Chemistry: electrical and wave energy – Apparatus – Coating – forming or etching by sputtering
Patent
1976-08-10
1977-08-30
Prescott, Arthur C.
Chemistry: electrical and wave energy
Apparatus
Coating, forming or etching by sputtering
204130, 204149, 204180R, 204272, 204302, B03C 500, C02C 512
Patent
active
040453260
ABSTRACT:
A liquid containing suspended solids is first passed through an electrostatic treater, having no current flow across its electrodes, to initiate nucleation and coagulation of the particles. Thereafter, it passes through an electrolytic treater wherein current may flow between the electrodes to further encourage coagulation to such an extent that flocculation begins. The residual effects of the electrostatic treater prevent plating out on the electrodes of the electrolytic treater such that electrolysis can occur without sacrificing an electrode, and the electrodes are so arranged that the liquid passes sequentially through groups of concentrated lines of force whose repetitious, powerful action further encourages flocculation. From the electrolytic treater, the liquid with its flocculated material is delivered into a clarifying basin so designed that the floc will settle out and be removed from the basin with a minimum of manipulation because of the tendency of such material to immediately dissipate and disperse when handled while still in the liquid.
REFERENCES:
patent: 2542054 (1951-02-01), Penney et al.
patent: 3468778 (1969-09-01), Hirs et al.
patent: 3795605 (1974-03-01), Candor
patent: 3843507 (1974-10-01), Kwan
patent: 3975257 (1976-08-01), Hulse
patent: 4001102 (1977-01-01), Batha et al.
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