Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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STUDY OF WATER TREATMENT BY ELECTROCHEMICAL METHODS IN NON-STATIONARY ELECTRIC FIELD WITH SUBSEQUENT COAGULATION

Shestakov I.Y. 1 Raeva O.V. 1 Nikiforova E.M. 1 Eromasov R.G. 1
1 Federal State Autonomous Educational Institution of Higher Professional Education
Electrochemical methods using insoluble electrodes and asymmetric alternating current is the most promising area of water treatment from metal ions. However, these methods have certain disadvantages - low degree of purification and high specific energy consumption (1.5-2 (kW·h)/m3). This article presents the results obtained by experimental studies of electrochemical method of water treatment in a non-stationary electric field followed by coagulation, which allows to increase the degree of water purification from metal ions and decrease specific energy consumption (0.34 (kW·h)/m3). The maximum degree of water purification from all specified ions was achieved by passing through it asymmetrical alternating current 300 coulomb/l with application of insoluble dissimilar electrodes (stainless steel 12Х18Н10Т and titanium alloy ОТ 4-0), introducing coagulating agent - ferrous sulphate (FeSO4·7H2O), the initial concentration of which was by 2.5 higher than the initial concentration of each ion removed, and subsequent settling during 10 days.