Multi-stage washer including a water treatment system

A multi-stage can washer comprising:

• a conveyor system structured to transport cans through the multi-stage can washer;
• a piping system structured to transport water to a number of nozzles structured to spray the water onto cans being transported by the conveyor system;
• one or more feed tanks structured to provide water to the piping system and to collect water sprayed by the nozzles, each feed tank including a skimming trough structured to skim water from a top portion of the feed tank;
• and
• a water treatment system structured to receive contaminated water from the skimming trough corresponding to a last one of the one or more feed tanks, to clean the contaminated water, and to provide the cleaned water to a first one of the one or more feed tanks, the water treatment system including:
• a pressure vessel structured to mix ozone or air with the contaminated water to create gaseous water;
• a frothing cell structured to cause bubbles to form in the gaseous water to form a froth, to skim off and dispose of the froth, to degas the gaseous water to remove remaining gases, and to output degassed water;
• and
• a filtration system structured to receive the degassed water, to filter solid particles from the degassed water to form cleaned water, and to provide the cleaned water to a first one of the one or more feed tanks.