NIH-Centre for Flood Management Studies, G.S. Road, Sapta Sahid Path, Mathura Nagar, Dispur, Guwahati, Assam 781 006, India.
J Environ Manage. 2012 Sep 30;107:1-18. doi: 10.1016/j.jenvman.2012.04.016. Epub 2012 May 10.
Arsenic contamination in ground water, used for drinking purpose, has been envisaged as a problem of global concern. However, arsenic contamination of ground water in parts of South East Asia is assuming greater proportions and posing a serious threat to the health of millions of people. A variety of treatment technologies based on oxidation, co-precipitation, adsorption, ion exchange and membrane process are available for the removal of arsenic from ground water. However, question remains regarding the efficiency and applicability/appropriateness of the technologies, particularly because of low influent arsenic concentration and differences in source water composition. Some of these methods are quite simple, but the disadvantage associated with them is that they produce large amounts of toxic sludge, which needs further treatment before disposal into the environment. Besides, the system must be economically viable and socially acceptable. In this paper an attempt has been made to review and update the recent advances made in the technological development in arsenic removal technologies to explore the potential of those advances to address the problem of arsenic contamination in South East Asia.
地下水砷污染，用作饮用水，已被视为一个全球性关注的问题。然而，东南亚部分地区地下水的砷污染正在加剧，并对数百万人的健康构成严重威胁。有多种基于氧化、共沉淀、吸附、离子交换和膜处理的处理技术可用于去除地下水中的砷。然而，这些技术的效率和适用性/适当性仍然存在问题，特别是由于进水砷浓度低和源水成分的差异。其中一些方法相当简单，但与之相关的缺点是会产生大量有毒污泥，在排放到环境中之前需要进一步处理。此外，该系统必须具有经济可行性和社会可接受性。本文试图回顾和更新最近在砷去除技术的技术发展方面取得的进展，以探讨这些进展的潜力，以解决东南亚地区的砷污染问题。
