Composition and properties of industrial wastewater and its electrochemical treatment

Abstract

In the paper, the focus is on the electrochemical treatment of industrial wastewater containing chromium ions. Hexavalent chromium compounds, commonly used in industry, are known to be poisonous and carcinogenic. The study examines the composition of industrial wastewater containing chromium ions and compares it with the maximum allowable concentration (MAC). The research also investigates the purification process's dependency on various factors such as time, initial concentrations of chromium ions, current density, and pH of the medium. Model solutions of industrial wastewater and actual samples are used for this analysis. Based on the results, a basic technological scheme for the electrochemical treatment of industrial wastewater is developed. This scheme aims to reduce the concentration of chromium ions to levels that comply with safety regulations. Overall, the study contributes to the understanding of effective methods for treating industrial wastewater containing toxic chromium compounds, ensuring environmental safety and regulatory compliance in industrial settings.