湖南湘江流域污染的安全评价

Safety Evaluation on Pollution of Xiang River Valley in Hunan Province

对湖南湘江流域的污染开展了调查并进行了安全评价,结果表明:湘江水系的污染区域主要集中在郴州、常宁—衡阳和株洲三个江段,污染源主要是有色金属、化工企业所排含有大量重金属元素的生产废水。建议改进现有生产工艺并使生产废水达标排放。

Investigation was made on pollution status in Xiang River valley of Hunan Province and safety evaluation was carried out as well.The result shows that the polluted area of Xiang River system mainly locates on three river reaches of Chenzhou,Changning—Hengyang and Zhuzhou,and the pollution mainly comes from discharged production wastewater with a lot of heavy metal from non-ferrous metal,chemical enterprises.It is suggested that the current production processes should be improved to make the production wastewater meet the discharge standards.