delaware’s venture into modern - us epapresentation by n.c. vasuki, p.e., dee, ceo, delaware solid...
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Delaware’s venture into modern landfills.
Delaware’s venture into modern landfills.
N. C. Vasuki, P.E., DEECEO, Delaware Solid Waste Authority
www.dswa.com
N. C. Vasuki, P.E., DEECEO, Delaware Solid Waste Authority
www.dswa.com
IntroductionIntroduction■ Landfills provide the foundation for the State’s
solid waste management program■ In 1980 the first geomembrane (30 mil pvc) lined
landfill cell (9 acres) was constructed■ In 1982, a second cell (18 acres) was added.■ Leachate treatment became an issue.■ Dr. Fred Pohland’s research at Georgia Tech
appeared to provide a solution for our problem.■ Attempts were made to introduce leachate into
both cells.
■ Landfills provide the foundation for the State’s solid waste management program
■ In 1980 the first geomembrane (30 mil pvc) lined landfill cell (9 acres) was constructed
■ In 1982, a second cell (18 acres) was added.■ Leachate treatment became an issue.■ Dr. Fred Pohland’s research at Georgia Tech
appeared to provide a solution for our problem.■ Attempts were made to introduce leachate into
both cells.
Leachate recirculationLeachate recirculation■ Absence of prescriptive regulations allowed us
to experiment with various methods.■ Vertical recharge wells (perforated concrete
manhole sections) appeared to work.■ More wells were added and leachate export for
external treatment was reduced.■ Gas production also increased. Based on the
experience gained, we started improving our design.
■ Absence of prescriptive regulations allowed us to experiment with various methods.
■ Vertical recharge wells (perforated concrete manhole sections) appeared to work.
■ More wells were added and leachate export for external treatment was reduced.
■ Gas production also increased. Based on the experience gained, we started improving our design.
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Property Boundary
Shallow Pleistocene
Pleistocene
Frederica Aquifer
Cheswold Aquifer
Gas Migration Monitoring Well
Water Supply Well
Irrigation Well
Surfacewater Sampling Point
Single Leachate Sampling Point
Duel Primary Leachate/Secondary
Detection Liquid Monitoring Point
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LEGEND
Fig. 4: Sandtown Landfill - Locations of Groundwater, Leachate, and Surfacewater Monitoring Points
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Area A-B
Area E
Area C-D
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