What is the ozone cleaning system?

With the continuous improvement of people's living standards and health conditions, the requirements of drinking water quality standards are becoming higher and higher. Conventional flocculation, sedimentation, filtration, and disinfection water purification processes have been difficult to meet the requirements of continuous improvement of water quality. It is necessary to add advanced treatment of water quality on the basis of existing conventional treatment processes. The ozone cleaning system has entered people's attention.

Here is the content list:

What is the ozone process like?

What are the advantages of the ozone cleaning system?

What is the ozone process like?

The main functions of ozone in the water purification process are pre-oxidation and post-oxidation. The reaction between ozone and organic matter can be divided into direct reaction and indirect reaction. The direct reaction is the direct oxidation of organic matter in water by ozone, which is selective and slow; Indirect reaction, ozone is formed through the water - OH radical oxidation of organic matter, it is not selective, its reaction speed is very fast.

Pre oxidation process: in the pre-oxidation process, ozone can remove odor, color, iron, manganese, heavy metals, and algae, destabilize colloidal particles in water, improve flocculation effect, reduce the dosage of coagulant, remove the parent substance of THM, and other three substances, and reduce the content of three substances in water, It can oxidize large molecule organic matter to small-molecule organic matter and oxidize inorganic matter such as cyanide, carbide, and nitration. The dosage of ozone in pre ozone contact oxidation is very small, generally 0.5-1.5mg/l. And the reaction time is short, generally 2-4 min, the reaction speed is fast, the residual ozone in water is generally zero or very little. The treated water of pre ozone cleaning system is usually raw water, which contains a certain amount of impurities, so its diffusion device must be able to prevent from being blocked by impurities in raw water. Generally, a static mixer or jet diffuser is used. The static mixer needs to consume 0.5 ~ 1m water head, so it is suitable for the situation where the water head of raw water is surplus. The jet diffuser does not consume the raw water head, but it needs to add some power equipment to enhance the mixing of a small amount of raw water (1.2 ~ 1.6m3 / kgo3) with ozone, so as to improve the transfer efficiency of ozone. The front ozone cleaning system generally has one dosing point at the front end of each flow line, and the effective water depth is generally 6m.

Post oxidation process: in the post oxidation process, ozone is generally used in combination with activated carbon, and its main functions are: killing bacteria and viruses; Oxidation of organic matter, such as pesticides, detergents, phenol, etc; Removal of COD; Chelates, such as EDTA and NTA, are oxidated. The reaction rate of post ozone contact oxidation is slow, and the reaction time is generally not less than 10 min. The dosage of ozone is generally 1.5-2.5mg/l, and the residual ozone in water is 0.2-0.4mg/l. The effective water depth is also 6m. The treated water of the post ozone cleaning system is generally sand filtered water, the water quality is relatively clear and does not contain impurities, so the diffusion device generally adopts a microporous cloth gas cap (plate). Microporous cloth cap (disk) does not consume power, is cheap, and has high efficiency of ozone transfer. The post ozone cleaning system generally has 2-3 dosing points for each process line. When two-point ozone dosing is used, the ozone dosing ratio of each point is 80% - 50% and 20% - 50% of the total ozone dosing along the flow direction; The ozone contact time of the two dosing points was 50% of the total time. When three-point dosing is adopted, the ozone dosing ratio of each point is 80% - 40%, 10% - 30%, and 10% - 30% of the total dosing along the flow direction; The ozone contact time of the three dosing points was 30%, 30% and 40% of the total time along the flow direction.

What are the advantages of the ozone cleaning system?

1. Reactive oxygen species (ROS) is a kind of mineral acid, which has a strong bactericidal effect against bacteria, viruses, and non-germinating cells. And it's not easy to cause blind areas in a killing virus.

2. Ozone cleaning system has a rapid disinfection and sterilization rate, which is 600-3000 times chlorine.

3. The metal oxides produced in the whole process of ozone cleaning system disinfection are non-toxic and odorless, and can quickly dissolve into oxygen, which is not easy to cause secondary pollution. If put into the breeding water, domestic water, sea surface, or wastewater treatment, it can improve the dissolved oxygen concentration in the water, which has the effect of cleaning, and is called the all-round disinfectant.

4. Active oxygen in the use of,