DOI: 10.1016/j.watres.2018.08.063
Scopus记录号: 2-s2.0-85052652118
论文题名: Purity and mechanical strength of naturally frozen ice in wastewater basins
作者: John M. ; Suominen M. ; Sormunen O.-V. ; Hasan M. ; Kurvinen E. ; Kujala P. ; Mikkola A. ; Louhi-Kultanen M.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 145 起始页码: 418
结束页码: 428
语种: 英语
英文关键词: Compressive strength
; Flexural strength
; Ice impurity
; Natural freezing
; Wastewater treatment
Scopus关键词: Bending strength
; Compressive strength
; Freezing
; Impurities
; Removal
; Solutions
; Wastewater treatment
; Water pollution
; Contaminated water
; Freeze crystallization
; Fresh water lakes
; Harvesting devices
; In-situ measurement
; Separation efficiency
; Wastewater purification
; Water constituents
; Ice
; aqueous solution
; compressive strength
; crystallization
; freezing
; freshwater environment
; growth
; ice cover
; in situ measurement
; peatland
; wastewater treatment
英文摘要: A fairly clean ice cover can form over a contaminated water pond when the air-cooled surface of water freezes and impurities are efficiently expelled to the remaining water underneath. Natural freeze crystallization has recently been studied as a potential wastewater purification method with aqueous solutions on a laboratory scale. The effect of impurity inclusions on ice strength has been researched in model ice basins over the past few decades. It is of interest to discover how efficiently natural freeze separation works under real weather conditions before freezing can be utilized for wastewater treatment application. Herein, understanding the mechanical strength properties of naturally frozen wastewater (ice) is important when planning ice breaking and harvesting devices. This research implemented in-situ measurements of the flexural and compressive strength of ice in natural ice-covered environments of a freshwater lake, two peatlands and three mining site basins, and compares the determined strength with analyzed impurities of the ice. The results showed that despite varying ice growth conditions and initial water constituents, it was possible to deduce an evident yet simple relationship between mean ice strength and ice impurities: the more impure the ice is, the lower the value of strength is Based on this exploration, it was concluded that separation efficiencies, i.e. the impurity removal ratio between basin water and ice, from 65% up to 90% can be achieved by natural freezing. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112427
Appears in Collections: 气候减缓与适应
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作者单位: Department of Separation and Purification Technology, LUT School of Engineering Science, Lappeenranta University of Technology, P.O. Box 20, Lappeenranta, FI-53850, Finland; Department of Mechanical Engineering, School of Engineering, Aalto University, P.O. Box 15300, Aalto, FI-00076, Finland; Department of Mechanical Engineering, LUT School of Energy Systems, Lappeenranta University of Technology, P.O. Box 20, Lappeenranta, FI-53850, Finland; Department of Chemical and Metallurgical Engineering, School of Chemical Engineering, Aalto University, P.O. Box 16100, Aalto, FI-00076, Finland
Recommended Citation:
John M.,Suominen M.,Sormunen O.-V.,et al. Purity and mechanical strength of naturally frozen ice in wastewater basins[J]. Water Research,2018-01-01,145