桑树坪井田地下水化学特征及矿井水的再生利用

简要介绍了桑树坪井田地质与水文地质概况,按地层的含水性将井田含水层划分为第四系砂砾石层孔隙潜水中等含水层组(H1)、二叠系砂岩裂隙承压弱含水层组(H2)、石炭系砂岩灰岩裂隙承压极弱含水层组(H3)和奥陶系石灰岩溶隙溶洞承压强含水层组(H4)等4种类型。在分析各含水层组水质特征及矿井水水化学特征的基础上,得出奥灰水是矿井水的主要补给来源;并针对该井田矿井水硬度大,矿化度、SO_4~(2-)含量高的水质特征,提出了以物理一物理化学方法为基础,以电渗析法为主的净化处理矿井水方法。

Chemical Characteristics of Groundwater and Transformation From Coal Mine Discharge to Water Resources in Sangshuping Coal Mine

The general geologic and hydrogeologic conditions of Sangshuping coal mine field are briefly introduced. The aquifers of the field are divided as followings: The Quaternary gravel and sand porous phreaetic aquifers (H1) ; The Permian sandstone fissured confined aquifers (H2); The Carboniferous sandstone and limestone confined aquifers (H3); And the Ordovician limestone confined aquifers (H4); On the basis of analysis of the chemical characterized of groundwater and mine water, it is pointed out that groundwater of the Ordovician limestone aquifer is the main recharge source of mine water. The mine water is characteristic of high hardness, mineralization and SO_4~(2-) content. A purifying method, electric percolation filtration, is proposed to process the minewater.