Methods and stabilized compositions for reducing deposits in water systems
AssigneeBlue Earth Labs, LLC
InventorsJason E. Peters, Stephen D. O'Connor, Chang-jun Yu
Life of this patent
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Abstract
A stabilized mixed oxidant solution may be produced by flowing a starting solution (e.g., salt brine, hypochlorous acid, and/or sodium hypochlorite) through a flow-through electrochemical module including first and second passages separated by an ion permeable membrane while electric power is applied between an anode and cathode in electrical communication with the first and second passages, respectively. An initially acidic anolyte solution received from the first (anode) passage is stabilized by elevating pH to yield a stabilized mixed oxidant solution. Methods of using the mixed oxidant solution are further provided.
Claims29
A method for producing a mixed oxidant solution comprising a plurality of different oxidants, the method comprising:
- flowing at least one starting solution through at least one flow-through electrochemical module comprising a first passage and a second passage separated by an ion permeable membrane while electric power is applied between (i) an anode in electrical communication with the first passage and (ii) a cathode in electrical communication with the second passage, wherein a first solution or first portion of the at least one starting solution is flowed through the first passage to form an anolyte solution having an acidic pH, and a second solution or second portion of the at least one starting solution is simultaneously flowed through the second passage to form a catholyte solution having a basic pH;
- and
- contacting the anolyte solution with a hydroxide solution to attain a pH value of at least about 9.0 to yield said mixed oxidant solution;
- wherein the at least one starting solution comprises at least one of salt brine, hypochlorous acid, and sodium hypochlorite.
A mixed oxidant solution comprising a plurality of different oxidants produced by a method comprising:
- flowing at least one starting solution through at least one flow-through electrochemical module comprising a first passage and a second passage separated by an ion permeable membrane while electric power is applied between (i) an anode in electrical communication with the first passage and (ii) a cathode in electrical communication with the second passage, wherein a first solution or first portion of the at least one starting solution is flowed through the first passage to form an anolyte solution having an acidic pH, and a second solution or second portion of the at least one starting solution is simultaneously flowed through the second passage to form a catholyte solution having a basic pH;
- and
- contacting the anolyte solution with a hydroxide solution to attain a pH value of at least about 9.0 to yield said mixed oxidant solution;
- wherein the at least one starting solution comprises at least one of salt brine, hypochlorous acid, and sodium hypochlorite.
A method for promoting disinfection and reduction of deposits in a water distribution or water recirculation system with a mixed oxidant solution comprising a plurality of different oxidants produced by flowing at least one starting solution through at least one flow-through electrochemical module comprising a first passage and a second passage separated by an ion permeable membrane while electric power is applied between (i) an anode in electrical communication with the first passage and (ii) a cathode in electrical communication with the second passage, wherein a first solution or first portion of the at least one starting solution is flowed through the first passage to form an anolyte solution having an acidic pH, and a second solution or second portion of the at least one solution is simultaneously flowed through the second passage to form a catholyte solution having a basic pH, and contacting the anolyte solution with a hydroxide solution to attain a pH value of at least 9.0 to yield said mixed oxidant solution, wherein the at least one starting solution comprises at least one of salt brine, hypochlorous acid, and sodium, hypochlorite, the method comprising:
- supplying an effective amount of the mixed oxidant solution to the water distribution or water recirculation system.
Dependencies are inferred from the claim text.