A cyclic process for the efficient generation of chlorine dioxide in dilute solutions
AssigneeTruox, Inc.
InventorRoy W. Martin
Life of this patent
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Abstract
An efficient cyclic process and related method for the in-situ generation of chlorine dioxide from dilute solutions of chlorite anions in open recirculating systems under alkaline pH conditions. The cyclic process provides enhanced inactivation of microbiological organisms while significantly reducing cost and improving safety.
Claims34
A method for implementing the cyclic process to an open recirculating system to achieve enhanced inactivation of microbiological organisms under alkaline pH conditions, the method comprising:
- flowing water through a system in fluid contact with the open recirculating system that produces an aqueous solution comprising an effective amount of activating free halogen and an effective amount of chlorite anions;
- and
- passing the aqueous solution through a conduit to produce a chlorine dioxide solution;
- applying the chlorine dioxide solution to the water in an open recirculating system,
- wherein the water having a pH from about 8 to 10, and
- wherein at least some portion of the chlorite anions resulting from the reduction of chlorine dioxide reacts with residual activating free halogen to in-situ generate chlorine dioxide resulting in enhanced inactivation of microbiological organisms.
A system for implementing the cyclic process to an open recirculating system to achieve enhanced inactivation of microbiological organisms under alkaline pH conditions, the system comprising:
- flowing water through a conduit in fluid contact with a vessel containing a composition comprising a chlorinated isocyanurate and bromide salt to produce an aqueous solution having an effective amount of activating free halogen;
- adding to said aqueous solution an effective amount of chlorite anions to produce a chlorine dioxide solution;
- applying the chlorine dioxide solution to the water in an open recirculating system;
- the water having a pH from about 8 to 10;
- and
- wherein at least some portion of the chlorite anions resulting from the reduction of chlorine dioxide reacts with residual activating free halogen to in-situ generate chlorine dioxide resulting in enhanced inactivation of microbiological organisms.
A method for implementing the cyclic process to an open recirculating system to achieve enhanced inactivation of microbiological organisms under alkaline pH conditions, the method comprising:
- applying to the water of the open recirculating system an effective amount of activating free halogen and an effective amount of chlorite anions, the water having a pH from about 8 to 10;
- the activating free halogen and chlorite anions react to in-situ generate chlorine dioxide, and
- wherein at least a portion of the chlorite anions resulting from the reduction of chlorine dioxide reacts with residual activating free halogen to in-situ generate chlorine dioxide resulting in enhanced inactivation of microbiological organisms.
Dependencies are inferred from the claim text.