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231223s2005 xx ||||| 00| ||eng c |
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|a (NLM)16114672
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|c DE-627
|e rakwb
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|a eng
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|a Shilton, A
|e verfasserin
|4 aut
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|a 'Active' filters for upgrading phosphorus removal from pond systems
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|c 2005
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 15.12.2005
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|a Date Revised 21.11.2013
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|a published: Print
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|a Citation Status MEDLINE
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|a This paper investigates limestone and iron slag filters as an upgrade option for phosphorus removal from wastewater treatment ponds. A review of 'active' filter technology and the results from laboratory and field research using packed columns of the different media is presented. It is shown that both limestone and iron slag can remove phosphorus but highlights that different types of limestone give markedly different performance. Filter performance appears to be improved by increasing temperature and by the presence of algae, presumably because of its tendency to elevate pH. Performance is related to hydraulic retention time (HRT), but this relationship is not linear, particularly at low HRTs. Importantly for future research, the results from field-testing with pond effluent show significant differences compared to those obtained when using a synthetic feed in the laboratory. For the iron slag filter, higher performance was observed in the field (72% in field vs. 27% in laboratory, at a 12 hour-HRT), while the opposite was observed for the limestone (64% in laboratory vs. 18% in field, at a 12-hour HRT)
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Phosphorus
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|a 27YLU75U4W
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|a Iron
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|a Calcium Carbonate
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|2 NLM
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|a Pratt, S
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|a Mahmood, B
|e verfasserin
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|a Banker, S
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|a Billings, L
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|a Glenny, S
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|a Luo, D
|e verfasserin
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|i Enthalten in
|t Water science and technology : a journal of the International Association on Water Pollution Research
|d 1986
|g 51(2005), 12 vom: 10., Seite 111-6
|w (DE-627)NLM098149431
|x 0273-1223
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|g volume:51
|g year:2005
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|g day:10
|g pages:111-6
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