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Non-equilibrium plasma treatment technology is a set of hydroxyl radicals (· OH) and hydrogen peroxide (H 2 O 2 ), ozone (O 3 < / sub>) the role of the active substance in one of the advanced oxidation technology, because of its low energy consumption, high processing efficiency, rapid response and non-selective, no secondary pollution and other advantages, the technology showed a good prospect and great market potential. From the status quo of the present study, a reasonable choice of the the discharge reactor structure and adsorption / catalyst is a major obstacle to restrict the technical advantages into full play. To this end, the paper designed a new type of discharge reactor, methyl orange pollutant effects of the reactor electrode structure and the various process parameters on the degradation, salinity and energy efficiency. Explore the non-equilibrium plasma with granular activated carbon (GAC), activated carbon fiber (ACF), activated carbon fiber composite photocatalytic materials (TiO 2 / ACF) joint treatment synergies investigated the GAC and ACF adsorption properties, catalytic O 3 into the performance of · OH and TiO 2 / ACF's adsorption and photocatalytic properties; analysis of the pulse discharge its pore structure and surface chemical properties and to explore the synergistic mechanism of non-equilibrium plasma in combination with the material processing. Achieved through a series of experimental studies and analysis, the following research: the high-voltage pulse power pulsed high voltage is applied to the high voltage needle electrode in the liquid phase and the gas phase ground electrode in liquid and vapor phase discharge, liquid generated · OH H 2 O 2 and other reactive species, gas produce O 3 . Above the ground electrode into the processing solution and the barrier network, is set in the processing solution improves O 3 utilization. Circulation tube and peristaltic pump the the solution constitutes cycle, the pre-oxidation zone and the main oxidation zone in the pre-oxidation zone O 3 oxidation solution further processing in the main oxidation zone to achieve a variety of oxidation organic combination of technologies to improve the processing efficiency. The main oxidation zone degradation of organic pollutants · OH attack, pre-oxidation zone degradation of organic pollutants, there are two mechanisms that electrophilic attack of O3 and O3 decomposition of? OH attack. 0.1L solution processing of 40mg / L, the degradation rate reached 90%, and the experimental error is less than 3.4%. The increase in the initial concentration or the amount of the treatment liquid can improve the utilization of the O3, thereby improving the energy efficiency of the reactor, the process 0.1L concentration of 40,60,80,100 mg / L solution of the energy efficiency of the reactor reached 2.1 2.8,3.4,3.6 g / (kWh); 1 times the amount of the treatment liquid increases, the energy efficiency of the reactor were added to 4.1,5.4,5.9, and 5.9 g / (kWh). The pulse discharge GAC or ACF joint treatment showed good synergies, synergies generated mainly attributed to the GAC and ACF adsorption and catalysis. GAC and ACF is a concentration centers adjacent to the region to create a high concentration in the environment through the adsorption on its surface and its surrounding, and the GAC and ACF surface is transformed exploded, basic functional group on its surface can promote O 3 the decomposition · OH, thereby improving the removal of the degradation rate of the methyl orange and COD. Due to differences in pore structure and surface chemical properties, ACF showed more excellent than GAC adsorption and catalytic properties, pulse discharge with GAC treatment concentration of 60mg / L 0.2L solution, the degradation rate has remained at around 92%, COD removal efficiency of 78%, the energy efficiency of 6.2g / (kWh); the pulse discharge ACF joint concentration for the 0.2L solution of 80mg / L, the degradation rate has remained at around 92%, COD removal efficiency reached 82 %, the energy efficiency of 8.3g / (kWh). Reuse the GAC and ACF adsorption and catalytic activity is not due to the increase in the number of lower and GAC and ACF pulse discharge process in situ regeneration, regeneration rate of 80% and 90%, respectively. GAC and ACF surface of the acidic and alkaline functional groups in the process of pulse discharge, since the non-equilibrium plasma and O 3 common oxidation having different degrees of increase, having a different degree than the surface area and pore volume increase or decrease, so, GAC, and ACF in the combined treatment plays the catalytic O 3 transformed into the role of the initiator or catalytic additives · OH. Pulse discharge with TiO 2 / ACF joint treatment showed significant synergies, the synergies generated mainly attributed to TiO 2 / ACF adsorption and TiO , 2 photocatalysis. Very easy due to the adsorption of dissolved O3 and TiO 2 on the surface of electron reaction, reducing the TiO 2 of electrons and holes in the surface of the composite, and to enhance the photocatalytic reaction of the light quantum efficiency, so that the reaction tends to be more thorough. The reuse process TiO 2 / ACF catalytic activity remained unchanged, processing 0.2L concentration of 80mg / L of the solution, the degradation rate was maintained at 97%, 91% COD removal, energy efficiency of 8.7g / (kWh), and TiO 2 / ACF regeneration rate reached 95%. In the course of repeated use TiO 2 / the ACF surface of the morphology and nature of the influence from pulse discharge, only small changes in the pore structure. Photocatalyst carrier ACF do can achieve the the immobilized effect, good interface mass transfer at the same time and in order to achieve a combination of adsorption and catalytic.
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