Why choose ozone disinfection for swimming pool disinfection?

Release date:2021-10-20

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Awareness of ozone
Ozone, whose chemical formula is O3, is also called triatomic oxygen and super oxygen. It is named for its fishy smell and can be reduced to oxygen at room temperature. The specific gravity is larger than that of oxygen, and it is easily soluble in water and easily decomposed. Since ozone is composed of oxygen molecules carrying an oxygen atom, it is determined that it is only a temporary state. The oxygen atoms carried are not only used for oxidation, but the rest is combined into oxygen to enter a stable state, so ozone has no secondary pollution.

swimming pool

Advantages of ozone disinfection
(1) Disinfection has no dead ends, high sterilization efficiency, and odor removal. When disinfection is in progress, the ozone generator generates a certain amount of ozone. In a relatively closed environment, it spreads evenly and has good permeability. It overcomes the problem of disinfection dead ends in ultraviolet sterilization and achieves all-round, rapid and efficient disinfection and sterilization purposes. In addition, due to its broad sterilization spectrum, it can kill bacteria, spores, viruses, fungi and protozoa spores and other microorganisms, and it can also destroy botulinum and toxins and rickettsiae. It also has It has a strong function of removing mildew, fishy, odor and other odors.
(2) No residue, no pollution. Ozone is produced by using oxygen in the air. During the disinfection and oxidation process, the excess oxygen atoms are combined into molecular oxygen after 30 minutes. There is no residual substance, which solves the problem of residual secondary pollution during disinfection by disinfectants and eliminates them. Clean again after disinfection.
Ozone is a strong oxidant. Its molecule is extremely unstable. It can decompose to produce monoatomic oxygen (O) and hydroxyl (OH) with strong oxidizing ability. It is a unique melting bacteria-type preparation that can quickly integrate into the cell wall to destroy bacteria, The internal structure of viruses and other microorganisms has a strong killing effect on various pathogenic microorganisms. The sterilization process is a biochemical oxidation reaction. Its function is mainly realized through the following three forms:
(1) Ozone can oxidize and decompose the enzymes necessary for the internal glucose of bacteria to inactivate and die of bacteria;
(2) The nuclear substances acting on bacterial cells, such as purines and pyrimidines in nucleic acids, destroy their organelles, DNA and RNA, destroy the metabolism of bacteria and cause the death of bacteria;
(3) Ozone double-stranded reaction with bacterial cell wall lipids, penetrating the cell membrane tissue, invading into the cell, acting on the lipoprotein of the outer membrane and the lipopolysaccharide inside, causing the bacteria to undergo permeability distortion and dissolve and die;
(4) Ozone acts on the four polypeptide chains of the capsid protein of the virus, and damages the RNA and destroys the proteins that form it. After the bacteriophage is oxidized by ozone, its epidermis is broken into many fragments, and a lot of ribonucleic acid is released from it, which interferes with its adsorption to the depository.
The effects of ozone are mainly concentrated in five aspects: anti-inflammatory and anti-infection, pain relief, oxidizing cholesterol, improving immunity, and supplying oxygen to ischemic tissues. However, because the molecular structure of ozone is a special molecule composed of three oxygen atoms, although it has strong oxidizing properties, it is also very unstable. Under normal temperature and pressure, it will automatically reduce to oxygen after 20 minutes. Therefore, the ozone used in clinical practice is all made on-the-spot, and is usually made from an ozone generator. The generation principle can be obtained by high-voltage discharge, corona discharge, electrochemistry, photochemistry, atomic radiation and other methods. The principle is to use high-voltage electricity or chemical reactions to decompose part of the oxygen in the air and polymerize into ozone, which is an allotrope of oxygen. A process of body transformation. After being made into ozone, it can be dissolved in sterilized water, blood, body fluids, or directly acted on tissues as needed to achieve different therapeutic purposes.

Ozone generator

In the application of swimming pool ozone, the following problems are often encountered
1. Why use ozone to disinfect the swimming pool?
2. Why should chlorine disinfection and ozone disinfection be used in combination, and can they replace each other?
3. When dosing ozone in a sub-flow full program, does ozone disinfect only 25% of the water in the sub-flow pipeline, and does it have a disinfectant effect on the main pipeline water?
4. Among the three dosing methods of swimming pool ozone (sub-flow full-program, full-flow semi-program, full-flow full-program), why are sub-flow and full-program dosing commonly used?
5. What is the main difference between sub-flow full-program dosing and full-flow semi-program dosing?
6. How to select the booster pump when ozone jet is added?
7. What benefits can the addition of an ozone system bring to end customers?
1. Why use ozone to disinfect the swimming pool?
1. Broad-spectrum sterilization-ozone is very effective in inactivating filtering viruses and other pathogenic bacteria. It has no residues and broad-spectrum sterilization. It can kill bacterial propagules and spores, viruses, fungi, etc., and can destroy botulism. Bacillus toxin
2. Instantaneous sterilization-600-3000 times stronger than chlorine series disinfectants. Ozone water disinfection and sterilization is rapid, and the disinfection takes place in a very short time.
Ozone ranks first in sterilization and has achieved its four major functions: sterilization, oxidation, decolorization, and deodorization.
3. Green and environmental protection. O3 will quickly decompose into oxygen or a single oxygen atom due to its poor stability, and a single oxygen atom can combine into oxygen molecules by itself, without any toxic residues, so O3. It is a pollution-free disinfectant.
4. Economical use·Because the disinfection effect of ozone can reduce the consumption of chlorine, ozone has a certain flocculation effect to reduce the dosage of flocculant, and at the same time improve the water clarity. The raw material produced by ozone is air and no material cost is required.
2. Why should chlorine disinfection and ozone disinfection be used in combination, and can they replace each other?
1. Chlorine is a long-lasting disinfectant
Because chlorine can exist in the water for a long time, during the opening process of the swimming pool, it has real-time killing effect on the germs brought into the swimming pool by the swimmers. However, due to the weak disinfection ability of chlorine, even if a higher concentration is used, the pool space will be extremely large. In the case of smell, some stubborn germs cannot be killed, and some common germs cannot be eliminated efficiently.
2. Instant and powerful ozone disinfection
Because ozone disinfection capacity is 600-3000 times that of chlorine, it can remove germs in the water at time, even some stubborn germs can be killed. Because ozone has a half-life of about 20 minutes in water, it will gradually reduce to oxygen. Exist in water.
Therefore, chlorine disinfection and ozone disinfection cannot replace each other, and must be used in combination to achieve the best results.

AQUA ozone generator

3. When dosing ozone in a sub-flow full-process, does ozone disinfect only 25% of the water in the sub-flow pipeline, and does it have a disinfection effect on the main pipeline water?
Split-flow ozone disinfection system, first add ozone to 25% of the circulating volume for disinfection, and then mix it with 75% of the circulating water volume of the main pipeline without ozone, because the half-life of ozone in the water is about 20 minutes, and it is mixed and diluted with the main pipeline. After the remaining ozone can continue to be disinfected, that is, it can also disinfect the main pipeline water flow.
4. In the three dosing methods of swimming pool ozone (sub-flow full-program, full-flow semi-program, full-flow full-program), why are sub-flow and full-program dosing often used?
The full-flow half-program is that the entire circulation volume is fully mixed with the added ozone, and the contact reaction is guaranteed. Although the disinfection effect is guaranteed, this method has more equipment, large equipment selection, and large investment. It is suitable for swimming pools. The load often appears full load or even exceed It can be used in load-bearing competition swimming pools or national swimming pools.
Split-flow ozone disinfection system, because of the small amount of ozone dosing, the equipment selection is relatively small, and the activated carbon adsorption tank is not added, thereby reducing the floor space, reducing the investment, reducing the operating cost, and effectively disinfecting and sterilizing , This disinfection method is the most cost-effective.
5. What is the main difference between split-flow full-program dosing and full-flow semi-program dosing?
First of all, let's understand the dosing amount of the two dosing methods in swimming pool water disinfection. The ozone dosing amount of the sub-flow full-program is 0.4-0.6mg/, and the full-flow semi-program dosing amount is
Because the ozone dosage of the full flow half-program is relatively large, in order to prevent the residual ozone in the water from entering the swimming pool space and causing the surface ozone concentration to exceed the standard, an activated carbon adsorption tank must be added after the ozone reaction tank. After the activated carbon adsorption tank, the water is almost There is no ozone, so it becomes a semi-program.
Since the ozone dosage is relatively low in the sub-flow full program, the ozone that is not dissolved in the water is discharged to the exhaust gas destroyer through the exhaust view. As long as there is no problem with the exhaust valve on the reaction tank, the ozone on the water surface of the swimming pool space will not appear. Exceeding standards.
There are three main differences between the two dosing methods:
1. The dosage of ozone is different;
2. The full flow rate is divided into the flow pipe for dosing, and the full flow half program is dosed on the main pipe;
3. The full-flow half-program requires an additional activated carbon adsorption tank, and the sub-flow full-program does not need to add an adsorption tank.
6. How to select the ozone booster pump for swimming pool?
The gas-water mixing ratio applied to the pool jet must be 21/4 in order to achieve a better mixing and ozone dissolution effect. The high-speed jet water with sufficient amount of water will form a gulf stream in the jet diffuser, ①crush the ozone gas into very small pieces The air bubbles ensure sufficient contact area for water and air; ②Small air bubbles rise slowly in the water, which increases the contact time of water and air, and improves the solubility of ozone in water from the above two points. On the contrary, if the air-to-water ratio is too small, although ozone gas can be sucked into the water, due to the large amount of air, the bubbles in the water increase, the water-gas contact area is reduced, and the large-size bubbles rise faster, reducing the water-gas contact Time, so reducing the amount of jet water will reduce the dissolving effect of ozone.
Taking a 100g oxygen source ozone generator as an example, the outlet gas concentration of the oxygen source ozone generator is about 80-120mg/L and the volume is about 1m-/h gas volume, so the pump selection requirements: flow rate O>4m'He35m
7. What benefits can the addition of an ozone system bring to end customers?
1: The disinfection effect of ozone can reduce the amount of chlorine used. Because ozone is depleted for disinfection, less chlorine is used for disinfection, thereby reducing the cost of chlorine injection.
2: Ozone can oxidize the chloride in the swimming pool, thereby reducing the chlorine smell in the swimming pool space.
3: Ozone has a flocculating effect, which can make swimming pool water clearer, reduce the amount of flocculant used, and reduce operating costs.
4: The oxidation effect of ozone can slow down the compaction of the filter sand tank, thereby reducing the amount of water used for backwashing and reducing water costs.

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