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Filter membrane cleaning agent and cleaning technology

A cleaning agent and filter membrane technology, applied in the field of dairy whey production, can solve the problems of increasing osmotic resistance, increasing losses, reducing membrane filtration flux, etc. Effect

Inactive Publication Date: 2011-07-27
滕国新
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual process application, the two major factors of concentration polarization and membrane fouling restrict the promotion and application of membrane technology.
Contamination will increase the osmotic resistance, reduce the membrane filtration flux, and deteriorate the membrane separation performance, which will lead to a decrease in the yield of the target product and increase the loss

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: (a kind of membrane cleaning agent and cleaning technology)

[0018] After 5000kg of whey is concentrated with a filter membrane, the concentrated whey liquid remaining in the filter membrane is drained, and the filter membrane and pipeline are first rinsed with clean water: the water quality is clean and the solids are invisible to the naked eye, the water temperature is 15-25°C, and after 5 minutes of operation Rinse with alkaline water, the concentration of sodium hydroxide is 0.5%, the pH is about 10-12, 0.5% sodium hexametaphosphate, 0.01% Tween 80, cycle for 5 minutes, and the temperature is 25-30 ° C, mainly to remove the attached on the membrane. fat etc. Then rinse with clean water, the water quality is clean and the solid matter is invisible to the naked eye, the water temperature is 15-25°C, and it runs for 5 minutes. Pickling: Use 0.5% citric acid, pH 2-3, circulate for about 5 minutes, rinse with clean water, the water quality is clean, no so...

Embodiment 2

[0019] Embodiment 2: (a kind of membrane cleaning agent and cleaning technology)

[0020] After 10,000kg of whey is concentrated with a filter membrane, the concentrated whey liquid remaining in the filter membrane is drained, and the filter membrane and pipeline are first rinsed with clean water: the water quality is clean and the solids are invisible to the naked eye, the water temperature is 15-25°C, and after 5 minutes of operation Rinse with alkaline water, the concentration of sodium hydroxide is 0.5%, pH10-12, sodium hexametaphosphate 0.5%, sodium dodecylsulfonate SDS 0.01%, Tween 800.01%, cycle 20min, temperature 25-30℃ , mainly to remove the fat attached to the membrane, etc. Then rinse with clean water, the water quality is clean and the solid matter is invisible to the naked eye, the water temperature is 15-25°C, and it runs for 5 minutes. Pickling: Use 0.5% citric acid, pH 2-3, circulate for about 15 minutes, rinse with clean water, the water quality is clean, no ...

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PUM

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Abstract

The invention belongs to the production technology of whey of dairy products, and particularly relates to a filter membrane cleaning agent which utilizes the comprehensive effects of biological and chemical preparation for cleaning a filter membrane, and cleaning the residual whey pollutants adhered on the surface of the filter membrane, so as to improve the transparent quantity of the membrane, improve the production efficiency, and prolong the service life of the membrane.

Description

technical field [0001] The invention belongs to the production technology of whey of dairy products, and specifically relates to a method of using the combined action of biological and chemical agents to clean the filter membrane to remove the whey residual pollutants attached to the filter membrane, to increase the permeability of the membrane, and to improve Increase production efficiency and prolong the service life of the membrane. Background technique [0002] Membrane separation technology is a new type of high-efficiency separation technology, which has the advantages of operating at room temperature, less loss of nutrients, simple equipment, convenient operation, no phase change, no chemical change, strong selectivity, high separation efficiency and energy saving. According to the size of membrane pore size, membrane separation technology can be further subdivided into microfiltration, ultrafiltration, nanofiltration, reverse osmosis, etc. Beginning in 1965, new var...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D65/06
Inventor 滕国新
Owner 滕国新