The Study On TiO₂/Fe₂O₃ Photochemical Catalysis Oxoprocess Treat The Waste Water Of Explosive

It expounds the necessity and importance to investigate a new method of treatment of waste water of explosive in several aspects as following:the pollution intensity,the harmfulness,research conditions at home and abroad, and the disadvantages of the conventional treatment and so on.In this essay,it expounds simultaneously the origin,development conditions at home and abroad,and the merits of the TiO₂ photochemical catalysis oxoprocess.It proves that it is an originality innovation and there will be an extensive market prospect if being introduced the development conditions of the TiO₂ photochemical catalysis oxoprocess at home and abroad.Currently,the TiO₂ photochemical catalysis oxoprocess is widely applied to the treatment of the organic pollutant although it is still in the stage of trial experiment.No relevant report has not been revealed.So it was applied the experiment of treating analog waste water of explosive by photochemical catalysis oxoprocess with the compounded photo catalyst of TiO₂/Fe₂O₃ which is a profitable trial for practical application.The results of study can offer theory foundation for the TiO₂ photochemical catalysis oxoprocess and have technique supports for water pollution controlling.Two parts were involved in the experiment. Firstly,it was prepared the photo catalyst of loading and compounding.It was prepared the nanometer TiO₂/Fe₂O₃ loaded the surface of the particle of brick,tile and sand in the Sol-gel process.It proves that the improved method was successful to prepare the compounded photo catalyst of TiO₂/Fe₂O₃ on the carrier of tile and sand.Moreover,the sand is an optimal carrier due to be easily attained and processed.Secondly,the compounded photo catalyst was applied to the experiment of treating different analog waste water of explosion in order to study the different treatment effect of different explosion.It was studied the efficiency of the degradation and COD_Crof the TNT and RDX waste water in different factors and different levels in the single factor and orthogonal experiments.At the same time,the contents of different components in the compounded photo catalyst of TiO₂/Fe₂O₃ were to be accounted.Conclusions came as following:(1)The subject is very sensible on being treated the waste water of explosive.it proved that the experiment of treating analog waste water of explosive by photochemical catalysis oxoprocess with the compounded photo catalyst of TiO₂/Fe₂O₃ which is a profitable trial for practical application.(2)The technical route is feasible on being treated the waste water of explosive.It is successful that the experiment of analog waste water of explosive was treated by photochemical catalysis oxoprocess with the compounded photo catalyst of TiO₂/Fe₂O₃ which proves the technical route is feasible.(3)The best reaction factors of TNT came as follows,the experiments was to study the efficiency of the degradation and COD_Crof the TNT waste water,pH is 3,the fit reaction time is 4 hours,the volume of 10%H₂O₂ is 1.5mL,and the times of loaded Fe₂O₃ is 2 times.(4)The best reaction factors of RDX came as follows,the experiments was to study the efficiency of the degradation and COD_Crof the RDX waste water,pH is 3,the fit reaction time is 2 hours,the volume of 10%H₂O₂ is 1.5mL,and the times of loaded Fe₂O₃ is 2 times.(5)It proved that the most important reaction factor is pH,which influenced the efficiency of degradation and COD_Crof the TNT and RDX waste water in the process of photochemical catalysis oxoprocess.It was concluded that the best mole ratio of Fe₂O₃ to TiO₂ is 3 to 4 in the compounded photo catalyst of TiO₂/Fe₂O₃,in which the content of TiO₂ is 1.2%,and Fe₃O₂ is 0.8%.(6)It proved that photochemical catalysis oxoprocess of TiO₂/Fe₂O₃ was successful in treating the waste water of TNT and RDX,and the final water sample reaches the national level of discharging the standard.The results proved that the experiment of the waste water of explosive treated by using the compounded photo catalyst of TiO₂/Fe₂O₃ was successful. It will propitiously improve the skills of scientific research on-the treatment of industry waste water,and enhance the basic researches and practical application of the photochemical catalysis oxoprocess.