Document Detail


Water quality improvement through bioretention media: nitrogen and phosphorus removal.
MedLine Citation:
PMID:  16629269     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
High nutrient inputs and eutrophication continue to be one of the highest priority water quality problems. Bioretention is a low-impact development technology that has been advocated for use in urban and other developed areas. This work provides an in-depth analysis on removal of nutrients from a synthetic stormwater runoff by bioretention. Results have indicated good removal of phosphorus (70 to 85%) and total Kjeldahl nitrogen (55 to 65%). Nitrate reduction was poor (< 20%) and, in several cases, nitrate production was noted. Variations in flowrate (intensity) and duration had a moderate affect on nutrient removal. Mass balances demonstrate the importance of water attenuation in the facility in reducing mass nutrient loads. Captured nitrogen can be converted to nitrate between storm events and subsequently washed from the system. Analysis on the fate of nutrients in bioretention suggests that accumulation of phosphorus and nitrogen may be controlled by carefully managing growing and harvesting of vegetation.
Authors:
Allen P Davis; Mohammad Shokouhian; Himanshu Sharma; Christie Minami
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Water environment research : a research publication of the Water Environment Federation     Volume:  78     ISSN:  1061-4303     ISO Abbreviation:  Water Environ. Res.     Publication Date:  2006 Mar 
Date Detail:
Created Date:  2006-04-24     Completed Date:  2006-07-13     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9886167     Medline TA:  Water Environ Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  284-93     Citation Subset:  IM    
Affiliation:
Department of Civil and Environmental Engineering, Maryland Water Resources Research Center, University of Maryland, College Park 20742, USA. apdavis@umd.edu
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MeSH Terms
Descriptor/Qualifier:
Agriculture
Ecosystem
Environmental Monitoring
Eutrophication
Fertilizers
Nitrates / analysis
Nitrogen / isolation & purification*
Phosphorus / isolation & purification*
Rain
Water Movements
Water Pollutants, Chemical / isolation & purification*
Water Purification / methods*
Water Supply*
Chemical
Reg. No./Substance:
0/Fertilizers; 0/Nitrates; 0/Water Pollutants, Chemical; 7723-14-0/Phosphorus; 7727-37-9/Nitrogen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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