EFFECTIVE PROCESS FOR TREATMENT OF COPPER LEACHED FROM CWO OF OILY WASTEWATER

摘要

The experiments on copper leached from catalytic wet oxidation (CWO) of oily wastewater were conducted. The effects of the initial copper concentration, pressure and concentration polarisation on the performance of nanofiltration (NF) membranes were investigated. The experimental results showed that cupric removal was higher than 98% and its concentrations in permeation liquid were lower than 2.0 mg/l, meeting the Discharge Standard or using as water for washing electroplated products, which verified that nanofiltration is an effective method for the removal of copper. By condense of cupric solution, copper enrichment reached to tenfold and realise the hope of regenerating the copper.