Continuous flow pasteurization of sewage sludge

Details Continuous flow pasteurization of sewage sludge Continuous flow pasteurization of sewage sludge

1997-01-29

1999-03-30

Thornton, Krisanne

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

Using fluent heat transfer medium other than air

165901, 165902, 210175, 210179, 210180, 422 1, 422307, 422308, A61L 200

Patent

active

058884530

ABSTRACT:
A continuous flow sludge pasteurization system including a heat exchanger, a source of heat for introducing into the heat exchanger, an inlet for introducing a liquid slurry of sludge into the heat exchanger for heating the sludge to a predetermined minimum temperature, a circulating circuit for maintaining the slurry in circulation at the predetermined temperature for a minimum period of about thirty minutes, sufficient to kill all pathogens in the slurry prior to dewatering, and a dewatering unit for removing water from the sludge.

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