Processes and apparatus for treating sewage or like sludge
AssigneeR3 Management Limited
InventorsRobin Millard, Frederick H. Kurtz
Life of this patent
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Abstract
There is disclosed a process for treating sewage or similar organic sludge to produce a pasteurized and dried product comprising the steps of: dividing the sludge into at least one first portion and at least one second portion; drying the first portion so that the first portion has a higher dry solids content than that of the second portion; mixing the fist portion and the second portion to produce a mixture having a dry solids content which is intermediate between that of the first and second portions; adding an alkaline admixture to the mixture in order to pasteurize the mixture and thereby produce the product without employing subsequent drying by aeration.
Claims27
A process for treating sewage or similar organic sludge to produce a pasteurised and dried product comprising the steps of:
- dividing the sludge into at least one first portion and at least one second portion;
- drying the first portion so that the first portion has a higher dry solids content than that of the second portion;
- mixing the first portion and the second portion to produce a mixture having a dry solids content which is intermediate between that of the first and second portions;
- adding an alkaline admixture to the mixture in order to pasteurise the mixture and thereby produce the product without employing subsequent drying by aeration.
Dependencies are inferred from the claim text.