Device for compositely catalytic oxidation treatment of organic wastewater and preparation method of catalytic anode

A technology of organic wastewater and catalytic oxidation, applied in catalyst activation/preparation, oxidized water/sewage treatment, chemical instruments and methods, etc., can solve the problems of high operating cost, inability to achieve industrial-scale application, and poor complete mineralization ability. To achieve the effect of reducing operating costs

Inactive Publication Date: 2013-02-13
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, ozone oxidation is mainly based on direct oxidation, which has strong selectivity and can convert larger molecular organic matter into small molecular organic matter. Its complete mineralization ability is poor, and the utiliz

Method used

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  • Device for compositely catalytic oxidation treatment of organic wastewater and preparation method of catalytic anode
  • Device for compositely catalytic oxidation treatment of organic wastewater and preparation method of catalytic anode
  • Device for compositely catalytic oxidation treatment of organic wastewater and preparation method of catalytic anode

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Experimental program
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Effect test

Embodiment 1

[0050] Ce, La, Ir doped Ti / SnO 2 -Sb electrode preparation:

[0051] The surface of the titanium metal plate substrate is sanded with abrasive cloth and pretreated with acid and alkali to remove the oil stain on the surface, and the surface is etched to increase the adhesion of the active coating on the titanium substrate. Take a certain amount of SnCl with a molar ratio of Sn:Sb:Ir=100:10:24 ·5H 2 O, SbCl 3 , IrCl 3 ·3H 2 O metal salt mixture, add citric acid to it, its molar ratio to the sum of each metal is citric acid: the sum of each metal = 1:1, to obtain a solid mixture, add absolute ethanol and polyethylene glycol to the solid mixture (400), the volume addition of absolute ethanol is 8-12 times the volume addition of polyethylene glycol (400), the mass content of the metal salt in the mixture is 2-4%, and the mixture is magnetically stirred at 60°C After 3h, a uniform inner layer precursor mixed solution was obtained. Apply the prepared mixed solution of the inne...

Embodiment 2

[0054] Preparation of particle electrodes: ①Carrier pretreatment, the ceramic particles were placed in 0.1mol / l hydrochloric acid and 0.1mol / l sodium hydroxide solution and boiled for 30min, then rinsed and soaked repeatedly to remove the impurities adsorbed on the surface, and washed Drain the carrier and dry it at 105°C for 10 hours; 3 ) 2 , Ce(NO 3 ) 3 and RuCl 3 The molar ratio is 100:10:1 to prepare the mixture, and then add absolute ethanol to the mixture to form a mixed solution. The mass content of the metal salt in the mixed solution is 5-10%, and then add 5% of the mixed solution to the mixed solution. % of 0.1mol / l hydrochloric acid solution to obtain the impregnation solution; ③ impregnation, the pretreated ceramic particles are placed in the impregnation solution, dynamically soaked on a shaker for 3 hours, and the particles are filtered out to impregnate the impregnated active components on the ceramic particles. ; ④ drying and roasting activation. The ceram...

Embodiment 3

[0056] The initial concentration of aniline wastewater is 2150mg / L, using three Ti / SnO 2 -Sb-Ir-Ce anode and three titanium plate cathodes are connected in parallel, the electrode spacing is 1.5cm, and ceramic particles / MnO are filled between the positive and negative electrodes 2 -Ce-Ru electrodes, solar photovoltaic cells to charge the battery, adjust the control system to output electrocatalytic initial voltage of 6V and ozone generator electrolytic working voltage of 5V, ozone flow rate of 20L / H, circulating wastewater flow rate of 200L / H, ozone recombination by electric field Catalytic oxidation treatment for 2 hours. The conversion rate of aniline was 99.6%, and the removal rate of COD was 86.4%.

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PUM

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Abstract

The invention discloses a device for compositely catalytic oxidation treatment of organic wastewater and a preparation method of a catalytic anode. The device comprises a solar photovoltaic power system, a control system, a storage battery pack, an ozone generator and an electric field ozone catalytic composite reactor, wherein the electric field ozone catalytic composite reactor comprises a shell, a wastewater inlet is formed on the lower end of the shell, and a wastewater outlet is formed on the upper end of the shell; a lower septal pore plate and an upper septal pore plate are arranged in the shell; a catalytic anode and a catalytic cathode are arranged between the lower septal pore plate and the upper septal pore plate; catalytic particles are filled between the catalytic anode and the catalytic cathode; and a gas-water mixer is arranged between the lower septal pore plate and the wastewater inlet. The preparation method comprises the following steps: taking a titanium plate and using the titanium plate as a substrate; uniformly coating mixed precursor solution of an inner layer onto the titanium plate and forming a film on the titanium plate, drying, thermally oxidizing and annealing to form an inner layer; and coating the mixed precursor solution of an outer layer onto the inner layer, drying, thermally oxidizing and annealing to a room temperature.

Description

technical field [0001] The invention relates to a device for treating organic wastewater by composite catalytic oxidation and a preparation method of a catalytic anode, belonging to the technical fields of solar energy utilization, electrocatalysis and ozone catalytic water treatment. It specifically relates to a device for compositely degrading organic waste water by solar power generation-electrocatalytic oxidation and ozone catalytic oxidation. Background technique [0002] With the rapid development of chemical, pharmaceutical and other industries, the refractory organic compounds in these industrial wastewaters have complex types, high toxicity, poor biodegradability, easy accumulation in organisms, and are prone to teratogenic, carcinogenic, and mutagenic effects on the human body. cause" effect. In recent decades, due to the major environmental pollution caused by industrial wastewater, it has caused serious harm to the ecological balance and the human living environ...

Claims

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Application Information

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IPC IPC(8): C02F1/46C02F1/78B01J23/656B01J37/02C02F101/30
CPCY02W10/37
Inventor 孙岳明徐海青李爱平齐齐蒋伟黄斌
Owner SOUTHEAST UNIV
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