Cavitating

Ultrasound


The patented ULTRAWAVES high-performance ultrasonic systems have a compact design and increase efficiency in the production of environmentally friendly energy. This makes them easy and uncomplicated to integrate into existing plants.

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New design with variable number of modules

The new high-performance ultrasonic system is designed in such a way that the biomass hits the sonotrodes head-on from left to right and is passed by them in loops. On the one hand, this prevents deposits within the individual chambers. On the other hand, the vibrating formations can work more efficiently and need to be serviced less frequently, as the biomass does not adhere to the sonotrode tips. Due to its modular design, the new high-performance ultrasonic system can be flexibly adapted to the system size. As a rule, it consists of three to five consecutive modules – depending on the volume flow to be handled.

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Ultrasound desintegration

High-performance ultrasound technology allows cavitation to reveal liquids and suspension, the forces of which can destroy any robust surface. Ultrasound is sound with frequencies beyond the hearing sound, i.e. from 20 kHz to the megahertz range. In aqueous media, ultrasonic waves cause periodic compression (pressure) and elongation (pull, vacuum) of the sonicated medium. High-intensity ultrasound leads to tearing up the water phase in the low pressure phase, which leads to the formation of microscopic cavities in the liquid. These bubbles are filled with water vapor or gas. They grow in tensile phases and shrink in pressure phases until they implode. This event is called cavitation, an operation under extreme (adiabatic) conditions. On a microscale, pressures of 500 bar and a temperature of 5,000°C are generated. In the frequency range of 20 to 100 kHz, particularly large cavitation bubbles are produced, which cause extreme mechanical shear forces during decay. These forces generated by ultrasound are able to destroy any surface, however robust it is.

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Effect on bacterial, algae and plant biomass

Ultrasonication of higher intensity causes the digestion of biomass. Our newly developed ultrasonic systems first break down agglomerates of biomass at a short sonication time. The total surface area of the biomass suspension is increased. Further sonication opens the biomass cells so that the cell ingredients leak out and go into solution. Enzymes are released in bacteria. The sonicated biomass is more readily available as a substrate for active microorganisms and is better degraded in the biodegradation process.


Desintegration of Biomass in Wastewater Treatment Plants

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Disintegration of biomass in wastewater treatment plants


Desintegration of Biomass in Biogas plants

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Disintegration of biomass in biogas plants

Biodegradation processes are intensified, i.e. the use of ultrasound results in a greater yield of the final product and fewer residues. As a result, for example, anaerobic sludge treatment results in increased biogas production and less residual sludge.