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

In the Netherlands, groundwater treatment commonly consists of aeration, with subsequent sand filtration without using chemical oxidants like chlorine. With arsenic (As) concentrations well below the actual guidelines of 10 μg As/L, groundwater treatment plants have been exclusively designed for the...

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Veröffentlicht in:	Water research (Oxford) 2016-01, Vol.88, p.566-574
Hauptverfasser:	Gude, J.C.J., Rietveld, L.C., van Halem, D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Adsorption Aeration Arsenic Arsenic - analysis Arsenic removal Arsenite oxidation Drinking Water - analysis Filtration Filtration - instrumentation Groundwater - analysis Groundwater treatment Iron Manganese Natural arsenic removal capacity Netherlands Oxidation Rapid filtration Sand Silicon Dioxide - chemistry Water Pollutants, Chemical - analysis Water Purification - instrumentation Water Purification - methods
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Beschreibung
Zusammenfassung:	In the Netherlands, groundwater treatment commonly consists of aeration, with subsequent sand filtration without using chemical oxidants like chlorine. With arsenic (As) concentrations well below the actual guidelines of 10 μg As/L, groundwater treatment plants have been exclusively designed for the removal of iron (Fe), manganese and ammonium. The aim of this study was to investigate the As removal capacity at three of these groundwater treatment plants (10–26 μg As/L) in order to identify operational parameters that can contribute to lowering the filtrate As concentration to
ISSN:	0043-1354 1879-2448
DOI:	10.1016/j.watres.2015.10.034