Investigation of arsenic removal performance by a simple iron removal ceramic filter in rural households of Bangladesh
Investigation of arsenic removal performance by a simple iron removal ceramic filter in rural households of Bangladesh
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DOI：
10.1016/j.desal.2010.07.031
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发表时间：
2011-01-15
期刊：
影响因子：
9.9
通讯作者：
Bari, Quazi Hamidul
中科院分区：
文献类型：
--
作者：
Shafiquzzaman, Md.;Azam, Md. Shafiul;Bari, Quazi Hamidul
地下水砷中毒在孟加拉国和西孟加拉邦（印度）造成了毁灭性的健康危机。该地区的地下水中也含有高浓度的铁（Fe）。当地制造商开发了一种简单的除铁陶瓷过滤器，目前已在孟加拉国农村家庭中使用。本研究的目的是考察该过滤器对铁和砷的去除性能，并提出通过引入额外的铁（铁网）源和铁氧化细菌来提高对砷的去除效率。通过实地调查对该过滤器的技术性能和社会性能进行了评价。现场试验结果表明，该过滤器对氧化共沉淀法除铁效果良好。砷的去除效果与地下水中铁和砷的初始浓度密切相关。这种简单的除铁过滤器具有较高的用户接受度，满意度和持续使用。用铁网和铁氧化细菌对该过滤器进行简单改造，砷的去除率提高了18%。本研究表明，对这种简单、廉价的过滤器进行改造，可用于砷污染地区砷和铁的同时处理。(C) 2010 Elsevier BM。版权所有。
Arsenic (As) poisoning of groundwater has caused a devastating health crisis in Bangladesh and West Bengal (India). A high concentration of iron (Fe) is also present in groundwater of this region. A simple Fe removal ceramic filter was developed by local manufacturer and currently employed in rural households of Bangladesh. The aims of this study were to investigate the Fe and As removal performance of this filter and proposed a modification in order to enhance the As removal efficiency by introducing additional source of Fe (iron net) and iron oxidizing bacteria. Technical and social performances of the filter were assessed by filed survey. The field data suggested that the filter is very effective in Fe removal through oxidation and co-precipitation process. Arsenic also was removed and removal efficiency was highly depended on the initial concentration of Fe and As in groundwater. This simple Fe removal filter showed high user acceptance, satisfaction and sustained use. A simple modification of this filter using iron net and iron oxidizing bacteria substantially increased 18% more As removal. This study suggested that modification of this simple and inexpensive filter could be applied for the simultaneous treatment of As and Fe in the As contaminated region. (C) 2010 Elsevier BM. All rights reserved.