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US 2011/0079520 A1Published application
Method and Apparatus for the Electrochemical Treatment of Liquids Using Frequent Polarity Reversal
OwnerJames A. Tretheway, Brian R. Hale +5inventors
InventorsJames A. Tretheway, Brian R. Hale, Ajit K. Chowdhury, Jeremy J. Vogel, Dennis E. Bahr, Myron F. Miller, Karl W. Marschke
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Abstract
An electrolytic method and apparatus for treating liquids using a flow cell with widely spaced electrodes and polarity reversing power designed to prevent electrode fouling and provide for long continuous liquid treatment running times.
Claims24
A liquid treatment system comprising:
- a treatment cell receiving a liquid to be treated at a rate of at least 5 gallons per minute;
- at least a first and a second electrode positioned within the treatment cell and having a separation of no less than 5 mm permitting the liquid with suspended solids or an organic load to pass therebetween wherein at least one of the electrodes has a surface selected from the group consisting of metals, metal oxides and doped diamond;
- a polarity reversing power supply connected across the at least two electrodes, the power supply providing an alternating positive and negative electrical power;
- and
- a power supply controller communicating with the polarity reversing power supply to provide a polarity reversal of the electrical power to the at least two electrodes during a cycle period having a length of at least 10 seconds and no more than 60 minutes.
2 more elements
A method of treating a liquid with suspended solids or organic load comprising the steps of:
- passing the liquid through a treatment cell containing at least a first and second electrode positioned within the treatment cell and having a separation of no less than 5 mm, wherein one or more of the electrodes has surfaces selected from the group consisting of metals, metal oxides and doped diamond;
- wherein said liquid flows through the treatment cell at a rate of at least 5 gallons per minute;
- applying power to the electrodes the power having an alternating negative and positive polarity during a cycle period having a length of at least 10 seconds and no more than 60 minutes.
Dependencies are inferred from the claim text.