Method for Making Reverse Osmosis Permeate Water and Mineral Water From Deep Seawater
OwnerNai-Jen Huang, Chih-Cheng Lin +1inventors
InventorsNai-Jen Huang, Chih-Cheng Lin, Chih-Shan Lin
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Abstract
A method for making reverse osmosis permeate water and mineral water from deep seawater includes the steps of: a) sand-filtering or ultra-filtering the deep seawater; b) conducting a first nano-filtering step to nano-filter the deep seawater after the step a) to obtain first nano-filtration permeate water and first nano-filtration concentrated water; c) filtering the first nano-filtration permeate water using a reverse osmosis apparatus to obtain reverse osmosis permeate water and reverse osmosis concentrated water; and d) treating the first nano-filtration concentrated water by electrodialysis to obtain anion-rich water, cation-rich water, and mineral water.
Claims15
A method for making reverse osmosis permeate water and mineral water from deep seawater, comprising the steps of:
- a) filtering the deep seawater using one of sand-filtering and ultra-filtering;
- b) conducting a first nano-filtering step to nano-filter the deep seawater after the step a) to obtain first nano-filtration permeate water and first nano-filtration concentrated water;
- c) filtering the first nano-filtration permeate water using a reverse osmosis apparatus to obtain reverse osmosis permeate water and reverse osmosis concentrated water;
- and
- d) treating the first nano-filtration concentrated water by electrodialysis to obtain anion-rich water, cation-rich water, and mineral water.
Dependencies are inferred from the claim text.