Arsenic contamination of ground and pond water and water purification system using pond water in Bangladesh
Arsenic contamination of ground and pond water and water purification system using pond water in Bangladesh
复制标题
孟加拉国地下水和池塘水的砷污染以及使用池塘水的水净化系统
DOI：
10.1016/s0013-7952(00)00112-5
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发表时间：
2001
影响因子：
7.4
通讯作者：
M. Faruquee
中科院分区：
文献类型：
--
作者：
H. Yokota;K. Tanabe;M. Sezaki;Y. Akiyoshi;T. Miyata;K. Kawahara;S. Tsushima;Hiromi Hironaka;H. Takafuji;Mahbubur Rahman;S. Ahmad;M. H. S. Sayed;M. Faruquee
本文首先介绍了Samta村砷污染地下水的分布情况。该村庄位于孟加拉国的杰索尔地区，被选为调查地下水污染机制的示范村。该村90%的管井威尔斯的砷浓度高于孟加拉国标准0.05毫克/升。砷浓度在0.50 mg/l以上的管井威尔斯分布在村南，呈东西带状分布。其次，从地下水的流动角度讨论了地下水的分布，高砷区（As≥0.50mg/l）与地下水的漂移区吻合较好。此外，还开发了适合该村一小块地区的无砷供水系统。研究了一种净化池塘水的池塘砂滤系统。在兴建污水处理厂前，当局曾检查水塘的水质，以确定砷的含量。结果发现，从管井威尔斯流入的排水是造成池塘水砷污染的主要原因。安装在Samta的PSF运行良好，生产出优质的处理水。
This paper, firstly, shows the distribution of arsenic-contaminated groundwater in Samta village. This village, which is in Jessore district in Bangladesh, was chosen as a model village for investigating the mechanism of groundwater contamination. 90% of the tube wells in this village had arsenic concentrations above the Bangladesh standard of 0.05mg/l. Tube wells with arsenic concentrations of over 0.50mg/l were distributed in the southern part of the village with a belt-like shape from east to west. Secondly, groundwater distribution is discussed with respect to its flow and the high arsenic zone (As≥0.50mg/l) agrees well with the drifting zone of the groundwater. Furthermore, arsenic-free water supply systems suitable for a small area in the village have been developed. A pond sand filter (PSF) system which purifies pond water is discussed in this paper. Prior to the construction of the PSF, the water quality in ponds was examined for arsenic levels. The inflow of drainage from the tube wells was found to be the major cause of arsenic contamination of pond water. The PSF installed in Samta is working very well and produces a good quality of treated water.