Agglomerating waste sludge and yard waste

Details Agglomerating waste sludge and yard waste Agglomerating waste sludge and yard waste

1994-02-01

1996-07-16

Bennet, Henry A.

Drying and gas or vapor contact with solids

Process

With treated material recirculation

34379, F26B 700

Patent

active

055355285

ABSTRACT:
A process and apparatus which mixes yard waste and municipal waste sludge to form fuel, fertilizer, or animal feed supplement. The yard waste and sludge are thoroughly mixed in a mixer and fed into a thermal dryer. A portion of the dried material is then fed back to the mixer to raise the solids content of the mixture entering the dryer and control the solids content of the mixture exiting the dryer. It is preferable to reduce the particle size of the yard waste to shreds or to the consistency of a meal before mixing with the sludge. Yard waste considered usable in this invention is grass, leaves, wood from pallets, and waste grains.

REFERENCES:
patent: 2438450 (1948-03-01), Nelson
patent: 4599954 (1986-07-01), Williams
patent: 4829678 (1989-05-01), Glorioso
patent: 4886000 (1989-12-01), Holter et al.
patent: 4938155 (1990-07-01), Williams
patent: 4989344 (1991-02-01), Glorioso
patent: 5069801 (1991-12-01), Girovich
patent: 5215670 (1993-06-01), Girovich
patent: 5271162 (1993-12-01), Kunz et al.

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