黄河水体对北郊水源地砷污染的影响研究  

Influence of Yellow River Body on Arsenic Pollution in North Suburb Groundwater

作　　者：刘杰[1] 李红卫[1] 吕谋[1] 孙英杰[1] 

机构地区：[1]青岛理工大学环境与市政工程学院,山东青岛266033

出　　处：《中国给水排水》2016年第9期77-80,共4页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2009ZX07424-002);国家自然科学基金资助项目(51008164)

摘　　要：通过分析北郊水源地砷污染现状、黄河对地下水补给和影响以及黄河水质泥沙中砷含量与地下水关系几个方面，研究了黄河水体对地下水砷超标的影响。检测数据表明，水源地区域黄河水体中砷、铁和锰的平均含量分别为2．75μg／L、0．44mg／L、0．14mg／L，铁、锰含量均高于集中式生活饮用水地表水源地补充项目标准限值（0．3mg／L和0．1mg／L），加之水体为氧化环境，Eh为30．9～78．2mV，致使水中微量砷会被粘土颗粒及形成的铁／锰氧化物或氢氧化物吸附沉积，并在地层中富集。由于黄河水本身含有一定浓度砷，强蒸发作用加剧了潜水一微承压含水层砷的富集，但是黄河水及沙层沉积物中砷含量释放能力有限。The influence of Yellow River water body on the standard exceeding of arsenic in groundwater was analyzed in terms of the present situation of arsenic pollution in the north suburb ground-water, the supply and effect of Yellow River on the groundwater, as well as the relationship between arsenic level in the sediment and the groundwater. Testing data indicated that the contents of arsenie, iron and manganese in the Yellow River water were 2.75 μg/L, 0.44 mg/L and 0.14 mg/L respeetively, in which the contents of iron and manganese were both higher than the drinking water standard limits of 0.3 mg/L and 0. 1 mg/L. Moreover, the water was in an oxidizing environment where Eh was 30.9 to 78.2 inV. Therefore, the trace arsenic in water could be adsorbed by clay particles and iron/manganese oxide or hydroxide, and then deposited and enriched in the stratum. Because of the Yellow River water itself containing a certain quantity of arsenic, strong evaporation exacerbated the enrichment of the aquifer arsenic. But the release ability of arsenic in water and sand sediment was limited.

关 键 词：砷 黄河 地下水 补给 

分 类 号：X52[环境科学与工程—环境工程]