Systems and methods for processing mixed solid waste
First Claim
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1. A method for processing mixed solid waste, comprising:
- providing a mixed waste stream comprising at least 10 wt % wet organic waste and at least 10 wt % dry organic waste that is comingled;
separating the wet organic waste from the dry organic waste to produce an intermediate wet organic stream and an intermediate dry organic stream, wherein the separation includes,fractionating the mixed waste stream by size by performing an upper size cut and a lower size cut to produce a sized waste stream, the sized waste stream having a size range where the ratio of an upper cut-off to a lower cut-off is less than 8; and
fractionating the sized waste stream by density;
converting at least a portion of the intermediate wet organic stream to one or more renewable products using at least a first conversion technique; and
converting the intermediate dry organic stream to one or more renewable products using at least a second conversion technique, wherein the second conversion technique is different than the first conversion technique.
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Abstract
Solid waste that includes a mixture of wet organic material and dry organic material can be are separated using mechanical separation to produce a wet organic stream enriched in wet organics and a dry organic stream enriched in dry organics. The separated wet organic stream and dry organic stream are separately converted to renewable or recyclable products using different conversion techniques particularly suited for the separated wet and dry organic streams.
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Citations
23 Claims
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1. A method for processing mixed solid waste, comprising:
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providing a mixed waste stream comprising at least 10 wt % wet organic waste and at least 10 wt % dry organic waste that is comingled; separating the wet organic waste from the dry organic waste to produce an intermediate wet organic stream and an intermediate dry organic stream, wherein the separation includes, fractionating the mixed waste stream by size by performing an upper size cut and a lower size cut to produce a sized waste stream, the sized waste stream having a size range where the ratio of an upper cut-off to a lower cut-off is less than 8; and fractionating the sized waste stream by density; converting at least a portion of the intermediate wet organic stream to one or more renewable products using at least a first conversion technique; and converting the intermediate dry organic stream to one or more renewable products using at least a second conversion technique, wherein the second conversion technique is different than the first conversion technique. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification