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Separation film washing agent and using method thereof

A cleaning agent and separation membrane technology, applied in the direction of anion-cation-nonionic surface active compounds, etc., can solve the problems of membrane damage, organic membrane material limitation, etc., and achieve the effect of good compatibility and good cleaning effect.

Inactive Publication Date: 2010-06-16
SHANGHAI FILTER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A major obstacle to acid or alkaline cleaning is that the material of organic membranes is often limited by pH, and too high an acid-base concentration can easily cause irreversible damage to the membrane

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A separation membrane cleaning agent, consisting of surfactants, complexing agents, builders and enzymes, the content and quality of each component are as follows,

[0022] serial number

components

mass (g)

1

Surfactant

30.0

2

complexing agent

5.0

3

builder

60.0

4

enzyme

5.0

[0023] Wherein, surfactant selects sodium alkyl sulfonate for use;

[0024] The complexing agent selects sodium dimercaptopropane sulfonate;

[0025] The builder is selected from the compound of 10g sodium tripolyphosphate and 50g layered sodium silicate;

[0026] Enzyme selects pectinase for use.

[0027] Mix and stir the components mentioned in the above table to make a separation membrane cleaning agent, and add 99900 g of deionized water to prepare a solution with a concentration of 0.1% by mass for cleaning the separation membrane.

[0028] When in use, the cleaning temperature is 15°C, the cleaning...

Embodiment 2

[0030] A separation membrane cleaning agent, consisting of surfactants, complexing agents, builders and enzymes, the content and quality of each component are as follows,

[0031] serial number

components

mass (g)

1

Surfactant

35.0

2

complexing agent

15.0

3

builder

49.0

4

enzyme

1.0

[0032] Wherein, surfactant selects sodium alkyl sulfonate for use;

[0033] Complexing agent selects citric acid for use;

[0034] The builder is selected from the composite of 20g layered sodium silicate and 29g soda ash;

[0035] Enzyme selects xylanase for use.

[0036] Mix and stir the components mentioned in the above table to make a cleaning agent for the separation membrane, and add 33233 g of deionized water to make a solution with a concentration of 0.3% by mass, which is used for cleaning the separation membrane.

[0037] When in use, the cleaning temperature is 20°C, the cleaning time is 30 m...

Embodiment 3

[0040] A separation membrane cleaning agent, consisting of surfactants, complexing agents, builders and enzymes, the content and quality of each component are as follows,

[0041] serial number

components

mass (g)

1

Surfactant

40.0

2

complexing agent

10.0

3

builder

45.0

4

enzyme

5.0

[0042] Wherein, surfactant selects sodium alkylbenzene sulfonate for use;

[0043] Complexing agent selects sodium edetate;

[0044] The builder is selected from the compound of 10g layer sodium silicate and 35g yuanming powder;

[0045] Enzyme selects pectinase for use.

[0046] Mix and stir the components mentioned in the above table to make a separation membrane cleaning agent, add 19,900 g of deionized water, and prepare a solution with a concentration of 0.5% by mass for cleaning the separation membrane.

[0047] When in use, the cleaning temperature is 30°C, the cleaning time is 40min, and the cle...

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PUM

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Abstract

The invention relates to the field of special washing composite, in particular to a separation film washing agent and a using method thereof. The separation film washing agent is characterized by comprising the following components by mass percent concentration: 30-55% of surfactant, 5-20% of complexing agent, 20-65% of builder and 0.1-5% of enzyme. The using method is characterized in that when in use, the washing temperature is 15-50 DEG C, the washing time is 20-40min, and the washing pressure is 0.01-0.3MPa. The washing agent prepared by the invention has good compatibility, good washing effect on various pollutants, and can improve the water flux of the separation film by over 44-200%.

Description

technical field [0001] The invention relates to the field of special cleaning compositions, in particular to a separation membrane cleaning agent and its application method. Background technique [0002] The development and application of separation membranes have had a major impact on human social life and production activities, and have effectively promoted the development of social economy. The application of membrane technology in the biological fermentation industry has achieved significant economic and environmental benefits. However, due to the inevitable existence of membrane fouling, the separation performance of the membrane is continuously reduced during use, and the life of the membrane is shortened, which has become an important obstacle for the application of membrane technology in the fermentation pharmaceutical industry. Problems It is of great significance to study the recovery and regeneration of membrane cleaning. At present, the commonly used membrane c...

Claims

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Application Information

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IPC IPC(8): C11D1/86
Inventor 刘旭红陶锐赖新生肖吉
Owner SHANGHAI FILTER
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