Inorganic contaminant removal from water
AssigneeOrica Australia Pty Ltd
InventorsMichael Francis Bourke, Hung Van Nguyen
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Abstract
A method is provided for removing an inorganic ionic species or organometallic ion contaminant, or combination contaminants, including such as arsenic, chromium, bromide, bromate, perchlorate, and/or others from water which contains an unacceptably high concentration of the contaminant(s). The method includes treating the water with an ion exchange resin, preferably a magnetic ion exchange resin such as MIEX® Resin, which is capable of adsorbing the inorganic ionic species contaminant(s), and regenerating and recycling the ion exchange resin back to the process. The method produces potable water from ground water containing such contaminants and eliminates breakthrough and chromatographic peaking problems observed with conventional ion exchange systems.
Claims43
A method for removing a contaminant selected from the group consisting of inorganic ionic species and organometallic ions from water containing an unacceptably high concentration of said contaminant, said method comprising:
- dispersing an ion exchange resin capable of adsorbing said inorganic ionic species or organometallic ion contaminant in the water;
- separating a portion of the ion exchange resin loaded with said inorganic ionic species or organometallic ion contaminant for regeneration and adding to the water replacement ion exchange resin in amounts sufficient to remove said inorganic ionic species or organometallic ion contaminants in said water down to an acceptable concentration.
A method for removing an inorganic ionic species contaminant from water containing an unacceptably high concentration of said contaminant, said method comprising:
- dispersing an ion exchange resin capable of adsorbing said inorganic ionic species contaminant in water in a process container;
- subsequently removing said ion exchange resin from said process container;
- regenerating a portion of said removed ion exchange resin and returning it to said process container;
- and
- recycling at least a portion of said ion exchange resin which is unregenerated to said process;
- wherein said regenerated and unregenerated ion exchange resin is added to said process container in amounts sufficient to remove said inorganic ionic species contaminants in said water down to acceptable concentrations.
A method for removing an inorganic ionic species contaminant from water containing an unacceptably high concentration of said contaminant, said method comprising:
- dispersing an ion exchange resin capable of adsorbing said inorganic ionic species contaminant in water in a process container;
- removing ion exchange resin loaded with said inorganic ionic species contaminant from said process container and adding replacement ion exchange resin to said process container;
- determining the level of said inorganic ionic species contaminant remaining in said water;
- and
- repeating the foregoing method steps if necessary until the level of said inorganic ionic species contaminant remaining in said water has reached an acceptable level.
Dependencies are inferred from the claim text.