A mobile self-contained apparatus and process for
grinding,
grating, macerating, chemically disinfecting, and
drying infectious
waste material. A trailer (10) contains a hopper (27), a grinder / grater (28), an enclosed
conveyor system,
drying and filter apparatus, and sources of power, chemical
disinfectant, and
fresh water. Bagged infectious
waste material in a
cart is lifted and dumped into the hopper, sprayed with a
sodium hypochlorite disinfectant solution, fed to the grinder / grater, ground, grated, and macerated into
small particles of confetti-like material, sprayed again, immersed in the
disinfectant solution, conveyed by an upwardly inclined
screw conveyor (34) and thoroughly mixed therein, dried, passed into a vertical
screw conveyor (47), and passed to a
discharge screw conveyor (50) which discharges the dry confetti-like material. The enclosed
system operates under negative pressure produced by a suction fan that draws the air within the
system through a
HEPA filter to remove chemical fumes, airborne dust, odors and
bacteria.