DOI: 10.1016/j.watres.2018.06.043
Scopus记录号: 2-s2.0-85049347933
论文题名: Acceleration of saturated porous media clogging and silicon dissolution due to low concentrations of Al(III) in the recharge of reclaimed water
作者: Cui X. ; Chen C. ; Sun S. ; Zhou D. ; Ndayisenga F. ; Huo M. ; Zhu S. ; Zhang L. ; Crittenden J.C.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 143 起始页码: 136
结束页码: 145
语种: 英语
英文关键词: Al-coagulant
; Biomass
; Clogging
; Quartz sand dissolving
; Recharge
Scopus关键词: Aquifers
; Bacteria
; Biomass
; Coagulation
; Dissolution
; Groundwater resources
; Porous materials
; Porous silicon
; Potable water
; Quartz
; Recharging (underground waters)
; Reclamation
; Sand
; Silicon
; Silicon oxides
; Water quality
; Water treatment
; Clogging
; Drinking water standards
; Extra-cellular polymeric substances
; Kinetic coefficient
; Quartz sand
; Recharge
; Saturated porous media
; Water quality deterioration
; Aluminum compounds
; aluminum
; drinking water
; silicon dioxide
; water
; aluminum
; aquifer
; biomass
; coagulation
; concentration (composition)
; dissolution
; pollutant transport
; polymer
; porous medium
; recharge
; silicon
; water quality
; water treatment
; aquifer
; Article
; bacterial cell
; bacterium
; biomass production
; Bosea
; China
; concentration (parameters)
; controlled study
; dissolution
; Holosporaceae
; hydraulic conductivity
; kinetics
; nonhuman
; polymerization
; precipitation
; priority journal
; Rhizobiaceae
; sand
; water quality
; China
英文摘要: The recharge of reclaimed water is an effective strategy for addressing the issues of water quality deterioration and groundwater level decline simultaneously. Residual Al coagulants are normally remained in the recovered water at low concentrations, and may induce clogging problems during the recharging process. However, this issue has been ignored in the past. In this study, we investigated the mechanisms of Al(III)-induced aquifer bio-clogging, the role of Al(III) in quartz sand media (SiO2) dissolution and re-precipitation in the series of aquifer columns. We determined that Al(III) resulted in serious clogging in ∼140 h at low concentrations that satisfied the national drinking water standard of China. The corresponding hydraulic conductivity decreased by more than ∼90% in the bacteria-containing aquifer, which was ∼30% greater than that for the bacteria-free trials. The enhanced Al(III)-related clogging was caused by modifying quartz sand to form Si-O-Al(OH)n and improving microbes attachment. Microbes retention kinetic coefficients (k) of the Al recharged simulated aquifer could increase by 3.0–8.3 times. The Al(III) also enhanced biomass production and clogging by binding to microbial extracellular polymeric substances. In turn, the greater amount of biomass accelerated the Si dissolution and re-precipitation, this may potentially damage the stability of aquifer structure. The results showed that reclaimed water treated with Al coagulation should be employed with caution for recharging. © 2018 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112597
Appears in Collections: 气候减缓与适应
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作者单位: School of Environment, Northeast Normal University, Changchun, 130117, China; Jilin Engineering Lab for Water Pollution Control and Resources Recovery, Northeast Normal University, Changchun, 130117, China; Brook Byers Institute for Sustainable Systems, Georgia Institute of Technology, Atlanta, GA 30332, United States; School of Civil & Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States
Recommended Citation:
Cui X.,Chen C.,Sun S.,et al. Acceleration of saturated porous media clogging and silicon dissolution due to low concentrations of Al(III) in the recharge of reclaimed water[J]. Water Research,2018-01-01,143