DOI: 10.1016/j.watres.2018.04.040
Scopus记录号: 2-s2.0-85047461250
论文题名: The fate of polar trace organic compounds in the hyporheic zone
作者: Schaper J.L. ; Seher W. ; Nützmann G. ; Putschew A. ; Jekel M. ; Lewandowski J.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 140 起始页码: 158
结束页码: 166
语种: 英语
英文关键词: Biotransformation
; Organic micropollutants
; Pharmaceuticals
; Removal efficiency
; Urban water cycle
Scopus关键词: Biogeochemistry
; Biological water treatment
; Drug products
; Efficiency
; Effluent treatment
; Groundwater
; Organic compounds
; Oxic sediments
; Potable water
; Rate constants
; Stream flow
; Wastewater treatment
; Biotransformation
; Concentration-depth profile
; Organic micro-pollutants
; Removal efficiencies
; Site specific characteristics
; Temperature depth profiles
; Urban waters
; Wastewater treatment plant effluent
; Effluents
; drinking water
; gabapentin
; ground water
; iron
; manganese
; organic compound
; primidone
; organic compound
; biogeochemistry
; biotransformation
; concentration (composition)
; drinking water
; drug
; effluent
; hyporheic zone
; lotic environment
; organic compound
; pollutant removal
; redox conditions
; river water
; trace element
; advection
; Article
; biogeochemical cycling
; ecosystem
; effluent
; environmental impact
; Germany
; half life time
; hydrology
; oxidation reduction reaction
; pollution transport
; priority journal
; sediment
; stream (river)
; temperature dependence
; urban area
; waste component removal
; waste water treatment plant
; water analysis
; water sampling
; analysis
; chemistry
; denitrification
; procedures
; river
; sewage
; waste water
; water pollutant
; Berlin
; Germany
; Berlin
; Denitrification
; Groundwater
; Half-Life
; Organic Chemicals
; Rivers
; Waste Disposal, Fluid
; Waste Water
; Water Pollutants, Chemical
英文摘要: The hyporheic zone (HZ) is often considered to efficiently remove polar trace organic compounds (TrOCs) from lotic systems, mitigating potential adverse effects of TrOCs on ecosystem functioning and drinking water production. Predicting the fate of TrOCs in the hyporheic zone (HZ) is difficult as the in-situ removal rate constants are not known and the biogeochemical factors as well as hydrological conditions controlling the removal efficiency are not fully understood. To determine the in-situ removal efficiency of the HZ for a variety of TrOCs as a function of the biogeochemical milieu, we conducted a field study in an urban river near Berlin, Germany. Subsurface flow was studied by time series of temperature depth profiles and the biogeochemical milieu of the HZ by concentration depth profiles. These results, in conjunction with a 1D advection-dispersion transport model, were used to calculate first-order removal rate constants of several polar TrOCs in the HZ. For the majority of TrOCs investigated, removal rate constants were strongly dependent on redox conditions, with significantly higher removal rates observed under predominantly suboxic (i.e. denitrifying) compared to anoxic (i.e. Fe and Mn reducing) conditions. Compared to previous studies on the fate of TrOCs in saturated sediments, half-lives within oxic/suboxic sections of the HZ were relatively low, attributable to the site-specific characteristics of the HZ in a stream dominated by wastewater treatment plant effluent. For nine out of thirteen investigated TrOCs, concentrations decreased significantly in the HZ with relative removal percentages ranging from 32% for primidone to 77% for gabapentin. For many TrOCs, removal efficiency decreased drastically as redox conditions became anoxic. For the majority of compounds investigated here, the HZ indeed acts as an efficient bioreactor that is capable of removing TrOCs along relatively short flow paths. Depending on the TrOC, removal capacity may be enhanced by either increasing the magnitude of groundwater-surface exchange fluxes, by increasing the total residence time in the HZ or the exposure time to suboxic zones, respectively. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112721
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Department Ecohydrology, Müggelseedamm 310, Berlin, 12587, Germany; Technical University of Berlin, Chair of Water Quality Engineering, Strasse des 17. Juni 135, Berlin, 10623, Germany; Humboldt University Berlin, Geography Department, Rudower Chaussee 16, Berlin, 12489, Germany
Recommended Citation:
Schaper J.L.,Seher W.,Nützmann G.,et al. The fate of polar trace organic compounds in the hyporheic zone[J]. Water Research,2018-01-01,140