WAR systems can be field-erected units that are able to handle large volumes, or shop-fabricated, skid-mounted units designed for flows as low as 2 gallons per minute.

WAR systems regenerate the spent carbon as a slurry, so there are no expensive, labor-intensive dewatering steps required. Carbon recovery rates of 90 percent or more are common. At the same time, the process oxidizes the organic sludge associated with the spent carbon, reducing the sludge to a small amount of sterile ash. This eliminates the expense and liability of sludge disposal. These systems are ideal for PACT systems where virgin carbon rates exceed approximately 2,000 pounds per day.