DOI: 10.1016/j.marpolbul.2016.07.019
Scopus记录号: 2-s2.0-84979270711
论文题名: Variations in nitrate isotope composition of wastewater effluents by treatment type in Hong Kong
作者: Archana A. ; Li L. ; Shuh-Ji K. ; Thibodeau B. ; Baker D.M.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2016
卷: 111, 期: 2018-01-02 起始页码: 143
结束页码: 152
语种: 英语
英文关键词: Hong Kong
; Mass balance
; Nitrogen pollution
; Sewage
; Stable isotope
; Wastewater treatment
Scopus关键词: Effluents
; Eutrophication
; Isotopes
; Nitrates
; Nitrogen
; Nitrogen oxides
; Pollution
; Seawater
; Sewage
; Sewage treatment
; Sewage treatment plants
; Wastewater treatment
; Hong-kong
; Mass balance
; Mass balance model
; Nitrogen pollution
; Nutrient concentrations
; Stable isotopes
; Tertiary treatment
; Wastewater effluents
; Nitrogen removal
; ammonia
; nitrate
; nitrite
; nitrogen 15
; oxygen 18
; phosphate
; nitric acid derivative
; nitrogen
; sea water
; waste water
; water pollutant
; effluent
; isotopic composition
; marine pollution
; mass balance
; nitrate
; pollutant source
; sewage
; stable isotope
; wastewater treatment
; Article
; chemical composition
; concentration (parameters)
; controlled study
; effluent
; Hong Kong
; radioactive contamination
; sea pollution
; sewage treatment
; urbanization
; waste component removal
; environmental monitoring
; waste water
; water pollutant
; China
; Hong Kong
; New Territories
; Tolo Harbour
; Environmental Monitoring
; Hong Kong
; Nitrates
; Nitrogen Isotopes
; Seawater
; 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: Stable isotopes (δ15N, δ18O) can serve as tracers for sources of nitrogen in the receiving environment. Hong Kong discharges ~ 3 × 106 m3 d− 1 of treated wastewater into the ocean from 68 facilities implementing preliminary to tertiary treatment. We sampled treated sewage from 18 plants across 5 treatment types and examined receiving seawater from northeast Hong Kong. We analyzed nitrate and nitrite (NO3 − + NO2 −, hereafter NOx) ammonium (NH4 +), phosphate (PO4 +) concentrations and δ15NNOx, δ18ONOx. Sewage effluents contained high mean nutrient concentrations (NO3 − = 260 μmol L− 1, NH4 + = 1400 μmol L− 1, PO4 + = 50 μmol L− 1) with some indication of nitrogen removal in advanced treatment types. Mean δ15NNOx of sewage effluents from all plants and treatment types (12‰) was higher than natural sources and varied spatially and seasonally. There was no overall effect of sewage treatment type on δ15NNOx. A mass balance model indicated that sewage (> 68%) remains a dominant source of nitrate pollution in seawater in Tolo Harbor. © 2016 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/86715
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: School of Biological Sciences, University of Hong Kong, Pok Fu Lam, Hong Kong; Swire Institute of Marine Science, University of Hong Kong, Cape D'Aguilar, Hong Kong; State Key Laboratory of Marine Environmental Science, Xiamen University, China; Department of Earth Sciences, University of Hong Kong, Pok Fu Lam, Hong Kong
Recommended Citation:
Archana A.,Li L.,Shuh-Ji K.,et al. Variations in nitrate isotope composition of wastewater effluents by treatment type in Hong Kong[J]. Marine Pollution Bulletin,2016-01-01,111(2018-01-02)