HMVTRS presents at CSME conference, October 2013 Amsterdam 29 October 2013 HMVTRS was asked to present at the 2013 Contaminated Site Management Europe conference in Amsterdam (CSME). HMVTRS is a Joint Venture between HMVT and TRS. We presented globally the Electrical Resistance Heating Technology (ERH) and the results of two ERH in-situ remediation projects. The first presented project was a chlorinated solvent location on a bedrock location in Clark’s Summit. The second presented project was a mineral spirits and a chlorinated solvent site in Seattle. On this second site various more classical in-situ remediation technologies over the last 20 years failed to solve the problem. TRS was able by using the ERH technology to reduce on both sites the concentration levels over 99%. More information on ERH and the two cases can be found in the presented powerpoint presentation. HMVTRS was asked to present at the 2013 Contaminated Site Management Europe conference in Amsterdam (CSME). HMVTRS is a Joint Venture between HMVT and TRS. We presented an overview of the Electrical Resistance Heating Technology (ERH) and case studies of two ERH in-situ remediation projects. The first project was a chlorinated solvent (PCE) location on a bedrock site in Pennsylvania. The second presented project was a mineral spirits and a chlorinated solvent site in Seattle. On this second site various more classical in-situ remediation technologies applied over the last 20 years failed to solve the problem. TRS was able to apply the ERH technology to reduce the concentration levels on both sites by over 99%. More information on ERH and the two case studies can be found in the PDF of the presentation.

1. Electrical Resistance Heating (ERH)
For Various Applications
CSME - Amsterdam
October 2013
Jerry Wolf
(817) 379-0536
jwolf@thermalrs.com
www.thermalrs.com
Jerry.wolf@HMVTRS.nl
www.hmvtrs.eu

2. TRS ERH Global Network
TRS Group, Inc.
TRS International B.V.
(‘s Hertogenbosch, The Netherlands)
TRSDoxor, Limitada
(Sao Paulo, Brazil)
HMVTRS B.V.
(Ede, The Netherlands)

3. What is ERH?
Electricity is directed into the subsurface area.
TRS ERH PROCESS
PCU
TRS Power Control Unit
Site Building
Electrode/Vapor
Recovery Wells
VR Blower
Condenser
GAC

4. When Does ERH Apply?
• In Situ Soil and Groundwater – simultaneously
• VOCs and Semi-VOCs
• Heterogeneous Lithology
• Under Buildings, Roadways, Railroads
• Rapid Remediation – Brownfields/Property Transfer
• Mass Removal (Source) – Reduce Downgradient Migration

5. TCE in Soil and Fractured Bedrock
Clark’s Summit, PA
• TCE in soil
• Treatment Area: 260 m2; 1 to 34 m bgs; 8,487 m3
• Sand and clay between 3.3-6.6 m bgs; bedrock -fractured
sandstone with occasional siltstone; coal seams at depths of 23
and 34 m bgs. Groundwater: 5 m bgs
• Baseline levels in soil (maximum): 560 mg/kg
• Remedial goal(s):
• remove estimated mass - 219 kg TCE
• Negligible/asymptotic concentrations observed in the vapor stream
• total design energy

6. Project Site Plan

7. ERH Design
• 17 Electrodes
(6 intervals each)
• VGAC for vapor treatment

8. Energy (kWh)
Vapor Concentrations (ppm)
Vapor Concentrations vs. Energy

9. Results
• Asymptotic vapor concentrations in vapor stream reached after
79 days of operations (estimate of 69-90)
• 181 kg of CVOC mass recovered

10. Seattle Site History
• Active chemical warehouse and distribution facility
• Contaminated soil first found at the site in 1990
• Previously applied technologies
• 1995-1997: Soil Vapor Extraction with Pump & Treat
• 1998: DVE/Hydrogen peroxide injection Pilot
• 2003~2004: Potassium Permanganate and Sodium Permanganate Injection
• 2003~2004: SVE
• 2005~2007: Expanded SVE and Potassium Permanganate Pilot
• 2008~2011: Enhanced Reductive Dechlorination – downgradient
• 2010: Expanded ERD and Expanded SVE Pilot Testing

11. Guaranteed ERH Remediation of PCE
and Mineral Spirits - Seattle 2013
• Silt, sand; 7.1 x 10-3 cm/sec
• GW at 2 m bgs; flow 0.6 m/day
• 2,484 m2; variable depths; 32,188 m3
• 163 electrodes
• Elevated TOC from mineral spirits
• Active work areas & RR spurs
• Beginning maximum TCE+PCE: 4,210 mg/kg
• Remedial goal: <10 mg/kg PCE + TCE
• Contaminant mass estimate – 10,200 kg

12. ERH Modeling – 5 Areas
The site was divided into 5 Areas for purposes of modeling

13. Energy & Power Design Targets
AREA
Design Energy
(kWh)
Design Energy
Density
(kWh/m3)
1
804,000
328
2
356,000
358
3
1,064,000
383
4
5,962,000
484 shallow
209 deep
5
1,235,000
209
Total Estimated Energy Required: 9,421,000 kWh

19. Results
• Cumulative Energy – 7,377,000 kWh– 78% of total
• Average Power Input Rate – 2,557 kW (max weekly 3,438
kW)
• Average subsurface temperature – 95.2⁰C
• All treatment areas met clean up goals set by Washington
Department of Ecology
• Total cumulative mass removed – 9,404 kg
• 56% Mineral Spirits, 44% TCE, PCE
• Total project cost - €96/m3
“I am impressed to say the least, I expected things to
clean up but not be this clean!” - Seattle Client

20. Results
“I have reviewed the compliance soil sample results. I agree that
the soil remediation level of 10 ppm specified in the CAP
(Corrective Action Plan) has been met, and that the thermal
treatment system can be shut down.” – Washington Department
of Ecology

21. Seattle Potassium Permanganate

22. ERH Summary
• GFPR or SFPR – nearly 100 remediation
projects
• Perfect safety record
• In situ remediation of VOCs, semi-VOCs
• Unaffected by heterogeneity – easy to control
• Does not cause desiccation – Self-regulating
• Achieve >99% reduction
• Low cost compared to life cycle costs

23. QUESTIONS?
www.thermalrs.com
1-817-379-0536
www.hmvtrs.eu
31.318.624.624