Environmental Equipment Rental
Cox-Colvin & Associates rents the following environmental remediation systems for long- and short-term projects:
Air Sparge / Soil Vapor Extraction (AS/SVE) Trailer Unit
Cox-Colvin's AS/SVE rental unit is ideal for pilot testing or long-term remediation jobs. This unit is capable of extracting both liquid and vapor streams and/or air sparging from multiple points to provide effective remediation of VOCs in vadose zone soil and/or groundwater. Once extracted, the VOC-contaminated streams are sent through an air/water separator to remove any liquids, prior to passing through the extraction pump. If a large volume of liquid is anticipated, a large-capacity holding tank is also available for rent. After exiting the pump, the VOC-contaminated vapor stream enters the granular activated carbon (GAC) vessel. The treated vapor stream is discharged to the atmosphere through a stack in the trailer. During operation, totalized VOC concentrations prior to and after GAC treatment are measured and displayed through inline photoionization detectors (PIDs). The sparge and extraction flows are also able to be viewed. An alarm transmittal and data acquisition system is incorporated into the unit which is capable of transmitting/storing system alarms and continuously logging PID, flow, and vacuum data.
AS/SVE System specifications
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High Vacuum Dual Phase Extraction (HVDPE) Trailer Unit
Cox-Colvin's HVDPE rental unit is ideal for pilot-testing or long-term jobs. This unit is capable of extracting both liquid and vapor streams from multiple points to provide effective remediation of VOCs in vadose zone soil or bedrock. Once extracted, the VOC-contaminated streams are sent through an air/water separator to remove any liquids, prior to passing through the extraction pump. If a large amount of liquid generation is anticipated, a large-capacity holding tank is also available for rent. After exiting the pump, the VOC-contaminated stream is cooled by an air-to-air heat exchanger. The vapor stream then passes through a condensate tank, before entering the granular activated carbon (GAC) vessel which is staged outside of the trailer to allow for use of multiple vessels. The treated stream is discharged to the atmosphere. During operation, totalized VOC concentrations prior to GAC treatment are measured and displayed through an in-line photoionization detector (PID). The extraction flow rate and totalized water generation also are able to be viewed. An alarm transmittal and data acquisition system is incorporated into the unit which is capable of transmitting/storing system alarms and continuously logging PID, extraction flow, and water generation data.
HVDPE System specifications
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