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Method for modifying water treatment inorganic catalytic membrane

A catalytic membrane and water treatment technology, applied in chemical instruments and methods, osmotic/dialysis water/sewage treatment, membrane technology, etc., can solve the problems of weak anti-fouling ability and no catalytic performance of inorganic membranes, and achieve good industrial application prospects , Improved anti-pollution ability, easy to clean

Active Publication Date: 2014-01-08
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a modification method for inorganic catalytic membranes for water treatment in order to solve the problems of weak anti-pollution ability and no catalytic performance of existing inorganic membranes

Method used

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  • Method for modifying water treatment inorganic catalytic membrane

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specific Embodiment approach 1

[0015] Embodiment 1: In this embodiment, a method for modifying inorganic catalytic membranes for water treatment is realized according to the following steps: immerse the inorganic membrane in pure water, take it out after 24-48 hours, and then directly immerse it in Immersing in the solution for 0.5h to 8h to obtain a modified inorganic membrane; wherein the solution is an oxidant solution or a reducing agent solution, and the mass concentration of the solution is 0.1mg / L to 500mg / L;

[0016] Or immerse the inorganic membrane in pure water, take it out after 24 to 48 hours, and then immerse it in the oxidant solution and the reducing agent solution respectively, the immersion time is 2h to 5h, take it out, and obtain the modified inorganic membrane; The mass concentration of the reducing agent solution is 0.1 mg / L to 500 mg / L, and the mass concentration of the reducing agent solution is 0.1 mg / L to 500 mg / L.

specific Embodiment approach 2

[0017] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the inorganic membrane is a flat membrane or a tubular membrane. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0018] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is: the said immersion into the oxidizing agent solution and the reducing agent solution respectively refers to: first immerse in the reducing agent solution, soak for 2 hours, take it out and then Immerse in the oxidizing agent solution, immerse for 2 hours, take out, and obtain the modified inorganic membrane. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a method for modifying an inorganic membrane, in particular to a method for modifying a water treatment inorganic catalytic membrane. The method aims to solve the problems that an existing inorganic membrane is poor in pollution resisting capacity and has no catalytic performance. According to the method, one method comprises the steps that the inorganic membrane is soaked in pure water, is soaked in solutions after being taken out and then is taken out, and the modified inorganic membrane with the catalytic performance is obtained; the other method comprises the steps that target substances plate the function layer of the inorganic membrane on the basis of a pulse laser deposition technology, then the inorganic membrane plated with the target substances is soaked into the solutions and taken out, and the modified inorganic membrane with the pollution resisting capacity and the catalytic performance is obtained. The membrane interception rate of the obtained modified inorganic membrane can reach 99%-100%, the flux recovery rate can reach 80%-85%, and the catalytic oxidation phenol removing rate is 50%. The method is applied to the field of water treatment.

Description

technical field [0001] The invention relates to a method for modifying an inorganic membrane. Background technique [0002] Pulsed Laser Deposition (PLD) is a means of bombarding objects (target substances) with laser light, and then depositing the bombarded substances on different substrates to obtain precipitation or thin films. Its advantages are that the process parameters can be adjusted, there is no limit to the type of target substance, the substrate temperature requirement is low, and the prepared film is uniform; it is easy to clean and process, and can prepare various film materials. Using PLD technology, different target substances can be deposited on the substrate, and then the surface of the substrate can be modified. [0003] Membrane separation technology is a physical filtration process that does not undergo phase change and can be carried out at room temperature. It occupies a small area and has a wide range of applications. It has the advantages of high s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D67/00C02F1/44
Inventor 马军吕东伟
Owner HARBIN INST OF TECH
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