DOI: 10.1016/j.watres.2018.03.059
Scopus记录号: 2-s2.0-85047381309
论文题名: Micropollutants removal and health risk reduction in a water reclamation and ecological reuse system
作者: Ma X.Y. ; Li Q. ; Wang X.C. ; Wang Y. ; Wang D. ; Ngo H.H.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 138 起始页码: 272
结束页码: 281
语种: 英语
英文关键词: Ecological water reuse
; Health risk
; Micropollutants
; Pharmaceutical and personal care products (PPCPs)
; Removal efficiency
Scopus关键词: Adsorption
; Biodegradation
; Biological water treatment
; Bioreactors
; Chemicals removal (water treatment)
; Ecology
; Health
; Health risks
; Lakes
; Pesticides
; Phenols
; Photolysis
; Plants (botany)
; Polycyclic aromatic hydrocarbons
; Risk assessment
; Safety engineering
; Wastewater treatment
; Water conservation
; Water supply
; Biological treatment process
; Micropollutants
; Organic micro-pollutants
; Pharmaceutical and personal care products
; Pharmaceuticals and personal care products
; Polycyclic aromatic hydrocarbons (PAHS)
; Removal efficiencies
; Water reuse
; Wastewater reclamation
; carcinogen
; dichlorvos
; pesticide
; phenol derivative
; polycyclic aromatic hydrocarbon
; dichlorvos
; drug
; pesticide
; phenol derivative
; polycyclic aromatic hydrocarbon
; adsorption
; bioreactor
; efficiency measurement
; health risk
; organic pollutant
; physicochemical property
; pollutant removal
; PPCP
; recycling
; sludge
; water treatment
; adsorption
; anaerobic digestion
; aquatic fauna
; aquatic flora
; Article
; biodegradation
; concentration (parameters)
; ecological procedures
; environmental reclamation
; health hazard
; lake
; landscape
; nonhuman
; persistent organic pollutant
; photolysis
; physical chemistry
; priority journal
; risk reduction
; safety
; sludge
; suspended particulate matter
; volatilization
; waste component removal
; waste water recycling
; water pollutant
; analysis
; bioreactor
; bioremediation
; chemistry
; metabolism
; procedures
; recycling
; risk
; sewage
; water pollutant
; Animalia
; Adsorption
; Biodegradation, Environmental
; Bioreactors
; Dichlorvos
; Lakes
; Pesticides
; Pharmaceutical Preparations
; Phenols
; Polycyclic Aromatic Hydrocarbons
; Recycling
; Risk
; Sewage
; Waste Disposal, Fluid
; Water Pollutants, Chemical
英文摘要: As reclaimed water use is increasing, its safety attracts growing attention, particularly with respect to the health risks associated with the wide range of micropollutants found in the reclaimed water. In this study, sophisticated analysis was conducted for water samples from a water reclamation and ecological reuse system where domestic wastewater was treated using an anaerobic-anoxic-oxic unit followed by a membrane bioreactor (A2O-MBR), and the reclaimed water was used for replenishing a landscape lake. A total of 58 organic micropollutants were detected in the system, consisting of 13 polycyclic aromatic hydrocarbons (PAHs), 16 phenols, 3 pesticides, and 26 pharmaceuticals and personal care products (PPCPs). After treatment by the A2O-MBR process, effective removal of pesticides and phenols was achieved, while when the reclaimed water entered the landscape lake, PPCPs were further removed. From the physicochemical properties of micropollutants, it could be inferred that phenols and dichlorphos (the only pesticide with considerable concentration in the influent) would have been mainly removed by biodegradation and/or volatilization in the biological treatment process. Additionally, it is probable that sludge adsorption also contributed to the removal of dichlorphos. For the predominant PPCP removal in the landscape lake, various actions, such as adsorption, biodegradation, photolysis, and ecologically mediated processes (via aquatic plants and animals), would have played significant roles. However, according to their logKoc, logKow and logD (pH = 8) values, it could be concluded that adsorption by suspended solids might be an important action. Although carcinogenic and non-carcinogenic risks associated with all the detected micropollutants were at negligible levels, the hazard quotients (HQs) of PPCPs accounted for 92.03%–97.23% of the HQTotal. With the significant removal of PPCPs through the ecological processes in the landscape lake, the safety of reclaimed water use could be improved. Therefore, the introduction of ecological unit into the water reclamation and reuse system could be an effective measure for health risk reduction posed by micropollutants. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112793
Appears in Collections: 气候减缓与适应
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作者单位: International Science & Technology Cooperation Center for Urban Alternative Water Resources Development, Key Lab of Northwest Water Resource, Environment and Ecology, MOE, Engineering Technology Research Center for Wastewater Treatment and Reuse, Shaanxi Province, Key Lab of Environmental Engineering, Shaanxi Province, Xi'an University of Architecture and Technology, Xi'an, PR 710055, China; State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, PR 100085, China; School of Civil and Environmental Engineering, Faculty of Engineering and Information Technology, University of Technology Sydney, BroadwayNSW 2007, Australia
Recommended Citation:
Ma X.Y.,Li Q.,Wang X.C.,et al. Micropollutants removal and health risk reduction in a water reclamation and ecological reuse system[J]. Water Research,2018-01-01,138