nrrl bioreactor construction update week of february 11 · 2-inch pvc injection wells. temporary...
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Introduction
NRRL Bioreactor Construction UpdateWeek of February 11
(photos taken 02/13/02)
Update Summary
NRRL Bioreactor Construction• Construction progress meeting held on
February 13. • Work continued on the placement of the
exposed geomembrane cap (EGC) on the south slope.
• Work continued on the construction of the toe drain and gas collector trenches on the west slope.
Progress on South Slope
South Slope: February 5
South Slope: February 13
EGC Placement
Feb 5
Feb 13
Deploying Geomembrane
Deploying Geomembrane
Deploying Geomembrane
Deploying Geomembrane
Deploying Geomembrane
Deploying Geomembrane
Deploying Geomembrane
Deploying Geomembrane
Placing Sandbags
Sand bags are used to hold geomembrane temporarily in place.
Fusion Welding
Fusion Welder
Geomembrane rolls are fusion weldedtogether with a doublehot wedge weld.
Fusion Welder
Double Wedge Fusion Welder
Anchor Trench
EGC Anchor Trench
Extrusion Weld on Anchor Trench
The weld at the anchortrench overlap is an extrusion weld.
Injection Wells
The EGC is installed on the surface of landfill, above the injection wells. The wells must be extended through thecap after placement in a manner that provides a gas-tight connection. The following slides illustrate this process
Solid Wasteand Daily
Cover
Soil
2-inch PVC injection wells TemporaryCaps
Thermocouple Wire
Process of Constructing EGC
over Injection Wells
EGC – Wells 1
VFPE Geomembrane Placed on Surface of Landfill
Process of Constructing EGC
over Injection Wells
EGC Wells 2
Geomembrane Cut Around Wells
Process of Constructing EGC
over Injection Wells
EGC Wells 3
Geomembrane Cut Around Wells
EGC – Wells 4
Process of Constructing EGC
over Injection Wells
Extrusion Weld Boots
EGC – Wells 4
Process of Constructing EGC
over Injection Wells
EGC and Wells
As soon as geomembraneis pulled over wells, locationis marked.
At a later time, the geomembrane is cut aroundwell.
Temporary Well Boots
Temporary Well Boots
Temporary Well Boots after Well Extension
Permanent Well Expansion Boots
Boot Construction 1
Construction of Expansion Boot: 1 Note: Geomembrane used
for boot is illustratedin red for clarity.
Note: Boots are prefabricatedon site.Geomembrane Collar Around Well
Boot Construction 2
Construction of Expansion Boot: 2 Note: Geomembrane used
for boot is illustratedin red for clarity.
Note: Boots are prefabricatedon site.
Boot Base Sheet
Extrusion Weld
Boot Construction 3
Construction of Expansion Boot:3 Note: Geomembrane used
for boot is illustratedin red for clarity.
Note: Boots are prefabricatedon site.
Note: Boot Collar is Shownslightly expanded for clarity.
Boot Bellows
Extrusion Weld
Boo Construction 4
Construction of Expansion Boot: 4 Note: Geomembrane used
for boot is illustratedin red for clarity.
Note: Boots are prefabricatedon site.
Note: Boot Collar is Shownslightly expanded for clarity.
Neoprene Gasket
Clamp
Prefab Boots
PrefabricatedWell Boots
How Boot Works - 1
How Does Expansion Boot Work?
Initial Condition
How Boot Works - 2
How Does Expansion Boot Work?
Landfill Settles
How Boot Works - 3
How Does Expansion Boot Work?
Adjust Collar
MTG
A similar booting system is used for the MTG sensors
MTG 2
A similar booting system is used for the
MTG sensors
West Side Toe Drain
Construction of Toe Drain and Gas Collectors on the
West Side
Welding Gas Pipe
Bioreactor Sign
End
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