DOI: 10.1016/j.marpolbul.2016.02.010
Scopus记录号: 2-s2.0-84957899563
论文题名: Changes to nitrate isotopic composition of wastewater treatment effluent and rivers after upgrades to tertiary treatment in the Narragansett Bay watershed, RI
作者: Schmidt C.E. ; Robinson R.S. ; Fields L. ; Nixon S.W.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2016
卷: 104, 期: 2018-01-02 起始页码: 61
结束页码: 69
语种: 英语
英文关键词: Denitrification
; Narragansett Bay
; Nitrate
; Nitrogen and oxygen isotopes
; Tertiary treatment
; Wastewater treatment
Scopus关键词: Denitrification
; Effluent treatment
; Effluents
; Isotopes
; Nitrates
; Nitrogen
; Reclamation
; Reduction
; Rivers
; Wastewater treatment
; Anthropogenic sources
; Isotopic composition
; Narragansett Bay
; Nitrogen and oxygen isotopes
; Stable isotopic compositions
; Temporal variability
; Tertiary treatment
; Wastewater treatment facilities
; Nitrogen removal
; delta nitrogen 15
; delta oxygen 18
; isotope
; nitrate
; unclassified drug
; nitric acid derivative
; nitrogen
; nitrogen oxide
; waste water
; water pollutant
; denitrification
; effluent
; isotopic composition
; nitrate
; nitrogen isotope
; oxygen isotope
; river water
; waste treatment
; wastewater
; water treatment
; Article
; concentration (parameters)
; controlled study
; denitrification
; effluent
; limit of detection
; limit of quantitation
; quality control
; river
; United States
; waste water management
; watershed
; analysis
; bay
; chemistry
; environmental monitoring
; Rhode Island
; river
; waste water
; water pollutant
; Narragansett Bay
; Rhode Island
; United States
; Bays
; Denitrification
; Environmental Monitoring
; Nitrates
; Nitrogen
; Nitrogen Isotopes
; Nitrogen Oxides
; Rhode Island
; Rivers
; Waste Water
; Water Pollutants, Chemical
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: Due to nitrogen load reduction policies, wastewater treatment facilities (WWTFs) have upgraded to tertiary treatment - where denitrification reduces and removes nitrogen. Changes to the stable isotopic composition of nitrate inputs after upgrades or how it transfers to the estuary have not been assessed in Rhode Island. We investigate whether these upgrades impact the isotopic signature of nitrate inputs to Narragansett Bay. Samples from rivers and WWTFs discharging to Narragansett Bay characterize the anthropogenic source nitrate (NO3-) isotopic composition (δ15N-NO3- and δ18O-NO3-) and temporal variability. At one WWTF, tertiary treatment increased effluent nitrate δ15N-NO3- and δ18O-NO3- values by ~16‰. Riverine values increased by ~4‰, likely due to the combination of decreases in N and upgrades. Combined river and WWTF flux-weighted isotopic compositions showed enriched values and an amplitude reduction in monthly variability. When seasonal isotopic means are significantly different from other sources, δ15N-NO3- may be a useful tracer of inputs. © 2016 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/87183
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
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作者单位: University of Rhode Island, Graduate School of Oceanography, South Ferry Road, Narragansett, RI, United States; University of Georgia, Department of Marine Sciences, 325 Sanford Drive, Athens, GA, United States
Recommended Citation:
Schmidt C.E.,Robinson R.S.,Fields L.,et al. Changes to nitrate isotopic composition of wastewater treatment effluent and rivers after upgrades to tertiary treatment in the Narragansett Bay watershed, RI[J]. Marine Pollution Bulletin,2016-01-01,104(2018-01-02)