Patent ID: 7232525

Claim:
An apparatus for cleaning a tank having an inner surface and a bottom surface, the apparatus comprising: a water recycling tank including an inlet and a conically-shaped bottom having an outlet, wherein a weir separates a clean water compartment and a dirty water compartment; a cutting box in fluid communication with the outlet in the bottom of the water recycling tank including a portable weir bucket selectively suspended within the cutting box and having a top edge over which substantially solids-free fluid may flow, wherein the weir bucket defines a fluid collection area for the substantially solids-free fluid; a plurality of nozzles located within the tank, wherein each nozzle is in fluid communication with the clean water compartment and is operable to discharge clean fluid into the tank to dislodge solids affixed to the inner and bottom surfaces; a pump operable to pump fluid and dislodged solids from the bottom surface of the tank to the inlet of the water recycling tank a separator having an inlet for receiving liquid entering the clean water compartment from the dirty water compartment of the water recycling tank and providing effluent to the clean water compartment.