Apparatus for treating sewage

Chemistry: electrical and wave energy – Apparatus – Electrolytic


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204149, 204152, 204276, C02C 512




There is provided a method and apparatus for treating sewage, by first comminuting raw sewage in a comminuting compartment to provide a slurry and then digesting the raw, comminuted sewage by oxygen-dependent bacteria in a roofed compartment. Oxygen is supplied by electrolysis of the water in the sewage, utilizing spaced anode and cathode. The anode is located in the roofed digestion compartment, and the oxygen generated at the anode is used by the bacteria; the cathode is located in a chimney which extends through the roof or top of the plant, to atmosphere, and the hydrogen generated at the cathode is discharged to atmosphere through this chimney. A stirrer is provided in the digestion compartment to stir trapped oxygen back into the mass of sludge. A trapping or sedimentation compartment is provided after the digestion compartment, for settling out indigestible solids, and drawing off the remaining liquid.

patent: 591730 (1897-10-01), Bein
patent: 1543357 (1925-06-01), Baur
patent: 3045665 (1962-07-01), Moyat
patent: 3082160 (1963-03-01), Sabins
patent: 3109787 (1963-11-01), Price et al.
patent: 3684703 (1972-08-01), Marmo
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patent: 3914164 (1975-10-01), Clark
patent: 3917521 (1975-11-01), Clarke et al.
patent: 3943044 (1976-03-01), Fenn et al.
patent: 3972794 (1976-08-01), Lamm


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