干旱区生态环境知识资源中心(Arid): 北方典型内陆盆地高砷地下水的水化学特征及处理技术

Arid

	北方典型内陆盆地高砷地下水的水化学特征及处理技术
其他题名	Chemical Characteristics and Remediation of High Arsenic Groundwater in Typical Inland Basins of North China
	赵凯; 郭华明; 高存荣
来源期刊	现代地质
ISSN	1000-8527
出版年	2015
卷号	29 期号:2 页码:351-360
中文摘要	我国高砷地下水分布广泛,是受砷污染最严重的地区之一,严重危害居民身体健康,开发经济、高效、环境友好的高砷地下水修复治理技术极具必要性。以大同盆地、呼包平原、河套平原和银川平原为代表性研究区域,归纳总结了北方干旱、半干旱地区典型高砷地下水区水化学特征。通常情况下,高砷地下水的 pH值较高,共存阴离子(HCO_3~-、SO_4~(2-)和 Cl~-)浓度较大,溶解性有机碳含量较高,并且 As(Ⅲ)为主要砷形态。开展了针对北方典型高砷地下水特定水化学环境特点(如 pH值、共存阴阳离子以及溶解性有机物等)的改性天然菱铁矿除砷性能研究。结果表明,改性天然菱铁矿对溶液 pH值具有良好的缓冲能力,其除砷性能基本不受 pH值、共存阴离子、Ca/ Mg阳离子及以腐殖酸为代表的溶解性有机物等典型高砷地下水水化学特征因素的影响,表明吸附剂对砷具有良好的吸附选择性。另外,改性天然菱铁矿对 As(Ⅲ)的去除效果优于对 As(V)的去除效果,因此,利用改性天然菱铁矿作为反应介质材料,将其应用于处理主要以 As(Ⅲ)形式存在的高砷地下水具备良好的发展前景。
英文摘要	High As concentrations have widely been found in potable groundwater in China,which can cause acute and chronic health effects on humans. It is nessesary to develop economic,efficient and eco-friendly technologies for As removal from As-contaminated groundwater. Chemical characteristics of high As groundwater in arid-semiarid inland basins in Northern China (including the Datong basin,the Hubao basin,the Hetao basin and the Yinchuan basin) were thoroughly reviewed and summarized. High As groundwater was typically characterized by high pH,high concentration of coexisting anions (such as HCO_3~-,SO_4~(2-),and Cl~-),and high concentrations of dissolved organic carbon. Furthermore,effects of solution pH,co-existing anions and cations,dissolved organic matter on As adsorption onto activated natural siderite were investigated according to the chemical characteristics of the typical high As groundwater. Results showed that the activated natural siderite had high capacity for buffering solution pH. Arsenic removal was independent on solution pH,coexisting anions, Ca~(2+) and Mg~(2+),and humic acid. It indicated that activated natural siderite had good adsorption selectivity for As under any conditions. In addition,the removal efficiency of activated natural siderite for As(Ⅲ) was slightly higher than that for As(V). Therefore,the activated natural siderite,as an economic,efficient and eco-friendly reaction material,appears to be a promising adsorbent for remediation of As (Ⅲ) -dominated high arsenic groundwater.
中文关键词	高砷地下水 ; 水化学特征 ; 除砷 ; 改性天然菱铁矿 ; 吸附
英文关键词	high arsenic groundwater hydrochemical characteristic arsenic removal activated natural siderite adsorption
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Mineralogy
CSCD记录号	CSCD:5398916
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/378859
作者单位	赵凯, 中国地质大学(北京)水资源与环境学院, 北京 100083, 中国.; 郭华明, 中国地质大学(北京)水资源与环境学院, 生物地质与环境地质国家重点实验室, 北京 100083, 中国.; 高存荣, 中国地质环境监测院, 北京 100081, 中国.
推荐引用方式 GB/T 7714	赵凯,郭华明,高存荣. 北方典型内陆盆地高砷地下水的水化学特征及处理技术[J],2015,29(2):351-360.
APA	赵凯,郭华明,&高存荣.(2015).北方典型内陆盆地高砷地下水的水化学特征及处理技术.现代地质,29(2),351-360.
MLA	赵凯,et al."北方典型内陆盆地高砷地下水的水化学特征及处理技术".现代地质 29.2(2015):351-360.