The aim of This project is to slightly purify water coming from washed hands (gray water) with filtration to a temporary tank and save that water and reuse it by hydrological pumping (without electricity) to the flash tank if there is a need.
If there is no space in the flash tank the temporary tank saves the water until there is any space.
If the temporary tank is full gray water goes to the sewerage system.
If there is no gray water available by a floating handle valve the flash tank uses the purified urban water.