河流底泥污染类型标准的制定

Enactment of the Standard Concerning Polluted Sediment Types in the Rivers

近年来,城市河流的污染采取了一系列的治理措施,河水中污染物的浓度已明显下降。但是经有机物、重金属污染物逐年积累而污染的河床底泥,由于水流作用将释放至水相,再次影响整治后的河流水质。因此制定一个符合我国国情的底泥环境质量标准,已提到议事日程上来。

This work is designed to explore the regularity of organic and heavy metal pollutants released from re-suspended sediment in the Suzhouhe River of Shanghai, and to propose the classification standard of sediment on the basis of surface water quality standard. The proposed standard is classified into nonpollution, pollution and heavy pollution by comparing each of chemical parameters. Pollution assessment was done for the Suzhouhe River according to the standard. It is showed that when the sections of heavily polluted sediment are cleaned up, the sediment would no longer influence on water quality in the Suzhou-he River.