Patent ID: 7060189

Claim:
A method of recycling wash solution from a power washer comprising; filtering wash solution through a first filter assembly under ambient pressure to form a first filtered wash solution and allowing the first filtered wash solution to drop a first distance into a first holding tank before contacting a surface of the first filtered wash solution being contained in the first holding tank, the first distance being sufficient to aerate the first filtered wash solution in the first holding tank; filtering the first filtered wash solution through a second filter assembly under ambient pressure to form a recycled wash solution and allowing the recycled wash solution to drop a second distance into a recycled wash solution tank before contacting a surface of the recycled wash solution being contained in the recycled wash solution tank, the second distance being sufficient to aerate the recycled wash solution in the recycled wash solution tank; supplying the recycled wash solution to a power washer; washing an object with the recycled wash solution; collecting wash solution from the washing step; and supplying at least a portion of the collected wash solution to the first filter assembly for recycling.