使用电解亚铁试剂替代散装氯化铁处理砷

IF 0.7 4区环境科学与生态学 Q4 ENGINEERING, CIVIL

Journal ‐ American Water Works Association Pub Date : 2024-05-15 DOI:10.1002/awwa.2279

Vladimir Dozortsev, Roy Sanchez

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引用次数: 0

摘要

由于联邦正在对饮用水中砷的最高污染物含量（MCL）建议进行审查，美国的公用事业公司正在为更严格的规定做准备。科罗拉多州阿拉莫萨市如果要将其处理过的水中的砷浓度降至 5 μg/L，就必须增加氯化铁的用量，从而引发供应、成本和运营方面的问题。为了避免这些问题，该市探索了一种新技术，即通过原位电解工艺生成亚铁试剂，以取代散装氯化铁。电解亚铁试剂可将砷去除至 5 微克/升以下，降低渗透锰含量，并以更低的混凝剂剂量改善出水质量。

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Arsenic Treatment Using Electrolytic Ferrous Reagent to Replace Bulk Ferric Chloride

As federal maximum contaminant level (MCL) recommendations for arsenic in drinking water are being reviewed, US utilities are preparing for more stringent regulations.

If faced with reducing its treated water's arsenic concentration to 5 μg/L, the City of Alamosa, Colo., would need to increase its ferric chloride dose—raising supply, cost, and operational concerns.

To avoid these issues, the city explored a new technology that generates a ferrous reagent via an in situ electrolytic process to replace bulk ferric chloride.

The electrolytic ferrous reagent removed arsenic to below 5 μg/L, reduced permeate manganese levels, and improved effluent quality with a far lower coagulant dose.

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来源期刊

Journal ‐ American Water Works Association Multiple-

CiteScore

1.00

自引率

28.60%

发文量

179

审稿时长

4-8 weeks

期刊介绍： Journal AWWA serves as the voice of the water industry and is an authoritative source of information for water professionals and the communities they serve. Journal AWWA provides an international forum for the industry’s thought and practice leaders to share their perspectives and experiences with the goal of continuous improvement of all water systems. Journal AWWA publishes articles about the water industry’s innovations, trends, controversies, and challenges, covering subjects such as public works planning, infrastructure management, human health, environmental protection, finance, and law. Journal AWWA will continue its long history of publishing in-depth and innovative articles on protecting the safety of our water, the reliability and resilience of our water systems, and the health of our environment and communities.