28KHZ or 40KHZ Ultrasonic Algae Removing Transducer  For Fish Pond/Lake/Swimming Pool

The ultrasonic algal transducer has the function of degradation of organic pollutants and algae and algae inhibition, its main mechanism is that water produces "cavitation effect" under the action of ultrasonic radiation. Water has undergone a series of dynamic cycle processes, such as alternating oscillations, dilatation, compression and collapse under the "cavitation effect", producing instantaneous and microcosmic. High temperature (> 5000K) and high pressure (> 5 * 107 Pa) form a hot spot (Hotopot). After a few microseconds, the hot spots are cooled instantaneously, with a strong shock wave and a micro jet that reaches 100m/s, which creates an extreme physical environment for organic and algae. The O-H bond of water is broken and hydrogen peroxide is generated, which opens up a chemical reaction channel, increases the chemical reaction speed, and degrades the pollutants in the water under the action of high temperature, high pressure and hydroxyl radical. The ultrasonic wave action on water body, the resonance effect of the algae, and the water passing through the specially designed ultrasonic transducer of the submerged water body to the water at a specific frequency. Water is a good conductor of sound waves. This high frequency wave is spread in water. It has little attenuation and can be worn far away. For example, the effective emission radius of a 220V80W ultrasonic device is 100 ~ 180m, and the effective emission angle is 180 degrees. Algal cells produce resonance under the specific frequency of ultrasound, which causes the cell membrane to crack, and the algae decay and disappear. At the same time, ultrasonic technology can also handle many kinds of bacteria, viruses and all fungi. Many hydroxyl radicals produced by ultrasonic wave can degrade algae secreted by algae, and do not cause two pollution, and have no toxic effects on other aquatic organisms and human beings.

The ultra-sonic wave device system releases ultra sonic wave, which creates a sudden hotpot, with high temperature and high pressure, after a series of power cycle, like oscillation, expansion, compression and collapse. Several seconds later, the hotpot cooled instantly, with a strong shock wave, which generates an extreme physical environment for organism and alga. Alga’s cell membrane broke down at this specific frequency of ultra-sonic wave, and finally decline and disappear.
electronic algae controller Application fields:
Plants for potable and waste water treatment
Sedimentation tanks
Cooling towers
Ponds
Lakes
Outdoor swimming pools
Irrigation systems
electronic algae controller Features

Studies have shown that ultrasonic wave has the effect in the water and can obviously resist algea growth under specific conditions.

Low-frequency ultrasonic wave:low-power & low-frequency ultrasonic wave has a strong control effect on blue-green algae which are the most harmful in the water,and has a good inhibitory effect on green algae and diatoms.The removal effect of the blue-green algae with frequecy of 20~40 kHz and power density of 0.2~0.5 W/cm2 was better than that of green algae and diatoms,and that of anabaena fischeri was better than thar of microcystis.
High-frequency ultrasonic wave:when the ultrasonic frequency is 50~80kHz,the concentration of tree radicals in the water reaches a peak,and the removal rate of microcystis in the water is the highest,which indicates that oxidation is more effective in the removal of microcystis.

Operating Mode:Intermittent work is more effective,working 10 to 15 times a day,each time working 5 to 15 minutes has better inhibition effect on algae.
Studies have shown that under certain conditions,ultrasonic wave can also eliminate the aquatic organisms in the sound field an kill the eggs and larvae of aquatic organisms.
Ultrasonic parameters:when the frequency is 20~30 kHz and the power density is 0.3~0.5 W/cm2,the efficet of repelling and killing aquatic organisms,especially Marine organisms,is obvious.
Processing time is 10~30 sec.
The water temperature of 30 ℃~45℃ is best.

According to the Rayleigh-Plessent formula:
R is the bubble radius; η is the viscosity coefficient; σ is the surface tension; ρ is the medium density; and P0 is the ambient pressure. It can be estimated that the optimal inhibition condition of microcystis and anabaena common in water is between 20-80 kHz.
3.2 Ultrasonic sound intensity (power) is also an important factor in ultrasonic algae removal
Sound intensity is generally expressed in W/cm?. At 15 kHz, the required sound intensity for cavitation bubbles is 0.16-2.6 W/cm?, and at 500 kHz, the required sound intensity for cavitation bubbles is 100-400 W/cm?. In theory, the increase in sound power at the same frequency can make the cavitation more intense and the algae removal effect is better. However, in practical applications, algae cells have a certain saturation effect on sound waves. At the same time, excessively high sound intensity will not only affect the aquatic organisms, but also generate a large number of cavitation bubbles, which will hinder the spread of sound waves in the water body and affect the range of algae removal. Moreover, too strong cavitation will The algae cells are directly broken, releasing the algal toxins in the cells into the water, which in turn affects the water quality.
Studies have shown that low-intensity ultrasonic radiation does not affect aquatic plants and animals, and it is also an ideal combination of algae removal and algae removal. Therefore, in practical applications, low-intensity ultrasonic radiation is selected.
3.3 Ultrasonic radiation time (frequency) will also affect the performance of ultrasonic algae removal

28KHZ or 40KHZ Ultrasonic Algae Removing Transducer  For Fish Pond/Lake/Swimming Pool