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New Filtration Process Improves Iron and Manganese Removal
Author(s) -
Manz David H.
Publication year - 2011
Publication title -
opflow
Language(s) - English
Resource type - Journals
eISSN - 1551-8701
pISSN - 0149-8029
DOI - 10.1002/j.1551-8701.2011.tb03104.x
Subject(s) - filtration (mathematics) , filter (signal processing) , polishing , manganese , process engineering , hydrogen sulfide , materials science , sulfide , waste management , environmental science , environmental engineering , metallurgy , engineering , mathematics , electrical engineering , sulfur , statistics
This article discusses a new filtration technology, a polishing sand filter (PSF), that effectively removes iron and manganese; treats water with sulfate‐reducing bacteria (SRB) and hydrogen sulfide (H2S); reduces capital, operating, maintenance, and chemical costs; uses less energy; produces less waste; and, is easy to operate. PSF design enhances traditional slow sand filtration's (TSSF's) polishing capabilities and replaces onerous cleaning processes with a backwash process that doesn't require media to be removed or lost from the filter. A biological layer isn't required for successful operation, allowing loading rates three or more times greater than TSSF and a shallower filter bed, resulting in a more compact filter design.