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Bromine-type sterilizing agent

A bactericide and bromine-based technology, applied in the field of bromine-based bactericides, can solve the problems of reduced effect and loss of bactericidal activity, etc., and achieve the effects of fast sterilization speed, improved bactericidal effect, and high bactericidal rate

Inactive Publication Date: 2015-05-27
QINGDAO WATER WORLD ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bromine fungicides are less affected by the pH value and are suitable for pH values ​​in the range of 7.0 to 9.0, while chlorine fungicides are significantly less effective when the pH value is greater than 7.5
When there is ammonia nitrogen in the system, bromine fungicides and the bromamine formed by them still have bactericidal activity, while chlorine fungicides form chloramines with ammonia nitrogen, which loses the bactericidal activity and the effect is significantly reduced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 2,2-dibromo-3-cyanopropylamine (DBNPA) 20 parts

[0016] Acid or alkali in moderation.

[0017] Preparation scheme: at room temperature, use acid or alkali to adjust the pH value of the wastewater to 6-9, then add bromine fungicide DBNPA according to the formula, and treat for 5-48 hours.

[0018] In the sterile system, DBNPA will not accelerate the corrosion of the electrode. In the bacterial system, it inhibits the cathodic process of the electrode reaction by interacting with bacteria and their metabolites, iron-sulfur compounds, and the bactericide in the culture medium participates in the formation of the adsorption film. , thereby reducing microbial corrosion.

Embodiment 2

[0020] 2,2-dibromo-3-cyanopropylamine (DBNPA) 10 parts

[0021] Acid or alkali in moderation.

[0022] The preparation scheme is the same as above.

[0023] The dosage of DBNPA is small, adding 5~15mg / l can effectively control the growth of bacteria, the sterilization rate can reach more than 99%, and can effectively kill iron bacteria and sulfate reducing bacteria. The recommended concentration is 10mg / l.

Embodiment 3

[0025] 2,2-dibromo-3-cyanopropylamine (DBNPA) 14 parts

[0026] Acid or alkali in moderation.

[0027] The preparation scheme is the same as above.

[0028] The bactericide of the present invention can synergize chlorine and bromine oxidizing bactericides, and greatly enhance the peeling effect, and can effectively reduce the corrosion effect of halogen bactericides on metal pipelines.

[0029] 2,2-Dibromo-3-cyanopropylamine (DBNPA) is an environmentally friendly bactericide, algicide, and fungicide, which can be rapidly decomposed into non-toxic carbon dioxide, ammonia, and bromide ions in the environment. DBNPA is efficient, safe, harmless to the human body, has no irritating odor, and does not pollute the environment. New bromine fungicides have been widely used in many fields such as circulating water treatment, swimming pool, papermaking, etc. abroad, but they are still in their infancy in China and need to be widely developed in application fields. It has good economi...

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PUM

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Abstract

The invention discloses a bromine-type sterilizing agent being composed of 2,2-dibromo-3-nitrile propylamine (DBNPA), and an acid or an alkali. The bromine-type sterilizing agent is prepared through following steps: at room temperature, regulating the pH value of waste water with the acid or the alkali to 6-9, adding the DBNPA according to a formula, and treating the waste water for 5-48 h. The bromine-type sterilizing agent is excellent in economic benefit and environmental protective benefit. An addition amount of the DBNPA per time is only 10 mg / L, which is reduced in cost by 80% when compared with other sterilizing agents. The 2,2-dibromo-3-nitrile propylamine (DBNPA) is an environmental-friendly sterilizing agent which can kill bacteria, alga and fungus. The DBNPA can be quickly decomposed into carbon dioxide, ammonia gas and bromide ion which are toxic-free in environment.

Description

technical field [0001] The invention relates to a fungicide, in particular to a brominated fungicide. Background technique [0002] In the industrial water circulation system, as the cooling water is concentrated, the reproduction of microorganisms will be intensified. Once the microorganisms are not well controlled, there are mainly two problems. One aspect is microbial corrosion, which can be manifested as severe uniform corrosion, or crevice corrosion and stress corrosion cracking; the other is the problem of microbial slime, which will not only reduce the cooling effect of heat exchangers and cooling towers, but also deteriorate Water quality will also reduce the corrosion inhibition effect of water quality stabilizer. In order to inhibit and kill microorganisms and algae, the method of adding bactericide and algicide is often used. [0003] In order to meet the future development needs of fungicides, a fungicide 2,2-dibromo-3-cyanopropylamine (DBNPA) was synthesized,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N37/34A01P1/00C02F1/50
Inventor 陈婷绍星红
Owner QINGDAO WATER WORLD ENVIRONMENTAL PROTECTION TECH
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