Department of Civil Engineering and Architecture, University of Pavia, Via Ferrata 3, 27100, Pavia, Italy.
Department of Theoretical and Applied Sciences, University of Insubria, Via G.B. Vico 46, 21100, Varese, Italy.
Environ Sci Pollut Res Int. 2018 Sep;25(26):26135-26143. doi: 10.1007/s11356-018-2674-y. Epub 2018 Jul 3.
Arsenic is among the most dangerous contaminants which can limit groundwater use for drinking water consumption. Among the most diffused As-removal technologies around the world, adsorptive media systems are usually favored for relatively low cost and simplicity of operation. This study examines the performance of a laboratory-scale iron oxide-coated sand (IOCS) column filter, to remove arsenic (arsenate (As[V]) and arsenite (As[III])) from groundwater. This technology could be adopted in small communities, as it showed consistent removal rates of 99% with an easy-to-operate process. Some considerations about the possible introduction of such technology in developing countries are provided, highlighting the general impacts to human health related to high arsenic concentrations in groundwater. This, among other adsorption processes, could be recommended as a sustainable mean of ensuring good drinking water quality in developing regions, reducing human health impacts.
砷是最危险的污染物之一，会限制地下水作为饮用水的使用。在全世界应用最广泛的除砷技术中，吸附介质系统通常因其成本相对较低且操作简单而受到青睐。本研究考察了实验室规模的氧化铁涂覆砂（IOCS）柱式过滤器去除地下水中砷（砷酸盐（As[V]）和亚砷酸盐（As[III]））的性能。该技术可在小型社区中采用，因为其去除率始终保持在 99%，操作过程简单。文中还提供了一些关于在发展中国家可能引入该技术的考虑因素，突出了与地下水高砷浓度相关的对人类健康的普遍影响。这种技术，以及其他一些吸附过程，可以被推荐为确保发展中地区良好饮用水质量、减少人类健康影响的可持续手段。
