Dry-state preservation method for ultra-filtration membrane component

A preservation method and ultrafiltration membrane technology, which is applied to the preservation of ultrafiltration membrane modules, aiming at the field of dry preservation of ultrafiltration membrane modules, can solve the problem that cannot meet the needs of safe storage and convenient transportation of ultrafiltration membrane modules at the same time, and the material of ultrafiltration membranes Strict requirements, cumbersome handling and other issues, to achieve the effect of reducing transportation difficulty, low cost, and convenient cost

Inactive Publication Date: 2012-10-03

SHANDONG ZHAOJIN MOTIAN

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Problems solved by technology

This method avoids the problem of difficult transportation caused by the first method, but it has strict requirements on the material of the ultrafiltration membrane, cumbersome handling, and is only suitable for unused ultrafiltratio...

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Abstract

The invention relates to a dry-state preservation method for an ultra-filtration membrane component, belonging to the technical field of the ultra-filtration membrane component. The dry-state preservation method for the ultra-filtration membrane component comprises three main parts of sterilization, prevention of corrosion and mildew as well as algae, and moisturizing and sequentially comprises the following steps of: a. preparing a sterilization solution, and washing the ultra-filtration membrane component; B. preparing an anticorrosion moisturizing solution, injecting the anticorrosion moisturizing solution into the ultra-filtration membrane component for soaking a membrane filament; and C. pouring out the anticorrosion moisturizing solution in the ultra-filtration membrane component, and sealing the ultra-filtration membrane component. The dry-state preservation method ensures the performance of the ultra-filtration membrane component, simultaneously reduces the transportation difficulty caused by the increasing of weight due to the injection of a protection solution and is an effectively convenient low-cost dry-state preservation method for the ultra-filtration membrane component. According to the dry-state preservation method, the quality of the ultra-filtration membrane component is reduced on the basis that the performance of the ultra-filtration membrane component is not affected, thereby reducing the transportation cost of the ultra-filtration membrane component.

Application Domain

Semi-permeable membranes

Technology Topic

Environmental chemistryFiltration membrane +2

Image

Examples

Experimental program(3)

Example

[0022] Embodiment (1):

[0023] A dry state preservation method for an ultrafiltration membrane component. The preserved ultrafiltration membrane component is made of internal pressure polysulfone material, and the molecular weight cut-off is 67,000. at water temp 25 o C. Under the operating pressure of 0.1MPa, the ultrafiltration water flux is 150LMH (liter/square meter/hour).

[0024] Before packaging after production, install the ultrafiltration membrane module on a small ultrafiltration equipment, configure a sufficient amount of sodium hypochlorite sterilization solution, the concentration is 100ppm (calculated as available chlorine), and run at room temperature for 5 minutes under the operating pressure of 0.1MPa , sterilize the components.

[0025] The ultrafiltration membrane module was fully cleaned with ultrafiltration water at room temperature, and the operating pressure was 0.1MPa for 2 hours.

[0026] Remove the ultrafiltration membrane module from the equipment, and seal the water inlet and concentrated water with rubber stoppers. The ultrafiltration aqueous solution containing BIT-10 (1,2-benzisothiazolin-3-one) and glycerol with a concentration of 0.5wt.% and 20wt.% was prepared, and the ultrafiltration membrane module was injected into the ultrafiltration membrane module from the water outlet. The filter element is full. Seal the outlet hole of the ultrafiltration membrane module with a rubber stopper, and let it stand at room temperature for 24 hours to fully wet the ultrafiltration membrane.

[0027] Remove the rubber plug that blocks the water outlet of the ultrafiltration membrane module, pour out the anti-corrosion wetting solution, and seal the water outlet with the rubber plug again. Pack and store.

[0028] at room temperature (10~30 o C), placed for 1 year.

[0029] Except for the packaging, the appearance of the end face of the ultrafiltration membrane module has not changed, and the ultrafiltration membrane module has no putrid smell such as odor.

[0030] The ultrafiltration membrane module was tested at a water temperature of 25 o C. Under the operating pressure of 0.1MPa, the ultrafiltration water flux is 153LMH (liter/square meter/hour). The molecular weight cutoff was 67000, and the ultrafiltration performance did not change. Ultrafilters are effectively preserved.

Example

[0031] Embodiment (two)~(four):

Example Embodiment

[0032] Embodiments (2), (3), (4) The actual operation refers to Embodiment (1), and the specific detailed parameters are described in Table 1, as follows.

[0033] Table 1. Implementation parameters of dry-state membrane preservation method for ultrafiltration membrane modules

[0034]

[0035] Note*: At water temperature 25 o C, test with ultra-filtered water under the operating pressure of 0.1MPa.

[0036] The ultrafiltration membrane module operated with the above parameters has no change in ultrafiltration performance after testing. Ultrafilters are effectively preserved.

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Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Convenience cost
Reduce the difficulty of transportation

Dry-state preservation method for ultra-filtration membrane component

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Image

Examples

Example

Example

Example Embodiment

PUM

Description & Claims & Application Information

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