What are the classifications, characteristics and methods of use of water treatment bactericidal alg

Water treatment fungicides are also known as bactericides and algaecides, sludge strippers or anti-sludge agents. A type of chemical that can inhibit the growth of bacteria and algae and microorganisms in water to prevent the formation of microbial slime and cause harm to the system.

At present, there are two main categories of commonly used water treatment bactericides and algaecides, namely oxidizing fungicides and non-oxidizing fungicides.

Oxidizing biocides can oxidize other reducing substances in the water, and when there are organic matter, hydrogen sulfide, and ferrous ions in the water, a part of the oxidizing biocides will be consumed to reduce their killing effect. The oxidizing biocides commonly used in circulating cooling water systems are chlorine-containing compounds, peroxides, bromine-containing compounds and other compounds with oxidizing properties. These compounds generally have the advantages of fast bactericidal and algae killing speed, high broad-spectrum killing effect, low treatment cost, relatively small impact on environmental pollution, and microorganisms are not easy to develop drug resistance.

The disadvantages are that it is greatly affected by organic matter and reducing substances in water, the chemical time is short, and the pH value in the water is also greatly affected, and at the same time, the dispersion penetration and peeling effect are poor.

Non-oxidizing bactericidal algaecide does not kill microorganisms by oxidation, but acts poisonously on special parts of microorganisms, so it is not affected by the reducing substances in the water. Non-oxidizing bactericidal algaecides are usually non-oxidizing compounds of chlorophenols and quaternary ammonium salts. The biocidal effect of non-oxidizing bactericidal algaecide has a certain persistence, has a permeability and peeling effect on sediment or slime, and is less affected by reducing substances such as hydrogen sulfide and ammonia, and is less affected by the pH value in water.

In the case of non-oxidizing bactericidal algaecide, the general dosage is 50-100g m3. When used as a slime stripping agent, the dosage is 200-300g m3 and an appropriate amount of defoamer is added. If combined with glutaraldehyde, dithiocyanomethane and other fungicides, it can increase the efficacy, but can not be used with chlorophenol agents.

Classification of water treatment bactericidal algaecides: At present, there are two main categories of water treatment bactericidal algaecides, namely oxidizing fungicides and non-oxidizing fungicides. The most widely used oxidizing fungicides are chlorine and its products, such as NAOCI and CA(OCI)2

In recent years, the application of CL02 and chloramine has increased, and the application of ozone and bromide is also worthy of attention. The other type is a non-oxidizing fungicide, which is currently more commonly used in China is quaternary ammonium salts such as dodecyldimethylbenzylammonium chloride, whose trade name is "1227". Dithiocyanomethane and glutaraldehyde are two other types of commonly used non-oxidizing fungicides.

Definition of bactericidal algaecide:

Bactericidal algaecide is also known as jieerzi, benzalkonium chloride. It is mainly used as an agent for eliminating harmful bacteria such as bacteria and microorganisms, and can inhibit the growth of microorganisms such as algae in water and prevent the formation of microbial mucus.

Microbial Hazards in Circulating Cooling Water Systems:

1) Deterioration of water quality, increase power consumption, damage to equipment.

2) Formation of biological slime.

3) Formation of slag cryptoscale to promote corrosion.

4) Render the corrosion inhibitor ineffective or partially ineffective.

5) Polluting cooling water, producing pathogenic bacteria, endangering human health.

Classification of bactericidal algaecides:

Bactericides kill bacteria, algae, and other microorganisms in the water. It is mainly divided into oxidative bactericidal algaecide and non-oxidative bactericidal algaecide.

Oxidative bactericidal algaecide:

1) Chlorine: Chlorine is currently the most used fungicide, but its use is limited due to the easy production of chloroform.

2) Chloramine: The sterilization lasts for a long time, and can inhibit the later growth of microorganisms, the disadvantage is that the sterilization ability is poor, and it is expensive.

3) Ozone: Ozone is a strong oxidant, characterized by fast action, low pollution, the disadvantage is that the oxidation energy is too strong, there are almost no corrosion inhibitors and scale inhibitors can be matched with it, and it needs to occur on site, resulting in high cost.

Non-oxidizing fungicides algaecide:

1) Quaternary ammonium salt: the two most commonly used fungicides in quaternary ammonium salts are geraniamine and neogeraniamine, which have low toxicity, low cost, good bactericidal and algaecide performance, and are widely used.

2) Isothiazolinone: broad-spectrum, and at the same time has a peeling effect on slime. It also does not contain gas ions, is low toxicity and does not produce foam, which is environmentally friendly.

3) Copper salt: The copper ions in the copper salt can coagulate the glial substances of the bacterium, destroy the respiration and metabolism of cells, and cause cell death.

What is the principle of bactericidal algaecide? What are the performance characteristics.

What are the disadvantages of traditional bactericidal algaecides? How to deliver.

What is the difference between oxidation and non-oxidation of bactericidal algaecides.

1. There are four main types of chemical algaecides: N-alkyl algaecide, dimethylbenzylammonium chloride algaecide, N-dialkyl algaecide, and dimethylethalkylammonium chloride algaecide.

2. The algaecide has a good ability to sterilize and kill algae in different pH values, which can effectively dig out the algae brigade reproduction and slime growth, and has the effect of dispersion and infiltration, and can infiltrate and remove the slime and peel off the attached algae, in addition, it also has the ability to remove oil. The main components of algaecide: dodecyldimethylbenzylammonium chloride, etc.

Water treatment bactericidal algaecide is used to kill harmful microorganisms that inhibit the growth of bacterifloral algae, and achieve the purpose of inhibiting or killing organisms.

In the process of running a large number of microorganisms and other fungi, if not treated in time, a large number of microorganisms and their objects can be suspended in the circulating water, and other impurities are mixed together to form a viscous viscous substance, in which the substance can adhere to the inner wall of the pipe, smooth and greasy, is a poor heat conductor, the thermal conductivity is very poor, and the thermal conductivity compared with stainless steel is still less than 1, resulting in a significant reduction in heat transfer efficiency, which greatly increases the production load and increases the production cost at the same time, So that the unit energy consumption continues to increase.

Therefore, the removal of microorganisms and other impurities in circulating water is necessary, and for expensive medium-sized equipment, adding related bactericidal algaecide water treatment agents (such as: 1227 fungicide) is the most effective and most direct and economical method, so what are they?

One: 1227 fungicide.

When it comes to 1227 fungicide, it cannot be said that the effect is remarkable, and it can be said to be one of the best fungicides. It is not an exaggeration to say that the emperor's fungicide was used. Why?

1227 fungicide is a non-oxidizing fungicide, colorless and non-toxic, the water itself is small, it has high efficiency and broad-spectrum bactericidal effect on microorganisms and other fungi, and the effect is very obvious. At the same time as the application of sterilization, it also has the effect of slime stripping agent on slime stripping, the permeation and dispersion effect is very good, which is not its full effect, in addition, it also has degreasing, deodorizing and antiseptic effects. Therefore, chemical, spinning, motive and other circulating water are widely used to control the reproduction of algae microorganisms in circulating water, because sulfate-reducing bacteria have a strong role in killing.

Second, euchlorine fungicide.

The euchlorine fungicide is soluble in water, with high efficiency, fast, broad spectrum, safety and other characteristics, with a strong killing effect, at 20ppm, the sterilization rate is 99.

Third, isothiazolinone fungicide.

The sterilization effect of isothiazolinone is fundamental, which can fundamentally block the differentiation and reproduction of microbial cells, that is, sterilization, with the advantages of high efficiency, broad spectrum, low toxicity and no oxidation. At present, it is one of the widely used fungicides, mainly used in paper, textile, pesticide, leather, ink and other industries. If the increased dose has a significant effect on the mucus stripper.

Summary. Hello, dear, I'll help you solve this problem, water treatment agent bactericidal algaecide belongs to chemical additives. Water treatment chemicals, also known as water treatment agents, mainly refer to the chemicals used in industrial water treatment, including scale inhibitors, corrosion inhibitors, dispersants, bactericidal algaecides, defoamers, flocculants, oxygen scavengers, sludge regulators, chelating agents, etc. for industrial water treatment such as cooling water, boiler water, sewage, oilfield water, etc.

Coagulants and flocculants for raw water and wastewater treatment are also included in water treatment chemicals. In addition, activated carbon and ion exchange resins are important water treatment chemicals. Hope it helps!

Have a great day

Hello, dear, I'll help you solve this problem, water treatment agent bactericidal algaecide belongs to chemical additives. Water treatment chemicals, also known as water treatment chemicals, mainly refer to the chemicals used in industrial water treatment, including antiscalants, corrosion inhibitors, dispersants, bactericidal algaecides, defoamers, flocculants, oxygen scavengers, sludge regulators, chelating agents, etc. Coagulants and flocculants for raw water and wastewater treatment are also included in water treatment chemicals.

In addition, activated carbon and ion exchange resins are important water treatment chemicals. Hope it helps! Have a great day

Further information: The development history of water treatment chemicals: water treatment chemicals, also known as water treatment agents, in the 70s, some people also called it water quality stabilizers, mainly referring to the chemicals used in industrial water treatment, including cooling water, boiler water and oilfield water and other industrial water treatment scale inhibitors, corrosion inhibitors, dispersants, bactericidal algaecides, defoamers, flocculants, oxygen scavengers, sludge regulators and chelating agents.

Coagulants and flocculants for raw water and wastewater treatment are also included in water treatment chemicals. In addition, activated carbon and ion exchange resins are important water treatment chemicals. In 1992, the world's sales of water treatment agents were 100 million US dollars (excluding activated carbon, ion exchange resins, combustion additives and general inorganic coagulants), of which the United States was 100 million US dollars, Western Europe was 100 million US dollars, and Japan was 100 million US dollars.

According to statistics, there are more than 500 companies engaged in the production and service of water treatment agents in the United States, and they mainly provide technical services. The water treatment market in Western Europe is mainly controlled by American companies, and there are only a few water treatment companies in Western European countries. Western European organic polymer flocculants, especially polyacrylamide products have certain advantages, coupled with the lack of production capacity of powder products in the United States, most of its market is occupied by Western European companies, in addition.

How to use: This product is used as a non-oxidizing bactericidal algaecide, with a general dosage of 50-100 mg L, and as a slime stripping agent, the dosage is 200-300mg L, and an appropriate amount of defoamer is added at the same time. This product can be used in combination with other fungicides, such as glutaraldehyde, dithiocyanomethane, etc., which can play a synergistic role, but cannot be used together with chlorophenol agents.

After adding this product, the dirt in the circulating water due to peeling should be filtered out or discharged in time to avoid the foam from disappearing and deposited at the bottom of the collection tank. At the time of the first dose, the dose should be increased, generally times the normal dose. Under normal operation, the dosage of DL-601 is 80mg L, which is dosed once every two weeks.

During storage, ventilation should be maintained, not exposed to the sun, and during handling and transportation, it should be carefully placed in the direction of the finch state, and it is strictly forbidden to impact.

The industrial circulating water system needs to add algaecides and fungicides, which are generally added in the Tanbu pool and water tank at the open opening of the letter, and then circulate through the pipeline into each ear destroying part, detect the concentration at the water outlet, and then automatically add according to the test results.

1) Disinfection: There are mainly chemical disinfection methods and physical disinfection methods. Physical disinfection methods include high temperature, adsorption, filtration, etc., and chemical methods include oxidant methods such as ozone and heavy metal ions.

2) Adsorption water purification technology: It mainly refers to the adsorption technology of activated carbon and other substances with adsorption capacity. A brief introduction to some of the properties of activated carbon:

Activated carbon is widely used in the purification, dehydrogenation, degreasing and deodorization of domestic chemical, electric power, food and other industrial water. Typically, 63 -86 colloidal materials; about 50 of iron; And it can remove 47 -60 organic matter.

3) Precision filtration technology: The microporous filter element and membrane made of special materials are used to intercept particles and bacteria in the water with uniform pore size, so that they cannot be removed and retained through the filter element and membrane. Precision filtration can filter micron (micron) or nano (nano) particles and bacteria.

Advanced treatment of water is also widely used.

4) Magnetization: The use of magnetic field effect to treat water, that is, the magnetization of water.

1) Humidity effects: someBactericidal algaecideReagents are often affected by humidity, and the higher or less the relative humidity increases, the higher the efficiency, so we can improve the efficiency of the bactericidal algaecide by adjusting the humidity to the optimal range in a specific environment.

2) Temperature influence: the same as humidity, for some bactericides and algaecides, the increase in temperature will increase the permeability of the protoplasmic membrane of microbial cells, which can accelerate the diffusion speed of bactericidal algaecides and reach the site of action in the shortest time, and exert the effect, according to effective tests to prove that when the temperature increases by about 10 degrees, the sterilization efficiency of the bactericidal algaecide will increase by 2 times.

3) Water activity effect: water activity refers to the percentage of water that can be used by microorganisms, if the water activity value increases to a certain range, it will cause the bactericidal algaecide to lose its own protective effect, so maintaining the water activity value has a great impact on the bactericidal algaecide.

1. Bactericidal algaecides are generally chemicals, and personal protection is required during operation, and it is best to wear rubber gloves when using them to prevent direct contact with **.

2. If you do not touch the ** or eyes with caution during operation, you should wash it immediately with water to avoid damage to the body due to untimely cleaning.

3. Before use, it is necessary to understand the use method and the amount and proportion of the use with the sales staff, because the use of different places, the amount of use will also be different, so as to avoid improper operation, and then cause unnecessary trouble.

4. The bactericidal algaecide has good water solubility, so it can be dissolved immediately when used, and there is no need to dissolve it in advance.