Municipal Solid Waste Defined in 40 CFR Part 258.2 Regulated by 40 CFR Part 258: RCRA Subtitle D.
-
Upload
benjamin-rowe -
Category
Documents
-
view
213 -
download
0
Transcript of Municipal Solid Waste Defined in 40 CFR Part 258.2 Regulated by 40 CFR Part 258: RCRA Subtitle D.
Municipal Solid Waste
• Defined in 40 CFR Part 258.2
• Regulated by 40 CFR Part 258:
RCRA Subtitle D
Landfill DiagramSolid Waste
Liner
Compacted Clay Liner HDPE Liner
Liner
Purposes• To prevent leachate from seeping into
groundwater• To prevent landfill gas from migrating out
of the landfill below grade
Liner
Purposes• To prevent leachate from seeping into
groundwater• To prevent landfill gas from migrating out of
the landfill below grade
Typical Materials• 3-foot layer of compacted soil, underlying• 60-mil high density polyethylene (HDPE)
Leachate Drainage Blanket and Collection System
LeachateDrainage Blanket Collection
Pipes
Leachate Drainage Blanket and Collection System
Purposes• To enhance the effectiveness of the liner by
minimizing leachate head• To protect the liner from puncture
Leachate Drainage Blanket and Collection System
Purposes• To enhance the effectiveness of the liner by
minimizing leachate head• To protect the liner from puncture
Typical Materials• Blanket: 1 foot of sand or gravel, underlying• Collection System: HDPE or PVC piping
Final Cover System
Protective Layer
Vegetation
Low Permeability Layer
FML Liner
Final Cover System
Composed of:
• Low Permeability Layer
• Protective Layer
Low Permeability Layer of Final Cover SystemPurposes• To minimize leachate production by
shedding
precipitation rather than allowing it to
percolate through waste
Low Permeability Layer of Final Cover SystemPurposes• To minimize leachate production by
shedding precipitation rather than allowing it to percolate through waste
• To prevent leachate popouts
Low Permeability Layer of Final Cover SystemPurposes• To minimize leachate production by shedding
precipitation rather than allowing it to
percolate through waste• To prevent leachate popouts• To provide a barrier (along with the protective
layer) between the waste and receptors
Low Permeability Layer of Final Cover System
Purposes• To minimize leachate production by shedding
precipitation rather than allowing it to percolate through waste
• To prevent leachate popouts• To provide a barrier (along with the protective
layer) between the waste and receptors• To prevent uncontrolled emission of landfill
gas into atmosphere through top of landfill
Low Permeability Layer of Final Cover System
Typical Materials• Compacted soil and• 30 or 40-mil polyethylene or PVC flexible
membrane liner (FML)
Protective Layer of Final Cover SystemPurposes• To protect the low permeability layer from
freeze/thaw, desiccation cracking, root penetration and puncture
• To provide a durable, low maintenance surface
Protective Layer of Final Cover System
Typical Materials• Uncompacted soil with• Grass on surface
Gas Monitoring SystemPurposes• To characterize gas production within the
landfill• To detect any methane moving out of the
landfill either below grade or through the final cover system
Groundwater Monitoring System
GroundwaterMonitoring Well
Groundwater Monitoring System
Purpose• To detect any groundwater contamination
caused by the landfill
Surface Water Control System
Purposes• To enhance the effectiveness of the final
cover system in shedding precipitation, and • To prevent surface water contamination
Landfill Operation• Dry Entombment
Attempt to prevent introduction of water or air to the landfill – Minimal degradation.
Landfill Operation
• Dry EntombmentAttempt to prevent introduction of water or air to the landfill – Minimal degradation.
• BioreactorAny liquid (other than leachate) is added in a controlled fashion into the waste to accelerate or enhance the anaerobic (without oxygen) biodegradation of the waste.
Gas Production Graph