{"title":"Arsenic Treatment Using Electrolytic Ferrous Reagent to Replace Bulk Ferric Chloride","authors":"Vladimir Dozortsev, Roy Sanchez","doi":"10.1002/awwa.2279","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>As federal maximum contaminant level (MCL) recommendations for arsenic in drinking water are being reviewed, US utilities are preparing for more stringent regulations.</p>\n <p>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.</p>\n <p>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.</p>\n <p>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.</p>\n </div>","PeriodicalId":14785,"journal":{"name":"Journal ‐ American Water Works Association","volume":"116 5","pages":"38-48"},"PeriodicalIF":0.7000,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal ‐ American Water Works Association","FirstCategoryId":"93","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/awwa.2279","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}
引用次数: 0
Abstract
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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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.
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