| CPC C02F 9/00 (2013.01) [C02F 1/42 (2013.01); C02F 5/02 (2013.01); C02F 2001/422 (2013.01); C02F 2001/425 (2013.01); C02F 1/441 (2013.01); C02F 2209/06 (2013.01)] | 20 Claims |
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1. A system for rejuvenating wash water, comprising:
a wash water reservoir comprising wash water; and
an anion reduction subsystem in fluid communication with the wash water reservoir and a replacement water source, the anionic reduction subsystem comprising:
at least one anionic bed, each comprising an anion exchange resin; and
at least one vessel, each vessel of the at least one vessel having an interior in fluid communication with at least one fluid source and at least one fluid drain, each vessel of the at least one vessel further comprising:
an active state of the vessel comprising a first fluid flowing from one fluid source of the at least one fluid source to the interior of the vessel to flow through one anionic bed of the at least one anionic bed within the interior of the vessel while a second fluid flows from the interior of the vessel to one fluid drain of the at least one fluid drain, the first fluid and second fluid flowing at a flow rate greater than zero; and
an inactive state of the vessel wherein the flow of the first and second fluids has ceased;
wherein each vessel of the at least one vessel is configured to perform at least one operation, each operation of the at least one operation comprising:
a first transition of the vessel from the inactive state to the active state, the first transition occurring when the anionic bed positioned within the interior of the vessel has a first anionic composition trapped inside the anion exchange resin of the anionic bed; and
a second transition of the vessel from the active state to the inactive state, the second transition occurring when a breakthrough condition has been reached for the anionic bed positioned within the interior of the vessel at the first transition after exchanging anions with the first fluid resulting in the anionic bed having a second anionic composition trapped inside the anion exchange resin of the anionic bed;
wherein the second anionic composition has a ratio of anions that is substantially equal to the ratio of anions of the first fluid;
wherein the anion reduction subsystem is configured to perform a plurality of operations comprising:
a conditioning operation performed in one vessel of the at least one vessel, wherein the first fluid is a bicarbonate solution, the fluid source is a bicarbonate solution reservoir, the second fluid is a waste solution comprising impurity anions, and the fluid drain is a waste tank;
an upgrading operation performed in one vessel of the at least one vessel, wherein the first fluid is wash water, the fluid source is the wash water reservoir, the second fluid is an upgraded wash water having a lower concentration of impurity anions than the first fluid, and the fluid drain is the wash water reservoir; and
a cleaning operation performed in one vessel of the at least one vessel, wherein the first fluid is input water, the fluid source is the replacement water source, the second fluid is a cleansed input water having a lower concentration of impurity anions than the first fluid, and the fluid drain is the wash water reservoir;
wherein the second anionic composition of the conditioning operation is the first anionic composition of the upgrading operation, the second anionic composition of the upgrading operation is the first anionic composition of the cleaning operation, and the second anionic composition of the cleaning operation is the first anionic composition of the conditioning operation;
wherein the anion reduction subsystem is further configured to operate cyclically, with a cycle comprising a conditioning operation, a cleaning operation, and an upgrading operation.
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