DOI: 10.1016/j.watres.2018.12.046
Scopus记录号: 2-s2.0-85059824349
论文题名: Chronic effects of brine discharge form large-scale seawater reverse osmosis desalination facilities on benthic bacteria
作者: Frank H. ; Fussmann K.E. ; Rahav E. ; Bar Zeev E.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 478
结束页码: 487
语种: 英语
英文关键词: Brine discharge method
; Brine effluent
; Environmental impact
; Heterotrophic bacteria
; SWRO desalination
Scopus关键词: Biodegradation
; Decision making
; Desalination
; Discharge (fluid mechanics)
; Effluents
; Environmental impact
; Eutrophication
; Outfalls
; Reverse osmosis
; Seawater effects
; Temperature
; Bacterial community structure
; Bacterial growth efficiencies
; Brine discharge
; Community composition
; Desalination facilities
; Heterotrophic bacterias
; Seawater desalination facility
; Seawater reverse osmosis
; Bacteria
; abundance
; bacterium
; benthos
; biodegradation
; brine
; coastal zone
; community composition
; community structure
; desalination
; discharge
; ecological impact
; effluent
; environmental impact
; growth
; microbial activity
; reverse osmosis
; seafloor
; seawater
; Article
; bacterial growth
; bacterium
; benthos
; desalination
; dispersion
; effluent
; environmental impact
; eutrophication
; microbial community
; nonhuman
; nutrient cycling
; priority journal
; reverse osmosis
; salinity
; water temperature
; Ashkelon
; Hadera
; Haifa [Israel]
; Israel
; Southern District
; Bacteria (microorganisms)
英文摘要: Seawater desalination facilities continuously discharge hyper-saline brine into the coastal environment which often flows as a concentrated plume over the seafloor, hence possibly impacting benthic microorganisms. Yet, the effects of brine discharge from desalination plants on benthic bacteria, key players in biodegradation of organic material and nutrient recycling is unknown. In this study, we tested the chronic (years) effects of brine discharge from three large-scale desalination facilities on the abundance, metabolic activity and community composition of benthic bacteria. To this end, four sampling campaigns were carried at the outfall areas of the Ashkelon, Sorek and Hadera desalination facilities. The effects of the brine were compared to corresponding reference stations which were not influenced by the brine (i.e., water temperature and salinity). Our sampling data indicate that bacterial abundance and activity that includes bacterial growth efficiency were 1.3–2.6-fold higher at the outfall area than the reference station. Concomitant analysis pointed out that the bacterial community structure at the brine discharge area was also different than the reference station, yet varied between each desalination facility. Our results demonstrate that the impact of brine effluent from desalination facilities on benthic bacteria are site-specific and localized (<1.4 Km2) around the discharge point. Namely, that the effects on benthic bacteria are prominent at the brine mixing zone and change according to the discharge method used to disperse the brine as well as local stressors (e.g., eutrophication and elevated water temperature). Our results contribute new insights on the effects of desalination-brine to benthic microbes, while providing scientifically-based aspects on the ecological impacts of brine dispersion for decision makers. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122029
Appears in Collections: 气候变化事实与影响
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作者单位: Zuckerberg Institute for Water Research (ZIWR), The Jacob Blaustein Institutes for Desert Research (BIDR) Ben-Gurion University of the Negev84990, Israel; Israel Oceanographic and Limnological Research, National Institute of Oceanography, Haifa, 8030, Israel
Recommended Citation:
Frank H.,Fussmann K.E.,Rahav E.,et al. Chronic effects of brine discharge form large-scale seawater reverse osmosis desalination facilities on benthic bacteria[J]. Water Research,2019-01-01