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US 5,780,860 AGranted
UV water disinfector
AssigneeThe Regents of the University of California
InventorsAshok Gadgil, Vikas Garud
Life of this patent
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Abstract
A UV disinfector with a gravity driven feed water delivery system, and an air-suspended bare UV lamp. The disinfector is hydrodynamically optimized with a laminerizing, perforated baffle wall, beveled treatment chamber, and outlet weir.
Claims41
A UV disinfector providing a narrow distribution of feed water residence time and UV dose, comprising;
- a) a gravity driven feed water delivery system,
- b) a baffle wall downstream of the feed water delivery system, the baffle wall having a plurality of spaced perforations,
- c) an air-suspended UV lamp,
- d) a treatment chamber beneath the UV lamp downstream of the baffle wall, and
- e) an outlet weir at the end of the treatment chamber, the outlet weir defining approximately equal water flow paths through the treatment chamber from each of the perforations.
2 more elements
A UV fluid disinfector, comprising:
- a gravity driven feed fluid delivery system;
- a generally vertical baffle wall downstream of the feed fluid delivery system, the baffle wall having a plurality of spaced perforations oriented for horizontal fluid flow therethrough;
- a treatment chamber immediately downstream of the baffle wall such that the baffle wall defines a first end of the treatment chamber, the chamber including a generally horizontal fluid tray;
- a UV lamp positioned to irradiate fluid in the fluid tray;
- and
- an outlet positioned at a second, opposite end of the treatment chamber.
3 more elements
A UV water disinfector, comprising:
- a feed water delivery system communicating with an inlet chamber;
- a treatment chamber downstream of the inlet chamber, the treatment chamber including a water tray;
- and
- a UV lamp positioned above the water tray to irradiate water in the water tray;
- and
- a baffle wall separating the the inlet chamber from the treatment chamber, the baffle wall including a plurality of spaced perforations configured to suppress introduction of turbulence from the inlet chamber to water flow within the water tray.
3 more elements
Dependencies are inferred from the claim text.