World’s Largest ISTD Project - TerraTherms... · World’s Largest ISTD Project Gorm Heron Chief...
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World’s Largest ISTD Project Gorm Heron Chief Technology Officer TerraTherm
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Transcript of World’s Largest ISTD Project - TerraTherms... · World’s Largest ISTD Project Gorm Heron Chief...
World’s Largest ISTD Project Gorm Heron Chief Technology Officer TerraTherm
ADVISE | DESIGN | BUILD | OPERATE
• Scale challenges – how big can we go? • $ saved – alternatives cost a lot more • How to account for project uncertainties • Why this is the most scalable thermal technology
ISTD heater
ISTD power distribution panel
Why Listen?
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ADVISE | DESIGN | BUILD | OPERATE
Teterboro Airport
Approximate location of TTZ
Approximate location of former building foundation
Teterboro Landing, NJ
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ADVISE | DESIGN | BUILD | OPERATE
PCE TCE DCE CFC-113 10-10,000 mg/kg 30-50,000 lbs Goal: 1 mg/kg
3.2 Acre Treatment Area
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ADVISE | DESIGN | BUILD | OPERATE
°C
100
200
300
400
Heater Heater
t1
t2
t3
t1,2,3 = temperature progression
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In Situ Thermal Desorption
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ADVISE | DESIGN | BUILD | OPERATE
Subsurface Design
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16 TTZ depth
Varved silt and clay
Sand
Existing fill
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New fill
Cover Heater
Multi-phase extraction well
Heater
1.2
0.0
-3.0
-6.1
-9.1
Dep
th b
elow
orig
inal
gra
de (m
)
-4.9
Horizontal vapor extraction well
ADVISE | DESIGN | BUILD | OPERATE
907 heaters 35 MPE wells 116 horizontal SVE wells 80 TMP strings
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ADVISE | DESIGN | BUILD | OPERATE
$500,000 cheaper
than drilling
Direct Push
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ADVISE | DESIGN | BUILD | OPERATE
Title
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ADVISE | DESIGN | BUILD | OPERATE
Issues
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ADVISE | DESIGN | BUILD | OPERATE
Contingency: 35 MPE wells
Shallow Water Table
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ADVISE | DESIGN | BUILD | OPERATE
Water removal from horizontal wells
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ADVISE | DESIGN | BUILD | OPERATE
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Groundwater Influx
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ADVISE | DESIGN | BUILD | OPERATE
0
10
20
30
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60
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0 0.5 1 1.5 2 2.5 3 3.5 4
Ener
gy u
sage
(mill
ion
kWh)
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atio
n (d
ays)
Groundwater inflow (m3/hr)
Duration (days)
Energy (millionkWh)
Impact of water flowing in
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ADVISE | DESIGN | BUILD | OPERATE
Hydraulic barrier
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ADVISE | DESIGN | BUILD | OPERATE
11 MW power supply
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ADVISE | DESIGN | BUILD | OPERATE
30,000 lbs COCs CFC-113 NJ DEP regulations Neighbors
Vapor flow 3,000 scfm (4900 m3/hr) Water treatment 50 gpm (11m3/hr)
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ADVISE | DESIGN | BUILD | OPERATE
1. Temperatures 2. Mass removal 3. Soil concentrations
When are we done?
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ADVISE | DESIGN | BUILD | OPERATE
80 vertical temperature profiles
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ADVISE | DESIGN | BUILD | OPERATE
Extracted vapor temperatures
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ADVISE | DESIGN | BUILD | OPERATE
30,000 lbs (13.5 tons)
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ADVISE | DESIGN | BUILD | OPERATE
Total number of borings: - 58 per plan, 5 ft sampling
intervals - 65 (including repeat
borings) 296 soil samples collected Added 4 heaters in one small area
Soil Sampling
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ADVISE | DESIGN | BUILD | OPERATE
0.0001
0.001
0.01
0.1
1
10
100
1000
10000
100000
Chl
oroe
than
e
Met
hyle
ne C
hlor
ide
Tetra
chlo
roet
hyle
ne
Tric
hlor
oeth
ylen
e
1,1-
Dic
hlor
oeth
ylen
e
1,1-
Dic
hlor
oeth
ane
cis-
1,2-
Dic
hlor
oeth
ylen
e
trans
-1,2
-Dic
hlor
oeth
ylen
e
Freo
n-11
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1,1,
1-Tr
ichl
oroe
than
e
Vin
yl C
hlor
ide
Ben
zene
Soil
conc
entr
atio
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g/kg
)
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Final soil concentrations
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ADVISE | DESIGN | BUILD | OPERATE
0
5,000,000
10,000,000
15,000,000
20,000,000
25,000,000
30,000,000
0 20 40 60 80 100 120 140 160 180 200 220 240
Cum
ulat
ive
ener
gy (k
Wh)
Duration (days)
Actual ISTD energy inputModeled ISTD energy inputModeled energy net inModeled energy as steam outModeled energy as heat lossModeled energy as water out
Took longer Used less energy than modeled
Energy balance
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ADVISE | DESIGN | BUILD | OPERATE
Cost per cubic yard - $15 million / 122,300 cy = $120 per cubic yard How much energy – 249 kwh/m3 = 174 kWh per cubic yard 29,800 lbs of COCs removed - $503 per pound BUT: Excavation was the only other alternative Excessive cost Shallow water
?
You always ask…
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