Local innovation for application of membrane system for supply of arsenic-safe water in rural Bangladesh

Tashfia Aktar, Hossain Barsha, F. Arafat, N. Khandaker, Barsha Hossain
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引用次数: 1

Abstract

Over seventy million people in Bangladesh are drinking arsenic contaminated water. There is a lack of available sustainable arsenic removal technologies in the rural Bangladesh. This paper reports on a successful retrofit that allows for readily available, cost effective and dependable membrane system application for arsenic removal in rural Bangladesh. The retrofit is very simple, overcoming the limitation of a hydraulic pressure by a low cost pump placement in line to the membrane system. The system was field tested in a well with high arsenic concentration 0.1 mg/L (Government of Bangladesh Limit is 0.05 mg/L), along with high iron and hardness. In the field trial, the retrofitted technology was successful and produced water that does not contain any arsenic (0.0 mg/L), low in iron, and low in hardness. The system cost, along with the retrofitting, is only a hundred and seventy US dollars, a sum within the reach of many in Bangladesh. It is also important to note that we are using an existing technology available off the shelf and retrofitting it using locally available materials. The work reported in the paper will create a significant impact relief to the people in the arsenic affected regions of Bangladesh.
膜系统在孟加拉国农村砷安全供水中的应用创新
孟加拉国有超过7000万人饮用受砷污染的水。孟加拉国农村地区缺乏可用的可持续除砷技术。本文报道了一项成功的改造,该改造允许在孟加拉国农村随时可用、成本有效和可靠的膜系统应用于除砷。改造非常简单,通过将低成本的泵放置在与膜系统相连的管道上,克服了液压的限制。该系统在高砷浓度(0.1 mg/L)(孟加拉国政府限值为0.05 mg/L)以及高铁和硬度的井中进行了现场测试。在现场试验中,改造后的技术取得了成功,产出的水不含任何砷(0.0 mg/L),铁含量低,硬度低。该系统的成本,加上改造,只有170美元,这是孟加拉国许多人负担得起的一笔钱。同样重要的是要指出,我们正在使用现成的现有技术,并使用当地可用的材料对其进行改造。论文中报告的工作将为孟加拉国受砷影响地区的人们带来重大的影响缓解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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