Ultrafiltration membrane alkaline cleaner

An ultrafiltration membrane and cleaning agent technology, applied in membrane technology, semi-permeable membrane separation, chemical instruments and methods, etc., can solve problems such as adverse environmental effects, cumbersome steps, equipment corrosion, etc., to shorten cleaning time and simplify cleaning. Steps, the effect of avoiding corrosion

Inactive Publication Date: 2012-02-08
HEBEI XIETONG ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The existing method for cleaning the ultrafiltration membrane of cologne mash needs to use acid solution and lye solution for two-step cleaning respectively, and the steps are cumbersome
The acidic substances in the acid liquid have a corrosive effect on the equipment and are likely to have adverse effects on the environment

Method used

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  • Ultrafiltration membrane alkaline cleaner
  • Ultrafiltration membrane alkaline cleaner
  • Ultrafiltration membrane alkaline cleaner

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Experimental program
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Embodiment 1～9

[0023] The types of ultrafiltration membranes and the components and mass percentages of alkaline cleaning agents in different embodiments are shown in Table 1. Wherein, the mass percentage of cleaning aid is 100% minus the mass percentage of other components. AES is sodium fatty alcohol polyoxyethylene ether sulfonate, LAS is sodium dodecylbenzene sulfonate, AOS is sodium α-olefin sulfonate, CMC is carboxymethyl cellulose, NTA is sodium nitrilotriacetate, EDTA -2Na is disodium EDTA.

[0024] Table 1

[0025]

[0026]

[0027] The preparation method of the ultrafiltration membrane alkaline cleaning agent is as follows: take the surfactant, alkaline additive, water softener, chelating agent, and cleaning additive according to the formula ratio, and add the above-mentioned components under stirring conditions. In the kettle, fully stir evenly to obtain the ultrafiltration membrane alkaline cleaning agent.

[0028] After the ultrafiltration treatment of the guronic acid ...

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Abstract

The invention discloses an ultrafiltration membrane alkaline cleaner which is suitable for cleaning an ultrafiltration membrane used by filtering gulonic acid mash. The alkaline cleaner comprises the following components in percent by mass: 15-30 percent of surfactant, 3-5 percent of water softening agent, 3-10 percent of chelant, 45-60 percent of alkali assistant and 5-15 percent of cleaning aid. According to the ultrafiltration membrane alkaline cleaner, the cleaning steps can be simplified, the cleaning cost is reduced, the corrosion to equipment is lightened, and the pollution of cleaning waste liquid to the environment can be reduced.

Description

technical field [0001] The invention belongs to the auxiliary field of membrane separation technology, and in particular relates to a cleaning agent for an ultrafiltration membrane suitable for fine filtration of cologne mash. Background technique [0002] Ultrafiltration membrane is a microporous filtration membrane with uniform pore size and rated pore size range of 0.001-0.02 microns. Appropriate pressure is applied to one side of the membrane to screen out solute molecules smaller than the pore size. The industrial application of ultrafiltration membrane is very extensive, and it is used for unit operations such as separation, concentration and purification of biological products, pharmaceutical products and food. [0003] During the use of the ultrafiltration membrane, regular cleaning is required to maintain the permeation flux of the membrane and prolong the service life of the membrane. The cleaning of the ultrafiltration membrane is divided into physical cleaning ...

Claims

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Application Information

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IPC IPC(8): B01D65/06
Inventor 檀文礼赵立新
Owner HEBEI XIETONG ENVIRONMENTAL PROTECTION TECH CO LTD
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