Research progress of heterogeneous catalytic ozonation for industrial wastewater treatment
The reaction mechanism and research status of heterogeneous catalytic ozonation of organic pollutants in waste-water with metal oxides and supported catalysts were introduced,the parameters and influencing factors in the reaction pro-cess were summarized,and it was concluded that metal oxides were always used to treat organic wastewater by adding other metals or oxides.Fe and its oxides were beneficial to the recovery and recycling of catalysts,Ce and its oxides could provide rich acid-base sites,Mn and its oxides could provide variable crystal structures,Cu and its oxides could provide active reac-tion center.In view of the problems such as poor service life of existing catalysts,easy dissolution of active components and unsatisfactory environmental economy,it was pointed out that the research on the mechanism of catalytic ozonation should be speeded up and deepened in the future.At the same time,on the basis of optimizing the reaction parameters,a replicable and easy-to-operate treatment model was established for some key industries and popularized.
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