Vironex In-Situ Chemical Oxidation National Survey
Presented at Battelle 2006 in Monterey, CA
The effectiveness of in-situ groundwater chemical oxidation technologies is a function of the delivery of reagents into direct contact with contaminants located in the dissolved, desorbed and NAPL phases.
All remediation professionals agree that contact of in-situ remediation oxidants with contaminants is key to successful remediation. However there are no guidelines or design methodologies published to help these professionals design injection approaches to ensure intimate contact.
In order to provide some clarity on this issue, Vironex has implemented a national survey of our consultant customers to determine what methods and design criteria they use to implement injection programs. The survey was completed in March 06 and was presented at the Battelle Conference Monterey 2006 conference.
This Vironex survey addressed the following:
Reagent Selection:
What design criteria are used to select a chemical oxidant.
Reagent Stoichiometry:
What design criteria are used to address DNAPL, contaminants sorbed
to soil, dissolved phase, and scavenging reactions.
What design criteria are used to define the number of injection
events.
How are bench scale treatability studies used to define oxidant
requirements.
Delivery Selection:
What design criteria are used to select injection wells, versus
recirculation wells, versus direct push injection versus fracturing.
What design criteria are used to select the length and number of
injection zones.
What design criteria are used to select mixing and pumping systems.
How are field pilot studies used to finalize full-scale injection design.
Radius of Influence:
What design criteria are used define radius of influence in both the
saturated and unsaturated zones.
What design criteria are used to specify reagent injection
concentrations and volumes.
What monitoring methods are used to verify radius of influence in the
saturated and unsaturated zones.
