleaning capacity of the river.