What is the principle of ultrasonic sewage treatment equipment?

Working principle

Cavitation effect: When ultrasonic waves propagate in water, they will cause cavitation in the liquid, forming tiny cavitation bubbles. When these cavitation bubbles collapse instantly, they will generate powerful shock waves and jets, creating a high temperature and high pressure environment, which is enough to destroy the molecular structure of pollutants in the water, such as decomposing large molecular organic matter into small molecular substances, accelerating their decomposition and removal, and destroying the cell walls of microorganisms to achieve the purpose of sterilization and disinfection.
Free radical oxidation principle: Under the local high temperature and high pressure environment generated by ultrasonic cavitation, water is decomposed to produce free radicals such as hydroxyl (OH) and hydrogen (H), and the air (N2 and O2) dissolved in the solution can also undergo free radical cleavage reactions to produce N and O free radicals. These free radicals have strong oxidizing properties and can undergo oxidation reactions with organic matter in the water, converting harmful organic matter in the water into CO2, H2O, inorganic ions or organic matter that is less toxic and easier to degrade than the original organic matter.
Mechanical effect: The high-frequency vibration of ultrasound directly acts on pollutants and microorganisms in the water, causing the pollutant particles to vibrate and deform strongly, promoting collision and coagulation between pollutant particles and accelerating their sedimentation; at the same time, it also causes fatigue damage to the internal structure of microbial cells, destroying the normal physiological functions of the cells and leading to the death of microorganisms.

Advantages

Efficient degradation of pollutants: It can quickly and effectively destroy the molecular structure of organic matter, degrade various difficult-to-degrade organic pollutants, improve the biodegradability of sewage, and kill bacteria, viruses and other microorganisms to achieve the purpose of disinfection.
Environmentally friendly and pollution-free: No need to add a large amount of chemical agents, avoiding the secondary pollution of water bodies and the environment caused by chemical agents, which is conducive to maintaining the balance of water ecology.
Easy to operate: The operation of the equipment is relatively simple. You only need to set the relevant parameters to run automatically, and the maintenance cost is low. Some equipment also has automatic cleaning function, which reduces the workload of manual maintenance.
Strong applicability: It can be widely used in various types of sewage, such as domestic sewage, industrial wastewater, hospital wastewater, etc., whether it is a large-scale sewage treatment plant or a small sewage treatment facility.
Can be used in conjunction with other technologies: It can be used in conjunction with a variety of sewage treatment technologies such as biological treatment, chemical treatment, membrane separation, etc. to form a synergistic effect and further improve the sewage treatment effect and water quality standards