Fate of low arsenic concentrations during full-scale aeration and rapid filtration

None, None; None, None; None, None

Fate of low arsenic concentrations during full-scale aeration and rapid filtration

Conference Paper (2016)

Author(s)

J. C.J. Gude (TU Delft - Sanitary Engineering)

L. C. Rietveld (TU Delft - Water Management)

D. van Halem (TU Delft - Sanitary Engineering)

DOI related publication

https://doi.org/10.1201/b20466-218 Final published version

To reference this document use

https://resolver.tudelft.nl/uuid:44428d34-53cf-4c8e-970e-06387a21edd5

More Info

expand_more

Publication Year

2016

Language

English

Pages (from-to)

470-471

ISBN (print)

978-1-138-02941-5

ISBN (electronic)

978-1-315-62943-8

Event

6th International Congress on Arsenic in the Environment (2016-06-19 - 2016-06-23), http://www.as2016.se/, Stockholm, Sweden

Downloads counter

137

Abstract

Arsenic (As) mobility during full-scale aeration and rapid filtration was investigated. As(III) remained largely mobile during aeration and as supernatant water and was not efficiently immobilized. In the filter bed however, oxidation of As(III) was complete within 2 min of contact time and As removal efficiency improved. Therefore, the overall conclusion is that not aeration and supernatant storage, but the filter bed is the crucial treatment step for rapid As(III) removal, indicating the importance to control the oxidation sequence of Fe and As for achieving improved As removal efficiencies.