Agriculture Reference
In-Depth Information
Figure 3.13 Leachate collection
system for a hazardous waste
landfill.
From D. Vallero, Engineering the Risks
of Hazardous Wastes ,
Butterworth-Heinemann, Woburn, MA.
Leachate “pump and treat”
55-gallon drum
placement
with surrounding
“kitty litter”
Clay liner
Flexible membrane liner (FML)
to promote the flow of liquid within the landfill from all points in the landfill
to a central collection point where the liquid can be pumped to the surface for
subsequent monitoring and treatment. Crushed stone and perforated pipes are
used to channel the liquid along the top layer of this compacted clay liner to the
pumping locations.
Thus, directly treating hazardous wastes physically and chemically, as with
thermal systems, and controlling air pollutants indirectly, as when gases are released
Air with vaporized
contaminants
Off-gas
treatment
Treated off-gas
Groundwater to
be treated
Drip system
Packing
Clean air
Treated water
Figure 3.14 Air stripping
system to treat volatile
compounds in water.
Compressor
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