Remediation Products & Services

In situ groundwater remediation technologies for every zone of your plume.

Site Remediation Solutions

When it comes to contaminated site remediation there is a broad range of possible solutions. Tersus offers a diverse selection of products and technologies. Not focused on a single technology, Tersus offers the right solution for your site-specific needs.  Our proven technologies help our clients reduce uncertainty, minimize risks, and achieve cost-effective results.  For every zone of your plume, we’ve got you covered! 

This section highlights some of our most popular products by treatment category.  Learn more about our products by selecting a treatment category. 

 We look forward to helping you develop the optimally cost-effective, remediation approach.

 

Surfactant-Enhanced Aquifer Remediation
Surfactant-enhanced aquifer remediation (SEAR) is a cost-effective alternative to conventional pump-and-treat remediation for aquifers contaminated by non-aqueous phase organic liquids. Tersus is the worldwide distributor of the leading surfactant technology, TASK™ (Tersus Advanced Surface Kinetics), and related products, including patented methods for in situ surfactant and chemical oxidation. Supported by nearly two decades of research and testing at the University of Oklahoma, TASK™ offers a wide range of applications related to hydrocarbon contamination flushing.
Emulsified Zero-Valent Iron (eZVI)
eZVI is an emulsion of powdered zero-valent iron, surfactant, vegetable oil, and water specifically designed for the remediation of source zones impacted with halogenated hydrocarbons. eZVI has the unique ability to mix with dense non-aqueous phase liquids (DNAPLs) by capitalizing on the ability of food-grade surfactants, biodegradable vegetable oil, water, and zero-valent iron to form hydrophobic emulsion droplets (micelles) that are miscible with DNAPL material. Abiotic reductive dechlorination occurs as the halogenated hydrocarbons in DNAPL diffuse through the outer oil membrane into the interior aqueous phase of the emulsion, which contains zero-valent iron. Enclosing zero-valent iron within a hydrophobic membrane protects the nano-microscale iron from native groundwater elements that might otherwise waste the iron’s reducing capacity. This subsequently reduces the mass of eZVI available to treat target contaminants and lowers overall project costs. In addition to the abiotic reactions provided by the ZVI, the vegetable oil and surfactant components present in eZVI act as a long-term electron donor for enhanced biological reductive dechlorination. 
In Situ Sorption and Biodegradation
Combining powdered activated carbon with an electron acceptor to stimulate biodegradation, NutriBind® is designed to address the challenges inherent in soil and groundwater remediation. NutriBind® is a powdered reagent that, once applied, delivers rapid contaminant concentration reduction combined with accelerated bioremediation.
Zero Valent Iron (ZVI)
Looking for a ZVI solution? Tersus offers Höganäs’ Cleanit® technology, a uniquely engineered ZVI media that is extremely porous and reactive and has a large surface area, providing exceptional performance. Here is a comparison between the performance levels of typical ZVI andCleanit®, by hydrogen production:
  • Gas production rate of Cleanit® is about 8 times higher
  • Total yield of gas production is 53 times greater with Cleanit® 
  • Cleanit® continuously produces gas for more than 250 days opposed to 15 days by typical ZVI
  • Cleanit® reduces remediation time drastically
  • Using Cleanit® passivation is very slow
In Situ Chemical Reduction (ISCR)
In Situ Chemical Reduction (ISCR) is an innovative environmental technique used for soil and/or groundwater remediation that reduces the concentrations of targeted environmental contaminants to acceptable levels.
Enhanced Anaerobic Bioremediation

Under anaerobic conditions, organic contaminants can serve as the electron donors or electron acceptors during biodegradation processes (USEPA, 2013).

Electron Donors for Anaerobic Reductive Bioremediation

Anaerobic reductive bioremediation is the practice of adding biologically available organic bioremediation amendments, referred to as organic substrates or electron donors, to groundwater to generate and sustain anoxic conditions by consuming oxygen via aerobic respiration, as well as other electron acceptors, during its biodegradation. By generating hydrogen through fermentation reactions, it promotes the bioreduction of oxidized contaminants such as chlorinated solvents. The chlorinated compounds serve as electron acceptors and undergo reductive dechlorination under anaerobic conditions in the presence of an electron donor (USEPA, 2013). Tersus bioremediation amendments are formulated to optimize in situ remediation of contaminated soil and groundwater. We provide:

  • Emulsified Vegetable Oils (EVO): NanoEVO™ and EDS-ER™
  • EVO Emulsifiers: TASK™ NanoEVO™ Self Emulsifier and TASK™ MicroEVO™ Self Emulsifier
  • Soluble electron donor and nutrients: EDS-QR™ and Nutrimens®
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Is anaerobic reductive bioremediation the right solution for your contamination? Find out here.   

Electron Acceptors for Anaerobic Oxidative Bioremediation

At petroleum-contaminated sites where oxygen has already been depleted,  anaerobic oxidative bioremediation is often applied.  In the absence of oxygen, anaerobic oxidative bioremediation relies on other electron acceptors such as nitrate or sulfate for direct microbial metabolic oxidation of a contaminant (USEPA, 2013).  Amendments with soluble sulfate and electron donor such as Nutrisulfate® are often added to the affected area to stimulate sulfate-reducing conditions to help microbes metabolize the petroleum compounds.

Bioaugmentation Cultures

The complete reductive dechlorination of chlorinated ethenes yields non-toxic ethene as a final product. Absent the right bacteria, you could see an accumulation of vinyl chloride. Although not necessary at every site, Tersus recommends the use of KB-1® bioaugmentation cultures.

KB-1® and KB-1® Plus bioaugmentation cultures by SiREM have been used for over a decade to enhance bioremediation of chlorinated solvents. These cultures introduce beneficial microorganisms to contaminated sites where they are absent or at low concentrations. Bioaugmentation with KB-1® and KB-1® Plus is an effective solution to enhance remediation of a growing range of chlorinated solvents and other recalcitrant compounds.

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Enhanced Aerobic Biodegradation
Enhanced aerobic biodegradation is the practice of adding oxygen to saturated soil and groundwater to encourage and sustain the growth of microorganisms required for in situ bioremediation of contaminated groundwater.  It is typically used to treat low to moderate levels of contamination. Our product offerings include:
  • TersOx™ - a specially formulated inorganic peroxygen, calcium peroxide, that produces a controlled-release of molecular oxygen
  • Waterloo Emitter™ - a simple, low cost  in well device designed for the controlled and uniform release of oxygen, or other bioenhancing amendments

Our skill and experience implementing in situ remediation creates high-value solutions to complex groundwater and soil contamination and related issues at a lower cost. Tersus welcomes the opportunity to provide you and your team with the tools you need to successfully plan and execute your next project. 

Request a Site Evaluation

Have questions or want to explore some ideas?  Contact Us   to learn how we can put together a money saving program to get your project over the finish line. If you currently have a project and need a remediation solution now, request a site evaluation by supplying us with the appropriate site information at this link.

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Is one of the above technologies the right solution for your contamination concern?   Find out here

Laboratory

Treatability Studies

Treatability studies provide an opportunity to evaluate and optimize site-specific remediation performance variables in a controlled laboratory setting.

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Field Support

On-site

We offer on-site remediation services for environmental consulting firms and contractors.

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Equipment

Subsurface Delivery Systems

Have an upcoming injection project using wells? Want to keep the billable hours in-house? Tersus has additive injection and groundwater recirculation trailers available for short- or long-term leases.

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