Cleaning vehicle and high pressure cleaning systems

A cleaning vehicle comprising:

• a chassis;
• a grey water reservoir mounted to the chassis and having a pre-filter;
• an aspiration conduit leading into the grey water reservoir upstream from the pre-filter and a vacuum pump adapted to create a vacuum inside the grey water reservoir;
• a filtration subsystem having a vortex separation subsystem connected downstream from the pre-filter and a fabric filter connected downstream from the vortex separation subsystem;
• a filtrate reservoir mounted to the chassis and connected downstream from the filtration subsystem;
• a high pressure hose having an end connected downstream from the filtrate reservoir and another end having a high pressure spray nozzle;
• a filtrate path extending from the grey water reservoir to the high pressure spray nozzle via the pre-filter, the filtration subsystem and the high pressure hose;
• and
• at least one pump adapted to entrain a flow of fluid along the filtrate path such that the high pressure spray nozzle projects a high pressure jet of filtrate;
• wherein the pre-filter includes at least one baffle conduit made integral to the grey water reservoir and having an inlet connected to the grey water reservoir and an outlet vertically offset from the inlet connected to the filtrate reservoir, the outlet offset above the inlet by a vertical spacing distance, the baffle conduit extending obliquely from the inlet and having baffles forming a chicane filtrate path therein,
• wherein the baffles are longitudinally staggered along the baffle conduit and alternatingly projecting from opposite inside walls of the baffle conduit, the baffles all projecting toward the inlet;
• wherein the prefilter defines an outlet of the grey water reservoir downstream of the at least one baffle conduit outlet, the outlet of the grey water reservoir connected to the vortex separation subsystem.