Micro and nano bubble generator is the main component to generate micro and nano bubbles. People usually call the bubbles that exist in the water with the size of 10 to tens of microns micron bubbles; the bubbles with the size of hundreds of nanometers or less are called nano bubbles, and the mixed state of bubbles that exist in the middle of both sides is called micro and nano bubbles

nano bubble machine Technology Introduction.

People usually call the bubbles existing in the water with the size of 10 to tens of microns micron bubbles; the bubbles with the size of hundreds of nanometers or less are called nano bubbles, and the mixed state of bubbles existing in the middle of the two sides is called micro and nano bubbles.

nano bubble generator characteristics.

(1) Long residence time in water
After the general bubble is generated in water, it will quickly rise to the water surface and rupture and disappear, i.e. the existence time is short. The micron bubble in the water from the generation to the final rupture disappears will have tens of seconds or even up to a few minutes. Some research data show that the rising speed of 1mm diameter bubble in water is 6m/min, while the rising speed of 10um diameter bubble in water is 3mm/min. It can be seen that the rising speed of micron bubble in water is very slow, so it can stay in water for a longer time.

(2) Electricity
The surface charge of micron bubbles is negative, and it is relatively high compared with ordinary bubbles, generally the surface load of bubbles below 30um is about -40mV, which is one of the reasons why micron bubbles can gather together for a long time without breaking. Using the negative charge of micron bubbles, it can adsorb the positively charged substances in water, which plays a good effect on the adsorption and separation of suspended substances or pollutants in water removal.

(3) Self-pressurization and dissolution
The pressure inside the bubble is related to the surface tension, and the diameter of the bubble is about small, the higher the internal pressure. Since the diameter of micron bubble is small and the specific surface area is large, the pressure inside it is much larger than the pressure of external liquid, and formally due to this advantage of internal pressurization and large specific surface area of micron bubble, its gas dissolution capacity is as much as several hundred times that of millimeter bubble. Because the solubility has a great relationship with the pressure, so when the internal pressure of micron bubble increases to a certain que value, it will make the interface reach the supersaturation state and dissolve itself slowly while dissolving more gas inside the bubble into the water.

(4) Shrinkage
Micron bubble in the water after the generation of its own pressurization, will continue to shrink or expand, its diameter is always changing. According to the latest research, the bubble of 20um~40um will search to about 8um with the speed of 1.3um/s, and then the contraction speed will increase sharply, after which it may further split into nano bubbles or dissolve completely in water.
(5) High interfacial dynamic potential
The surface of micron bubble will adsorb charged ions such as OH-, and around this OH- ion layer, there will be distributed counter-charged ion layer such as H+, so that the surface of micron bubble forms a double electric layer, the potential of the double electric layer interface is also known as the interface kinetic potential, the high or low interface kinetic potential largely determines the adsorption performance of the micron bubble interface. Because of the contraction of the micron bubble, the charge ions gather in the interface of the bubble in a large number within a period of time, until the bubble is completely broken and dissolved, the interfacial dynamic potential will always increase, showing the better adsorption performance of charged particles in water.

(6) generate free radical ions
Generally come to water, 10um below the micron bubble in the case of continuous contraction, the double electric layer of charge density will rapidly increase until the bubble rupture, has reached a very high concentration of positive and negative charges instantaneous discharge will be released from the accumulated energy, producing a large number of free radical ions, such as oxygen ions, hydrogen ions, hydroxide ions, etc.. And the hydroxyl radical has a strong oxidation effect, can oxidation decomposition of some difficult to degrade organic pollutants, to play a very good effect of water purification.

(7) High efficiency of oxygen mass transfer
In the process of aeration treatment of wastewater, the oxygen transfer efficiency is one of the important factors affecting the efficiency of wastewater treatment, and the size of bubble diameter is inseparable from the oxygen transfer efficiency during aeration. Since micron bubbles have a large specific surface area, they can stay in the water for a long time, and with their own pressurization, the mass transfer efficiency at the gas-liquid interface can be continuously enhanced.

The use occasions of micro-nano bubble generator.
1、Oxygen supply within fish farming.
2、River purification, livestock drainage purification.
3、Increase of dissolved oxygen during hydroponic cultivation.
4、Ozone mixture generator sterilization, decolorization, deodorization.
5, promotion of fermentation culture of fermented foodstuffs.
6, chemical plants gas-liquid reactor.
7, food processing class cleaning, disinfection.

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