Electroplating plant sewage technology
https://doi.org/10.31675/1607-1859-2021-23-3-143-154
Abstract
Electroplating plant sewage is characterized by high concentration of metals, suspended solids, acids, alkalis and other contaminants. The irregular inflows, low pH values and specific sewage composition complicate its treatment. The main treatment methods include chemical precipitation, ion exchange, chemical and electrochemical oxidation, flotation, filtration and membrane separation. The paper proposes a possible variant of wastewater treatment in a small electroplating plant. The proposed flow diagram includes sedimentation of polluting substances with sodium hydroxide and oxidation with anolyte. The method results in a 88.9 % reduction in chemical oxygen demand, 99.5 % reduction in suspended solids, 99.8 % reduction in iron, 95.7 % reduction in surfactants, and 99.9 % reduction in copper ions. The pH value of the treated water is 7.8 and matches the value of a slightly alkaline environment.
About the Authors
L. V. Belova
Industrial University of Tyumen
Russian Federation
Russian Federation
Larisa V. Belova, PhD, A/Professor
38, Volodarskii Str., 625000, Tyumen, Russia
E. I. Vyalkova
Industrial University of Tyumen
Russian Federation
Russian Federation
Elena I. Vialkova, PhD, A/Professor
38, Volodarskii Str., 625000, Tyumen, Russia
E. S. Glushchenko
Industrial University of Tyumen
Russian Federation
Russian Federation
Ekaterina S. Glushchenko, Assistant Lecturer
38, Volodarskii Str., 625000, Tyumen, Russia
E. Yu. Osipova
Tomsk State University of Architecture and Building
Russian Federation
Russian Federation
Elena Y. Osipova, PhD, A/Professor
2, Solyanaya Sq., 634003, Tomsk, Russia
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Review
For citations:
Belova L.V., Vyalkova E.I., Glushchenko E.S., Osipova E.Yu. Electroplating plant sewage technology. Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. JOURNAL of Construction and Architecture. 2021;23(3):143-154. (In Russ.) https://doi.org/10.31675/1607-1859-2021-23-3-143-154
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