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Polymer composite conductive ultrafiltration membrane based on stainless steel mesh and preparation method of ultrafiltration membrane

A stainless steel mesh and composite conductive technology, applied in ultrafiltration, chemical instruments and methods, membranes, etc., can solve the problems of poor cleaning efficiency, inability to remove special small molecular substances, and low ability to control pollutants, so as to improve strength and durability Receptivity, good reusability, good adsorption and removal effect

Active Publication Date: 2019-12-24
XIAN 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 provide a polymer composite conductive ultrafiltration membrane based on stainless steel mesh, which solves the problems of low control ability of conventional ultrafiltration membranes on pollutants, poor cleaning efficiency, and inability to remove special small molecular substances

Method used

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  • Polymer composite conductive ultrafiltration membrane based on stainless steel mesh and preparation method of ultrafiltration membrane
  • Polymer composite conductive ultrafiltration membrane based on stainless steel mesh and preparation method of ultrafiltration membrane

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preparation example Construction

[0037] The preparation method of the polymer composite conductive ultrafiltration membrane based on stainless steel mesh of the present invention, concrete operation steps are as follows:

[0038] Step 1, carrying out surface pretreatment to the stainless steel mesh and the titanium sheet respectively;

[0039] Step 2, configure the electrochemical mixed solution;

[0040] Step 3: clamp the stainless steel mesh and titanium sheet pretreated in step 1 in the electroplating reactor (such as figure 1 As shown), the stainless steel mesh is placed in the middle as the working electrode, and titanium sheets are placed on both sides of the stainless steel mesh as auxiliary electrodes, and the distance between the titanium plate and the stainless steel mesh is 1cm;

[0041] Then add a calomel saturated electrode as a reference electrode, the working electrode, the auxiliary electrode and the reference electrode are respectively connected to the electrochemical workstation through wi...

Embodiment 1

[0052] Step 1, surface pretreatment of stainless steel mesh and titanium sheet respectively

[0053] Step 1.1: Select a stainless steel mesh with an aperture of 1.5mm, cut it into a size of 7cm×10cm, then cut two titanium plates with the same shape and size as the stainless steel mesh, and polish the surface of the stainless steel mesh and titanium plate with sandpaper;

[0054] Step 1.2: Prepare a NaOH solution with a mass fraction of 10%, soak the stainless steel mesh and the titanium sheet in the NaOH solution respectively, and heat the water bath to 45°C, keep it warm for 25 minutes, and remove the oil on the surface;

[0055] Step 1.3: Take out the stainless steel mesh and titanium sheet soaked in step 1.2, soak and rinse them with clean water for about 5 times, then configure HCl solution with a concentration of 0.1mol / L, soak the rinsed stainless steel mesh and titanium sheet in HCl solution respectively In the middle, the soaking time is 8min to remove the oxide on the...

Embodiment 2

[0066] Step 1, surface pretreatment of stainless steel mesh and titanium sheet respectively

[0067] Step 1.1: Select a stainless steel mesh with an aperture of 1.5mm, cut it into a size of 7cm×10cm, and then cut two titanium plates with the same shape and size as the stainless steel mesh, and polish the surface of the stainless steel mesh and titanium plate with sandpaper;

[0068] Step 1.2: Prepare a NaOH solution with a mass fraction of 10%, soak the stainless steel mesh and titanium sheet in the NaOH solution respectively, and heat the water bath to 55°C, keep it warm for 35min, and remove the oil on the surface;

[0069] Step 1.3: Take out the stainless steel mesh and titanium sheet soaked in step 1.2, soak and rinse them with clean water for about 7 times, then configure HCl solution with a concentration of 0.2mol / L, soak the rinsed stainless steel mesh and titanium sheet in HCl solution respectively In the middle, the soaking time is 12min to remove the oxide on the sur...

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Abstract

The invention discloses a polymer composite conductive ultrafiltration membrane based on stainless steel mesh. The invention uses stainless steel mesh as a reference material, performs electrochemical polymerization with monomer pyrrole solution or monomer aniline solution, and polymerizes a layer of polypyrrole on the surface of the stainless steel mesh or polyaniline. The invention also discloses a preparation method of the ultrafiltration membrane, which includes the following steps: pretreating the stainless steel net and the titanium plate, configuring an electrochemical solution, and plating pyrrole or aniline on the stainless steel net by using an electrochemical coating method to obtain a composite conductive membrane. ultrafiltration membrane. The prepared ultrafiltration membrane has good stability and mechanical strength, and the polypyrrole and polyaniline polymerized on the surface have a certain adsorption effect, which can be used as an adsorbent. When the adsorption is saturated, the conductive membrane is regenerated by elution and activation. Once again, it has adsorption effect, and when there are too many pollutants attached, it is cleaned by electrochemical means. The cleaning efficiency is high and it can be reused.

Description

technical field [0001] The invention belongs to the technical field of membrane method water treatment, and in particular relates to a polymer composite conductive ultrafiltration membrane based on stainless steel mesh, and also relates to a preparation method of the polymer composite conductive ultrafiltration membrane. Background technique [0002] As a common technology in the process of water purification and advanced sewage treatment, organic ultrafiltration membranes have been widely used in the water treatment industry. During the operation of the ultrafiltration membrane, it is inevitably polluted by particles, micelles and some solute molecules, especially soluble organic substances in water, such as polysaccharides, proteins and humus, etc. Even at low concentrations, the pollution caused It can lead to a decrease in the water flux of the membrane, an increase in energy consumption and a shortened service life, which restricts the development of ultrafiltration mem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D67/00B01D69/02B01D69/10B01D61/14B01D71/62B01D71/60
CPCB01D61/145B01D67/0006B01D69/02B01D69/10B01D69/105B01D71/60B01D71/62B01D2325/26
Inventor 张耀中王涛郑兴
Owner XIAN UNIV OF TECH
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