土壤对煤矸石填充时地下水中F^-、SO_4^(2-)的吸附规律  

The Soil's Capability to Adsorb F^- and SO_4^(2-) Which in the Soaked Solution of Coal Gangue

作　　者：徐素娟[1] 唐敏[1] 张新[2] 王谊平 

机构地区：[1]河南理工大学资源环境学院,河南焦作454003 [2]平顶山工业职业技术学院资源开发系,河南平顶山467001 [3]徐州矿物集团,江苏徐州221616

出　　处：《环境科学与管理》2007年第9期36-38,49,共4页Environmental Science and Management

基　　金：河南省重点科技攻关项目<煤炭固体废物大宗安全填充处置技术>;项目编号:0423032900

摘　　要：通过室内静态模拟浸泡试验,文章探讨了平煤集团十二矿附近的土壤对该矿煤矸石井下填充过程中地下水溶出的F-和SO42-的吸附性能。研究发现:土壤对F-吸附效果较好,而对SO42-较差;改性土壤对F-和SO42-的吸附效果均较好,均能使其在地下水中的含量达到地下水Ⅲ类标准;F-和SO42-在改性土壤上的吸附等温模型分别符合Freundlich、Temkin等温式;改性土壤对F-和SO42-的解吸过程分为快速和慢速两个反应阶段。通过试验数据分析得出:井下填充时煤矸石和改性土壤的最佳配比为1:0.26。The thesis disscused the soil＇s capability to adsorb F^- and SO4^2- which in the soaked solution of coal gangue come from the 12th coal mine of Pingdingshan through some experiments, using simulate the soaked solution in static state. The study show that the soil have a good ability to adsorb F^-, but not good to SO4^2- ; the modified soil adsorb F^- and SO4^2- well, their content in soaked solution reaches the undergroundwater standard Ⅲ ; F^- and SO4^2-＇s model of isothermal adsorption match Freundlich and Temkin equation; soil desorption of F^- and SO4^2- have slow and fast two reaction stages. Analyzing of the experiment data indicate that： the best ratio of coal gangue and modified soil is 1：0.26 when make use of coal gangue fill the well.

关 键 词：煤矸石 土壤 F^-和SO4^2- 吸附 解吸 

分 类 号：X523[环境科学与工程—环境工程]