EFFECT OF SUPPORTING ELECTROLYTE ON ELECTROLYTIC DEGRADATION OF CYANIDE WASTEWATER The paper describes the influence of chloride ions on the electrochemical oxidation of cyanide from wastewater. Chloride ions are added in the form of NaCl (c=0.017 mol/L), and electrochemical oxidation is carried out in a laboratory electrochemical reactor with electrodes made of steel and stainless steel (j=10 mA/cm 2 , t=90 min). In these conditions the removal efficiency of cyanide on steel electrodes was E u = 91.5%, and with electrodes made of stainless steel E u = 99.5%.