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Germicide used for cleaning reverse osmosis membrane

A technology of reverse osmosis membrane and bactericide, which is applied in the direction of bactericide, biocide, biocide, etc., and can solve the problems of microbial resistance to drugs

Inactive Publication Date: 2019-08-20
XINJIANG DELAND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] For this reason, the present invention provides a kind of bactericide for reverse osmosis membrane cleaning, in order to overcome the problem in prior art that long-term use of a certain bactericide, microorganisms will also produce drug resistance

Method used

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  • Germicide used for cleaning reverse osmosis membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1. Rinse the mixing tank clean, close the discharge valve, add 20% of the isopropanol, 30% of hydroxyethylhexahydro-s-triazine, 5% of isothiazolinone, 4% of glutaraldehyde and the 41% of the above deionized water;

[0018] 2. The stirring speed is 50r / min;

[0019] 3. After all the raw materials are added, stir for 20 minutes to obtain the bactericide for cleaning the reverse osmosis membrane. Example 2

Embodiment 2

[0020] 1. Rinse the mixing tank clean, close the discharge valve, add 30% of the isopropanol, 45% of hydroxyethylhexahydro-s-triazine, 10% of isothiazolinone, 10% of glutaraldehyde and the Said deionized water 5%;

[0021] 2. The stirring speed is 80r / min;

[0022] 3. After all the raw materials are added, stir for 30 minutes to obtain the bactericide for cleaning the reverse osmosis membrane. Example 3

Embodiment 3

[0023] 1. Rinse the mixing tank clean, close the discharge valve, add 26% of the isopropanol, 38% of hydroxyethylhexahydro-s-triazine, 6% of isothiazolinone, 10% of glutaraldehyde and the 20% of the above deionized water;

[0024] 2. The stirring speed is 60r / min;

[0025] 3. After all the raw materials are added, stir for 25 minutes to obtain the bactericide for cleaning the reverse osmosis membrane.

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Abstract

The invention relates to a germicide used for cleaning a reverse osmosis membrane. The germicide comprises the following components, in percentages by weight: 30%-45% of hexahydro-1,3,5-tris(hydroxyethyl)-s-triazine, 5%-10% of isothiazolinone, 4%-10% of glutaraldehyde, 20-30% of isopropyl alcohol, and the balance of deionized water. The germicide provided by the invention is used after on-line andoff-line alkaline cleaning of the reverse osmosis membrane, so that the germicidal effects can be greatly improved, and the germicide has a peeling effect on biological slime on the reverse osmosis membrane; and in the last stage of the on-line cleaning, a small amount of the germicide is added, the germicide can maintain longer germicide action on the reverse osmosis membrane, so that frequencyof biological pollution is reduced.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a bactericide for cleaning reverse osmosis membranes. Background technique [0002] Reverse osmosis technology is the main desalination technology. It has the advantages of high desalination rate, small equipment footprint, and no secondary pollution. It has been used in the reuse of highly polluted wastewater, recycled water, surface water treatment, and drinking water purification. etc. have been widely used and become a very cost-effective treatment unit in water purification technology. Reverse osmosis technology can effectively remove organic substances, colloids, inorganic salts and microorganisms in raw water, and these pollutants trapped on the concentrated water side of the membrane will cause inorganic salt scaling, organic pollution and microbial pollution if they are not cleaned for a long time Membrane fouling, among which microbial fouling is the most destr...

Claims

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Application Information

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IPC IPC(8): B01D65/02A01N43/80A01N35/02A01N43/66A01P1/00A01P3/00
CPCA01N35/02A01N43/66A01N43/80B01D65/022B01D2321/168
Inventor 李菲菲欧阳巧凤周林超
Owner XINJIANG DELAND
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