Document Detail

The role of aluminum in slow sand filtration.
MedLine Citation:
PMID:  17276479     Owner:  NLM     Status:  MEDLINE    
Engineering enhancement of slow sand filtration has been an enigma in large part because the mechanisms responsible for particle removal have not been well characterized. The presumed role of biological processes in the filter ripening process nearly precluded the possibility of enhancing filter performance since interventions to enhance biological activity would have required decreasing the quality of the influent water. In previous work, we documented that an acid soluble polymer controls filter performance. The new understanding that particle removal is controlled in large part by physical chemical mechanisms has expanded the possibilities of engineering slow sand filter performance. Herein, we explore the role of naturally occurring aluminum as a ripening agent for slow sand filters and the possibility of using a low dose of alum to improve filter performance or to ripen slow sand filters.
Monroe L Weber-Shirk; Kwok Loon Chan
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Publication Detail:
Type:  Journal Article     Date:  2007-02-05
Journal Detail:
Title:  Water research     Volume:  41     ISSN:  0043-1354     ISO Abbreviation:  Water Res.     Publication Date:  2007 Mar 
Date Detail:
Created Date:  2007-02-26     Completed Date:  2007-05-15     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0105072     Medline TA:  Water Res     Country:  England    
Other Details:
Languages:  eng     Pagination:  1350-4     Citation Subset:  IM    
Civil and Environmental Engineering, Cornell University, 220 Hollister Hall, Ithaca, NY 14853-3501, USA.
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MeSH Terms
Aluminum / chemistry*
Escherichia coli / isolation & purification*
Filtration / methods*
Silicon Dioxide / chemistry*
Water Microbiology*
Reg. No./Substance:
7429-90-5/Aluminum; 7631-86-9/Silicon Dioxide

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