作　　者： ; ; ; ; ; ;

机构地区： 暨南大学理工学院环境工程系

出　　处： 《生态科学》 2011年第6期630-635,共6页

摘　　要： 城市河道受污染底泥对水体产生大的二次污染,为有效的控制底泥污染物的释放和开发有效的水体治理技术方法,本研究利用人工模拟河道在连续流条件下,对河道污染底泥的生物修复及其对水体生物修复的影响进行了试验研究。研究结果表明:采用曝气增氧和投加底泥生物修复制剂联合处理的方式能达到好的底泥生物修复效果,能有效的提高底泥的生物降解活性(G值),削减底泥氮磷污染物的释放量,底泥G值与底泥氮、磷污染物释放量呈显著负相关性:单独采用曝气增氧和投加土著微生物制剂联合实施的生物修复方法对河道污染水体均具有良好的修复效果,但底泥的生物修复将对河道水体生物修复的效果产生大的影响。底泥生物修复后,对水体进行生物修复的处理效果更加显著,在相同实验条件下,对水体COD、氨氮的最大去除率由65.0%和16.30%提高到72.0%和41.0%,水体生物修复的周期由13 d缩短为6 d。 The release of pollutants from the river sediment causes serious secondary pollution to the overlying water. In order to find an effective way to control the release of pollutants from sediment, we studied on the bioremediation of contaminated sediment and its effects on the bioremediation of overlying water through a series of well controlled experiments that deal with the joint implementation method of aeration-bioaugmentation in a continuous flow model river. The results showed that the joint implementation method had a good effect on the sediment bioremediation. This method could effectively improve the activity of the biodegradation of sediment （G value） and reduce the release amount of nitrogen and phosphorus pollutants from sediment. Sediment G value was negatively correlated with the amount of emission of nitrogen and phosphorus pollutants. Aeration, or aeration with bioaugmentation had a good repairing effect on bioremediation of polluted water, but the bioremediation of river sediment had a more obvious impact on the efficacy of water bioremediation. After the sediment bioremediation, bioremediation of water bodies could get a more significant treatment effect. The maximum removal rates of COD and ammonia nitrogen increased from 65.0% and 16.30% to 72.0% and 41.0%, separately, and the water bioremediation cycle was shortened from 13 d to 6 d.

关 键 词： 城市河道 底泥污染 释放 水体污染 生物修复

领　　域： [环境科学与工程]