Abstract
Treatment process have been developed for wastewater from polyvinyl chloride(PVC) manufacturing plant, combining several technologies. The wastewater was ultra-filtrated to remove suspended solids of PVC and cellulose which was added as a dispersing agent. The wastewater, passing through the filter, which contains chemically and biologically refractory substances, was electrochemically oxidized to convert them into biodegradable substances, followed by being treated biologically with submerged biological bed. The process performance was obtained as overall removal of 98% in TOC, 95% in COD and 99% in BOD.
