초록 ▼

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 mai

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.

대표청구항 ▼

[ I claim:] [1.] A continuous flow sludge pasteurization system, comprising:a liquid flow system including a reservoir having an inlet and an outlet and means for establishing and maintaining a continuous flow of a liquid slurry into said inlet and from said outlet;a heat exchanger at said inlet for

[ I claim:] [1.] A continuous flow sludge pasteurization system, comprising:a liquid flow system including a reservoir having an inlet and an outlet and means for establishing and maintaining a continuous flow of a liquid slurry into said inlet and from said outlet;a heat exchanger at said inlet for introducing heat into said slurry;a source of heat for introducing heat into said heat exchanger for heating said continuous flow of slurry to a predetermined minimum temperature;a rotating propeller positioned between said inlet and said outlet for acting against the continuous flow of slurry toward said outlet for maintaining said slurry in said liquid flow system at said predetermined temperature for a minimum period of about thirty minutes sufficient to kill all pathogens in said slurry; anddewatering means after said outlet for removing water from said slurry.