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 limit

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] A separation membrane cleaning agent, composed of surfactants, complexing agents, builders and enzymes. The content and quality of each component are as follows:

[0022] Serial number

[0023] Among them, the surfactant is sodium alkyl sulfonate;

[0024] The complexing agent is sodium dimercaptopropane sulfonate;

[0025] The builder is a combination of 10g sodium tripolyphosphate and 50g sodium silicate;

[0026] The enzyme is pectinase.

[0027] Mix and stir the components described in the above table to prepare a separation membrane cleaning agent, add 99,900 g of deionized water, and prepare a solution with a mass percentage concentration of 0.1% for cleaning the separation membrane.

[0028] When in use, the cleaning temperature is 15℃, the cleaning time is 20min, and the cleaning pressure is 0.01MPa.

Example Embodiment

[0029] Example 2

[0030] A separation membrane cleaning agent, composed of surfactants, complexing agents, builders and enzymes. The content and quality of each component are as follows:

[0031] Serial number

[0032] Among them, the surfactant is sodium alkyl sulfonate;

[0033] Citric acid is selected as the complexing agent;

[0034] The builder is a composite of 20g sodium silicate and 29g soda ash;

[0035] The enzyme is xylanase.

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

[0037] When in use, the cleaning temperature is 20℃, the cleaning time is 30min, and the cleaning pressure is 0.1MPa.

[0038] The separation membrane cleaning agent solution prepared in this embodiment is used to clean the separation membrane. The water flux of the separation membrane before cleaning is 400 ml / min...

Example Embodiment

[0039] Example 3

[0040] A separation membrane cleaning agent, composed of surfactants, complexing agents, builders and enzymes. The content and quality of each component are as follows:

[0041] Serial number

[0042] Among them, the surfactant is sodium alkylbenzene sulfonate;

[0043] The complexing agent is sodium ethylenediaminetetraacetate;

[0044] The builder is a combination of 10g layer of sodium silicate and 35g sodium sulfate;

[0045] The enzyme is pectinase.

[0046] Mix and stir the components described in the above table to prepare a separation membrane cleaning agent, add 19900 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℃, the cleaning time is 40min, and the cleaning pressure is 0.15MPa.

[0048] The separation membrane cleaning agent solution prepared in this embodiment is used to clean the separation membrane. The water flux of the separati...

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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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