Research progress of ionizing radiation on refractory organic waste water treatment

After a brief introduction of China's present COD reduction situation and faced problems, in order to coordinate the development of economy and environment, so that we must strengthen research on refractory organic wastewater treatment technology. To this end, the paper describes the principle of how to degradation refractory organic wastewater by irradiation treatment, radiation sources used in domestic and foreign study, the main target of deal with, the application example; and highlight the main influencing factors, including absorbed dose, initial concentration of pollutants, pH, free-radical scavenger, free-radical enhancer, etc.; in order to improve radiation efficiency, The paper also introduced the technology combined with irradiated-oxidants and the technology combined with pre-irradiation -biochemical treatment; Finally, given some analyses and suggestions aimed to the problems of irradiation technology itself, especially the application feasibility of 90Sr as radiation source from the theoretical analysis. (authors)