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A kind of composite bacteria and algae inhibitor and application thereof

A technology of compound bacteria and algae and inhibitors, which is applied in the direction of application, herbicides, algicides, biocides, etc., can solve the problems of undisclosed application fields and use concentrations of biocides, and achieve the promotion of green development and low use concentration , The effect of easy access to raw materials

Active Publication Date: 2016-06-08
TIANJIN SEA WATER DESALINATION & COMPLEX UTILIZATION INST STATE OCEANOGRAPHI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application fields and usage concentrations of the above two biocides are not disclosed

Method used

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  • A kind of composite bacteria and algae inhibitor and application thereof
  • A kind of composite bacteria and algae inhibitor and application thereof
  • A kind of composite bacteria and algae inhibitor and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Isothiazolinone, 2,2-dibromo-3-nitrilopropionamide, dodecyldimethylbenzyl ammonium chloride, glutaraldehyde, polyethylene glycol 200, copper sulfate, sulfuric acid and bis Distilled water is mixed evenly according to the mass ratio of 3:8:5:2:20:0.015:0.015:61.97, wherein 5-chloro-2-methyl-4-isothiazolin-3-one (CMI ) and 2-methyl-4-isothiazolin-3-one (MI) in a mass ratio of 15:5. Add the prepared agent to the raw seawater for the experiment at a concentration of 5mg / L, the water contains isothiazolinone, 2,2-dibromo-3-nitrilopropionamide, dodecyldimethyl chloride The effective concentrations of benzyl ammonium and glutaraldehyde were 0.15mg / L, 0.4mg / L, 0.25mg / L and 0.1mg / L respectively, and the bactericidal rate of compound bacteria and algae inhibitors was 93.3%, and the algae killing rate was 85.3% %, slime removal rate is 74.40%.

Embodiment 2

[0053] Isothiazolinone, 2,2-dibromo-3-nitrilopropionamide, dodecyldimethylbenzyl ammonium chloride, glutaraldehyde, polyethylene glycol 200, copper sulfate, sulfuric acid and bis The distilled water is mixed uniformly according to the mass ratio of 3:9:5:2:20:0.015:0.015:60.97, wherein the mass ratio of CMI and MI in isothiazolone is 15:5. Add the prepared agent to the original seawater for the experiment at a concentration of 1mg / L, the water contains isothiazolinone, 2,2-dibromo-3-nitrilopropionamide, dodecyldimethyl chloride The effective concentrations of benzyl ammonium and glutaraldehyde are 0.03mg / L, 0.09mg / L, 0.05mg / L and 0.02mg / L respectively, and the bactericidal rate of compound bacteria and algae inhibitors is 90.1%, and the algae killing rate is 80.9% %.

Embodiment 3

[0055] Isothiazolinone, 2,2-dibromo-3-nitrilopropionamide, dodecyldimethylbenzyl ammonium chloride, glutaraldehyde, polyethylene glycol 200, copper nitrate, sulfuric acid and bis The distilled water is mixed uniformly according to the mass ratio of 3:8:5:2:20:0.015:0.015:61.97, wherein the mass ratio of CMI and MI in isothiazolone is 15:5. Add the prepared agent to the concentrated seawater for the experiment at a concentration of 3 mg / L. The water contains isothiazolinone, 2,2-dibromo-3-nitrilopropionamide, dodecyldimethyl chloride The effective concentrations of benzyl ammonium and glutaraldehyde were 0.09mg / L, 0.24mg / L, 0.15mg / L and 0.06mg / L respectively, and the bactericidal rate of compound bacteria and algae inhibitors was 90.3%, and the algae killing rate was 81.2% %.

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Abstract

The invention belongs to the fields of chemical industry and water treatment, and in particular relates to a compound bacteria and algae inhibitor and its application. The composite bacteria and algae inhibitor of the present invention contains isothiazolinone, 2,2-dibromo-3-nitrilopropionamide, solvent and water, and the mass percentages of each component are respectively 1% to 40% of isothiazolinone, 2,2-dibromo-3-nitrilopropionamide 5%-40%, solvent 20%-60%, water 10-70%. The compound bacteria and algae inhibitor of the present invention is a non-oxidative biocide. When the bacteria and algae inhibitor is applied to a water treatment system, the impact type intermittent dosing method is adopted, and the dosage of the bacteria and algae inhibitor per liter of water is 1 mg to 100 mg. . The components of the formula of the present invention have obvious synergistic effect, good compatibility with scale inhibitors and corrosion inhibitors, low biological toxicity, high biodegradable rate, and have killing and inhibiting effects on planktonic bacteria and algae in water, It has stripping and inhibiting effects on the bacteria and algae adherents that grow on the surface of the equipment. In practical application, it has the advantages of small addition amount, low use cost, convenient operation and no pollution.

Description

technical field [0001] The invention belongs to the fields of chemical industry and water treatment, and in particular relates to an environment-friendly composite bacteria and algae inhibitor used in the field of seawater cooling or seawater desalination. Background technique [0002] The microbial control technology in industrial water treatment in various countries in the world still mainly adopts chemical prevention and control technology, that is, the technology of adding biocides to the system to kill microorganisms. Therefore, the development and application technology of biocides has become a hot spot for technicians. Halogen oxidizing biocides, as the earliest developed and used bacteria and algae inhibitors, are still widely used at present, but due to the large amount of halogen oxidizing biocides such as chlorine and sodium hypochlorite added to the water treatment system, the sewage caused by Halogenated hydrocarbons (THMS) such as trichloromethane and carbon te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N43/80A01P1/00A01P13/00C02F1/50C02F103/08A01N37/34A01N33/12A01N35/02
Inventor 李亚红赵小芳周筝元昊李运平胡明明
Owner TIANJIN SEA WATER DESALINATION & COMPLEX UTILIZATION INST STATE OCEANOGRAPHI
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