Decontaminated fluids and biocidal liquids
OwnerScott John MacGregorinventor
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Abstract
There is disclosed a method for the purification or decontaminating of contaminated a gased and liquids and for the production of biocidal liquids that have a finite activity period. The method comprising the steps of aerating or sparging a liquid (17) with a gas such as to provide a suspension of bubbles (17A) within the body of the liquid, and then subjecting the aerated or sparged liquid to a pulsed electrical field having a magnitude sufficiently high to create ionisation activity in the gas bubbles (17A).
Claims20
A method for producing a purified or decontaminated fluid or a biocidal liquid with a finite activity duration, the method comprising the steps of aerating or sparging a liquid (17) with a gas, the sparging being such as to provide a suspension of gaseous bubbles (17A) within the body of the liquid, and subjecting the sparged liquid to a pulsed electrical field having a magnitude sufficiently high to create ionisation activity in the gas bubbles (17A).
The method as claimed in any one of the preceding claims, wherein the electrical field is in the form of unidirectional pulses of short duration, short pulses of alternating polarity, or a conventional sinusoid.
The method as claimed in any one of the preceding claims, wherein the aerating or sparging gas is carbon dioxide (CO2), Nitrogen (N2), Oxygen (O2) or Air.
The method as claimed in any one of the preceding claims, wherein the aerating or sparging gas is ionised before injection into the liquid.
The method as claimed in any one of the preceding claims, wherein the ionisation activity in the gas bubbles produces a release of monoatomic oxygen plus free radicals and other gaseous species.
The method as claimed in any one of the preceding claims, wherein the ratio of gas-to-liquid flow rate through the electrical field lies in the range 0.05 to 0.2.
The method as claimed in any one of the preceding claims, wherein the ionisation activity in the gas bubbles delivers a dose of ozone to the fluid under treatment in the range 2 to 24 mg per litre.
The method as claimed in any preceding claim, wherein the sparged liquid is additionally subjected to pressurisation.
A biocidal liquid when produced by the method of any preceding claim.
Apparatus for producing purified or decontaminated fluid or a biocidal liquid, the apparatus comprising a means (11) for delivering a flow of liquid to a mixer device, a means of delivering a flow of gas to the mixer device (12), the mixer device (12) being arranged to aerate or sparge the liquid with the gas such as to provide a suspension of gas bubbles within the body of the liquid, an exposure chamber (14) for receiving the aerated or sparged liquid (17) and arranged to subject the liquid to a pulsed electric field having a magnitude sufficiently high to create ionisation activity in the gas bubbles, and means (15) for receiving treated liquid from the exposure chamber (14).
Dependencies are inferred from the claim text.