A Ultra-High Pressure Water Jetting (UHPWJ) hydro-blasting/cleaning system for surfaces, comprising: - a mobile robot or a lifting and/or handling equipment, like a cherry picker, adapted to be displaced on or next to the surface to be hydro-blasted/scoured, said mobile robot carrying a cleaning head with a shell forming a bell adapted to confine the projected water and to capture, at source, the waste hydro-blasted/scoured by the projected water on the surface, said bell having at least one fluidic inlet with a water nozzle to project water inside the bell and at least one fluidic outlet, - a suction tank accommodating a cyclone separator adapted to separate the water containing the hydro-blasted/scoured waste from air, the suction tank having at least one fluidic inlet connected at the fluidic outlet of the shell, and at least two fluidic outlets, - a stationary part comprising: • a UHP water feeding pump, connected to the fluidic inlet of the bell, in order to project water inside it, • a vacuum suction device, connected to one of the fluidic outlet of the suction tank such, in order to suck the water containing the waste hydro-blasted/scoured inside the bell, • a filtering and collecting unit comprising at least one fluidic inlet connected to the other fluidic outlet of the suction tank, in order to collect the water containing hydro-blasted/scoured waste, said unit comprising at least one filtering device to separate the water from the hydro-blasted/scoured waste and at least one water tank connected downstream to the filtering device, in order to collect the filtered water, characterised in that said mobile robot carries said suction tank. - a mobile robot or a lifting and/or handling equipment, like a cherry picker, adapted to be displaced on or next to the surface to be hydro-blasted/scoured, said mobile robot carrying a cleaning head with a shell forming a bell adapted to confine the projected water and to capture, at source, the waste hydro-blasted/scoured by the projected water on the surface, said bell having at least one fluidic inlet with a water nozzle to project water inside the bell and at least one fluidic outlet, - a suction tank accommodating a cyclone separator adapted to separate the water containing the hydro-blasted/scoured waste from air, the suction tank having at least one fluidic inlet connected at the fluidic outlet of the shell, and at least two fluidic outlets, - a stationary part comprising: • a UHP water feeding pump, connected to the fluidic inlet of the bell, in order to project water inside it, • a vacuum suction device, connected to one of the fluidic outlet of the suction tank such, in order to suck the water containing the waste hydro-blasted/scoured inside the bell, • a filtering and collecting unit comprising at least one fluidic inlet connected to the other fluidic outlet of the suction tank, in order to collect the water containing hydro-blasted/scoured waste, said unit comprising at least one filtering device to separate the water from the hydro-blasted/scoured waste and at least one water tank connected downstream to the filtering device, in order to collect the filtered water, • a UHP water feeding pump, connected to the fluidic inlet of the bell, in order to project water inside it, • a vacuum suction device, connected to one of the fluidic outlet of the suction tank such, in order to suck the water containing the waste hydro-blasted/scoured inside the bell, • a filtering and collecting unit comprising at least one fluidic inlet connected to the other fluidic outlet of the suction tank, in order to collect the water containing hydro-blasted/scoured waste, said unit comprising at least one filtering device to separate the water from the hydro-blasted/scoured waste and at least one water tank connected downstream to the filtering device, in order to collect the filtered water,