Based on analyzing the definition,composition,pollution sources and character of persistent organic pollutants,the environmental behaviors of POPs have been studied, and the mechanisms have been discussed. The analytical methods and disposal technologies of POPs are reviewed, several typical advanced oxidation techniques, such as 03/UV,03/H2O2,H202/UV combined processes and photocatalysis oxidation, the degradation mechanisms of organic pollutants are overviewed. A review about some degradation methods of PCDDs, PCDFs and PCBs are given. The heterogeneously catalytic hydrodechlorination might be develoed to an efficienttechnology to eliminate the toxicity of dioxins. |