Multiphase Extraction


Vertex Environmental Inc. specializes in the design, implementation and optimization of remedial systems including multi-phase extraction (MPE) systems. Vertex staff designed, permitted, optimized and operated a MPE system in southern Ontario for the containment and extraction of chlorinated ethene impacted groundwater including the extraction of free product. The system was installed in a silty sand geologic medium at a former manufacturing facility. The system was designed to handle a high flow of groundwater and vapour while responding to fluctuations in the water table. The treatment system consisted of an air stripper, particulate filter and activated carbon for both air and water. An additional treatment train of permanganate was added for vinyl chloride in air.

Scope of Work

Compounds treated using the MPE system included:

  • Chlorinated ethenes
    • PCE
    • TCE
    • cis-1,2 DCE
    • vinyl chloride
  • Petroleum hydrocarbons

The Vertex Approach

Screen Shot 2015-08-17 at 6.57.05 PMScreen Shot 2015-08-17 at 6.57.13 PMThe keys to the successful application of a MPE system is choosing the right combination of pumps and vacuums along with proper infrastructure to minimize leaks. The system operational time was greater than 78% and within 1 month of reviewing the system the area of influence was increased by over 89%. The system was able to remove free phase DNAPL which aided in the successful submission of a risk assessment for the site

Vertex combines strong theorical understanding with practical experience to properly plan and implement the right remedial program for your site. Selecting Vertex to undertake your remediation project allows you to access a wealth of experience and knowledge.