Abstract: Washing and disintegrating means serve to wash and disintegrate the waste material and to continuously deliver the resulting washed and disintegrated material. A first conveyor serves to receive said washed and disintegrated material from said washing and disintegrating means and to remove water from said washing and disintegrating means and to remove water from said material. A dirt separator serves to receive said washed and disintegrated material from said first conveyor and to remove dirt from said washed and disintegrated material and to deliver the resulting cleaned material. A second conveyor serves to receive said cleaned material from said dirt separator and to remove water from said cleaned material. A water collector serves to receive water removed by said second conveyor. A return conduit serves to deliver water from said water collector to said dirt separator.

Abstract: An upright container having an open top end contains a rotor disc, which is mounted for rotation on a vertical axis and spaced below said open top end and has a periphery which extends close to the inside surface of said container. A plurality of cutting teeth are mounted on said disc and disposed at its periphery. At least two radial ribs are mounted on the top of said disc.