Evaluation of the Brinecell(reg sign) electrochemical oxidation unit for destruction of noncyanide strippers and other colored compounds in wastewaters

摘要

The noncyanide strippers used in the plating operations at Kelly Air Force Base, in San Antonio, Texas, develop an intense red color during use. Currently, the spent strippers cannot be treated in the Industrial Wastewater Treatment Plant because, even after biological treatment, the color remains too high for discharge. The Brinecell(reg sign) process was evaluated for its application in treating the spent stripping solutions. The Brinecell(reg sign) produces strong oxidizing agents that could treat the color causing compounds. The Brinecell(reg sign) process was used to treat a 1 to 400 dilution of spent Clepo 204-T at 50 C and 60 g/L salt. After 8 hours of treatment, the color remaining was 8 units and the solution appeared colorless. Treatment of the Metalx B-9 reduced the color to 60 units. The effect of salt concentration, solution temperature, and solution pH was evaluated on the Brinecell(reg sign) treatment process.