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Contaminant Recovery

Contaminant Recovery
The contaminant recovery system (CRS) allows for timely deployment in an emergency situation, standard site cleanup, or feasibility and pilot testing.

The CRS features a 15-hp oil-free regenerative blower with a maximum rating of 24.5 inches of Hg, a high-efficiency vapor–liquid separator, an oil–water separator with a 60-gal product storage tank, a multistage flexible air stripper, and a granular activated carbon unit. A programmable logic controller (PLC) allows for automatic system operation with on-site or telemetric data acquisition.

Integrated Remediation Technologies (IRT) Capabilities

  • Emergency and standard deployment to site
  • Trained operation and maintenance staff
  • Project-specific sampling, data acquisition, and interpretation
  • Pilot test design and technical and economic evaluation
  • Extraction well field design
  • Design and construction of vacuum-enhanced recovery systems

Primary Incentives for Use of Mobile CRS

  • The time required for removal of free-phase and highly concentrated dissolved-phase contaminants is critical to the life cycle design and economics of the subsequent remedial effort and requires the use of advanced technologies capable of multiphase contaminant recovery from heterogeneous environments.
  • The delay between contamination discovery and remedial action is typically too long and results in plume spreading and dissolution of the free-phase contaminants in groundwater. The final remedial cost is much higher than in the case when an emergency extraction unit, such as the mobile CRS, could be placed in service with minimal delay.
  • Hydraulic testing and laboratory simulation cannot provide information representative of operational parameters and site-specific response to an applied vacuum. Field extraction and treatment pilot tests have proven to be the only reliable tool for the design of full-scale systems and estimates on their economics.
  • A mobile CRS can be used in combination with injection systems to allow for enhanced delivery and controlled distribution of injected nutrients and chemicals for in situ contaminant destruction.