珠江流域重污染感潮河道黑臭治理新技术

An Integrated Technology to Control Black-Odor of Heavily Polluted Tidal River in Pearl River Delta Area

采用底泥曝气、底泥稳定化及激活土著微生物等集成技术进行重污染感潮河道黑臭治理试验研究。结果表明：①通过底泥曝气，硫化物去除率可达到95．7％，臭味基本消除。②稳定化后底泥Cu，Pb，Zn，Cr释放量降低85％～95％，TP抑制率达到90％，底泥硫化物稳定在15mg／kg以下。③底泥土著活性污泥层对水体及底泥污染物有良好的降解作用，降解后表层底泥呈亮褐色，黑臭现象基本消除。

One integrated technology including sediment aerating, sediment stabilization and indigenous bacteria stimulation was carried out to control the black-odors of heavily polluted tidal rivers in Pearl River Delta Area. The result showed that ①By sediment aerating, 95.7% of sulfide was oxidized and the odors disappeared. ②Release amount of Cu, Pb, Zn, Cr from sediments was reduced by 80% - 95% after stabilization treatment, while 90% of TP was stabilified, in addition, the concentration of sulfide in treated sediments kept below 15mg/kg. ③The activated bio-sludge layer of the indigenous bacteria had high biodegrade capacity, it turned the color of surface sediments from black to light brown, which solved the ＂black＂ problem.