Arsenic Polluted Groundwater and Its Countermeasures in the Middle Basin of the Ganges, Uttar Pradesh State, India
Arsenic Polluted Groundwater and Its Countermeasures in the Middle Basin of the Ganges, Uttar Pradesh State, India
复制标题
印度北方邦恒河中部盆地地下水砷污染及其对策
DOI：
10.4236/jep.2012.328100
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
H. Yokota
中科院分区：
文献类型：
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作者：
Y. Yano;Kenichi Ito;Akihiko Kodama;K. Shiomori;Shigeki Tomomatsu;M. Sezaki;H. Yokota
北方邦的地下水砷污染于2003年首次被发现，目前70个地区中有20个地区受到砷污染。宫崎大学从2008年6月至今与JICA（日本国际协力事业团）在20个地区中砷污染最严重的Bahraich地区实施了砷污染缓解项目。在这两个村庄实施了综合缓解措施，如提高村民的认识、安装替代供水装置和为砷中毒患者提供医疗保健。砷中毒患者的症状并不严重，因此，通过本项目安装的除砷装置提供的砷安全水，将改善砷中毒患者的症状。本文针对地下水砷污染的现状和机理，结合除砷装置的安装，对以下几个方面进行了探讨：1）地下水在深管井中几乎都受到砷污染（深度：约30 m），但在浅管井中很少（2）砷污染地下水处于还原状态，非砷污染地下水处于氧化状态; 3）土壤砷含量与Fe ~（2+）和~（2-）N含量基本呈线性关系：4）土壤砷含量在25 m左右为高砷砂; 5）砷在土壤中主要以可还原态或弱酸可溶态存在，不存在可氧化态。
The arsenic contamination of groundwater in Uttar Pradesh State was first recognized in 2003 and is now seen at 20 Districts out of 70 Districts. University of Miyazaki has performed the arsenic mitigation project in Bahraich District, severest arsenic-affected one in the 20 Districts, from June 2008 until now, with JICA (Japan International Cooperation Agency). The integrated mitigation, such as the raising awareness of villager, installing of alternative water supply units and healthcare of arsenocosis patients, have been executed at the 2 villages. The symptom of the arsenocosis patients was not so severe, which will be, therefore, improved by drinking arsenic-safe water supplied through arsenic removal units, installed by this project. In this paper, following results is discussed for the situation and mechanism of arsenic contamination of groundwater, objected in connection with the installation of arsenic removal units: 1) Groundwater is almost contaminated with arsenic in deep tubewell (depth: about 30 m), but scarcely in shallow tubewell (depth: about 10 m); 2) Arsenic contaminated groundwater is under the reduced condition with the oxidized condition for no-arsenic contaminated groundwater; 3) Arsenic concentration shows almost linear correlation with concentrations of Fe2+ and -N; 4) Ground is composed of sand with high arsenic content at around 25 m depth; 5) Arsenic exists mainly in the phase of reducible fraction or weak acid soluble fraction but no oxidizable fraction in the ground.
影响因子：
3.4
作者：
Akai, J;Izumi, K;Akai, K
通讯作者：
Akai, K
DOI：
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发表时间：
2005
期刊：
1^<st> IWA-ASPIRE, Conference ＆ Exhibition, Environmental Engineering Society of Singapore July,2005
影响因子：
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作者：
M M.Hussainuzzaman;Y.Setoyama;D.Kataoka;H.Yokota
通讯作者：
H.Yokota