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Cleaning agent for ceramic film and its preparation method

A ceramic membrane and cleaning agent technology, applied in detergent compositions, chemical instruments and methods, surface active detergent compositions, etc., can solve the problems of time-consuming cleaning, membrane fouling, and impact on membrane life, and shorten the cleaning time. time, reduce cleaning frequency, reduce the effect of concentration polarization

Inactive Publication Date: 2006-09-27
JIANGSU JIUWU HITECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the above three types of oily wastewater, the membrane fouling is very serious. It takes too much time to clean through the above methods, the cleaning time is too long and the cleaning intensity is too high, which will not only affect the life of the membrane, but also delay production and cause losses.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The preferred formula of the cleaning agent of the present invention that is preferentially used for cleaning the ceramic membrane of processing alkali refining waste water is as follows (percentage by weight):

[0038] A. Sodium hydroxide 55%

[0039] B. Sodium polyphosphate 10%

[0040] C. Sodium alkylbenzene sulfonate 12%

[0041] D. Diatomaceous earth 2.5%

[0042] E. Sodium silicate 2%

[0043] F. Sodium sulfate 1%

[0044] G. Sodium carbonate 15%

[0045] H. Hydroxymethylcellulose 2%

[0046] I. Tetrasodium ethylenediaminetetraacetic acid 0.5%

[0047] Preparation method: In a corrosion-resistant reactor with stirring and grinding, sequentially add sodium hydroxide, sodium polyphosphate, sodium alkylbenzene sulfonate, diatomaceous earth, sodium silicate, sodium sulfate, sodium carbonate, hydroxyl Methylcellulose and tetrasodium ethylenediaminetetraacetic acid are stirred at room temperature for 4 to 8 hours, and ground evenly, which is the granular cleaning...

Embodiment 2

[0049] Another preferred formula of the cleaning agent of the present invention that is preferentially used for the cleaning of the ceramic membrane of processing alkali refining waste water is as follows (percentage by weight):

[0050] A. Sodium hydroxide 62%

[0051] B. Sodium polyphosphate 5%

[0052] C. Sodium alkylbenzene sulfonate 12%

[0053] D. Diatomaceous earth 3%

[0054] E. Sodium silicate 3%

[0055] G. Sodium carbonate 15%

[0056] Preparation method: In a corrosion-resistant reactor with stirring and grinding, sequentially add sodium hydroxide, sodium polyphosphate, sodium alkylbenzene sulfonate, diatomaceous earth, sodium silicate and sodium carbonate, and stir at room temperature After 4 to 8 hours, the grinding is uniform, which is the granular cleaning agent of the present invention.

Embodiment 3

[0058] The preferred formula of the cleaning agent of the present invention that is preferentially used for cleaning the ceramic film of the cold-rolled emulsion is as follows (percentage by weight):

[0059] A. Sodium hydroxide 50%

[0060] B. Sodium polyphosphate 12%

[0061] C. Sodium alkylbenzene sulfonate 10%

[0062] D. Diatomaceous earth 6%

[0063] E. Sodium silicate 3%

[0064] F. Sodium sulfate 2%

[0065]G. Sodium carbonate 15%

[0066] H. Hydroxymethylcellulose 2%

[0067] Preparation method: In a corrosion-resistant reactor with stirring and grinding, sequentially add sodium hydroxide, sodium polyphosphate, sodium alkylbenzene sulfonate, diatomaceous earth, sodium silicate, sodium sulfate, sodium carbonate and hydroxyl Methylcellulose, stirred at room temperature for 4 to 8 hours, and ground evenly, is the granular cleaning agent of the present invention.

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PUM

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Abstract

The invention discloses a ceramic film abluent and preparing method, which comprises the following parts: 50-75 percent NaOH, 3-15 percent sodium polyphosphate, 5-15 percent sodium alkyl benzene sulphonate, 2-8 percent diatomite, 1-8 percent liquid glass, 0-5 percent sodium sulfate, 0-20 percent sodium carbonate, 0-5 percent methylol cellulose and 0-5 percent ethylene diamine tetraacetic acid tetrasodium salt. These components are added int the stirring and grinding corrosion-proof reactor sequently, which is stirred and grinded evenly at room temperature at 4-8 h to obtain the product. The invention shortens the system cleaning time and reduces the system consumption, which doesn't damage ceramic film.

Description

technical field [0001] The invention relates to a cleaning agent suitable for ceramic membranes, in particular to a cleaning agent suitable for cleaning ceramic membranes for filtering oil and alkali refining wastewater, steel rolling emulsion and metal cutting wastewater. Background technique [0002] Alkali refining is a process in the oil refining process. Domestic oil factories generally adopt two production processes, batch and continuous, that is, soapstock is produced by neutralizing free fatty acids in oil with alkali, and at the same time absorbing some other impurities and centrifuging them from the oil Separation, so as to realize the refining of crude oil. The amount of washing wastewater discharged during the washing process is about 100-150kg / t. Washing wastewater contains impurities such as oil, fatty acid salts, and suspended solids, among which the oil content is as high as 1 to 3%. [0003] The ceramic membrane can effectively recover the oil in the washi...

Claims

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Application Information

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IPC IPC(8): C11D1/22B01D65/06B01D71/02
Inventor 柏文静曹友亮
Owner JIANGSU JIUWU HITECH
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