Function principle cavitation:

Cavitation (Latin cavitare "hollow out") is the formation and dissolution of vapor-filled cavities (vapor bubbles) in liquids.

The most common cause of cavitation is fast-moving objects in a fluid such as impellers of centrifugal pumps, water turbines or propellers. According to Bernoulli's law, the higher the velocity, the lower the static pressure of a liquid. If the static pressure falls below the evaporation pressure of the liquid, vapor bubbles form. These are then entrained mostly with the flowing liquid in areas of higher pressure. As the static pressure rises above the vapor pressure, the vapor in the cavities suddenly condenses and the vapor bubbles collapse. This extreme pressure and temperature peaks occur.

Cavitation has a high mechanical destructive power

Due to the implosion of the vapor or air bubbles, temperatures >5.000°C and pressures above 1.000 bar are created at this location. The implosions create shockwaves that release enormous shear forces from the accelerated water molecules in different directions.

The released oxygen also forms hydroxyl radicals which have a much higher oxidation effect than chlorine or chlorine dioxide.

The pictures show the uncontrolled forces of the cavitation effect. APW controls the water pressure and the size of the resulting air bubbles (<0.005 mm). The destructive forces work only in the smallest space and are only sufficient to destroy cell walls of microorganisms (amoebae) or bacteria and germs. Containers, pipelines or seals are not attacked. Except for the rotor and the vortex nozzle in the generator, all components of the system that come into contact with water are maintenance-free. (Not for pumps and control)

Process features:

 Complies with the regulations of the TrWV and the guidelines of the DVGW 551

 Works without added chemicals - Environmentally friendly

 Permanent protection through multibarrier system, which achieves not only local but also peripheral effect: Cold water and circulation water Sterilization (protection against recontamination) Water stabilization (in case of long stagnation).

Biofilm destruction and removal without chemical additives.

 No scalding protection required on the fitting, as the tank temperature can be lowered to up to 35 ° C.

 No inadmissible change of drinking water according to TrWV

 Suitable for every pipe material

 Lower operating temperatures (35-50 ° C storage tank temperature), thus no impairment and additional problems due to lime failure.

 Reduction of heat transfer to the cogeneration network in existing plants

 Low operating costs, low service and maintenance costs

 Saving of human resources (descaling, repairs due to overheating, thermal flushing)

 stabilization of the water in stagnation lines by deprivation of nutrients; Reduction of the AOC value, increase of the oxygen content (effect also in dead lines)