Advanced Electrochemical Technologies in Wastewater Treatment Part I: Electrocoagulation

Authors

  • Irena Ljubomir Mickova Faculty of Technology and Metallurgy, University “Ss Cyril and Methodius”

Keywords:

electrocoagulation, structure of colloids, wastewater, electrochemical reactions.

Abstract

This paper aims to provide an overview of electrochemical technologies in wastewater treatment. Part I focuses on the basic theory development and application of electro-coagulation. Electrocoagulation is advanced and innovative method which involves direct interaction between the ions of sacrificial metal anode and the pollutants in the water. The dissolved metal ions from sacrificial anode release in wastewater, coagulate with pollutant in wastewater in a manner similar to the traditionally one where chemicals are added for coagulation. The traditionally used chemicals, alum and ferric salts, liberate both, cations and anions. In electrocoagulation there is no supplemental addition of anions and therefore, no increase in salinity of the treated water. The quantity of sludge produced is smaller than that produced during chemical treatment. In the first part of the paper is given the importance for saving the fresh water and cleaning of wastewater using traditionally methods as: physical/mechanical methods, chemical methods and biological methods. In the second part the structure of colloids and traditional coagulation widely using in nowadays is presented. In the third part, an overview of detailed electrocoagulation theory, supported by literature survey for application in wastewater treatment plants, is given

  

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2015-10-29

How to Cite

Mickova, I. L. (2015). Advanced Electrochemical Technologies in Wastewater Treatment Part I: Electrocoagulation. American Scientific Research Journal for Engineering, Technology, and Sciences, 14(2), 233–257. Retrieved from https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/1016