The Research Of Catalytic Oxidation Of Atmospheric Pressure To Naproxen Wastewater Treatment

The half-life of pharmaceutical wastewater is not long as persistent organic pollutants(pops).However it forms the false phenomenon of sustainability with using by the human a lot and frequent.Human health and ecological balance exists great potential threat.As a kind of important method to treatment poisonous and harmful,difficult biodegradability organic pollutants,catalytic oxidation technology can effectively remove the big part refractory organics,and has little secondary pollution.Therefore,it has certain realistic meaning to deal with pharmaceutical wastewater with catalytic oxidation technology.In this paper,we explore the catalytic oxidation technology to treatment naproxen wastewater.Naproxen and naproxen sodium wastewater are selected as the research object.First,the effect of the catalytic oxidation of naproxen was studied.The experimental results showed that when we deal with naproxen wastewater whose initial concentration is 10mg/L,Fe2O3/gamma-Al2O3 whose iron content is 2%,the reaction temperature of 50℃ oxidant H2O2 concentration of 5 mg/L,the catalyst concentration is 1.5 g/L,the initial solution pH does not regulate,it has removal rate of 70.3%to naproxen.It has higher removal rate up to 99.1%when improve the temperature to 80℃.In addition,the kinetic analysis was studied of this reaction.Results showed that the reaction series of naproxen and oxidant are 0.0477 and 0.0291,It can be judged that this reaction is zero level reaction;the macroscopic reaction activation energy is about 205.9 kJ/mol and reaction rate constant is about 0.0465 mol/(L · s).Secondly,naproxen sodium catalytic oxidation reaction was explored under normal conditions.The experimental results show that Ti,P,Ce,Al multicomponent catalysts effect is superior to load type catalyst for the catalytic degradation of naproxen sodium.There are physical adsorption and chemical adsorption at the same time.Overall,the series of catalysts treated naproxen sodium and the highest removal rate of naproxen sodium was up to 92%.