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Emerging and innovative techniques for arsenic removal applied to a small water supply system

The impact of arsenic on human health has led its drinking water MCL to be drastically reduced from 50 to 10 ppb. Consequently, arsenic levels in many water supply sources have become critical. This has resulted in technical and operational impacts on many drinking water treatment plants that have required onerous upgrading to meet the new standard. This becomes a very sensitive issue in the context of water scarcity and climate change, given the expected increasing demand on groundwater sources. This work presents a case study that describes the development of low-cost techniques for efficient arsenic control in drinking water. The results obtained at the Manteigas WTP (Portugal) demonstrate the successful implementation of an effective and flexible process of reactive filtration using iron oxide. At real-scale, very high removal efficiencies of over 95% were obtained. [authors abstract]

TitleEmerging and innovative techniques for arsenic removal applied to a small water supply system
Publication TypeJournal Article
Year of Publication2009
AuthorsDuarte, A.A.L.S., Cardoso, S.J.A., Al├žada, A.J.
PaginationP. 1288-1304 : 6 fig., 3 tab.
Date Published2009-12-11
Keywordsappropriate technology, arsenic, efficiency, field studies, public health, removal, safe water supply, sdiwat
Abstract

The impact of arsenic on human health has led its drinking water MCL to be drastically reduced from 50 to 10 ppb. Consequently, arsenic levels in many water supply sources have become critical. This has resulted in technical and operational impacts on many drinking water treatment plants that have required onerous upgrading to meet the new standard. This becomes a very sensitive issue in the context of water scarcity and climate change, given the expected increasing demand on groundwater sources. This work presents a case study that describes the development of low-cost techniques for efficient arsenic control in drinking water. The results obtained at the Manteigas WTP (Portugal) demonstrate the successful implementation of an effective and flexible process of reactive filtration using iron oxide. At real-scale, very high removal efficiencies of over 95% were obtained. [authors abstract]

NotesThis article belongs to the Special Issue Sustainable Water Management. - 42 ref.
Custom 1241.3, 250

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The copyright of the documents on this site remains with the original publishers. The documents may therefore not be redistributed commercially without the permission of the original publishers.