Abstract: The solid-liquid separating device 10 is capable of separating a concentrated liquid from a slurry by centrifugation and includes a centrifugation unit 12 having a rotating vessel 15 with a porous outer wall surface through which liquid is transmissible and a heater unit 18. Preferably, a portion of the slurry to be treated that is closest to a central axis of rotation of the centrifugation unit 12 is heated by the heater unit 18 during the centrifugation.

Abstract: A method and an apparatus for simply disposing medical waste from a medical institution on site. The method comprises crushing medical waste in a closed container, exhausting air out of the container, sterilizing the air before releasing it into the atmosphere, and filling the container with a high-pressure steam having a temperature between 110.degree. C. and 150.degree. C. to sterilize the crushed medical waste. The apparatus is equipped with a pressure container having at least one air-tight seal, an internal waste crushing mechanism such as blades, an internal supply of steam, a valve for exhausting air from the container, and an air sterilizer for the exhausted air.