Chemistry: electrical and wave energy – Processes and products – Electrophoresis or electro-osmosis processes and electrolyte...
Patent
1996-12-20
1998-06-09
Phasge, Arun S.
Chemistry: electrical and wave energy
Processes and products
Electrophoresis or electro-osmosis processes and electrolyte...
204529, 204533, 204536, 204632, 204647, B01D 6148
Patent
active
057627746
ABSTRACT:
A method of manufacturing an apparatus for the electrodeionization of a fluid includes determining the flow rate of the fluid to be deionized, its initial concentration of ionic impurities, a desired post-processing concentration of ionic impurities and appropriately selecting the number of diluting compartments for use in the apparatus and the electrical current to be applied between the anode and cathode in the apparatus and manufacturing the apparatus accordingly. A method of operating an apparatus for electrodeionization of a fluid includes monitoring the concentration of ionic impurities of the fluid to be deionized, monitoring the concentration of ionic impurities of the fluid which has been processed by the apparatus, determining the flow rate of the fluid to be deionized and altering the electrical current applied between the anode and cathode to maintain a predefined relationship between the drop in the concentration of ionic impurities of the fluid through the apparatus and the electrical current and the flow rate within a selected range of values. A novel electrodeionization apparatus includes an electrodeionization core, means for determining the concentration of the ionic impurities of fluid to be processed within the apparatus, a means for determining the concentration of the ionic impurities conductivity of fluid which has been processed within the apparatus, a measuring device to determine the flow rate of fluid processed by the apparatus, a current sensing device to measure the electrical current applied to the anode and cathode and a control device to process these values and to alter the electrical current applied to the anode and cathode of the apparatus to maintain a predefined ratio between the measured values within a selected range of values.
REFERENCES:
patent: 4956071 (1990-09-01), Giuffrida et al.
patent: 5066375 (1991-11-01), Parsi et al.
patent: 5292422 (1994-03-01), Liang et al.
Glegg Water Conditioning, Inc.
Phasge Arun S,.
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