The Research Of Dielectric Barrier Discharge With Catalytic Combined Treatment Direct Red Dye Wastewater

With the rapid development of the global economy and society,the environment and people's health is being serious harm of various kinds of pollutants.Where industrial waste is one of the major pollutants of water resources in China.Printing and dyeing industry-on people's material and cultural plays an important role,is a pressing problem.This project uses a dielectric barrier discharge technology based on plasa to research,a unique new subject.In this study,direct pink 12B simulated wastewater as a target degradation,several factors have been studies on the degradation of dye wastewater,mainly on the discharge voltage,intake air,the initial concentration,initial solution conductivity and electrode initial pH.simultaneously AlO3?combined load of Mg and Ag?and activated carbon are used to handle dye wastewater as catalyst to observe the effect of degradation.Following conclusions:Degradation of direct pink 12B increased with increasing the discharge voltage,however the degradation rate is not obvious on higher voltage;Effect of intake air is similar to the discharge voltage,the degradation reached the peak at 0.4 m3/h rate of the intake air,continuing to increase without much improvement;In the early reaction,Degradation of direct pink 12B reduced with increasing initial dye concentration,and degradation rate of different initial concentrations began to become more similar after a period of time,but the amount of degradation increases as increasing of concentration;Different initial solution conductivity have a very low impact on degradation of direct pink 12B,almost negligible;Direct pink 12B degradation rate increases with increasing initial dye pH under the same reaction time,because acid solution had obvious inhibition to the degradation,whereas alkaline solution can facilitate;Considering energy consumption from the perspective of dynamics,the optimal discharge voltage is 5000V from an economic point of view;Emission spectroscopy,the emission spectrum uses N2.in air as the medium.Combining low content of activated carbon and dielectric barrier discharge method can promote degradation of the direct pink 12B.The high proportion of activated carbon in a mixing method has an inhibitory effect for degradation;The method of catalyst Ag/Al₂O₃ combined dielectric barrier discharge has no positive effect for degradation;The method of Mn-Ag/Al₂O₃ catalyst dielectric barrier discharge method has a role in promoting.Compared to several catalysts,6g activated carbon has optimal effect on degradation of the direct pink 12B,3%Mn-2%Ag/AlwO3 catalyst followed,1%Ag/Al₂O₃ catalyst the worst.?2?low levels of activated carbon and dielectric barrier discharge method combined with the direct pink 12B can promote degradation,the degradation rate increase 6.70%when activated carbon was added 4g;Ag/Al₂O₃ catalyst with a dielectric barrier discharge method combined with the degradation of the direct pink 12B having no positive effect;Mn-Ag/Al₂O₃ catalyst dielectric barrier discharge method combined with the direct pink 12B has a role in promoting degradation,the optimal conditions for adding 4g the 3%Mn-2%Ag/A1203 catalyst which can make the degradation rate increasing 8.74%;compared to several catalysts,added 4g the 3%Mn-2%Ag/A1203 catalyst best.