Study on the Treatment of PTA Productive Wastewater Using Ultrasound Enhanced Ozonation

This paper reports a scale treatment on purified terephthalic acid (PTA) productive wastewater in a 50L column form reactor by ultrasound enhanced ozonation. The degradation effects of three kinds of productive wastewater including inlet and outlet water from treatment works as well as accident wastewater are investigated. The results show that the ultrasound enhanced ozonation is an efficient way for the treatment of PTA productive wastewater, compared with traditional physicochemical and biological process. The chemical oxygen demand (COD) values of PTA productive wastewaters drop to less than 100 mg/L after treatment, meeting the requirements of industrial effluent quality standard of China, and the maximum removal rate can reach as high as 99.1%.