C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
182/3
C02F 1/50 (2006.01)
Patent
CA 1036948
ABSTRACT OF THE DISCLOSURE In a waste disposal system wherein the suspended solids containing organic materials are separated from the liquid carrier and thereby form a sludge having a relatively low moisture content, the improvement comprising the steps of drying the sludge to a moisture content below about 15%, the sludge drying step including final drying partially dried sludge by thermal means, passing the dried sludge to a fluidized bed for thermal treatment in a steam and low oxygen content fluidizing gas to form fine sorbent materials, separately heating a granular solid material, passing the hot granu- lar material to the fluidized bed to provide the heat for thermally treating the dried sludge, removing the fine sorbent materials from the fluidized bed entrained in the fludizing gases, passing the sorbent materials to the waste disposal system to remove solution contaminants from the liquid effluent in the system, and passing the separated gases from the fluidized bed to a combustion zone use in heating the granular solid material.
213992
Foster Edward P.
Lapple Walter C.
Poole Edward M.
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