Timothy Warner Managing Director

TRS Europe

In Situ Thermal Remediation and Principles of

Electrical Resistance Heating (ERH)

© 2017 TRS Europe. All rights reserved.

• TRS Group JV with HMVT – 2013 • Coverage throughout Europe • Rapid remediation • Guaranteed certainty

Thermal Remediation Services BV (TRS Europe)

Thermal Alliance

Matrix Diffusion

Steam Injection Pros • Low Energy Costs • Good for Huge Scales Cons • Permeability Limited • Labor Intensive • Difficult to Control

ERH Pros • Most Energy Efficient • Not Limited by

Permeability • Insensitive to

Saturation • Easiest to Control and

Shut Down Cons • No Crystalline Bedrock

Experience • Keep Electrode/Soil

Wet

Thermal Conduction Pros • Exceeds Water Boiling

Point to Treat SVOCs • Insensitive to

Permeability • Good for Debris

Treatment Cons • Desiccation near

Heaters • VR required when Shut

Down

Thermal Technologies

TRS ERH PROCESS

Electricity is directed into the subsurface area. TRS ERH PROCESS

TRS Power Control Unit

Electrical Resistance Heating

ERH Advantages

• Less wasted heat energy

• Water is our friend

• No desiccation - under buildings & roads

• Vadose, saturated zone and bedrock

• Steaming stops upon power loss

• Hydraulic & vapor control

Electrodes Vertically Bored - typical

and Options

Horizontal

Angled Sheet Pile

Power Control Unit

Condenser with Cooling Towers

Step Down Transformer

Blower with Sound Enclosure

ERH Equipment

ERH Below Occupied Buildings

Below Grade - Residential Neighborhood

Large Brownfields Site

TCE in Sedimentary Rock

27.4 m rock sequence Sandstone ~8% primary porosity

• Former industrial area – chemical distributor • Redevelopment into housing • Variety of pollutants • Estimated mass: 12-50 tons • Total soil volume: 23.875m³

excavated

Heterogeneous clay

Sand/gravel

Clay - basis

Sand

-3m

-6m

-13m

-18m

TRS Europe Project Example #1 near Brussels, Belgium

• 30 shallow/12 deep electrodes • 21 Soil Vapor Extraction wells • 7 Temperature Monitoring

Points • Groundwater Monitoring Wells

• 9 shallow • 4 deep

System Design

Remedial Goals • 5% solubility levels • Guaranteed Fixed Price

• Steam Condenser • Ventilator • VOC Condenser • Aliphatic Scrubbing • Catalytic Oxidizer • Acid Scrubbing • GAC

Vapor Treatment

• 215 days of operation • ± 25 tons of product removed • Shallow – targets achieved

• 99,8% reduction rate • Deep – targets achieved

• 78% reduction rate*

*water flow rate >> larger

Results

TRS Europe Project Example #2 near Troyes, France

• Former chemical storage and distribution facility • Redevelopment • Treatment area/volume: 1160 m2, 9200 m3 • Electrodes: 52 • Estimated mass: 25,000 kg PCE • Remedial goal: < 7,500 µg/L • Guaranteed Contract

Site Parameters

Results to Date

Conclusions

• ERH solves the matrix diffusion problem

• Works in vadose & saturated zones

• Fast - even in rock and clay

• Guaranteed remediation success

QUESTIONS?

© 2017 TRS Europe. All rights reserved.

Timothy Warner Managing Director TRS Europe Timothy.warner@thermalrs.eu

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