Comparison of pyrolucite fixed and fluidized beds for iron and manganese control in groundwater: A pilot-scale study

•Selection of an appropriate distributor plate was crucial for the PFB performance.•Initial Fe concentration severely affected the PFB performance for Fe/Mn control.•PFB is recommended for utilities with Mn removal objective and negligible Fe level.•Fe/Mn control was properly achieved within the fix...

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Bibliographic Details
Published in:Journal of environmental chemical engineering 2017-06, Vol.5 (3), p.2986-2996
Main Authors: Dashtban Kenari, Seyedeh Laleh, Shabanian, Jaber, Barbeau, Benoit
Format: Article
Language:English
Subjects:
Fixed bed
Fluidized bed
Groundwater treatment
Iron/manganese removal
Pyrolucite
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Summary:•Selection of an appropriate distributor plate was crucial for the PFB performance.•Initial Fe concentration severely affected the PFB performance for Fe/Mn control.•PFB is recommended for utilities with Mn removal objective and negligible Fe level.•Fe/Mn control was properly achieved within the fixed bed under elevated Fe level.•Headloss within the PFB contactor remained constant, regardless of water quality. Iron and manganese removal is a common water treatment goal in groundwater systems. Pilot-scale pyrolucite fixed and fluidized bed contactors were tested in parallel to examine the iron and manganese removal from a natural groundwater which was supplemented with iron and manganese in order to challenge both processes. The results showed that the design of the distributor plate located at the bottom of the pyrolucite fluidized bed (PFB) contactor had crucial impact on the release of particulate manganese from the filter media. Using an optimal distributor plate, the PFB contactor provided effective manganese removal (
ISSN:2213-3437
2213-3437
DOI:10.1016/j.jece.2017.05.053