Study On The Treatment Of High Nitrogen Simulated Petroleum Wastewater By Ozone Catalytic Oxidation

Marine oil has the characteristics of high acid and high nitrogen,and it is difficult to deal with the waste water,which is complex in the process of oil extraction and processing.In this paper,the use of phenol,quinoline analog high nitrogen,high oxygen and containing oil wastewater to study the ozone catalytic oxidation process of HTS titanium silicon molecular sieve catalyst based on the reusability and regeneration performance were investigated.By analyzing the catalytic coronation degradation kinetics,the catalyst was XRD,IR,BET,TG characterization;the paper analyzes the deactivation mechanism of the catalyst,and the process of economic analysis.The results of the study show that at pH 8,the temperature is 40 ?.,HTS titanium silicon molecular sieve catalyst dosage is 2.8g/L,continuous access to the ozone 25 min of simulated wastewater containing phenol and quinoline containing wastewater COD removal rate are 93.5% and 84.3%.Under the condition of weak alkaline,it is beneficial to the formation of hydroxyl radical,which can promote the catalytic oxidation of ozone.HTS titanium socialite catalyst is used for 5 times to lose its activity in the simulated wastewater of phenol,and the simulated wastewater of quinoline was reused for 6 times.Compared with the fresh catalyst and the catalyst characterization data,it is can be predicated that the basic structure of the catalyst is unchanged.It is found that the catalyst was reactivated after calcinations of the reused catalyst at 550?.Based on the analysis of the experimental data,it is concluded that the degradation of phenol and quinoline simulated wastewater by ozone catalytic oxidation on the basis of HTS titanium socialite is in accordance with the pseudo first order kinetics.The effect of temperature on the reaction rate was the highest,followed by the addition of catalyst.At last,the cost of the simulated wastewater was 7.37 yuan / t.