The gravitation water vortex power plant is a type of micro hydro power plant which is capable of producing energy using a low hydraulic head of 0.7–3 metres (2 ft 4 in–9 ft 10 in). The technology is based on a round basin with a central drain. Above the drain the water forms a stable line vortex which drives a water turbine.
Gessi iSpa: Feature water aerators to reduce consumption but with little effect on sensation
The Aeration Water Treatment system is used primarily to treat large water bodies in different forms. The cascading fountain type is one of the most popular methods that make use of the FPR or aluminum Cascade aerator.