Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1985-05-20
1987-08-18
Demers, Arthur P.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
2041823, 2041824, 204301, B01D 1302
Patent
active
046875611
ABSTRACT:
Process and apparatus are provided for demineralizing aqueous solutions without using regenerating chemicals. Oppositely charged ions are electrolytically generated within electrode chambers and diffused into the stream of aqueous solution to be demineralized flowing in cross-current thereto. In their migration in response to the application of an electric potential, the ion streams are subjected to displacement steps in cation and anion exchange masses separated by selectively permeable ion exchange membranes. The aqueous solution alternately passes through the cation and anion exchange masses resulting in a demineralized aqueous stream and an enriched brine stream.
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