Our Cavitator capitalises on cavitation which is the formation of vapour cavities in a liquid that are the consequence of forces acting upon the liquid. When the voids implode, it can generate an intense shock wave. Cavitation can be harnessed either in a hydrodynamic or acoustic manner. The Cavitator™ utilises either type of cavitation dependent on the process requirement.
How it Works
The benefits of acoustic cavitation owes to its ability to concentrate acoustic energy in small volumes. This results in local temperatures of thousands of kelvin, pressures of GPa, local accelerations 12 orders of magnitude higher than gravity. In a few words, it converts acoustics into extreme physics.
The acoustic cavitation pressures generated will de-agglomerate and break up scale, inorganic precipitate, organic or hydrocarbon residue, particulates or bacteria from as large as 5/8 inches to nano sizes and prevent fouling or plugging. It can also separate fluids of different densities e.g. oil from water, without demulsifying chemicals.
Acoustic cavitated H2O undergoes thermal dissociation to generate hydroxyl radical (OH.) as the agent to oxidize and deactivate the pollutants. The hydroxyl radicals acts as catalyst to accelerate and amplified the oxidative power of external oxidizing agents e.g. chlorine dioxide by a factor of 2 to 5 times.
The efficacy of acoustic waves remains as the waves propagates to as far as 1.5 km or more.
Hydrodynamic cavitation can be described as the formation of nuclei, growth and collapse of bubbles generated from liquid undergoing pressure changes when flowing through constrictions.
It splits polluting molecules including bacteria by creating cavities; this allows treatment chemicals e.g. chlorine dioxide to instantaneously penetrate to the DNA levels of the bacteria and kill instantly.
The collapse of bubbles also induces localized supercritical conditions i.e. extreme temperature and pressure. Solvents and petroleum contaminants are destroyed by the cavitation bubbles itself via thermal decomposition at a very high rate with minimum contact time.
Hydrodynamic cavitated H2O undergoes thermal dissociation at 10 times more than acoustic cavitation to generate hydroxyl radical (OH.) as the oxidizing agent at the interfacial sheath between the bubble and the surrounding liquid or in the bulk solution.
Cavitation Technology Methodology
Oily Water Seperation
- Precision control in energy direction by supersonic flow.
- Most intense cavitation method.
Water Disinfection Treatment
- Reduce disinfection chemical by 50%
- Prevent biological fouling
- Prevent corrosion and scale
- Minimized maintenance
- Reduce make-up water by 20%
- Eliminates up to 50% of blowdown
- Chemical free
- Minimized maintenance
- Increased in soluble COD due to cell-lysis hence providing more food for aerobic/anaerobic treatment
- Improved plant throughput
- Lowering sludge viscosity which translates to better mixing and lower power requirement
- Reduced sludge handling and disposal cost
- Improved dissolved oxygen through generation of nano air bubbles hence accelerate digestion rate