Multi-stage infectious waste treatment system

Details Multi-stage infectious waste treatment system Multi-stage infectious waste treatment system

A - Human Necessities

61

L

A61L 11/00 (2006.01) B09B 3/00 (2006.01)

Patent

CA 2140512

ABSTRACT A multi-stage treatment system for infectious waste includes a shredding stage, a granulating stage, a wetting stage, a disinfecting stage, and a dewatering stage which define a continuous treatment flowpath for the infectious waste. A plurality of blades shred and then granulate the waste in the shredding and granulating stages while simultaneously mixing the waste with disinfectant chemicals. The granulating stage insures that the waste is granulated to a sufficiently small size to facilitate the use of a relatively low concentration of a highly reactive disinfectant. Chemicals are mixed to form a volatile, highly reactive disinfectant which is then immediately injected into the waste stream. A plurality of jets wet the waste mixture in the wetting stage with the heated aqueous disinfectant. A flow restriction removes excess aqueous liquid from the disinfected waste in the dewatering stage and renders the product suitable for landfilling.

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