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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, herbicide, algicide, biocide, etc., can solve the problems of biocide application fields and undisclosed use concentration, and achieve the promotion of green development and simple production process , The effect of facilitating the promotion and application

Active Publication Date: 2014-10-01
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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  • Composite bacteria and algae inhibitor and application thereof
  • Composite bacteria and algae inhibitor and application thereof
  • 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 composite bacteria and algae inhibitor and application thereof. The composite bacteria and algae inhibitor contains the following components in percentage by mass: 1-40 percent of isothiazolinone, 5-40 percent of 2,2-dibromo-3-nitrilo-propanamide, 20-60 percent of solvent and 10-70 percent of water. The composite bacteria and algae inhibitor is a non-oxide biocide, and when the bacteria and algae inhibitor is applied to a water treatment system, an impact type intermittent dosing mode is adopted, and the addition amount of the bacteria and algae inhibitor in each liter of water is 1mg-100mg. The components in the formula have an obvious synergistic effect and are high in compatibility with a scale inhibitor and a corrosion inhibitor, and the bacteria and algae inhibitor is low in biotoxicity and high in biodegradation rate, has the effects of killing and inhibiting bacterioplankton and algae in water and has effects of stripping and inhibiting bacteria and algae attachments settling and growing on equipment surfaces. During actual application, the composite bacteria and algae inhibitor has the advantages of small addition amount, low using cost, convenience in operation, pollution-free discharge and the like.

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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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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