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Inorganic film for treating organic waste water under catalysis of ozone and preparation method of film

A technology of organic wastewater and ozone catalysis, applied in the direction of oxidized water/sewage treatment, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of unusable, non-catalyzed ozone decomposition, oxidation treatment of sewage And other issues

Inactive Publication Date: 2014-04-23
TIANJIN ACADEMY OF ENVIRONMENTAL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with traditional organic membranes, inorganic membranes have outstanding advantages such as high temperature resistance, corrosion resistance, cleaning resistance, high mechanical strength, stable structure without deformation, and long life. Since the current inorganic membranes can only achieve solid-liquid separation, there is no catalytic ozone The function of decomposing and oxidizing organic matter in sewage
Therefore, it cannot be used in a coupled ozone membrane catalytic reactor

Method used

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  • Inorganic film for treating organic waste water under catalysis of ozone and preparation method of film
  • Inorganic film for treating organic waste water under catalysis of ozone and preparation method of film
  • Inorganic film for treating organic waste water under catalysis of ozone and preparation method of film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0113] An inorganic membrane used for ozone catalytic treatment of organic wastewater, which is composed of a modified inorganic membrane support and a modified treatment membrane separation layer, the composition of the modified inorganic membrane support is

[0114] Aggregate: average particle size 30 -Al 2 o 3 93.8%, bentonite 1.25%;

[0115] Pore ​​former: purple wood knot; 1.9%

[0116] Additives: modified Mn-Si-Ti catalyst 0.8%, copper nitrate 0.75%;

[0117] Dispersant: lecithin 1.5%;

[0118] The composition of the modified treatment membrane separation layer is

[0119] Aggregate: -Al 2 o 3 88.9%, bentonite 0.45%

[0120] Pore ​​forming agent: purple wood knot 0.9%

[0121] Additives: Ni-Co catalyst 6.5%, Zn nitrate 2.75%;

[0122] Dispersant: 0.5% lecithin.

[0123] Membrane preparation method:

[0124] (1) Preparation of modified inorganic membrane support:

[0125] 1) Preparation of support modified catalyst:

[0126] ①Using silica molecul...

Embodiment 2

[0158] An inorganic membrane used for ozone catalytic treatment of organic wastewater, which is composed of a modified inorganic membrane support and a modified treatment membrane separation layer, the composition of the modified inorganic membrane support is

[0159] Aggregate: average particle size 30 -Al 2 o 3 93.8%, bentonite 1.25%;

[0160] Pore ​​former: purple wood knot; 1.9%

[0161] Additives: modified Mn-Si-Ti catalyst 0.8%, copper nitrate 0.75%;

[0162] Dispersant: lecithin 1.5%;

[0163] The composition of the modified treatment membrane separation layer is

[0164] Aggregate: -Al 2 o 3 88.9%, bentonite 0.45%

[0165] Pore ​​forming agent: purple wood knot 0.9%

[0166] Additives: Ni-Co catalyst 6.5%, Zn nitrate 2.75%;

[0167] Dispersant: 0.5% lecithin.

[0168] The preparation method is carried out according to the following steps:

[0169] (1) Preparation of modified inorganic membrane support:

[0170] 1) Preparation of support modified ...

Embodiment 3

[0298] Coupled Membrane Ozone Catalytic Reaction Technology for MDI Clean Production in Marine Chemical Industry

[0299] background overview

[0300] A chemical company produces diphenylmethane diisocyanate (MDI), which is one of the main raw materials for the production of polyurethane products. However, the production wastewater has high salt content, poor biodegradability, large changes in water quality and toxicity. The main organic components are aniline, Chlorobenzene, formaldehyde and methanol, etc., are difficult to handle by conventional methods. Therefore, the membrane ozone catalysis technology of the present invention is used to remove and recycle the organic matter in the MDI high-salt wastewater, and reuse the brine to make it a raw material for caustic soda production enterprises, so as to realize clean production among enterprises and resource conservation. Efficient use of.

[0301] Processing effect

[0302] After the clean production is implemented...

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Abstract

The invention discloses an inorganic film for treating organic waste water under catalysis of ozone and a preparation method of the film. The preparation method mainly comprises preparation and modification treatment of a supporting body and a separation layer of the film, and is characterized by comprising the step of respectively loading different types of catalysts on the surfaces of the modified supporting body of the inorganic film and the modified film separation layer so as to form a multi-level three-dimensional catalysis composite. The three-dimensional catalysis composite prepared by the method not only can be used for achieving a solid-liquid separation function of an ordinary inorganic film, but also has the function of catalyzing ozone decomposition, so that the oxidation efficiency and the degradation efficiency of ozone on organic pollutants in waste water can be improved. Furthermore, the chemical components of the supporting body and the film separation layer are modified, so that film holes are smooth, the pressure drop is small, the blocking rate of pollutants is reduced, and the service life of a film assembly is prolonged.

Description

technical field [0001] The invention belongs to the field of environmental protection, and relates to a membrane assembly with special functions, more specifically an inorganic membrane used for ozone catalytic treatment of organic wastewater and a preparation method thereof, which is mainly used for the treatment of refractory organic wastewater. Background technique [0002] According to biodegradability, organic pollutants in wastewater can be divided into easily degradable organic pollutants and refractory organic pollutants. There are mature treatment technologies for the treatment of easily degradable organic pollutants, such as various technological processes evolved from activated sludge and biofilm, but the treatment of refractory organic pollutants is still being explored, resulting in some high The direct discharge of high-concentration refractory wastewater is not only due to financial and management reasons, but also the lack of efficient and appropriate treatme...

Claims

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Application Information

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IPC IPC(8): B01D71/02B01D69/10B01D67/00C02F1/44C02F1/78B01J23/34B01J23/755
Inventor 许丹宇石岩郑先强卢学强邓小文段云霞张洪雷马超华檀翠玲
Owner TIANJIN ACADEMY OF ENVIRONMENTAL SCI
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