Preparation Of Aluminium Loaded Transition Metal Oxide Ozone Catalysts And Their Performance In The Treatment Of Oil Field Sewage

As the major oil field enter the tertiary oil recovery,the increasing oil by-product water produced by oilfield has brought great trouble.In recent years,oilfield focused on the treatment of waste water to meet the discharge standards.However,the biggest difficulty in the treatment of oil production waste water is that it contains dozens of organic pollutants,meanwhile,if the index of CODcr and IR petroleum in wastewater cannot meet the standards,the oilfield produced water surplus problem cannot be solved effectively.As the complexity of organic pollutants in the produced effluent,traditional processing technology for the oil field waste water cannot meet the requirements at present.Ozone catalytic oxidation has attracted much attention for its strong oxidation,high oxidation efficiency and wide applications.The core catalyst of ozone catalytic oxidation technology can greatly improve the efficiency of ozone oxidation,and developed rapidly in recent years.In this article,five active components Fe,Co,Ni,Cu and Ce were coated on Al₂O₃ by mixed impregnation or doping impregnation to prepare a special ozonation catalyst and the efficiency of the oil production wastewater is tested.Meanwhile related characterization and industrial model of the catalyst were also carried out.It is intended to evaluate the catalyst from both theory and practice.The results show that,with the addition of this catalyst,the removal rate of UV₂₅₄?An unsaturated organic material in water that absorbs ultraviolet light?in oily wastewater can reach 95%when 13.6g/h ozone is added?60?,pH,,.0,ozone aeration time 90min,high diameter ratio 5.0,order batch treatment ratio is mwater:mcatalyst,1:1?.Optimum preparation conditions of Fe_1.0Cu_1.0Ni_0.6Ce_0.2/Al₂O₃:Fe impregnation time 24h,impregnation solution concentration 1.0mol/L,calcination temperature 400?,Cu impregnation time 24h,impregnation solution concentration1.0mol/L,calcination temperature 400?,Ni impregnation time 24h,soa1ing liquid concentration 0.6mol/L,calcination temperature 500?c Ce impregnation time is 36h,soa1ing liquid concentration 0.2mol/L,and the calcination temperature 400?.