Process and apparatus for removing radon from water

Details Process and apparatus for removing radon from water Process and apparatus for removing radon from water

1992-06-05

1994-01-18

Cintins, Ivars

Liquid purification or separation

Processes

Chemical treatment

95116, 95159, 96134, 210 97, 210170, 210188, C02F 158

Patent

active

052797465

ABSTRACT:
A process for treating drinking water at greater than atmospheric pressure to remove radon and the apparatus for carrying out the process. The process involves introducing water under pressure into a pressure vessel maintained at a pressure about equal to the pressure of the water to be treated. This water is continuously fed onto the upper surface of a packed column and allowed to fall downwardly through the packed column. A gas is drawn upwardly through the packed column causing the radon gas to be expelled from the water into the gas, and the gas stream is forced through a carbon absorber. Preferably, the tank is cylindrical and has a blower which draws air upwardly through the packed column and then returns it downwardly through a gas conduit thereby continuously recirculating the gas. A carbon absorber also maintained at the same pressure as the pressure vessel is in the gas-full passageway and absorbs radon gas. The water level in the bottom of the pressure vessel is maintained by introducing pressurized gas through a control valve operated by a liquid level sensor.

REFERENCES:
patent: 4054429 (1977-10-01), Ostojic et al.
patent: 4371383 (1983-02-01), Rost
patent: 4869832 (1989-09-01), Lamarre
patent: 5100555 (1992-03-01), Matson
patent: 5149343 (1992-09-01), Sowinski

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