Technical communication

How does ozone mix with water best?

As we know, ozone is the second most oxidizing substance in nature. Because the molecular bonds of three oxygen atoms are so unstable, they can "bully" away electrons from the atoms of the substance they are in contact with, a property we call strong oxidation. When applied to water treatment industry, ozone has the following obvious characteristics:
1. Ozone has a strong ability to sterilize and disinfect. Experiments show that when the concentration of ozone in water reaches more than 0.3 parts per million, it has a strong sterilization effect. It only lasts a few seconds.
2. It has a strong oxidation capacity, which can oxidize organic matter in water and reduce COD in water. Colored organic matter can also be oxidized into colorless substances. That is, it has the function of decoloring. Therefore, ozone generator is widely used in municipal sewage, printing and dyeing plant tail water treatment.
3. Ozone can also oxidize some inorganic substances in water, such as ammonia, nitrite, hydrogen sulfide and other reductive substances. Oxidize them into high-potential substances such as nitrates. In aquaculture, these substances are toxic to fish and shrimp, so ozone oxidation is of great importance in aquaculture.
4. No harmful residue of ozone after the action of water. The only thing that breaks down ozone is oxygen. So it has an oxygenation effect on water. This is beneficial for aquaculture or municipal sewage treatment.

At present, when used in the water treatment industry, ozone generator usually USES aerolite or nanometer aerator to mix the ozone gas with water, and the bubble diameter is 1-3mm. Because the bubble is so large in diameter that it has little contact with water, the amount of ozone dissolved in the water is low. In addition, the bubble diameter is too large, and the bubble stays in water for a very short time, which further reduces the dissolved efficiency of ozone in water. In this way, on the one hand, the ozone generator can not fully play its role, resulting in the waste of equipment investment. On the other hand, after the overflow of excess ozone from water, it not only has a strong corrosive and aging effect on peripheral equipment, but also may cause potential hazards to human health. So it is very important to use ozone generator correctly.

After years of experiments and customer feedback from lanling water treatment equipment co., LTD., a better way to treat seawater is to use a combination of jet and pressure pump. When the ozone is connected to the inlet of the efflux, the negative pressure formed by the high-pressure water will inhale the ozone gas, and the vortex generated by the efflux itself will "break" the ozone into extremely fine bubbles. At this time, the contact area between ozone and water is exponentially multiplied, which will greatly improve the solubility of ozone in water and form ozone water. Most protein skimmer work on this principle.

At present, the best way to mix gas and liquid is to mix water with ozone by using ultra-micro bubble generator. Ultra - micro - bubble generator is a special water pump for mixing gas and liquid. It allows ozone to form a large number of bubbles with a diameter of less than 0.1mm in water, and because the bubbles are so small, they can stay in water much longer. In the experiment, lanling water treatment equipment used beakers to remove a portion of the water that had been treated with a microbubble generator. The water looked like milk. After two minutes of silence, the bubble layer above the liquid is still several centimeters high. After the test, the concentration of ozone in the ozone water can reach 4PPM after the integrated ozone-generator is treated by the ultra-micro bubble generator. Therefore, the mixing method is the best.

Pure oxygen and water mix in the same way as ozone. The saturated solubility of pure oxygen in water is higher than that of ozone. The dissolved oxygen value in water can reach 30mg/L after the pure oxygen is mixed with water by the ultra-micro bubble generator. According to the feedback from customers of lanling company, 60 cubic meters of fresh water aquaculture ponds are combined with 5L/min oxygen generator and ultra-micro bubble generator. After recycling, the dissolved oxygen value of water can be maintained at 13ppm.