A CFD model for prediction of critical electric potential preventing membrane fouling in oily waste water treatment

2017 ◽  
Vol 539 ◽  
pp. 320-328 ◽  
Author(s):  
Maryam Abbasi Monfared ◽  
Norollah Kasiri ◽  
Toraj Mohammadi
1999 ◽  
Vol 46 (4) ◽  
pp. 220-229
Author(s):  
Takahiro KAWAKATSU ◽  
Masamichi NAKAJIMA ◽  
Sousaku ICHIKAWA ◽  
Hiroshi NABETANI ◽  
Mitsutoshi NAKAJIMA

Author(s):  
V. А. Kozachyna ◽  
O. V. Hromova ◽  
O. Y. Hunko ◽  
L. H. Tatarko

2011 ◽  
pp. 12-1-12-14
Author(s):  
P T Cardew ◽  
M S le

1969 ◽  
Vol 4 (1) ◽  
pp. 83-116
Author(s):  
Donald R. Woods ◽  
Kenneth A. Burrill

Abstract The separation of dispersed oil from water requires that the dispersed oil drops move to and coalesce at the oil-water interface. Normally the coalescence step of this separational process as applied to waste water treatment is neglected because the time for coalescence to occur is short relative to the migration time. Indeed, in the API design of oil skimmers (API 1963) the coalescence time and the thickness of the oil layer are both neglected. Nevertheless, some conditions when coalescence is important for waste treatment are: 1.in the design and operation of decanters upstream of the waste treatment process. The effectiveness of these dictate the complexity of the waste water treatment.2.in solvent extraction methods for treating stable dispersions of oily waste water. Such a method has been successfully developed to treat the oily waste from rolling mills in steel companies (Woods and Zirimenya (1968 ff) ).3.when concentrated, stable emulsions are the waste.4.when space is at a premium (Woods (1968), Shackleton et al (1960) and Douglas and Elliott (1961)). Our knowledge of coalescence in liquid-liquid systems is limited and often contradictory. Consider first some background on what we know about coalescence. Then, we describe an experimental technique and recent results on the coalescence of single drops at a planar interface.


2006 ◽  
Vol 314 ◽  
pp. 257-262
Author(s):  
G. Falk

In this paper results of electrophoretically activated processes for domestic wastewater treatment in lab and field scale experiments are presented. The principal mechanisms of non-membrane and membrane based electrokinetic solid liquid separation by electrophoresis are described. In the case of non-membrane based electrokinetic wastewater treatment a modular processing scheme is suggested in order to achieve economically and ecologically suitable processing conditions based on colloidal wastewater characteristics. In the case of membrane based electrokinetic waste water treatment an effective anti-membrane fouling process is designed controlled by colloidal characteristics of the wastewater, especially zetapotential, as well as external field parameters and microfiltration module geometries. The specific energy input of the membrane based and non-membrane based electrophoretic waste water treatment methodologies are compared and future perspectives of electrokinetic activated waste water purification processes are proposed.


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