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Preparation method of multifunctional water treatment nano material composite membrane

A technology of nanomaterials and composite membranes, which is applied in the field of preparation of multipurpose water treatment nanomaterial composite membranes, can solve the problems of high cost and engineering cost, low water permeability, low strength, etc., and achieve high strength and efficiency, not easy to degrade, good stability effect

Inactive Publication Date: 2012-11-21
王昕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The various expenses and engineering cost of above-mentioned method treatment water are very expensive
The key material used in the desalination membrane is the polymer organic membrane, which has disadvantages such as low water permeability, relatively small effective area, low strength, no corrosion resistance, easy degradation, cracking, failure, and difficult cleaning.
Therefore, it is not easy to be widely used and popularized

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] 1) Preparation of nano-skeleton material: the nano-skeleton material is made of the following raw materials in weight ratio, 5 parts of titanium oxide, 1 part of silicon oxide, 15 parts of magnesium oxide, 20 parts of aluminum oxide, and 6 parts of iron oxide;

[0037] The preparation steps are as follows:

[0038] Grind the above raw materials into 500 mesh fine powder respectively, mix evenly according to the proportion, sinter at 1300-1600°C for 1-2 hours, pour into 5-10% sodium chloride aqueous solution at -5°C to cool rapidly, and then use clean water Washing and desalination, drying, and then pulverizing into fine powder by ultra-fine pulverizer, the fine powder particle size is 5-10 nanometers to obtain nano-skeleton material for later use;

[0039] 2) The composite base film is made of the following raw materials in weight ratio:

[0040] 1 part of nano-skeleton material, 1 part of film-forming agent, 45 parts of solvent, and 0.1 part of surfactant; among them,...

Embodiment 2

[0067] 1) Preparation of nano-skeleton material: the nano-skeleton material is made of the following raw materials in weight ratio, 12 parts of titanium oxide, 8 parts of silicon oxide, 25 parts of magnesium oxide, 30 parts of aluminum oxide, and 18 parts of iron oxide;

[0068] The preparation steps are the same as in Example 1.

[0069] 2) The composite base film is made of the following raw materials in weight ratio:

[0070] 0.1 part of nano-skeleton material, 16 parts of film-forming agent, 100 parts of solvent, and 0.1 part of surfactant;

[0071] in:

[0072] The film forming agent is a mixture of polysulfone, sulfonated polysulfone and sulfonated polysulfone ketone, and the mixing ratio is 1:1:1.

[0073] The solvent is a mixture of ethanol and N,N-dimethylformamide; mixing ratio 1:1.

[0074] The surfactant is dodecyl diamine, sodium dodecyl sulfate, sodium dodecyl sulfate; the mixing ratio is 1:1:1.

[0075] The preparation steps are the same as in Example 1.

...

Embodiment 3

[0095] 1) Preparation of nano-skeleton materials:

[0096] The nano-skeleton material is made of the following raw materials in the weight ratio, 10 parts of titanium oxide, 6 parts of silicon oxide, 22 parts of magnesium oxide, 28 parts of aluminum oxide, and 16 parts of iron oxide;

[0097] Preparation steps are identical with embodiment 1;

[0098] 2) The composite base film is made of the following raw materials in weight ratio:

[0099] 0.15 parts of nano-skeleton material, 20 parts of film-forming agent, 80 parts of solvent, and 3 parts of surfactant;

[0100] in:

[0101] The film-forming agent is a mixture of sulfonated polysulfone and sulfonated polysulfone ketone, and the mixing ratio is 1:1;

[0102] The solvent is a mixture of pure water, isopropanol and N,N-dimethylformamide, the mixing ratio is 1:1:1;

[0103] The surfactant is a mixture of dodecyl diamine, sodium lauryl sulfate and sodium lauryl sulfate, and the mixing ratio is 1:1:1;

[0104] Preparation s...

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Abstract

The invention provides a preparation method of a multifunctional water treatment nano material composite membrane, which comprises the steps of: carrying out high-temperature sintering and quenching treatment and superfine crushing on a plurality of metal oxides to prepare a nano framework material; and then carrying out multiple polymerization on the nano framework material with materials of a high polymer and the like to prepare an inorganic-organic multifunctional water treatment composite membrane. The composite membrane can be widely applied to equipment and projects in the industrial fields of desalination of sea water, desalination of brackish water, water treatment, electrons and medicines, has greatly reduced preparation cost and operation cost, and has remarkable social benefit and economic benefit.

Description

technical field [0001] The invention relates to a method for preparing a percolation membrane for water treatment equipment, in particular to a method for preparing a multipurpose water treatment nanomaterial composite membrane Background technique [0002] The existing seawater or brackish water desalination methods mostly use polymer membrane reverse osmosis, thin film evaporation, dialysis, and low-temperature multiple-effect distillation. The various expenses and engineering cost of above-mentioned method water treatment are very expensive. The key material used in the desalination membrane is polymer organic membrane, which has disadvantages such as low water permeability, relatively small effective area, low strength, no corrosion resistance, easy degradation, cracking, failure, and difficult cleaning. Therefore, it is not easy to be widely used and popularized. Contents of the invention [0003] The purpose of the present invention is to overcome or solve the abov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D71/06B01D69/10B01D69/12B01D67/00
Inventor 朱惠芬
Owner 王昕