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LANDFILL AND LANDFILL DESIGN, NORHAYATI BINTI AB RAHMAN_ 2017632114…
LANDFILL AND LANDFILL DESIGN
WASTE LAND DISPOSAL
:wastebasket:
ATTENUATE AND DISPERSE SIT (DUMPING SITE)
Traditional form of landfilling :
Attenuation mechanism : dilution and dispersion through pores and micro fissures into underlying saturated zones.
Impossible to monitor or track the leachate pollutants
CONTAINMENT SITES (LANDFILL)
Waste, leachate and gas isolated from surrounding environment
The containment is achieved either natural clay bottom liners or synthetic liners or combination of both- expected to be 'leak free'.
Facilities for leachate and gas collection and removal are installed and regular monitoring is possible
TYPE OF LANDFILL
LANDFILL FOR SHREDDED SOLID WASTE
Placed at up to 35% greater density and some without daily cover since blowing waste, odors, flies and rates not significant problems
Less soil cover used
Compacted lighter and more uniform surface
Disadvantages
Need shredding facilities, special section for hard to shred wastes
Potential applications in areas where landfill capcity is expensive, cover material not readily available and low precipitation
Shredded waste used to produce compost used as intermediate cover material
LANDFILL FOR INDIVIDUAL WASTE CONSTITUENTS
Combustion ash and asbestos identified as designated waste
To isolate from material placed in MSW LF
Combustion as monofill may have odor problem due to reduction of sulfate
Gas recovery system is recommended
LF FOR COMMINGLED WASTE
Limited amount of non-hazardous waste and sludge from water and wastewater treatment plants
Native soil used as intermediate and final cover material
if not available compost, foam, old rugs and carpeeting, dredging spoil, and demolition wastes can be used
Reuse abandoned landfill to recover materials and using decomposed residue as daily cover for additional LF capacity
OTHER TYPES LANDFILL
Design to maximize gas production
LF as integrated treatment units
DEFINITION
:question:
Method of disposing solid waste on land without creating nuisance or hazard to public health or safety
Utilizing engineering principles to confine wastes smaller practical volume and cover it with a layer of earth at the conclusion of each day's operation or at such more frequent intervals as may be necessary.
TERMS IN LANDFILL
:!!:
CELL
DAILY COVER
LIFT
BARNCH (TREEACE)
FINAL LIFT
FINAL COVER LAYER
LEACHATE
LANDFILL GAS
LANDFILL LINER
LANDFILL CONTROL FACILITIES
ENVIRONMENTALMONITORING
LANDFILL CLOSURE
POSTCLOSURE: Activities associate with long term monitoring and maintanance of complete landfill (30-50 years)
LANDFILL PROCESS
NORHAYATI BINTI AB RAHMAN_ 2017632114_EH2208L
