Pressure washing apparatus with ozone generator

A pressure washing apparatus for washing an object having a contaminant and debris, said apparatus being arranged to recover the contaminant, said apparatus comprising:

• a floor arranged to support said object;
• a flowing mechanism or flowing a washing agent over said object to remove said contaminant and said debris;
• a basin mounted below said floor for receiving said washing agent and said contaminant, the basin including a plurality of chambers, the chambers including at least one receiving chamber arranged to receive the washing agent and the contaminant after the washing agent has been flowed over the object and at least one staging chamber that does not directly receive the washing agent after the washing agent has been flowed over the object but is in fluid communication with the at least one receiving chamber, wherein the washing agent becomes less contaminated as the washing agent passes from the at least one receiving chamber to the at least one staging chamber, said flowing mechanism being arranged to draw said washing agent from said basin to form a substantially closed loop;
• a filter mounted below said floor, said filter being arranged to receive said debris, said filter further being arranged to allow said washing agent and said contaminant to flow through the filter and into the at least one receiving chamber;
• an ozone generator;
• a gas-liquid mixer connected to said ozone generator to inject ozone into said basin;
• and
• a first pump arranged to draw said washing agent from the at least one staging chamber through a first inlet to said basin, the first pump further being arranged to force said washing agent through said mixer and to return washing agent through a first outlet to said basin.

A method for washing an object with a washing agent, said object having a contaminant and debris, said method comprising:

• placing said object on a floor, said floor being arranged substantially over a receptacle arrangement, said receptacle arrangement including a basin and a filter, the basin further including at least one receiving chamber and at least one staging chamber, wherein the filter is mounted below said floor;
• flowing a washing agent over said object to remove said contaminant and said debris;
• capturing said debris in said filter, wherein said filter is arranged to enable said washing agent and said removed contaminant to flow therethrough and into the least one receiving chamber;
• circulating the washing agent through a circulation path defined by the at least one receiving chamber and the at least one staging chamber, wherein the washing agent becomes less contaminated as the washing agent passes from the at least one receiving chamber to the at least one staging chamber;
• injecting ozone into said basin;
• pumping said washing agent from the at least one staging chamber;
• and
• returning said washing agent through a first outlet to said basin.