Two-stage sludge drying apparatus and method

Details Two-stage sludge drying apparatus and method Two-stage sludge drying apparatus and method

1993-08-02

1994-11-22

Bennet, Henry A.

Drying and gas or vapor contact with solids

Process

Diverse types of drying operations

34223, F26B 1900

Patent

active

053656768

ABSTRACT:
A system for drying municipal sludge to reduce its moisture content and harmful pathogens to a level suitable for direct land application includes a cellular conveyor belt defining pockets which are filled with moist sludge and which is carried through multiple runs in a drying chamber over heat conducting supporting pans in a manner causing inversion of the sludge filled belt for at least one of the runs. Heated drying air is supplied directly to the sludge from above along each run and indirectly by conduction to the sludge from the supporting pans below along each run to provide uniform and rapid drying with maximum efficiency.

REFERENCES:
patent: 4827853 (1989-05-01), Emery

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