The compact filters allow the biological treatment of the waters domestic reflue a space particularly meeting place. In their simpler configuration it is composed by a plant of connected lifting to a following form of biological purification of the waste waters.
It is noticed the great development that the photovoltaic solar energy, thermal and wind energies have in many countries, and last period also in Italy with a necessary and new environmental sensibility, it is more often seen always the realization of roofs or other types of photovoltaic and/or thermal coverages that allows also to have notable quantity of electric / thermal energy with considerable economic savings.
The solar energy can be easily used for heating the water, for sanitary use through a solar collector that picks up the sun rays on a plate inside of what it flows the water that is heated.
