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    • 19. 发明专利
    • WATER CIRCULATION SYSTEMS WITH AIR STRIPPING ARRANGEMENTS FOR MUNICIPAL WATER TANKS, PONDS, AND OTHER POTABLE BODIES OF WATER
    • CA2752368A1
    • 2012-03-19
    • CA2752368
    • 2011-09-16
    • MEDORA ENVIRONMENTAL INC
    • SIMNIONIW COREY MZENT JONATHAN LWALTER DOUGLAS PBLETH JOEL JTORMASCHY WILLARD R
    • C02F1/20B01D19/00C02F1/00
    • Water circulation systems with air stripping arrangements to treat and remove undesirable disinfectant byproducts from potable water in municipal water tanks, ponds, and other bodies of water. The systems include a flotation platform, dish, draft tube extending downwardly into the depths of the tank or other body of water, and an impeller to draw water from the depths of the tank up through the draft tube to be discharged outwardly of the dish to create a primary circulation pattern and an induced, inner or secondary circulation pattern. Each system additionally includes an air stripping arrangement positioned adjacent and about the upper portion of the draft tube and adjacent an upper portion of the secondary flow. The air stripping arrangement includes a plurality of submerged sets of air manifolds wherein pressurized air is supplied to the air manifolds and driven out of them in bubbles to create a treatment zone immediately above each set of manifolds. The air bubbles rise through the treatment zone to contact and treat the water in the upper flow of the primary circulation pattern and will additionally induce the inner, secondary circulation pattern to rise up into the treatment zone and also be treated to strip out undesirable disinfectant byproducts such as trihalomethanes (THM's). Water not initially passing through a treatment zone is also mixed with treated water to dilute the THM's in it. In this manner and over time, virtually all of the water in the tank or other body of water will be treated/diluted to eventually reduce the undesirable disinfectant byproducts to an acceptable level.