Pilot-scale demonstration of phytofiltration for treatment of arsenic in New Mexico drinking water.
Pilot-scale demonstration of phytofiltration for treatment of arsenic in New Mexico drinking water.
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DOI：
10.1016/j.watres.2005.07.029
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发表时间：
2005-10
期刊：
影响因子：
12.8
通讯作者：
M. Elless;C. Poynton;C. Willms;M. Doyle;A. López;Dale A Sokkary;B. W. Ferguson;M. Blaylock
中科院分区：
文献类型：
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作者：
M. Elless;C. Poynton;C. Willms;M. Doyle;A. López;Dale A Sokkary;B. W. Ferguson;M. Blaylock
饮用水的砷污染对全世界数百万人的健康构成严重威胁。为了降低这种风险，美国环境保护署最近将饮用水中砷的最大污染水平从50 μgL-1降低到10μgL-1。大多数需要合规的供水系统都是为不到10 000人服务的小型系统。目前用于清洁砷污染水的技术存在重大缺陷，特别是对于小型处理系统。在这个中试规模的示范，我们调查了使用砷超积累蕨类植物去除饮用水中的砷，使用连续流植物过滤系统。在为期3个月的演示期间，该系统持续生产出砷浓度低于2μgL−1检测限的水，流量高达1900 L/天，总处理水量约为60，000 L。我们的研究结果表明，植物过滤提供了一个太阳能驱动的水培技术，使小规模的砷污染的饮用水净化的基础。
Arsenic contamination of drinking water poses serious health risks to millions of people worldwide. To reduce such risks, the United States Environmental Protection Agency recently lowered the Maximum Contaminant Level for arsenic in drinking water from 50 to 10μgL−1. The majority of water systems requiring compliance are small systems that serve less than 10,000 people. Current technologies used to clean arsenic-contaminated water have significant drawbacks, particularly for small treatment systems. In this pilot-scale demonstration, we investigated the use of arsenic-hyperaccumulating ferns to remove arsenic from drinking water using a continuous flow phytofiltration system. Over the course of a 3-month demonstration period, the system consistently produced water having an arsenic concentration less than the detection limit of 2μgL−1, at flow rates as high as 1900L day−1for a total treated water volume of approximately 60,000L. Our results demonstrate that phytofiltration provides the basis for a solar-powered hydroponic technique to enable small-scale cleanup of arsenic-contaminated drinking water.