墨水湖底泥重金属污染现状与评价研究

Assessment on pollution status of heavy metal in sediment of Moshui Lake in Wuhan

对武汉墨水湖底泥进行取样监测,参照国内有关标准,建立底泥污染评价标准。评价结果表明,武汉墨水湖底泥重金属中Pb、Zn的污染较普遍,且多为2种以上的复合污染,只有没有排污口的南岸底泥中Cu处于警戒等级,污染危害顺序为Zn>Pb>Cu。重金属综合污染指数为1.74,达Ⅲ级,已受轻度污染。墨水湖底泥不宜未经处理用作农用污泥。

Investigation on the sediment in Moshui Lake in Wuhan city was made, and sediment pollute evaluation criterion was set up, by consulting domestic relevant standard. The results showed that the sediment pollution from the heavy metal （Pb and Zn） was quite obvious, and most of them were complex. Only the concentrations of Cu in sediment samples near south bank were of warning grade, pollution endangering order as Zn 〉 Pb 〉 Cu. The synthetic index of sediment pollution was 1.74 , which was low-grade pollution of grade Ⅲ. It is disable to be used as agriculture fertilizer without treatment.