Resource recovery from disposal of solid waste and sewage sludge

Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow

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71 12, 210 42R, 210 63R, 210 67, 210 68, 210 73S, 423340, C02B 308

Patent

active

040100987

ABSTRACT:
The treatment of solid waste and sewage sludge with the recovery of natural resources comprising subjecting all or at least a portion of the sewage sludge to wet oxidation reaction to reduce the COD by an amount of at least 50% and preferably 50-85% and using the excess heat from the wet oxidation reaction to dry the solid waste and subjecting the combined solids from the wet oxidation reaction and the solid waste to pyrolysis under non-oxidizing conditions whereby the products from the pyrolysis reaction are readily separable into valuable constituents which are easily recovered.

REFERENCES:
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patent: 3342731 (1967-09-01), Baumann et al.
patent: 3549010 (1970-12-01), Marsh et al.
patent: 3549529 (1970-12-01), Wiseman
patent: 3652405 (1972-03-01), Hess et al.
patent: 3740331 (1973-06-01), Anderson et al.
patent: 3741890 (1973-06-01), Smith et al.
patent: 3770419 (1973-11-01), Brown et al.
patent: 3859933 (1975-01-01), Vonklenck
patent: 3870631 (1975-03-01), Fassell et al.

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