安徽省宿临矿区高氟中层地下水氟分布及成因研究  

Study on the fluorine distribution and formation of high fluorine middle-level groundwater in Sulin mining area,Anhui

作　　者：张伟 郝春明 林冬健 贾艳丽 ZHANG Wei;HAO Chunming;LIN Dongjian;JIA Yanli(School of Safety Engineering,North China Institute of Science and Technology,Langfang Hebei 065201;School of Chemical&Environmental Engineering,China University of Mining and Technology(Beijing),Beijing 100083)

机构地区：[1]华北科技学院安全工程学院,河北廊坊065201 [2]中国矿业大学(北京)化学与环境工程学院,北京100083

出　　处：《环境污染与防治》2021年第8期1022-1027,共6页Environmental Pollution & Control

基　　金：河北省硕士研究生创新资助项目(No.CXZZSS2021166);冷水江锡矿山生态环境承载力评价项目(No.LCG2020009);中央高校基本科研业务费专项(No.3142018009)。

摘　　要：安徽省的宿临矿区存在高氟中层地下水,而对其中的氟分布及成因研究甚少。为此,通过系统采集30个宿临矿区中层地下水样品,研究了F-分布特征,并探讨了地下水中F-的形成机制。结果表明,宿临矿区中层地下水中F-质量浓度为0.16~2.06 mg/L,均值为1.07 mg/L,相比《生活饮用水卫生标准》(GB 5749—2006)有53%的样品超标,高氟水(F-≥1.0 mg/L)面积达到1958 km 2,占总面积的64.1%,水化学类型为HCO 3-Na型。蒸发浓缩,方解石、白云石沉淀和萤石溶解,OH^(-)、HCO^(-)_(3)与F^(-)的竞争吸附,以及地下水中的Ca^(2+)、Mg^(2+)与矿物质中的Na^(+)、K^(+)阳离子交换等作用是宿临矿区高氟中层地下水的主要形成机制。High fluorine middle-level groundwater exists in Sulin mining area,Anhui.However,fluorine distribution and its formation mechanism are not fully understood.30 middle-level groundwater samples in Sulin mining area were collected.F-distribution characteristics was studied,and the formation mechanism was discussed.Results showed that the middle-level groundwater F^(-)mass concentration in Sulin mining area was 0.16-2.06 mg/L,with the average of 1.07 mg/L.53%samples had exceeded“Standards for drinking water quality”(GB 5749-2006)with HCO_(3)-Na hydrochemical type.The area of high F^(-)groundwater(F^(-)≥1.0 mg/L)reached 1958 km^(2),covering 64.1%of the total area.Evaporation and concentration,calcite and dolomite sedimentation and fluorite dissolution,OH^(-)and HCO^(-)_(3)competitive adsorption with F^(-),and Ca^(2+)and Mg^(2+)in groundwater exchange with Na^(+) and K^(+) in minerals were the main high F-formation mechanisms.

关 键 词：高氟水 中层地下水 水化学类型 宿临矿区 

分 类 号：R123.1[医药卫生—环境卫生学]