Bactericide and algicide for circulating water and preparation method thereof

Abstract

The invention belongs to the technical field of water treatment chemicals and in particular relates to a biocide-algaecide for circulating water and a preparation method thereof. The biocide-algaecide is prepared from the following materials in percentage by weight: 6%-50% of polyethylether dichloride tetramethyl ethylene diamine, 8%-20% of hydrogen peroxide, 0.3%-2% of fatty alcohol-polyoxyethylene ether, 0.5%-8% of hydroxyethane diphosphonic acid and the balance of deionized water. The preparation method of the biocide-algaecide comprises the following steps: adding deionized water, the polyethylether dichloride tetramethyl ethylene diamine, the fatty alcohol-polyoxyethylene ether, the hydroxyethane diphosphonic acid and the hydrogen peroxide into the same reaction kettle according to component content in sequence, and stirring for 30-60 minutes at a temperature of 10 DEG C-35 DEG C. According to the invention, the special-purpose biocide-algaecide for a water system of circulating water which is reclaimed water and wastewater is stronger, more lasting and more complete in killing performance for microorganisms and moss in the circulating water, and better in peeling slime produced by the microorganisms, is quick and obvious in sterilizing and algae-removing effect, less in dosage, free of foams and beneficial to industrial production.

Description

technical field [0001] The invention belongs to the technical field of water treatment chemicals, and in particular relates to a bactericidal algicide for circulating water and a preparation method thereof. Background technique [0002] China is a country with drought and severe water shortage, and fresh water resources are very scarce. With the continuous development of industry, water consumption is increasing, and water resources are becoming scarcer. In order to save water resources, more and more reclaimed water and waste water are After treatment, it is reused in industrial production and becomes industrial production water; more and more industrial circulating cooling water is converted from tap water and river water to treated reclaimed water and waste water, saving a lot of water resources, but reclaimed water and waste water are generally All adopt the combined physicochemical and biochemical treatment method. The reclaimed water and wastewater treated by this meth...

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Problems solved by technology

[0002] China is a country with drought and severe water shortage, and fresh water resources are very scarce. With the continuous development of industry, water consumption is increasing, and water resources are becoming scarcer. In order to save water resources, more and more reclaimed water and waste water are After treatment, it is reused in industrial production and becomes industrial production water; more and more industrial circulating cooling water is converted from tap water and river water to treated reclaimed water and waste water, saving a lot of water resources, but reclaimed water and waste water are generally All adopt the combined physicochemical and biochemical treatment method. The reclaimed water and wastewater treated by this method have complex components and many types of microorganisms. After being used as industrial circulating cooling water, due to the existence of suitable conditions such as temperature, salinity and nutrients, microorganisms reproduce faster. There is more biological slime, and the growth and reproduction of moss is more luxuriant, which causes microorganisms to corrode the circulating cooling water system and cause serious fouling, which has a great impact on the heat transfer effect (slime leads to poor heat transfer). Add oxidative bactericides such as chlorine, sodium hypochlorite, trichloroacetonitrile sodium urate, etc. to the circulating water, and non-oxidative bactericidal algaecides such as dodecyl dimethyl benzyl chloride, isothiazolinone, dialdehyde, polyphosphorus and other Compound products, etc., but the sterilizing and algae killing effect is not ideal for reclaimed water and wastewater used for circulating water, and it is difficult to control microorganisms

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