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Ultrafiltration membrane cleaning agent containing oxidizing agent and preparation method thereof

A technology of ultrafiltration membrane and cleaning agent, applied in the field of ultrafiltration membrane cleaning, can solve the problems of high price, poor pertinence, inability to remove iron elements, etc., and achieve the effects of low cost, strong pertinence and simple preparation

Inactive Publication Date: 2018-02-09
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the cleaning agents used by various enterprises cannot remove iron, which is not only expensive, but also poorly targeted

Method used

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  • Ultrafiltration membrane cleaning agent containing oxidizing agent and preparation method thereof
  • Ultrafiltration membrane cleaning agent containing oxidizing agent and preparation method thereof
  • Ultrafiltration membrane cleaning agent containing oxidizing agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] This embodiment provides an ultrafiltration membrane cleaning agent containing an oxidizing agent,

[0017] Step 1, calculated according to the percentage content of each material component: tetrasodium edetate 0.5%, sodium tripolyphosphate 1%, sodium dodecylsulfonate 0.5%, potassium persulfate 2%, deionized water 96 %, you can;

[0018] Step 2, heating the solution obtained in step 1 to 40°C, and stirring at 900rpm for 15min;

[0019] Step 3, adjust the pH value of the solution obtained in step 2 at 2, and the measured results are shown in the attached figure 2 The first histogram in . and from figure 1 It can be seen that the content of iron element decreased significantly, from image 3 It can be seen that the pollutants are significantly reduced after cleaning.

Embodiment 2

[0021] Change the step 3 in the embodiment 1, the obtained solution is modulated pH at 3, other steps are the same operation method as the embodiment 1, the measured results are shown in the attached figure 2 The second histogram in .

Embodiment 3

[0023] Change the step 3 in the embodiment 1, the obtained solution is modulated pH at 4, other steps are the same operation method as the embodiment 1, the measured results are shown in the attached figure 2 The third histogram in .

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Abstract

The invention discloses an ultrafiltration membrane cleaning agent containing an oxidizing agent and a preparation method thereof. The cleaning agent is prepared from ethylenediamine tetraacetic acidtetrasodium salt, sodium tripolyphosphate, sodium dodecyl sulfate, potassium peroxodisulfate and deionized water according to a certain proportion. The cleaning agent disclosed by the invention is easy to prepare, is high in flux recovery rate, is high in pertinence, is efficient, is low in cost, and is particularly suitable for cleaning of membrane fouling produced in the decolorization process of an ultrafiltration membrane in an amino acid production technology.

Description

technical field [0001] The invention relates to the technical field of ultrafiltration membrane cleaning, in particular to an ultrafiltration membrane cleaning agent containing an oxidant and a preparation method thereof. Background technique [0002] In the amino acid production process, it is often accompanied by the formation of a large number of pigments, which interfere with the analysis of amino acids and affect the purity and color of the product, so the pigment must be removed during the preparation process. It is the trend of the times to use membrane separation to decolorize, but there is a problem of membrane fouling, and the best way to solve the problem of membrane fouling is chemical cleaning. Through the analysis of pollutants, it contains iron element. At present, the cleaning agents used by various enterprises cannot remove iron elements, which are not only expensive, but also poorly targeted. Therefore, developing a cleaning agent with high flux recovery ...

Claims

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Application Information

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IPC IPC(8): B01D65/06
CPCB01D65/02B01D2321/168
Inventor 周勇邵俊王书浩高从堦
Owner ZHEJIANG UNIV OF TECH