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Bactericide for reverse osmosis membrane and method for preparing the same

A technology of reverse osmosis membrane and bactericide, which is applied in the field of bactericide for reverse osmosis membrane and its preparation, which can solve the problems of increasing the amount of bactericide, increasing the cost of medicament, and the development of drug resistance of microorganisms, and achieves the best killing effect. Excellent bactericidal and algae-killing effect and improved bactericidal and algae-killing ability

Inactive Publication Date: 2010-01-20
TIANJIN CHEM RES & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, long-term use of a fungicide will cause microorganisms to develop drug resistance, which will increase the dosage of the fungicide, increase the cost of the medicine, and have no obvious killing effect on iron bacteria and sulfate-reducing bacteria in water.

Method used

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  • Bactericide for reverse osmosis membrane and method for preparing the same
  • Bactericide for reverse osmosis membrane and method for preparing the same
  • Bactericide for reverse osmosis membrane and method for preparing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] At room temperature, 200 grams of reverse osmosis product water, 100 grams of 1,3-propanediol, and 50 grams of 2,2-dibromo-3-nitrilopropionamide were added to the reactor and stirred for 20 minutes, and then 60 grams were added successively. gram of bromonitro compound, 60 grams of isothiazolinone stock solution and stirred for 20 to 30 minutes to prepare the fungicide of the present invention.

Embodiment 2

[0034] According to the bactericide compounded in Example 1, the number of initial bacteria is 6×10 5 1 / ml of water samples were used for sterilization experiment, and the killing effect is shown in Table 1.

[0035] Table 1. The effect of fungicides for reverse osmosis membranes on killing heterotrophic bacteria in water

[0036] Fungicide / mgL -

[0037] According to the data listed in Table 1, when the bactericide dosage is 40mg / L, the bactericidal rate reaches 100%.

Embodiment 3

[0039] When the bactericide of the present invention is 2% isothiazolinone, other conditions are constant, along with 2, the influence of bactericide on the bactericidal effect of the weight content variation of 2-dibromo-3-nitrilopropionamide is as table 2 shown

[0040] Table 2 The impact of different concentrations of 2,2-dibromo-3-nitrilopropionamide on the bactericidal effect in the bactericide for reverse osmosis membrane

[0041] 2,2-Dibromo-3-nitrilo

Propionamide %

Bactericide Concentration for Reverse Osmosis Membrane

mg / L

Sterilization rate%

2

40

88

4

40

96

6

40

98

8

40

99

10

40

100

[0042] Note: The total number of blank heterotrophic bacteria is 5×10 5 pcs / ml

[0043] It can be seen from Table 2 that as the concentration of 2,2-dibromo-3-nitrilopropionamide increases, the bactericidal ef...

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Abstract

The invention relates to a disinfectant used in anti-penetrate film and relative preparing method. It is characterized in that: said disinfectant is formed by C4H4CLNOS C4H5NOS, bromine nitrogen isothiazole, bromine nitro compound, solvent and water. In the room temperature that under 50Deg. C, adding deionized water or anti-penetrate water; adding solvent into reaction kettle; adding bromine nitrogen isothiazole to be mixed and dissolved; adding bromine nitro compound; and adding C4H4CLNOS C4H5NOS to be mixed for 20-30mins.

Description

technical field [0001] The invention belongs to the technical field of reverse osmosis membranes for water treatment, and in particular relates to a bactericide for reverse osmosis membranes and a preparation method thereof. The bactericide can also be applied in the field of industrial circulating cooling water. Background technique [0002] The reverse osmosis membrane (RO) device can remove various impurities such as inorganic salts, organic matter, colloids, microorganisms, etc. in water, and has energy saving, no environmental pollution (ion exchange desalination device, generated by acid-base regeneration waste liquid), easy automatic control It has many advantages and is widely used, especially in power plant boiler feed water, electronic industry ultra-pure water, pharmaceutical industry, cosmetic industry pure water, and drinking pure water that has flourished in recent years. However, microbial contamination of RO membranes is one of the main problems plaguing its...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D65/02A01N43/80
Inventor 周伟生
Owner TIANJIN CHEM RES & DESIGN INST
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