Membrane component preservation method

A preservation method and technology of membrane components, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of different colors, easy to produce peculiar smell, and performance degradation.

Inactive Publication Date: 2014-06-25
WUHAN AQUCELL MEMBRANE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problems and defects in the pr

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0012] Example 1

[0013] Take 200 4-inch modules as a batch. First, soak the membrane module in a sodium hypochlorite solution with a mass percentage of 10 ppm for 30 minutes. At the same time, non-absorbent NaCl is formulated into an aqueous solution with a concentration of 20% by mass as a protective solution. The membrane module is completely immersed in the protective solution for 0.5 hours and then taken out. Then simply control the protective liquid of the membrane module to dry, dry the exterior, and store it in a sealed package.

[0014] Test after one year of storage. The quality of 200 membrane modules decreased by 40% on average (although it was sealed and stored), and the membrane surface had no peculiar color or smell. The flux of pure water at the first instant was reduced by 20% compared to before storage, but the flux was completely restored after 5 minutes of water flow. Using reverse osmosis water as raw water, flushing for 1 minute, 4 minutes after making w...

Example Embodiment

[0015] Example 2

[0016] Take 200 4-inch modules as a batch. First, soak the membrane module in a sodium hypochlorite solution with a mass percentage of 10 ppm for 30 minutes. At the same time with absorbent anhydrous CaCl 2 It is formulated into an aqueous solution with a concentration of 20% by mass as a protective solution. The membrane module is completely immersed in the protective solution for 60 minutes and then taken out. Then simply control the protective liquid of the membrane module to dry, dry the exterior, and store it in a sealed package.

[0017] Test after one year of storage. The quality of 200 membrane modules decreased by 5% on average, and the membrane surface had no peculiar color or smell. The liquid in the membrane cavity was collected and tested for E. coli and the total number of colonies, but none was detected. The flux of pure water at the first instant is the same as before storage, with no significant difference. Using reverse osmosis water as ra...

Example Embodiment

[0022] Example 3

[0023] Take 200 4-inch modules as a batch. First, soak the membrane module in a sodium hypochlorite solution with a mass percentage of 10 ppm for 70 minutes. At the same time with absorbent anhydrous MgSO 4 It is formulated into an aqueous solution with a concentration of 20% by mass as a protective solution. The membrane module is completely immersed in the protective solution for 30 minutes and then taken out. Then simply control the protective liquid of the membrane module to dry, dry the exterior, and store it in a sealed package.

[0024] One year later, the residual liquid in the filter element of the membrane module was taken for testing, and E. coli and the total number of colonies were not detected. The quality of 200 membrane modules dropped by an average of 5%, the pure water flux was increased by an average of 10% compared with the initial test, and the rejection rate of bovine serum albumin (BSA) met the production standard. Use tap water as raw ...

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PUM

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Abstract

The invention relates to a membrane component preservation method. The method is characterized by comprising the following steps: (1) performing sterilizing pretreatment on a membrane component; (2) soaking the membrane component in an inorganic salt solution with the mass concentration of 15-50 percent for 0.5-2 hours; and (3) simply draining to dryness after the membrane component is taken out, wiping the surface to be dry, packaging, sealing and preserving. The traditional combined solution of glycerinum and bacteriostatic agent is replaced by using the inorganic salt solution, and the membrane is subjected to a wet preservation method. The membrane component preserved by the method is easily cleaned, does not have special colors or odors, is stable in performance during long-term storage and is safer without bacterial growth. Meanwhile, when a similar effect is achieved, the cost of the method is 10-50 percent of that in a traditional method.

Description

technical field [0001] The invention relates to a preservation method of a membrane module, which belongs to the technical field of membranes. Background technique [0002] Since the 1990s, membrane technology has been greatly developed. At present, a large number of literature reports and patent materials on membrane filament formulations and membrane applications can be found. For example, the patent number CN201220086901.3 paint ultrafiltration system is about the application of membrane modules in paint, and CN200580035012.7 is about the membrane formulation. In the process of membrane technology industrialization, in addition to membrane filament formulation and component application, any other link will affect product performance, cost, production capacity, etc., such as potting technology, cutting technology, preservation technology, etc. For these industrialized technologies, the general information is very little or far less rich than the membrane formulation and m...

Claims

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Application Information

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IPC IPC(8): B01D65/00B01D65/02
Inventor 陈泉学郝艳杰庞兵
Owner WUHAN AQUCELL MEMBRANE TECH
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