DOI: 10.1016/j.watres.2017.12.001
Scopus记录号: 2-s2.0-85038083896
论文题名: A critical review on liquid-gas mass transfer models for estimating gaseous emissions from passive liquid surfaces in wastewater treatment plants
作者: Prata A.A. ; Jr. ; Santos J.M. ; Timchenko V. ; Stuetz R.M.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 130 起始页码: 388
结束页码: 406
语种: 英语
英文关键词: Emission models
; Liquid surfaces
; Odorous emissions
; Wastewater
Scopus关键词: Boundary layer flow
; Boundary layers
; Environmental impact
; Environmental Protection Agency
; Gas emissions
; Gas plants
; Liquefied gases
; Sewage pumping plants
; Wastewater
; Wastewater treatment
; Water treatment plants
; Emission model
; Empirical correlations
; Liquid surface
; Microscale wave breaking
; North Carolina , USA
; Odorous emissions
; Turbulent boundary layers
; Wastewater treatment plants
; Mass transfer
; boundary layer
; data set
; emission
; empirical analysis
; environmental impact
; estimation method
; experimental study
; liquid limit
; mass transfer
; odor
; performance assessment
; turbulent boundary layer
; wastewater treatment plant
; atmospheric dispersion
; gas transport
; liquid
; mathematical model
; priority journal
; Review
; surface property
; theoretical model
; waste water treatment plant
; water vapor
; air pollutant
; analysis
; environmental monitoring
; gas
; procedures
; sewage
; theoretical model
; wind
; North Carolina
; United States
; fragrance
; Air Pollutants
; Environmental Monitoring
; Gases
; Models, Theoretical
; Odorants
; Waste Disposal, Fluid
; Wind
英文摘要: Emission models are useful tools for the study and management of atmospheric emissions from passive liquid surfaces in wastewater treatment plants (WWTPs), which are potential sources of odour nuisance and other environmental impacts. In this work, different theoretical and empirical models for the gas-side (kG) and liquid-side (kL) mass transfer coefficients in passive surfaces in WWTPs were critically reviewed and evaluated against experimental data. Wind forcing and the development of the wind-wave field, especially the occurrence of microscale wave breaking, were identified as the most important physical factors affecting mass transfer in these situations. Two approaches performed well in describing the available data for kG for water vapour. One is an empirical correlation whilst the other consists of theoretical models based on the description of the inner part of the turbulent boundary layer over a smooth flat plate. We also fit to the experimental data set a new, alternate equation for kG, whose performance was comparable to existing ones. However, these three approaches do not agree with each other in the whole range of Schmidt numbers typical for compounds found in emissions from WWTPs. As to kL, no model was able to satisfactorily explain the behaviour and the scatter observed in the whole experimental data set. Excluding two suspected biased sources, the WATER9 (US EPA, 1994. Air Emission Models for Waste and Wastewater. North Carolina, USA. EPA-453/R-94–080A) approach produced the best results among the most commonly used kL models, although still with considerably high relative errors. For this same sub-set, we propose a new, alternate approach for estimating kL, which resulted in improved performance, particularly for longer fetches. Two main gaps were found in the literature, the understanding of the evolution of the mass transfer boundary layer over liquid surfaces, and the behaviour of kL for larger fetches, especially in the range from 40 to 60 m. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113055
Appears in Collections: 气候减缓与适应
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作者单位: UNSW Water Research Centre, School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW 2052, Australia; Department of Environmental Engineering, Universidade Federal do Espírito Santo, Av. Fernando Ferrari 514, Vitória, ES 29.060-970, Brazil; School of Mechanical and Manufacturing Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
Recommended Citation:
Prata A.A.,Jr.,Santos J.M.,et al. A critical review on liquid-gas mass transfer models for estimating gaseous emissions from passive liquid surfaces in wastewater treatment plants[J]. Water Research,2018-01-01,130