Method for composting solid waste

Details Method for composting solid waste Method for composting solid waste

1994-08-22

1996-12-17

Lander, Ferris

Chemistry: fertilizers

Processes and products

Bacterial

71 10, 4352903, C05F 902, C05F 904

Patent

active

055849040

ABSTRACT:
A process for reducing solid waste includes the steps of (1) preparing the waste for shredding; (2) shredding the waste; (3) preparing the waste for anaerobic decomposition; (4) decomposing the waste anaerobically; (5) preparing the waste for aerobic decomposition; (6) decomposing the waste aerobically; (7) separating the inorganic waste from the organic waste; (8) reducing the plastic with solvents; and (9) reducing the metal with acids. The apparatus used in carrying out the above steps comprise a cylindrical container having front and rear end caps, seal bearings and support plates with central openings for waste to flow through is driven by a motor and directional vanes inside the container provide mixing and steer the waste. Fluid and gas are made to flow through a front support plate and seal bearing as the container rotates. Directional vanes rotationally journaled in the wall of the cylindrical container regulate the flow of waste through the chamber.

REFERENCES:
patent: 3847803 (1974-11-01), Fisk
patent: 4204842 (1980-05-01), Morel et al.
patent: 4252901 (1981-02-01), Fischer et al.
patent: 4372856 (1983-02-01), Morrison
patent: 4511370 (1985-04-01), Hunziker et al.
patent: 4514297 (1985-04-01), Enqvist
patent: 4565552 (1986-01-01), Cotton
patent: 4758344 (1988-07-01), Wildenauer
patent: 4780415 (1988-10-01), Ducellier et al.
patent: 5049486 (1991-09-01), Blackwood et al.

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