Hydrothermal Alkaline Treatment for Complete PFAS Destruction

Our HALT process harnesses the unique properties of hot, compressed water, the systems break the strong carbon-fluorine bonds that hold PFAS together. 
Discharge to non-detect PFAS levels.
No emissions or hydrofluoric acid.
Complete destruction of long, short, and ultra-short chain PFAS compounds. 
Less than half of the energy required to boil water to reach conditions.

Destructive properties of HALT.

By harnessing the unique properties of hot, compressed water, our system breaks the strong carbon-fluorine bonds that hold PFAS together. 
Built upon mature treatment approach.
The properties of water have been in use since the 1980s for the treatment of halogenated waste.
Rapid, Complete Destruction
By harnessing the unique properties of water and a common reagent, we’re able to get complete mineralization of PFAS with no toxic byproducts.

Compare HALT
The difference is clear.

Destructive Approach
Advantage
Disadvantage
Incineration
  • Mature approach
  • Requires temperatures >1800 °F
  • EPA intends to prohibit incineration
  • Air emissions
Electrochemical Oxidation
  • Effective for destruction of long chains 
  • Produces short chains
  • Energy intensive
  • Long residence times (~8 hours)
Plasma
  • Effective for destruction of long chains 
  • Produces short chains
  • Energy intensive
  • Long residence times (~1 hours)
UV-Sulfite
  • Effective for destruction of long chains 
  • Not as effective as other destruction methods
  • Long residence times (~8 hours)
Supercritical Water Oxidation
  • High destruction efficacy
  • Short residence times
  • Ability to recover energy
  • Inability to treat high salinity feedstocks
  • Difficult to manage system corrosion
  • Process complexity for managing exothermic reactions
  • Significant site infrastructure requirements
Hydrothermal Alkaline Treatment
  • High destruction efficacy
  • Short residence times
  • Treatment of high salinity wastewater
  • Low energy requirements with heat recovery
  • No toxic byproducts
  • No disadvantages
Information is based on currently publically available published data.
Destructive Approach
Advantage
Disadvantage
Incineration
Mature approach
Requires temperatures >1800 °F
EPA intends to prohibit incineration
Air emissions
Electrochemical Oxidation
Effective for destruction of long chains 
Produces short chains
Energy intensive
Long residence times (~8 hours)
Plasma
Effective for destruction of long chains 
Produces short chains
Energy intensive
Long residence times (~1 hours)
UV-Sulfite
Effective for destruction of long chains 
Not as effective as other destruction methods
Long residence times (~8 hours)
Supercritical Water Oxidation (SCWO)
High destruction efficacy
Short residence times
Ability to recover energy
Inability to treat high salinity feedstocks
Difficult to manage system corrosion
Process complexity for managing exothermic reactions
Significant site infrastructure requirements
Hydrothermal Alkaline Treatment (HALT)
High destruction efficacy
Short residence times
Treatment of high salinity wastewater
Low energy requirements with heat recovery
No toxic byproducts
No disadvantages
Information is based on currently publically available published data.
Product technical Specifications

Designing and delivering a first-of-its kind mobile treatment solution.

Our system accepts a variety of feedstocks to meet your treatment goals. Your water is continuously fed to the intake, and then clean water comes out.

System Performance Info
Pilot Series
Steed Series
Stampede Series
Nominal Continuous Flow Rate (gph)*
2 - 20
10 - 100
80 - 800
Turndown Ratio
10:1
10:1
10:1
Energy Consumption (kWh/m³)
310
124
124
Emissions
None - no exhaust gas
Energy Consumption (kWh/m³)
Complete mineralization of PFAS
Performance
Undergoing comprehensive life cycle testing to ensure reliability and longevity
Technical Integration
Pilot Series
Steed Series
Stampede Series
Electrical Supply
240V Single Phase
480V 3-phase
Footprint
8’ x 4’
20’ x 8’
40’ x 8’
Weight (lbs)
750
7,000
12,000
Influent/Effluent Interconnection Details
Two connections - influent and effluent
Quick and easy hook up
Can be integrated into an existing or new continuous water treatment system, or be deployed to treat large volumes of stored wastewater
Operation and Safety
All Series Units
Operation
Simplified operation with automation and remote monitoring
Operator and 24/7 system support
System can be started anywhere and can run off of a temporary generator or fixed power source
Footprint
Safety interlocks and systems are monitored with a dedicated PLC
System designed and manufactured in accordance with ASME codes
Instrumentation & Monitoring
Flow, pressure, temperature, pH
Optional service for periodic automated sample collection to validate PFAS destruction and compliance with key discharge metrics based on customer needs
Remote Operation Features
Complete integration with site remote monitoring and control systems
PLC based automation and industrial control
Touch screen interface (HMI/UI)
metrics

Peer Reviewed Studies

Scientific publications continue to affirm that hydrothermal treatment is effective and safe.

Research and Technology Partnerships

Our technology has been validated by two world-leading research institutions and is backed by six federal agencies. 
University of Washington
University of Alaska Fairbanks
Idaho National Laboratory
Colorado School of Mines
Contact us

We’re here to help.

Explore some of our commonly asked questions.
If you have any additional questions, please contact us.
How does HALT compare to SCWO?
Our process is similar to SCWO, but rather than using an oxidant to drive PFAS destruction, we use an alkaline amendment (essentially as a catalyst), which allows us to operate at much lower temperatures, pressures, and with much less process complexity
What analysis methods have been used to confirm complete defluorination / mineralization?
Standard LC-MS/MS analysis of PFAS levels coupled with fluoride ISE or IC measurement of free fluoride. This has been supplemented by non-targeted LC-QToF-MS and 19F NMR for a limited number of samples.
Can you provide more information on the reagent?  
We use a cheap caustic amendment to drive effective PFAS destruction
How much energy does the system use?
The Pilot and Steed Series units require a single 240V outlet. Energy consumed is ~127 kWh/m3 (0.48 kWh/gal) 
Do you have current availability for a pilot demonstration?
Yes, but our calendar is filling quickly! Contact us today to book a bench or pilot demonstration