Apparatus and method for continuous electrodeionization
AssigneeChemitreat PTE LTD
InventorsDey Avijit, Thomas Gareth Hugh
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Abstract
A method of water purification including the steps of passing source water through at least one reverse osmosis unit to produce a product water and reject water, directing the product water from a reverse osmosis unit into the dilution stream of a continuous electrodeionization unit, directing the reject water from the first pass reverse osmosis unit through a softening unit to produce softening unit output water with fewer hardness elements than the reject water from the first pass reverse osmosis unit, directing the softening unit output water into a concentrate stream of the continuous electrodeionization unit, and wherein the continuous electrodeionization unit further purifies the water from the dilution stream to produce purified water.
Claims60
A method of water purification including the steps of:
- directing source water through at least one reverse osmosis unit to produce product water and reject water,
- directing the product water from a reverse osmosis unit into the dilution stream of a continuous electrodeionization unit,
- directing the reject water from the first pass reverse osmosis unit through a softening unit to produce softening unit output water with fewer hardness elements than the reject water from the first pass reverse osmosis unit,
- directing the softening unit output water into concentrate and electrode streams of the continuous electrodeionization unit, and
- wherein the continuous electrodeionization unit further purifies the water from the dilution stream to produce purified water.
Dependencies are inferred from the claim text.