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US 2001/0044566 A1Published application
Method for biosolid disposal and methane generation
AssigneesTerralog Technologies USA, Inc., Terralog Technologies Inc.
InventorsMichael S. Bruno, Maurice B. Dusseault, Roman Bilak
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Abstract
A method for the disposal of biosolids, such as municipal sewage waste, comprising injecting the biosolids into a subsurface injection formation. The method can include recovering methane generated from the degradation of the biosolids.
Claims45
A method for the disposal of biosolids, the method comprising:
- a) providing a supply of biosolids;
- b) creating a slurry of the biosolids suitable for injecting;
- c) selecting an injection formation below a ground surface;
- d) injecting the biosolids slurry into the injection formation at a pressure sufficient to create and maintain fractures within the selected injection formation;
- and
- e) allowing degradation of the injected biosolids slurry.
3 more elements
A method for the disposal of biosolids, the method comprising:
- a) providing a supply of biosolids;
- b) creating a slurry of the biosolids suitable for injecting;
- c) selecting an injection formation that is separated from a ground surface by one or more pairs of alternating layers of high permeability and low permeability;
- d) injecting the biosolids slurry into the injection formation;
- e) allowing the injected biosolids slurry to degrade;
- and
- f) monitoring pressure in the one or more than one of the alternating layers of high permeability and low permeability above the injection formation during a time selected from the group consisting of before biosolids injection, during biosolids injection, after biosolids injection and a combination of before biosolids injection, during biosolids injection and after biosolids injection.
4 more elements
Dependencies are inferred from the claim text.