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Safe use of disinfectants commonly used in aquatic products

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  • Release Time:2022-07-22 18:39
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【Summary】Disinfectants are the most commonly used drugs in aquaculture, used to eliminate or kill pathogenic microorganisms and other harmful microorganisms in the external environment. According to chemical properties, it can be divided into eight categories: aldehyde disinfectants, alkali disinfectants, acid disinfectants, salt disinfectants, halogen disinfectants, dye disinfectants, oxidant disinfectants, and heavy metal disinfectants. There are many species of aquaculture animals in my country, and the toxicity of different types of disinfectants to aquatic animals is quite different.

Safe use of disinfectants commonly used in aquatic products

【Summary】Disinfectants are the most commonly used drugs in aquaculture, used to eliminate or kill pathogenic microorganisms and other harmful microorganisms in the external environment. According to chemical properties, it can be divided into eight categories: aldehyde disinfectants, alkali disinfectants, acid disinfectants, salt disinfectants, halogen disinfectants, dye disinfectants, oxidant disinfectants, and heavy metal disinfectants. There are many species of aquaculture animals in my country, and the toxicity of different types of disinfectants to aquatic animals is quite different.

  • Categroy:News
  • Author:
  • Origin:
  • Release Time:2022-07-22 18:39
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Disinfectants are the most commonly used drugs in aquaculture, used to eliminate or kill pathogenic microorganisms and other harmful microorganisms in the external environment. According to chemical properties, it can be divided into eight categories: aldehyde disinfectants, alkali disinfectants, acid disinfectants, salt disinfectants, halogen disinfectants, dye disinfectants, oxidant disinfectants, and heavy metal disinfectants. There are many species of aquaculture animals in my country, and the toxicity of different types of disinfectants to aquatic animals is quite different.

 

1.Bleaching powder

Calcium hypochlorite, the main component of bleaching powder, produces hypochlorous acid and hypochlorous acid ions with bactericidal power when contacted with water. Hypochlorous acid can also release active chlorine and nascent oxygen, thereby producing chlorination and oxidation reactions on bacterial protoplasmic proteins, exerting its bactericidal effect, and having different killing effects on bacteria, viruses and fungi.

 

2.Sodium hypochlorite

Sodium hypochlorite, commonly known as bleach, is a commonly used chemical disinfectant. It has strong poisoning power and does not have strict selectivity for organisms. However, this drug is not stable, and attention should be paid to active ingredients when using it. Its mechanism of action is the same as that of bleaching powder.

 

3.Sodium Dichloroisocyanurate

Sodium Dichloroisocyanurate has the same mechanism of action as bleaching powder, and produces hypochlorous acid and hypochlorous acid ions with bactericidal power in contact with water. It has a wide bactericidal spectrum and has a strong killing effect on bacterial propagules, spores, viruses, fungal spores, etc.

 

4.Trichloroisocyanuric acid

Trichloroisocyanuric acid, also known as strong chloroquine, has the same mechanism of action as bleaching powder, and its validity period is 4 to 5 times longer than that of bleaching powder. It has a significant effect on skin diseases, and has excellent effects on diseases such as fulminant fish disease, leukoderma, printing disease, and white-headed and white-mouthed disease.

 

5.Bromochlorohydantoin

Bromochlorohydantoin is a high-efficiency, broad-spectrum disinfectant. Its pH range is wider than that of conventional chlorine-containing disinfectants, and the killing effect is good. In water, it can continuously release active Br- ions and Cl- ions to form hypobromous acid and hypochlorous acid, and oxidize the biological enzymes in the microorganisms to achieve the purpose of sterilization.

 

6.Dibromohydantoin

Dibromohydantoin hydrolyzes relatively fast, can continuously release HBrO (active bromine) in water, and penetrate the cell wall of microorganisms to destroy bacterial proteins, resulting in irreversible oxidation and damage to the internal structure of the cells. Decomposition, and finally play a sterilization effect.

 

7.Chlorine dioxide

Chlorine dioxide is a strong oxidant. It is different from the action mechanism of general chlorine preparations. The activated chlorine dioxide produces new ecological oxygen with strong oxidizing effect under the action of hydrogen ions, which can quickly attach to microorganisms. The surface of the cell penetrates deep into the cell membrane of the microorganism, so that the microbial protein loses its vitality and achieves the purpose of killing the microorganism.

 

8.Formalin

Formalin is an aqueous solution of 40% formaldehyde, which has a strong pungent odor, can coagulate proteins and dissolve lipids, denature proteins, and has powerful broad-spectrum bactericidal and insecticidal effects.

 

9.Potassium permanganate

Potassium permanganate is a strong oxidant, its aqueous solution contacts with organic matter, can release new ecological oxygen, rapidly oxidize organic matter, make the active groups and sulfhydryl (— SH) is oxidized into disulfide chain (—S—S) and inactivated, thereby playing a bactericidal effect.

 

10.Quicklime

The main component of quicklime is calcium oxide, which is a convenient, cheap and efficient disinfectant. When mixed with water, it generates calcium hydroxide and releases a lot of heat, which can quickly dissolve the cell protein membrane and make it lose its vitality, thereby killing the pathogens in the pool and the harmful organisms remaining in the pool. When used for sterilization and treatment of diseases, attention should be paid to the change of pH value of the water body, and it should not be excessive, because when the pH value of the water body is greater than 7.5, the quicklime can rapidly increase the pH value to form a strong alkalinity, which is easy to cause dead fish. Quicklime is highly sensitive to snakehead, juvenile M. rosenbergii, and larvae of M. rosenbergii, so it should be prohibited to use in production.

 

11.Sodium chloride

Its aqueous solution can be used as a hypertonicity agent, and the osmotic pressure of pathogens or their attached organisms can be changed by immersion method, so that the liquid inside and outside the cell will be out of balance and die or fall off from the anchorage. is widely used.

 

12. Povidone-iodine

Povidone-iodine is a water-soluble polymer compound composed of molecular iodine and PVP that can slowly release iodine, and maintain a dynamic balance between the two. Its bactericidal activity is the affinity of the bacterial membrane provided by the surfactant PVP, and the iodine contained in it is combined with the cell membrane and cytoplasm to oxidize or iodide thiol compounds, peptides, proteins, enzymes, lipids, etc., so as to achieve sterilization. the goal of. As a broad-spectrum disinfectant, it has different degrees of killing effect on most bacteria, fungi and viruses. It is mainly used for surface disinfection of fish eggs and aquatic animals.

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Difference between calcium hypochlorite and bleaching powder
Difference between calcium hypochlorite and bleaching powder
1. What is Calcium hypochlorite? The main components of bleaching powder commonly used in aquaculture are calcium chloride and calcium hypochlorite. Among them: the effective component of bleaching powder that plays a role in disinfection is calcium hypochlorite [ca (CLO) 2], and calcium chloride is a chemical substance that will obviously absorb moisture. Due to the existence of calcium chloride in bleaching powder, the available chlorine in bleaching powder is easily affected and reduced. Because calcium hypochlorite is the essence of bleaching powder, calcium hypochlorite is also called bleaching powder essence in the market. Compared with bleaching powder, it is pure calcium hypochlorite essence and does not contain calcium chloride and other hygroscopic substances. The chlorine content is about 68%, which is significantly higher than the effective chlorine content of the newly produced non damped bleaching powder. Generally, the disinfection dose is only 0.1~0.2ppm. In aquaculture and other industries that need disinfection and oxidation, disinfectants that dissolve in water and produce hypochlorite are generally referred to as chlorine containing disinfectants. The germicidal efficacy of chlorine containing disinfectants is closely related to the amount of effective chlorine they contain. The higher the effective chlorine, the stronger the disinfection and oxidation capacity. 2. Comparison of advantages and disadvantages between bleaching powder and calcium hypochlorite Advantages of bleach: It is cheap and has obvious effect on general pathogenic microorganisms. Disadvantages of bleach: Due to the strong water absorption of calcium chloride contained in bleaching powder, it is easy to decompose when exposed to light, water, heat, etc., and is not resistant to storage. Especially in humid areas, the available chlorine of bleaching powder will decrease exponentially in about a month. Even lead to the loss of proper disinfection effect. The principle of bleaching powder deterioration: Calcium chloride in bleaching powder absorbs water and makes calcium hypochlorite in bleaching powder generate hypochlorite.   3. Hypochlorous acid will decompose into hydrogen chloride and oxygen under light conditions, thus losing effective chlorine. Advantages of calcium hypochlorite: contains very little hygroscopic calcium chloride, so calcium hypochlorite is relatively stable and resistant to storage and transportation (which is very important to ensure the disinfection effect). Compared with bleaching powder, the available chlorine of calcium hypochlorite is stable and high, which has obvious effect on general pathogenic microorganisms. The amount of use in disinfection is small, which reduces the amount of labor. Disadvantages of calcium hypochlorite: Since calcium hypochlorite contains a large amount of effective chlorine, protective measures need to be taken during operation.
See more information
1. What is Calcium hypochlorite? The main components of bleaching powder commonly used in aquaculture are calcium chloride and calcium hypochlorite. Among them: the effective component of bleaching powder that plays a role in disinfection is calcium hypochlorite [ca (CLO) 2], and calcium chloride is a chemical substance that will obviously absorb moisture. Due to the existence of calcium chloride in bleaching powder, the available chlorine in bleaching powder is easily affected and reduced. Because calcium hypochlorite is the essence of bleaching powder, calcium hypochlorite is also called bleaching powder essence in the market. Compared with bleaching powder, it is pure calcium hypochlorite essence and does not contain calcium chloride and other hygroscopic substances. The chlorine content is about 68%, which is significantly higher than the effective chlorine content of the newly produced non damped bleaching powder. Generally, the disinfection dose is only 0.1~0.2ppm. In aquaculture and other industries that need disinfection and oxidation, disinfectants that dissolve in water and produce hypochlorite are generally referred to as chlorine containing disinfectants. The germicidal efficacy of chlorine containing disinfectants is closely related to the amount of effective chlorine they contain. The higher the effective chlorine, the stronger the disinfection and oxidation capacity. 2. Comparison of advantages and disadvantages between bleaching powder and calcium hypochlorite Advantages of bleach: It is cheap and has obvious effect on general pathogenic microorganisms. Disadvantages of bleach: Due to the strong water absorption of calcium chloride contained in bleaching powder, it is easy to decompose when exposed to light, water, heat, etc., and is not resistant to storage. Especially in humid areas, the available chlorine of bleaching powder will decrease exponentially in about a month. Even lead to the loss of proper disinfection effect. The principle of bleaching powder deterioration: Calcium chloride in bleaching powder absorbs water and makes calcium hypochlorite in bleaching powder generate hypochlorite.   3. Hypochlorous acid will decompose into hydrogen chloride and oxygen under light conditions, thus losing effective chlorine. Advantages of calcium hypochlorite: contains very little hygroscopic calcium chloride, so calcium hypochlorite is relatively stable and resistant to storage and transportation (which is very important to ensure the disinfection effect). Compared with bleaching powder, the available chlorine of calcium hypochlorite is stable and high, which has obvious effect on general pathogenic microorganisms. The amount of use in disinfection is small, which reduces the amount of labor. Disadvantages of calcium hypochlorite: Since calcium hypochlorite contains a large amount of effective chlorine, protective measures need to be taken during operation.
Calcium hypochlorite Market Overview
Calcium hypochlorite Market Overview
Time of issue : 2024-04-15 16:52:27
Market Overview It is estimated to reach USD 1,808.11 million by 2031, growing at a CAGR of 11.13% over the forecast period (2023–2031). Market growth is anticipated to be driven by the rising demand for calcium hypochlorite in the coming years, driven by the rising usage of hygiene products to prevent water-borne diseases like cholera and typhoid.   Calcium hypochlorite is an inorganic compound utilized as a component in chlorine powder and bleaching powder, among other applications. It undergoes gradual decomposition in humid air and emits a potent chlorine odor. Calcium hypochlorite overuse can be harmful and irritate the skin. It has extensive applications in the disinfection of swimming pools, water purification, and bleaching textiles and paper. Calcium hypochlorite must be stored away from organic materials such as cloth, wood, and petroleum products since it can cause an explosion or fire when reacted.   Calcium hypochlorite is mainly used to disinfect drinking water and public swimming pools. The surging usage of calcium hypochlorite in spas, hot tub water, and swimming pools is anticipated to positively impact the growth of the calcium hypochlorite market worldwide. It is used as an oxidizer for decontaminating mustard gas and as a pesticide for insects, especially caterpillars. Calcium hypochlorite is also used to kill bacteria in different food products. It is utilized to sanitize the surfaces of different equipment and utensils. In households, calcium hypochlorite is commonly used in algaecides, bathroom cleaners, herbicides, household disinfectant sprays, laundry detergents, etc.
See more information
Market Overview It is estimated to reach USD 1,808.11 million by 2031, growing at a CAGR of 11.13% over the forecast period (2023–2031). Market growth is anticipated to be driven by the rising demand for calcium hypochlorite in the coming years, driven by the rising usage of hygiene products to prevent water-borne diseases like cholera and typhoid.   Calcium hypochlorite is an inorganic compound utilized as a component in chlorine powder and bleaching powder, among other applications. It undergoes gradual decomposition in humid air and emits a potent chlorine odor. Calcium hypochlorite overuse can be harmful and irritate the skin. It has extensive applications in the disinfection of swimming pools, water purification, and bleaching textiles and paper. Calcium hypochlorite must be stored away from organic materials such as cloth, wood, and petroleum products since it can cause an explosion or fire when reacted.   Calcium hypochlorite is mainly used to disinfect drinking water and public swimming pools. The surging usage of calcium hypochlorite in spas, hot tub water, and swimming pools is anticipated to positively impact the growth of the calcium hypochlorite market worldwide. It is used as an oxidizer for decontaminating mustard gas and as a pesticide for insects, especially caterpillars. Calcium hypochlorite is also used to kill bacteria in different food products. It is utilized to sanitize the surfaces of different equipment and utensils. In households, calcium hypochlorite is commonly used in algaecides, bathroom cleaners, herbicides, household disinfectant sprays, laundry detergents, etc.
Pros of Calcium Hypochlorite
Pros of Calcium Hypochlorite
Time of issue : 2024-04-09 10:13:04
Calcium hypochlorite is a white, concentrated chemical sold as a powder, as crystals and in tablets. All are used to disinfect and sanitize drinking water and swimming pool water. When combined with water, calcium hypochlorite releases oxygen and a high concentration of chlorine molecules. Chlorine is an effective way to kill bacterial and fungal populations in water sources, and, compared with other sources of chlorine for water purification, it is easier and safer to use. However, there are some downsides to be aware of in calcium hypochlorite use. Cost Effectiveness One of the primary benefits of calcium hypochlorite is that a relatively small amount of the chemical can successfully disinfect large amounts of water, making it one of the most cost-effective choices in water sanitation. According to Survivaltopics.com, a site devoted to providing readers information about surviving outdoors and during emergency situations, a 1-lb. bag of calcium hypochlorite in granular form can treat up to 10,000 gallons of water. Ease of Use Although using chlorine as a water disinfectant is generally simple and efficient, calcium hypochlorite is preferred over the other common forms of chlorine water treatment–chlorine gas and liquid bleach (also known as sodium hypochlorite)–because it is more stable, requires less equipment to use and is easier to transport. Chlorine gas is highly effective but must be handled with extreme care because of its hazardous, corrosive nature. Liquid bleach is most useful when treating only small amounts of water. By contrast, calcium hypochlorite is safer to handle than chlorine gas and can be used on much larger volumes of water than bleach. Length of Storage Another benefit of calcium hypochlorite is that it can be stored for long periods of time without any of its disinfectant ability diminishing. Other forms of chlorine, such as liquid bleach, degrade in a matter of months. In order to be certain that your bleach has the optimal level of chlorine, a representative of Clorox says, you should change your supply of bleach every three months. Length of Storage Another benefit of calcium hypochlorite is that it can be stored for long periods of time without any of its disinfectant ability diminishing. Other forms of chlorine, such as liquid bleach, degrade in a matter of months. In order to be certain that your bleach has the optimal level of chlorine, a representative of Clorox says, you should change your supply of bleach every three months.  
See more information
Calcium hypochlorite is a white, concentrated chemical sold as a powder, as crystals and in tablets. All are used to disinfect and sanitize drinking water and swimming pool water. When combined with water, calcium hypochlorite releases oxygen and a high concentration of chlorine molecules. Chlorine is an effective way to kill bacterial and fungal populations in water sources, and, compared with other sources of chlorine for water purification, it is easier and safer to use. However, there are some downsides to be aware of in calcium hypochlorite use. Cost Effectiveness One of the primary benefits of calcium hypochlorite is that a relatively small amount of the chemical can successfully disinfect large amounts of water, making it one of the most cost-effective choices in water sanitation. According to Survivaltopics.com, a site devoted to providing readers information about surviving outdoors and during emergency situations, a 1-lb. bag of calcium hypochlorite in granular form can treat up to 10,000 gallons of water. Ease of Use Although using chlorine as a water disinfectant is generally simple and efficient, calcium hypochlorite is preferred over the other common forms of chlorine water treatment–chlorine gas and liquid bleach (also known as sodium hypochlorite)–because it is more stable, requires less equipment to use and is easier to transport. Chlorine gas is highly effective but must be handled with extreme care because of its hazardous, corrosive nature. Liquid bleach is most useful when treating only small amounts of water. By contrast, calcium hypochlorite is safer to handle than chlorine gas and can be used on much larger volumes of water than bleach. Length of Storage Another benefit of calcium hypochlorite is that it can be stored for long periods of time without any of its disinfectant ability diminishing. Other forms of chlorine, such as liquid bleach, degrade in a matter of months. In order to be certain that your bleach has the optimal level of chlorine, a representative of Clorox says, you should change your supply of bleach every three months. Length of Storage Another benefit of calcium hypochlorite is that it can be stored for long periods of time without any of its disinfectant ability diminishing. Other forms of chlorine, such as liquid bleach, degrade in a matter of months. In order to be certain that your bleach has the optimal level of chlorine, a representative of Clorox says, you should change your supply of bleach every three months.  
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