Description Designed for low-flow water treatment applications, prefabricated 55-gallon FLOWSORB" canisters contain all the operating elements found in a full-scale adsorption system. These small, economical treatment systems hold 180 pounds of granular activated carbon for applications including: • Small wastewater streams • Groundwater remediation • Underground storage tank leaks • Well pump tests • Product purification or de-colorization • Tank cleaning water treatment • Batch water or product treatment • Carbon adsorption pilot testing • Emergency spill treatment • Monitoring well water treatment