C - Chemistry – Metallurgy – 05 – F
Patent
C - Chemistry, Metallurgy
05
F
362/2, 71/56
C05F 9/04 (2006.01) C05F 7/00 (2006.01) C05F 17/00 (2006.01) C05F 17/02 (2006.01)
Patent
CA 1076720
A B S T R A C T An improvement in the treatment and purification of waste materials or refuse/sewage sludge mixtures by composting and also by thermal retting, whereby the waste material is crushed and the non-compostable constituents are extracted by sifting of the reduced waste. The material, ready-treated for composting and of a predetermined particle size, is heaped layer upon layer to form a stack. In the interior of the stack, longitudinal tunnel-like hollow courses are provided at floor level, possibly with further channel-like passages above. Spaced vertical flue-like vents 5 are provided at various points and the hollow courses and channel-like passages are open at least at one extremity. The stacked material is left undisturbed until the compost has matured.
260565
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