Behandeling van PFAS in grond en grondwater ( www.hmvt.nl)

1. Environmental Solutions
PFAS soil & water treatment
January 2020
www.hmvt.eu
Environmental Solutions

2. PFAS remediation of Soil
• HMVT partners with TRS US to provide in- and ex-situ thermal remediation.
• This via our Joint Venture company called TRS Europe.
• PFAS soil treatment is therefore carried out via TRS Europe
PFAS treatment of Water
• HMVT can offer different water treatment solutions.
• Activated Carbon, Ion Exchange or PerfluorAd Technology.
• For PerfluorAd Technology HMVT partners with Cornelsen GMBH.
• This presentation focusses on the proven technology of PerfluorAd.
Environmental Solutions
PFAS remediation of Soil & treatment of Water

3. Environmental Solutions
PFAS remediation of Soil
PFAS remediation of Soil
• HMVT partners with TRS US to provide in- and ex-situ thermal remediation.
• This via our Joint Venture company called TRS Europe.
• PFAS soil treatment is therefore carried out via TRS Europe
Technology
• Use of Conductive Heating (CH)
• In-situ Vadose Zone
• Ex-situ Cells

4. Environmental Solutions
PFAS remediation of Soil
Contaminant Boling Points
TCE PCE Xylenes Napthalene PCB Dioxin PFAS
PAH
Electrical Resistance Heating
Thermal Conduction Heating
100°C 200°C 300°CBoiling Points:
Steam Enhanced Extraction
Chlorobenzenes

5. Environmental Solutions
PFAS remediation of Soil
Proof of Concept
• Pilot Tests carried out
• Ex-situ Cells

6. Environmental Solutions
PFAS remediation of Soil
Proof of Concept
Ex-situ Cell heat-up

7. Environmental Solutions
PFAS remediation of Soil
Proof of Concept
PFAS Volatilization from Soil: Time & Temperature

8. Environmental Solutions
PFAS
Starting Concentration
(ppb)
% reduction
PFOS 21000 >99.999%
PFBA 91 >99.999%
PFPeA 100 >99.999%
PFBS 41 >99.999%
PFHxA 200 >99.999%
PFHpA 27 >99.998%
PFHxS 1600 >99.999%
PFNA 16 >99.997%
PFDS 48 >99.999%
PFOA 64 >99.865%
PFAS remediation of Soil
Proof of Concept
PFAS Soil removal at 400 oC

9. Environmental Solutions
• Heating & evaporation
• Condensation of steam & PFAS
• Water treatment (GAC or PerfluorAd)
• Vapor treatment (GAC)
Heat
Exchanger Scrubber
Blower/Vacuum
Pump
Vapors to Stack
Cooling Water
Return
Cooling Water
Upper Vadose Zone
Treated at 350°C
Transition Zone
(100 - 350°C)
Not Treated
Water Table
Source
Air Phase
GAC
To Water Treatment
PFAS remediation of Soil
Treatment System

10. Environmental Solutions
PFAS remediation of Soil
Next steps
• Test results.
• Temperatures achieved.
• Two U.S. Government Projects – in-situ and ex-situ – awarded.
• 1x ex-situ pile treatment
• 1x in-situ vadose zone

11. Environmental Solutions
PFAS treatment of Water
PFAS treatment of Water
• HMVT can offer different water treatment solutions.
• Activated Carbon, Ion Exchange or PerfluorAd Technology.
• For PerfluorAd Technology HMVT partners with Cornelsen GMBH.
• This presentation focusses on:
• The proven technology of PerfluorAd.
• An example project in Amsterdam.

12. Traditional GAC treatment
Environmental Solutions
PFAS treatment of Water
The PerfluorAd Technology
PerfluorAd treatment

13. Environmental Solutions
PFAS treatment of Water
The PerfluorAd Technology
• PerfluorAd is a liquid flocculant.
• Dosing in a reactor.
• Based on differences in electrical charges
between the PFAS molecules.
• Creation of micro-flocs between PerfluorAd and
PFAS molecules.
• PFAS flocs removed by filtration/precipitation.

14. • Proven Technology & ITRC proved.
• Multiple successful projects in Germany.
• HMVT carried out a first successful project in The Netherlands: ‘Cruqiusweg Amsterdam’.
• PerfluorAd removes the bulk of the PFAS (up to >98%).
• No negative influence by DOC or other pollutants.
• Activated carbon only needed for polishing.
Environmental Solutions
PFAS treatment of Water
The PerfluorAd Technology

15. Environmental Solutions
PFAS treatment of Water
PerfluorAd vs Activated Carbon
• Carbon or PerfluorAd: always custom made.
• Carbon:
• Very low concentrations of PFAS in water (<1 µg/l)
• Low mass of PFAS in water
• Short period or very low water flow.
• PerfluorAd:
• Hi concentrations: source zones, fire foams.
• A lot of pollutant mass
• Long project period
• Competing pollutants in water.
• Tipping point often favours PerfluorAd

16. Environmental Solutions
PFAS treatment of Water
PerfluorAd Reference ‘Cruqiusweg Amsterdam’
Project outline
• Groundwater from dewatering during excavation.
• Groundwater is collected in a big storage tank.
• Flow rate 1,5-2,0 m³/hr.
• Discharge limit for PFAS was 1 µg/l.

17. Environmental Solutions
PFAS treatment of Water
PerfluorAd Reference ‘Cruqiusweg Amsterdam’
Results

18. Environmental Solutions