초록 ▼

Waste ash is controlled and adjusted in its water content to result in a compacted permeability of about 10-5 cm/s or less. With particle size distribution adjustments, the compacted permeability can be made even lower. The impermeable structure is useful as a cover or cap for existing landfills to

Waste ash is controlled and adjusted in its water content to result in a compacted permeability of about 10-5 cm/s or less. With particle size distribution adjustments, the compacted permeability can be made even lower. The impermeable structure is useful as a cover or cap for existing landfills to prevent leaching as a liner in new sites. Processing the ash can result in a volumetric decrease of more than 40% thereby extending the useful life of new or existing landfills.

대표청구항 ▼

A process for reducing the permeability and increasing the density of compacted nonhazardous waste bottom ash having an adjustable water content, said process comprising: sizing said waste bottom ash to a particle distribution consisting essentially of bottom ash particles with the following particl

A process for reducing the permeability and increasing the density of compacted nonhazardous waste bottom ash having an adjustable water content, said process comprising: sizing said waste bottom ash to a particle distribution consisting essentially of bottom ash particles with the following particle size distribution about 6-18% smaller than 0.6 mm; about 25-37% smaller than 2 mm; about 62-67% finer than 6 mm; and about 85% or more finer than 10 mm; adjusting the water content of said ash to within a range of about 10 to about 25 wt % to achieve a permeability of about 10-5 cm/s or less upon compaction; and compacting said ash.