E. coli removal in laboratory scale stormwater biofilters: Influence of vegetation and submerged zone

被引:77
作者
Chandrasena, G. I. [1 ,2 ]
Pham, T. [3 ]
Payne, E. G. [3 ]
Deletic, A. [1 ,2 ]
McCarthy, D. T. [1 ,2 ]
机构
[1] Monash Univ, Monash Water Liveabil, Dept Civil Engn, Clayton, Vic 3800, Australia
[2] CRC Water Sensit Cities, Melbourne, Vic 3800, Australia
[3] Monash Univ, Dept Civil Engn, Clayton, Vic 3800, Australia
基金
澳大利亚研究理事会;
关键词
Biofiltration; E; coli; Stormwater; Submerged zone; Vegetation; TOTAL SUSPENDED-SOLIDS; ESCHERICHIA-COLI; BIOFILTRATION SYSTEMS; BIORETENTION MEDIA; POLLUTANT REMOVAL; NORTH-CAROLINA; URBAN RUNOFF; PERFORMANCE; WATER; MANAGEMENT;
D O I
10.1016/j.jhydrol.2014.08.015
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Biofilters, also known as bioretention areas or raingardens, are an effective treatment option for the removal of various pollutants from stormwater. However, they show variable treatment efficiency for the removal of indicator bacteria, and the operational and design factors which impact this variability are largely unknown. This study uses a laboratory scale column set-up to explore how Escherichia coli (the chosen indicator organism) removal in the stormwater biofilters is impacted by: plant presence and species type, the presence of a submerged zone (SZ), and operational conditions (duration of dry periods and changes over the initial stages of the system's life-span). Vegetation selection was found to be important for E. coli removal and the highly performing plant species were associated with lower infiltration rates. Based on the current results, a biofilter planted with Leptospermum continentale, Melaleuca incana or Palmetto buffalo and comprising a SZ can be recommended for improved E. coli removal. Inclusion of SZ was found to generally enhance the removal performance; which may be explained by the contribution of microbial processes that are happening within the SZ (such as predation/competition and natural die-off). Results also suggest that the E. coli removal performance is reduced after a significant dry period, while the overall removal performance improves over time as systems mature. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:814 / 822
页数:9
相关论文
共 38 条
[21]   Hydraulic performance of biofilter systems for stormwater management: Influences of design and operation [J].
Le Coustumer, Sebastien ;
Fletcher, Tim D. ;
Deletic, Ana ;
Barraud, Sylvie ;
Lewis, Justin F. .
JOURNAL OF HYDROLOGY, 2009, 376 (1-2) :16-23
[22]   Removal of Clostridium perfringens, Escherichia coli and F-RNA coliphages by stormwater biofilters [J].
Li, Ya L. ;
Deletic, Ana ;
Alcazar, Lucie ;
Bratieres, Katia ;
Fletcher, Tim D. ;
McCarthy, David T. .
ECOLOGICAL ENGINEERING, 2012, 49 :137-145
[23]   Uncertainties in stormwater E. coli levels [J].
McCarthy, D. T. ;
Deletic, A. ;
Mitchell, V. G. ;
Fletcher, T. D. ;
Diaper, C. .
WATER RESEARCH, 2008, 42 (6-7) :1812-1824
[24]   Intra-event variability of Escherichia coli and total suspended solids in urban stormwater runoff [J].
McCarthy, D. T. ;
Hathaway, J. M. ;
Hunt, W. F. ;
Deletic, A. .
WATER RESEARCH, 2012, 46 (20) :6661-6670
[25]  
Mukerji K.G., 2006, MICROBIAL ACTIVITY R
[26]   Phreatophytic vegetation and groundwater fluctuations: A review of current research and application of ecosystem response modeling with an emphasis on Great Basin vegetation [J].
Naumburg, E ;
Mata-Gonzalez, R ;
Hunter, RG ;
Mclendon, T ;
Martin, DW .
ENVIRONMENTAL MANAGEMENT, 2005, 35 (06) :726-740
[27]  
NHMRC, 2009, AUSTR GUID WAT REC P
[28]  
Pham T., 2012, The influence of vegetation in stormwater biofilters on infiltration and nitrogen removal: Preliminary findings, P145
[29]   Variation among plant species on pollutant removal from stormwater non biofiltration systems [J].
Read, Jennifer ;
Wevill, Tricia ;
Fletcher, Tim ;
Deletic, Ana .
WATER RESEARCH, 2008, 42 (4-5) :893-902
[30]   Plant Traits that Enhance Pollutant Removal from Stormwater in Biofiltration Systems [J].
Read, Jennifer ;
Fletcher, Tim D. ;
Wevill, Tricia ;
Deletic, Ana .
INTERNATIONAL JOURNAL OF PHYTOREMEDIATION, 2010, 12 (01) :34-53