A kind of preservation method of ultrafiltration membrane module

A storage method and ultrafiltration membrane technology, applied in the field of hollow fiber membranes, can solve problems affecting water flux and retention rate, unfavorable transportation, and increased weight of membrane modules, etc., to achieve enhanced sterilization and disinfection effects, good antibacterial and moisturizing effects, Apply Promising Effects

Active Publication Date: 2022-04-22
WUHAN AQUCELL MEMBRANE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Ultrafiltration membrane is a working structure that uses pressure difference and pore size difference to separate media. It is mainly used in water treatment, biopharmaceutical industry and food industry. The working performance of ultrafiltration membrane is determined by the membrane pores on its surface and the membrane material. It is determined by itself. In the prior art, the ultrafiltration membrane is mainly prepared by the phase inversion method, so the surface of the membrane filament is wet after production. When the water dries, the membrane pores on the surface of the membrane filament will shrink, affecting the water flux and Therefore, ultrafiltration membrane modules need to be stored in a wet state after production, and too wet will greatly increase the overall weight of the membrane module, which is not conducive to transportation
[0003] In the existing preservation technology, most of the water is properly reduced by adding humectant, but the conventional humectant is organic matter, in a humid environment, bacteria are easy to grow in the organic matter, and the amount of water reduction is still small, and the weight of the membrane module overweight

Method used

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  • A kind of preservation method of ultrafiltration membrane module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] First immerse the ultrafiltration membrane module in a sodium hypochlorite solution of 50ppm available chlorine, soak for 2 hours, then soak the ultrafiltration membrane module in a sodium gluconate solution with a mass concentration of 10%, and obtain a pore-preserving treatment after soaking for 2 hours Ultrafiltration membrane module, and then fix the ultrafiltration membrane module with pore-preserving treatment on the centrifuge for centrifugal drying treatment. When the centrifugal drying is done until no obvious liquid flows out, stop the centrifugation to obtain the dried ultrafiltration membrane module. The ultrafiltration membrane module is placed in a closed container, fumigated with 100°C water vapor for 10 minutes, the ultrafiltration membrane module is taken out, and after cooling, it is vacuumed with a double-layer PE packaging bag and sealed for storage.

Embodiment 2

[0028] First immerse the ultrafiltration membrane assembly in a sodium hypochlorite solution of 60ppm available chlorine for 3 hours, then soak the ultrafiltration membrane assembly in a sorbitol solution with a mass concentration of 20%, and obtain a pore-preserving treatment after 3 hours of immersion treatment. Then fix the pore-preserving ultrafiltration membrane assembly on the centrifuge for centrifugal drying treatment. When the centrifugal drying is done until no obvious liquid flows out, stop the centrifugation to obtain the dried ultrafiltration membrane assembly. The dried The ultrafiltration membrane module is placed in a closed container, fumigated with 120°C water vapor for 20 minutes, the ultrafiltration membrane module is taken out, and after cooling, it is vacuumed with a double-layer PE packaging bag and sealed for storage.

Embodiment 3

[0030] First immerse the ultrafiltration membrane assembly in a sodium hypochlorite solution of 70ppm available chlorine, soak for 4 hours, then soak the ultrafiltration membrane assembly in a xylitol solution with a mass concentration of 30%, and obtain a pore-preserving treatment after soaking for 4 hours. Ultrafiltration membrane module, and then fix the ultrafiltration membrane module with pore-preserving treatment on the centrifuge for centrifugal drying treatment. When the centrifugal drying is done until no obvious liquid flows out, stop the centrifugation to obtain the dried ultrafiltration membrane module. The ultrafiltration membrane module was placed in a closed container, fumigated with Litsea cubeba oil vapor at 140°C for 10 minutes, and the ultrafiltration membrane module was taken out. After cooling, it was vacuumed with a double-layer PE packaging bag and sealed for storage.

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Abstract

The present invention proposes a preservation method for ultrafiltration membrane components, comprising: soaking the ultrafiltration membrane components in a bactericide for treatment, then soaking the sterilized ultrafiltration membrane components in an aqueous solution of a pore-preserving agent for treatment, and then drying the ultrafiltration membrane components by centrifugation , to remove excess water, and then steam fumigation to achieve the purpose of secondary disinfection and weight reduction, and finally vacuum-sealed packaging to make the membrane module easy to store. Preservation by adopting the method of the invention can effectively reduce the weight of the membrane module, improve the storage performance and appearance and smell of the membrane module at the same time, and has good application prospect.

Description

technical field [0001] The invention relates to the technical field of hollow fiber membranes, in particular to a preservation method for ultrafiltration membrane modules. Background technique [0002] Ultrafiltration membrane is a working structure that uses pressure difference and pore size difference to separate media. It is mainly used in water treatment, biopharmaceutical industry and food industry. The working performance of ultrafiltration membrane is determined by the membrane pores on its surface and the membrane material. It is determined by itself. In the prior art, the ultrafiltration membrane is mainly prepared by the phase inversion method, so the surface of the membrane filament is wet after production. When the water dries, the membrane pores on the surface of the membrane filament will shrink, affecting the water flux and Therefore, ultrafiltration membrane modules need to be stored in a wet state after production, and too wet will greatly increase the overa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D65/00B01D65/02
CPCB01D65/02B01D65/022B01D65/00B01D67/0097
Inventor 陈泉学
Owner WUHAN AQUCELL MEMBRANE TECH
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