- Ultrasound Sludge Disintegrator



Sludge disintegration has been used widely throughout Europe and is finally making its way into the United States. The Sonolyzer ultrasound technology achieves effective sludge reduction. The advantage of ultrasound treatment is that it does not require chemicals or extreme environmental conditions (either pressure or temperature). Ultrasound treatment disintegrates the sludge through a process known as “ultrasonic cavitation”.

Ovivo is the exclusive licensee of this worldwide innovative sludge treatment technology utilizing an ultrasonic reactor and oscillating units. The Sonolyzer technology is the product of years of development between several cutting-edge companies, ULTRAWAVES GmbH (A commercial business born from the research activities at the Technical University of Hamburg-Harburg) and SONOTRONIC Nagel GmbH (A worldwide provider and manufacturer of ultrasonic equipment serving a variety of industries for the last 30 years).

As part of what Ovivo offers, we specialize in the design and supply of Anaerobic Digestion equipment used in the treatment of municipal and industrial wastewater (including waste to energy projects). The Anaerobic Digestion products include, covers for containing the methane (steel fixed covers, steel gasholder covers, and membrane gasholder covers), sludge mixers to increase VS Destruction and methane production (including draft tube mixers and the LM mixer), and the Sonolyzer sludge disintegrating equipment. All of the products provided are recognized and used around the world.

Ultrasound is present in a wide range of intensities in frequencies beyond human hearing (20KHz or more).

In a medium like water, sound propagation is accomplished through waves exhibiting a continuous transition through the medium in a two-phase pattern: rarefaction (negative pressure) and compression (positive pressure). During these alternating cycles, the magnitude of negative pressure in the areas of rarefaction eventually becomes sufficient to cause the liquid to fracture, causing cavitation.

Cavitation is the rapid creation, growth and collapse by implosion of microscopic bubbles. The collapse and implosion of a myriad of cavitation “bubbles” through an ultrasonically activated liquid produces the cavitation effect commonly associated with ultrasonics.

Ultrasound applied at high intensity and low-to-medium frequencies generates cavitation in water. The use of cavitation to rupture or disintegrate biomass is the prime application of ultrasound for sludge treatment and minimization.

Sonication of the return activated sludge (RAS) and/or WAS is used to obtain the following benefits:

  • Control of filamentous bulking and foaming sludge
  • Improvement of secondary clarifier sludge settling characteristics
  • Sludge Volume Index control
  • WAS reduction
  • Sludge minimization for Aerobic Digestion Process
  • Production of internal sources of carbon for denitrification processes
  • Elimination of septic conditions in secondary clarifiers

  • Swift payback period
  • Very small footprint
  • Simple installation
  • Low maintenance, simple operation

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