Water treatment process
AssigneeOrica Australia Pty Ltd
InventorsHung Van Nguyen, Donald Bruce Bursill, James Young Morran, Mary Drikas, Veronica Laurel Pearce
Life of this patent
Estimating the term…
Abstract
The present invention relates to water treatment, in particular to a process for the removal of dissolved organic carbon from water. The process includes the following steps, adding an ion-exchange resin to water containing a contaminant such as dissolved organic carbon, dispersing the resin in the contaminated water to enable adsorption of the dissolved organic carbon onto the resin, and separating the resin loaded with contaminant from the water. In a preferred embodiment the process employs a magnetic ion-exchange resin.
Claims18
A process for production of potable water suitable for distribution and consumption from a raw water source containing humic and fulvic acids, said process comprising:
- a) adding a macroporous magnetic ion-exchange resin having cationic functional groups to water containing humic and fulvic acids while imparting sufficient shear on the water to disperse said resin in the water, thereby facilitating adsorption of the humic and fulvic acids onto said resin;
- b) transferring dispersion from step a) to a settling region, thereby causing resin in the transferred dispersion to agglomerate and settle;
- c) separating agglomerated resin containing humic and fulvic acids adsorbed thereon from the water;
- d) disinfecting water from which humic and fulvic acids are removed;
- e) regenerating a portion of said agglomerated resin using brine, with the remainder being returned back to step a), thereby allowing continuous production of potable water;
- f) returning regenerated agglomerated resin to step a).
A process for the removal of humic and fulvic acids from a raw water source, said process comprising:
- a) adding a macroporous magnetic ion-exchange resin having cationic functional groups to water containing humic and fulvic acids while imparting sufficient shear on the water to disperse said resin in the water, thereby facilitating adsorption of the humic and fulvic acids onto said resin;
- b) transferring dispersion to a settling region, thereby causing said resin to agglomerate and settle;
- c) separating the agglomerated resin containing humic and fulvic acids adsorbed thereon from the water;
- d) regenerating a portion of said agglomerated resin using brine;
- e) returning non-regenerated agglomerated resin to water containing humic and fulvic acids;
- f) returning regenerated agglomerated resin to water containing humic and fulvic acids.
Dependencies are inferred from the claim text.