陕西省废水排放造成的重金属污染研究

文章对陕西省2011-2016年间废水排放量及其中重金属排放量的变化趋势、重金属危害性进行分析,结果显示:6年间陕西省的废水排放量不断增加,年均增长速度为6.46%。而废水中的重金属排放量呈下降趋势,铅、汞、镉、总铬、砷的排放量分别比2011年降低76.37%、22.49%、67.16%、57.14%、-44.11%。

In this paper, the wastewater discharge from the years 2011 to 2016 in Shaanxi Province, the variation trend of heavy metal discharge and the harm of heavy metal were analyzed. The results showed that the wastewater discharge in Shaanxi Province has increased continuously in the last 6 years, with an average annual growth rate of 6.46%. The discharge of heavy metals in wastewater showed a downward trend, and the emissions of lead, mercury, cadmium, total chromium and arsenic were respectively 76.37%, 22.49%, 67.16%, 57.14% and -44.11% lower than those in 2011.