C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 1/32 (2006.01) C02F 1/78 (2006.01)
Patent
CA 2132929
ABSTRACT OF THE DISCLOSURE An ultraviolet-based or dual mode water purifying system operates under household water pressure to provide a batch treatment of contaminated water. Treated water is stored in a pressurized reservoir, from which it may be released for use. A treatment cycle is initiated by a drop in pressure within the system, which occurs when sufficient water has been withdrawn from the reservoir. The pressure drop is detected by a pressure gauge linked to a UV lamp dimmer, which causes the UV lamp to change from a reduced-output standby mode to an operative mode. The dimmer may be further linked to a thermostatic switch positioned adjacent the lamp, to reduce the output of the lamp when the temperature exceeds a predetermined level, and to a backwash event control, to increase the lamp output to the operative level during filter backwash. The UV lamp may also be employed to generate ozone, which is reacted with the water in an ozone/water contactor upstream of the UV water exposure chamber, and that constitutes a helical tube with ozone being introduced to the fluid at the base of the tube and permitted to rise with the fluid through the tube. A filter may be provided between the contactor and the UV exposure chamber to remove suspended particles.
Szabo Louis
Zahl Adrian
LandOfFree
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