AS/SVE
Air Sparge and Soil Vapor Extraction (AS/SVE) Systems are often combined, which allows the Air Sparge system to inject pressurized air into the soil or ground water while the SVE system applies negative pressure in the subsurface, above the water table. AS/SVE systems are an efficient method of removing vapor phase contaminants from soil and ground water.
Features:
- Blower and Motor
- PRM Moisture Separator
- Rotary Vane, Rotary Claw or Rotary Screw Air Compressors or Blowers
- Particulate Inlet Filter, Auto Dilution
- Variable Frequency Drives
- Silencers
- PRM Flow Meters and Pressure Gauges
- Fully Automated- One Touch Start-Up & Shut Down
- Nema IV Industrial Control Panel, UL Listed and Third Party Certified
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Oil-Less Air Sparge System |
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Carbon Filtration |
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Temperature Monitoring |
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Full SCADA Telemetry Package Including Web Based Browser Interface |
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Built on skid, trailer, or container customized to your requirements |
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SVE
Our design experts can assist you in selecting the proper system to meet your specific site design requirements.
PRM Soil Vapor Extraction Systems typically include a NEMA 4 control panel, blower or vacuum pump, motor, moisture separator, high level switch, header assembly, and an inlet filter in an integrated factory tested package. Optional items such as vacuum gauges, low indicators, temperature indicators, and filtration can be specified per your application.
When designing your system, it is important to consider the number of extraction wells, required flow rate, site elevation, friction losses from piping, headers, carbon systems, oxidizer, heat exchangers, or other equipment that can affect the blower performance.
Regenerative blowers are a good choice for low to moderate flow-vacuum-pressure requirements. They produce low noise levels and are an economical option. Positive displacement blowers are generally used in higher flow-vacuum-pressure, and are more economical due to lower horsepower requirements. When using positive displacement blowers it is important to match the rotation speeds for optimum efficiency and reliability while regulating noise levels. Contact PRM if you need assistance in sizing your blower for specific project requirements.
Soil Vapor Extraction Systems can be combined with other technologies such as liquid ring pumps, air sparge systems, and pump and treat systems to enhance performance.
Air Sparge
PRM has manufactured Air Sparging systems for the remediation of soil and groundwater for over 25 years. These systems can be used for petroleum and chlorinated contamination removal. Air sparging is generally more effective in sandy-silty soils.
Air sparge systems typically consist of a NEMA IV Control panel, an air compressor, rotary vane or positive displacement blower to pressurize ambient air. A heat exchanger is used to reduce the temperature of the pressurized air stream prior to injection. The manifold system is used to distribute the pressurized air to the injection wells. These systems can be skid mounted or incorporated into a trailer or building.
Positive displacement blowers are typically selected for moderate to high flow rates and low to moderate pressures.
Rotary vane compressors are generally selected for lower flow rates and low to moderate pressures.
Rotary screw compressors are a better choice for higher flow and
pressures.
Air Sparging systems are often used in conjunction with SVE systems that create a negative pressure in the formation to enhance the removal of the contaminated air from the Air Sparging process. When designing a dual system it is important to have the proper controls that allow the SVE and Air Sparge to properly interact.
Considerations in the design of an air sparge system include required air flow rate, air pressure, soil matrix, the number of injection wells, and the well design. Consult with the PRM design team for assistance in choosing the proper equipment for your site application.