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US 7,582,198 B2Granted
Water treatment system and method
AssigneeSiemens Water Technologies Holding Corp.
InventorsFrederick Wilkins, Evgeniya Freydina, Aytac Sezgi, Reshma Madhusudan, Anil D. Jha
Life of this patent
Estimating the term…
Abstract
A method and apparatus for producing purified water. An electrochemical system can be configured to pass product water through depletion compartments as well as a cathode compartment. An electrochemical apparatus may also be configured to pass concentrate through both concentrating compartments and an anode compartment.
Claims30
A water purification apparatus comprising:
- a cathode compartment;
- an anode compartment;
- at least one ion-depleting compartment fluidly connected to the cathode compartment, the at least one ion-depleting compartment positioned between the cathode compartment and the anode compartment;
- and
- at least one ion-concentrating compartment fluidly connected to the anode compartment, the at least one ion-concentrating compartment in ionic communication with the at least one ion-depleting compartment.
2 more elements
A method of purifying a fluid comprising:
- passing a first fluid through an ion-depleting compartment of an electrochemical device to produce a second fluid;
- passing at least a portion of the second fluid through a cathode compartment of the electrochemical device;
- passing a third fluid through an anode compartment of the electrochemical device to produce an anolyte;
- and
- passing at least a portion of the anolyte through at least one ion-concentrating compartment of the electrochemical device.
2 more elements
A method of purifying water comprising:
- passing a first portion of a first water stream through a cathode compartment of a water purification apparatus to produce a second water stream;
- passing at least a portion of the second water stream through at least one ion-depleting compartment of the water purification apparatus to produce purified water stream;
- passing a second portion of the first water stream through at least one ion-concentrating compartment of the water purification apparatus;
- passing the second portion of the first water stream through an anode compartment of the water purification apparatus;
- and
- reducing the LSI of the second portion of the first water stream.
3 more elements
A method comprising:
- passing a first portion of a first fluid through an ion-concentrating compartment of an electrochemical device to produce a second fluid;
- passing a second portion of the first fluid through an ion-depleting compartment of the electrochemical device to produce a third fluid;
- reducing the pH of the second fluid in an anode compartment of the electrochemical device;
- and
- reducing the corrosiveness of the third fluid.
2 more elements
Dependencies are inferred from the claim text.