Discussion on the radiolysis rate of organic substances in oxytetracycline pharmaceutical wastewater

According to the basic principle of wastewater treatment by irradiation technology, the electron beam accelerator (EB) was used to treat oxytetracycline pharmaceutical wastewater. The radiolysis rate of organic substances under different conditions were discussed. The results showed that an irradiation dose was less than 20 kGy, the radiolysis rate and the absolute amount of organic substances were the largest, and the dose of 20-50 kGy, which were the lowest due to the polymerization reaction. The radiolysis rate decreased while the dose was more than 50 kGy. The addition of hydrogen peroxide within 15 mmol/L when a wastewater pH was 5-7 contributed to the radiolysis of organic substances. (author)