Presentation Excerpts

 

PHYTO-INTEGRATED Remediation
Expanding Phytoremediation

– Combining Engineering,
Treatment Media, & Vegetation –

New Perspective on Phytoremediation 

Misconceptions about Phytoremediation of Groundwater

  • Results are inconsistent
  • Has limited applications (shallow aquifers)

Engineered Phytoremediation
– The TreeWell® Technology Solution –

  • Confidently predict hydraulic effects
  • Assured remedial impact on soluble contaminants
  • Treat groundwater up to 30 meters deep (and more)
  • Targets specific horizons over a wide range of conditions
  • Limits/Eliminates
    • phytotoxicity – via bioreactor effect
    • surface/rainwater confounding & irrigation needs

TreeWell Technology
Basic Approach

1. Borehole excavated to the horizon of interest

2. Root_Sleeve liner to be placed in the hole

3. Root_Sleeve  liner installed after safety platform is placed over the hole – aeration & other tubing added

4. Hole is backfilled with topsoil & selected amendments

5. Trees are planted

TreeWell Technology
Design Options

Hydraulic and/or
Bio-Barrier

Deep Groundwater Target

Phyto-Integrated Remediation
“Straw” system w/replaceable cartridge

  • Tree removes GW in closed system creating a hydraulic head
  • GW flows into the lower piezometer screen at targeted horizon
  • GW flows up through amendment cartridge for:
    • treatment (Proprietary ISCR Reagents for CVOCs/ pesticides/oxidized metals, or
    • sorption (metals & compounds such as PFAS)
  • Treated GW enters closed system through upper screen for use by tree

Request for Demonstration Sites

Required characteristics:

  • Groundwater plume that needs to be remediated
  • Sufficient space and time for phytoremediation approach
  • Type 1: Groundwater contamination with CVOCs, PFAS, Metals
  • Type 2: Groundwater with deep contaminated layer (including
    fractured bedrock strata)

Benefits:

  • Lower life-time cost
  • Lower maintenance
  • Passive/active system that improves with time
  • Green, sustainable and effective technology