Influence of Electrokinetic Phenomena on the Mass Transfer of Electrofiltration Disinfection of Water
Вackground. The development of a method for increasing the efficiency of an installation for electrochemical water disinfection.
Оbjective. The aim of the paper is the study of the influence of electrokinetic phenomena on the mass transfer in a system with a charged porous diaphragm, aimed at determining the conditions that allow increasing the efficiency of the process of electrofiltration water disinfection while maintaining the parameters of its conduct and ensuring the necessary degree of decontamination.
Methods. The determination of the efficiency of the microporous filter element in various ways of organizing the electrofiltration process is conducted.
Results. The efficiency of the microporous charged element depends on the location of the cathode and the anode, which determines the direction of the electroosmosis with respect to the flow of the treated water. Increasing the strength of the electric field while maintaining the value of the operating pressure leads to an intensification of the processes affecting the efficiency.Conclusions. The location of electrodes, which ensures the counter motion of the hydrodynamic flow of the treated water and the electroosmotic flow occurring in the pores of the charged diaphragm, allows substantially increasing the productivity of the disinfection process.
Full Text:PDF (Русский)
Y. Li et al., “Two-step chlorination: A new approach to disinfection of a primary sewage effluent”, Water Res., vol. 108, pp. 339–347, 2017. doi: 10.1016/j.watres.2016.11.019
S. Van Haute et al., “Wash water disinfection of a full-scale leafy vegetables washing process with hydrogen peroxide and the use of a commercial metal ion mixture to improve disinfection efficiency”, Food Control, vol. 50, pp. 173–183, 2015. doi: 10.1016/j.foodcont.2014.08.028
H. Zou and L. Wang, “The disinfection effect of a novel continuous-flow water sterilizing system coupling dual-frequency ultrasound with sodium hypochlorite in pilot scale”, Ultrason. Sonochem., vol. 36, pp. 246–252, 2017. doi: 10.1016/j.ultsonch.2016.11.041
L. Latrach et al., “Domestic wastewater disinfection by combined treatment using multi-soil-layering system and sand filters (MSL–SF): A laboratory pilot study”, Ecol. Eng., vol. 91, pp. 294–301, 2016. doi: 10.1016/j.ecoleng.2016.02.036
M.C. Cruz et al., “Statistical approaches to understanding the impact of matrix composition on the disinfection of water by ultrafiltration”, Chem. Eng. J., vol. 316, pp. 305–314, 2017. doi: 10.1016/j.cej.2017.01.081
S. Chen et al., “Electrochemical disinfection of simulated ballast water on PbO2/graphite felt electrode”, Mar. Pollut. Bull., vol. 105, no. 1, pp. 319–323, 2016. doi: 10.1016/j.marpolbul.2016.02.003
C.E. Schaefer et al., “Assessment of disinfection and by-product formation during electrochemical treatment of surface water using a Ti/IrO2 anode”, Chem. Eng. J., vol. 264, pp. 411–416, 2015. doi: 10.1016/j.cej.2014.11.082
X. Zhou et al., “Influence of ultrasound enhancement on chlorine dioxide consumption and disinfection by-products formation for secondary effluents disinfection”, Ultrason. Sonochem., vol. 28, pp. 376–381, 2016. doi: 10.1016/j.ultsonch.2015.08.017
O.S. Savluk, “Intensification of the antimicrobial effect of disinfectants in the electric field”, in Nauchnyye Trudy Vsesoyuznogo Soveshchaniya “Gigiyenicheskiye Voprosy Opresneniya Vody”, Moscow, SU, 1981, pp. 33–35 (in Russian).
J.J. Simonis and A.K. Basson, “Manufacturing a low-cost ceramic water filter and filter system for the elimination of com-mon pathogenic bacteria”, Phys. Chem. Earth, vol. 50-52, pp. 269–276, 2012. doi: 10.1016/j.pce.2012.05.001
S.Yu. Bashtan et al., “Effect of sodium chloride quality on the parameters of the electrochemical synthesis process of sodium hypochlorite”, J. Water Chem. Technol., vol. 23, no. 4, pp. 364–370, 2001 (in Russian).
V.V. Goncharuk et al., “Electrochemical disinfection of sea water in a swimming pool”, J. Water Chem. Technol., vol. 25, no. 4, pp. 334–341, 2003 (in Russian).
H.E. Kubitschek, “Cell volume increase in Escherichia coli after shifts to richer media”, J. Bacteriol., vol. 172, no. 1, pp. 94–101, 1990.
V.V. Goncharuk et al., “Water disinfection method”, UA Patent 74083, Oct. 17, 2005 (in Ukrainian).
M. Kosmulski, “pH-dependent surface charging and points of zero charge. IV. Update and new approach”, J. Colloid Interface Sci., vol. 337, no. 2, pp. 439–448, 2009. doi: 10.1016/j.jcis.2009.04.072
L.G. Loitsyanskii, Mechanics of Liquids and Gases. Moscow, SU: Gostekhizdat, 1950 (in Russian).
N.A. Mishchuk et al. “Non-stationary electro-osmotic flow in closed cylindrical capillaries. Theory and experiment”, J. Colloid Interface Sci, vol. 309, pp. 308–314, 2007. doi: 10.1016/j.jcis.2007.02.042
S.S. Dukhin, Electrical Conductivity and Electrokinetic Properties of Disperse Systems. Kyiv, SU: Naukova Dumka, 1975 (in Russian).
V.A. Gritsenko et al., “An analysis of the correlation between seroresistance and physico-chemical properties of Escherichia coli with the ability of forming biofilms”, Vestnik OGU, vol. 140, no. 4, pp. 201–205, 2012 (in Russian).
S.S. Dukhin et al., Electrosurface Phenomena and Electrofiltration. Kyiv, SU: Naukova Dumka, 1985 (in Russian).
GOST Style Citations
- There are currently no refbacks.
Copyright (c) 2017 NTUU KPI