carbon
; ground water
; nitric acid derivative
; nitrogen
; waste water
; chemistry
; denitrification
; environmental monitoring
; epidemiology
; halogenation
; Hawaii
; microbiology
; procedures
; waste water
; Carbon Isotopes
; Denitrification
; Environmental Monitoring
; Groundwater
; Halogenation
; Hawaii
; Interrupted Time Series Analysis
; Nitrates
; Nitrogen Isotopes
; Waste Water
Scopus学科分类:
Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要:
We utilize N and C species concentration data along with δ15N values of NO3 −and δ13C values of dissolved inorganic C to evaluate the stoichiometry of biogeochemical reactions (mineralization, nitrification, anammox, and denitrification) occurring within a subsurface wastewater plume that originates as treated wastewater injection and enters the coastal waters of Maui as submarine groundwater discharge. Additionally, we compare wastewater effluent time-series data, injection rates, and treatment history with submarine spring discharge time-series data. We find that heterotrophic denitrification is the primary mechanism of N loss within the groundwater plume and that chlorination for pathogen disinfection suppresses microbial activity in the aquifer responsible for N loss, resulting in increased coastal ocean N loading. Replacement of chlorination with UV disinfection may restore biogeochemical reactions responsible for N loss within the aquifer and return N-attenuating conditions in the effluent plume, reducing N loading to coastal waters. � 2016 Elsevier Ltd
University of Hawai'i at Mānoa, Department of Geology and Geophysics, 1680 East West Road, POST 701, Honolulu, HI, United States; Hawai'i Department of Health, Safe Drinking Water Branch, 919 Ala Moana Boulevard, Honolulu, HI, United States
Recommended Citation:
Fackrell J.K.,Glenn C.R.,Popp B.N.,et al. Wastewater injection, aquifer biogeochemical reactions, and resultant groundwater N fluxes to coastal waters: Kā’anapali, Maui, Hawai'i[J]. Marine Pollution Bulletin,2016-01-01,110(1)