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Method for producing MnO2 supported catalyst as well as method of using the same and apparatus for treating waste water

A supported catalyst and reaction device technology, which is applied in the fields of oxidized water/sewage treatment, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of difficult reuse of catalysts, low degradation efficiency of refractory organic substances, etc. Good catalytic degradation efficiency, enriched ozone oxidation technology, and prolonged residence time

Inactive Publication Date: 2009-04-15
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that in the homogeneous ozone catalytic oxidation, the catalyst is difficult to reuse, and in the heterogeneous ozone catalytic oxidation, the degradation efficiency of refractory organic matter is not high, and a kind of MnO 2 Preparation method of supported catalyst and catalytic ozonation water treatment method and a wastewater treatment device provided

Method used

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  • Method for producing MnO2 supported catalyst as well as method of using the same and apparatus for treating waste water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The MnO of this embodiment 2 The preparation method of the supported catalyst is as follows: the activated carbon is used as the carrier, and the active part is MnO 2 Manganese acetate is formulated into a solution with a concentration of 5% by mass, and activated carbon is impregnated in the solution for 24 hours at room temperature. After evaporation and concentration, it is dried at 105°C for 2 hours, and placed in a muffle furnace at 700°C. Calcined at a temperature of 4 hours to obtain a solid catalyst, which was washed 3 times before using the catalyst.

Embodiment 2

[0020] The MnO of this embodiment 2 The preparation method of the supported catalyst is also as follows: use active aluminum oxide, white silica gel, molecular sieve, zeolite or diatomaceous earth as the carrier, and the active part is MnO 2 Manganese acetate is formulated into a solution with a concentration of 5% by mass, and one of activated aluminum oxide, white silica gel, molecular sieve, zeolite or diatomaceous earth is soaked in the solution, soaked at room temperature for 24 hours, evaporated After concentration, it was dried at 105°C for 2 hours, placed in a muffle furnace and calcined at 700°C for 4 hours to obtain a solid catalyst, which was washed three times before use.

Embodiment 3

[0022] like figure 1 As shown, the ozone catalytic oxidation treatment organic wastewater reaction device of the present invention is composed of an air inlet 1, a catalyst 2, a microporous aeration 3, a separator 4, an air outlet 5, a catalyst feed port 6, an ozone generator 7, and the like. The reactor should be made of stainless steel, polyvinyl chloride, plexiglass, etc. or other materials lined with oxidation-resistant and anti-corrosion coatings. During the reaction, the gas enters the reactor through the bottom aeration device 1, and enters the upper reaction space through the microporous aeration device 3 on the partition 4 step by step. The catalyst 2 exists on each layer of partitions in the form of a fluidized bed, and the tail gas is passed The gas outlet 5 is discharged and processed by the exhaust gas absorption device.

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Abstract

The invention discloses a method for preparing MnO2 supported catalysts, an application method thereof and a wastewater treatment device. The preparation method comprises the following steps: manganese acetate is prepared into a solution; one of activated carbon, active aluminium sesquioxide, white silica gel, a molecular sieve, zeolite or diatomite is taken as a carrier and dipped in the solution; and supported solid catalysts are prepared through dipping, evaporation, concentration, drying and roasting. A reactor of the wastewater treatment device is divided into a plurality of reaction spaces by baffles, and the catalysts exist as fluidized beds on every baffle. When the MnO2 supported catalysts prepared by the method are used in the reaction of degrading refractory organic matter through ozone catalytic oxidation, the contact time among the MnO2 supported catalysts, wastewater and ozone is between10 and 120 minutes, and the mass ratio of the adding amount of the catalysts to the wastewater in the reaction is between 1 to 200 and 1 to 20. The MnO2 supported catalysts prepared by the method have the characteristics of easy recovery, high repeat utilization property and high efficiency of catalyzing and degrading refractory organic matters.

Description

technical field [0001] The present invention relates to MnO 2 Preparation method and use method of supported catalyst, and use MnO 2 The reaction device for the treatment of organic wastewater with supported catalysts decomposes and removes refractory toxic and harmful organic substances in the reactor of the reaction device. Background technique [0002] As a strong oxidizing agent, ozone is gradually being paid attention to by people because of its unique advantages. It is widely used in the fields of water disinfection, air disinfection, object surface disinfection, and environmental deodorization and deodorization. Since the application of ozone in water treatment, due to the high equipment and operating costs of ozone treatment, although extensive research has been carried out later, there are few practical applications except for drinking water disinfection. In recent years, due to the difficulties encountered in the practice of water treatment, such as the lack of e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34B01J29/076C02F1/78
Inventor 潘湛昌许磊肖楚民黄雪萍邓宇文魏志钢
Owner GUANGDONG UNIV OF TECH
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