含铜废物处置企业地下水的环境影响预测评价

Environmental Impact Prediction and Assessment of Underground Water for Copper Waste Disposal Enterprise

以某铜资源再生企业厂区为研究区域,使用模型预测的方法研究了企业废水中COD、镉、铬、铅、砷和铜渗入土壤后对地下水的影响。结果表明,正常工况下在预测范围1825天内,污染物不会超出厂界,不会影响到厂区外运河的水质,污染物主要向南扩散。非正常工况下,COD、镉、铬和铅主要在厂区内,受地下水流向控制,污染源主要向南迁移扩散;365天后砷和铜污染物处于厂区范围内,1825天后砷和铜超出厂界,铜污染物最大迁移距离为17 m。污染防渗措施对溶质运移会产生明显的影响,污染物运移范围主要受场地水文地质条件的影响。

Effects of COD,Cd,Cr,Pb,As and Cu after infiltration into soil on the groundwater quality were studied by using model prediction method with the plant area of a copper resource recycling enterprise as research area.The results indicated that the pollutants will not exceed the plant boundary and not affect the water quality of canal outside the plant area within 1825 days under normal condition,and the pollutants mainly diffuse southward.COD,Cd,Cr and Pb are in the plant area and mainly controlled by the groundwater flow under abnormal conditions,and the pollutants mainly diffuse southward.After 365 days,As and Cu pollutants are within the plant area.However,As and Cu pollutants exceed the plant boundary after 1825 days,and the maximum migration distance of Cu pollutant is 17 m.The pollution anti-seepage measures have an obvious impact on solute transport,and the transport range of pollutants is mainly affected by the hydrogeological conditions of the site.