Treatment method of electroplating cyanide-containing wastewater

• Main Authors: DING BAOQIANG, ZHANG ZHIJIE, LI HAIYANG, LI SHUYAN, MU HAI, MA LIN, WU WENMING
• Format: Patent
• Language: Chinese; English
• Published: 21.03.2023
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a method for treating electroplating cyanide-containing wastewater, and belongs to the technical field of electroplating wastewater treatment.The method comprises the steps that the electroplating cyanide-containing wastewater is pumped into a pH value adjusting pool, alkali liquor is added to adjust the pH value to obtain effluent of the pH value adjusting pool, the effluent of the pH value adjusting pool is pumped into a sodium chloride dosing pool, a sodium chloride solution is added to obtain effluent of the sodium chloride dosing pool, and the effluent of the sodium chloride dosing pool is recycled; water discharged from the sodium chloride dosing tank is pumped into a hydrogen peroxide dosing tank, hydrogen peroxide is added to obtain water discharged from the hydrogen peroxide dosing tank, water discharged from the hydrogen peroxide dosing tank is pumped into an electro-catalytic oxidation reaction tank, electro-catalytic oxidation water is obtained after electro-catalytic oxida