苏州河的污染底泥评价

Assessment of Polluted Sediment on Suzhou Creek

以底泥与流动水相的边界环境为研究对象,应用苏州河底泥的释放与耗氧规律,在控制地面水水质标准的环境基础上拟定了底泥评价分级标准,将评价的有机污染指标确定为未污染、污染、重污染底泥的类型级别。应用拟定的分级标准对苏州河的污染底泥进行评价,指出若对属于重污染类型的部分河段底泥进行整治,则整个市区段底泥释放至水相的浓度,将接近地面水三级标准。

Exploration of the regularity of organic pollutants release and oxygen demand from re-suspended sediment in Suzhou Creek, Shanghai were presented, and to propose the classification standard of sediment on the basis of surface water quality standard. The proposed standard may be classified into nonpollution, pollution and heavy pollution by comparing with each of organic pollutant parameter, then pollution assessment was conducted for Suzhou Creek according to the proposal standard. It showed that when the section of heavily polluted sediment was cleaned up, the sediment would no longer effect on water quality in Suzhou Creek.