The Integrated Processes of Ultrafiltration and Iron-Carbon Micro-Electrolysis in the Treatment of Drawing Lubricant

Abstract

Two integrated processes, ultrafiltration and iron-carbon micro-electrolysis, in industry-scale test for treating abandoned drawing lubricant with water quantity of 1000L/h were studied. In the process of stable operation, 83.5% to 93.4% chemical oxygen demand (COD) and more than 99% turbidity was removed by ultrafiltration. Then throughout the technology of iron-carbon micro-electrolysis, the COD of ultrafiltration concentration could be further eliminated 95%. With the treatment of integrated processes, the abandoned drawing lubricant got effectively disposal. The research also showed that this combined process had broad application prospects in the treatment of all kinds of metal-working fluids, eg. cutting fluid, lubricating fluid and emulsified liquid.