air sparging system Articles

  • SVE and Air Sparging

    Stage 1: The system is a PLC controlled plant equipped with telemetry. Rotary Lobe blowers were used to abstract vapour contaminated with chlorinated hydrocarbons and a similar high pressure blower was used to inject air via solenoid valves individually controlled by the PLC. Extracted vapour was treated in large GRS 2 tonne vapour-phase activated carbon vessels.Stage 2: The system comprised ...


  • Air Sparging - Technology Overview

    Air sparging involves injecting a gas (usually air/oxygen) under pressure into the saturated zone to volatilize groundwater contaminants and to promote biodegradation in saturated and unsaturated soils by increasing subsurface oxygen concentrations. Vola tilized vapors migrate into the vadose zone where they are extracted via vacuum, generally by a soil vapor extraction system. The term ...

  • Air bubble and oil droplet interactions in centrifugal fields during air-sparged hydrocyclone flotation

    The interactions of air bubbles and oil droplets in centrifugal flotation have been considered with respect to process conditions present during Air-sparged Hydrocyclone (ASH) flotation. Encounter efficiency of oil droplets with air bubbles has been found to be significantly smaller when compared to encounter efficiency of mineral particles. Collision and sliding contact times have been ...


    By Inderscience Publishers

  • Bioventing systems at Alaska air force base achieve cleanup closures

    The U.S. Air Force and Alaska Department of Environmental Conservation (ADEC) collaborated in installing and operating seven full-scale bioventing systems over the last 10 years to address hydrocarbon and VOC contamination at the King Salmon Airport (KSA) in Alaska. Five of the systems achieved cleanup closure within five years of operation, and another is currently under closure review. The ...

  • LATEST TECHNOLOGY: Smartphone SVE BLOWER & OXIDIZER SYSTEMS with Remote Monitoring

    SOIL-THERM designs and builds SVE Blower and Oxidizer systems for environmental and remediation applications that are full of features and LOW in price. By integrating advanced PLC capabilities into these systems, SOIL-THERM offers our customers a whole new level of capabilities.  The SVE Blower system with or without oxidizer allows changes to flows, blower speeds, alarms, manual ...


    By Soil-Therm Equipment, Inc.

  • An evaluation of the residual toxicity and chemistry of a sodium hydroxide‐based ballast water treatment system for freshwater ships

    Non‐native organisms in the ballast water (BW) of freshwater ships must be killed to prevent the spread of invasive species. The ideal BW treatment system (BWTS) would kill 100% of BW organisms with minimal residual toxicity to organisms in receiving waters. The residual toxicity and chemistry of a BWTS was evaluated: sodium hydroxide was added to elevate pH to > 11.5 to kill BW organisms, ...


    By John Wiley & Sons, Ltd.

  • Soil and Ground Water Remediation Case Study

    On this State Funded Clean-Up project, Global was the project engineer and was responsible for the design of an air sparging/soil vapor extraction remediation system. The system included five soil vapor extraction wells and twelve sparging wells that operated on a rotating schedule. One of the soil vapor extraction wells and nine of the sparging wells were installed as horizontal wells beneath ...

  • Introduction to Ozone Injection Technology

    Untitled Document Ozone is a highly reactive chemical that has proven to be effective in destroying a wide variety of organic chemicals, including MtBE and chlorinated VOCs. ...

  • Evaluation of a Horizontal Well

    Background: Air Sparging Air sparging is an in-situ remediation technology where air is injected into the saturated zone of an aquifer. It is an alternative to conventional ex-situ pump and treat systems for remediation of contaminated ground water. It is necessary to understand the pattern of air flow that will occur in the subsurface in order to determine the optimal placement, ...

  • Insitu Cleanup in Less than 5 Months

    The owner of the property obtained pricing to clean up the property from several environmental companies and the cost was approximately $230,000.00 for a typical air sparge, vapor recovery system. The time frame for cleanup was approximately 3 years with no guarantee that the site would ever clean up or the cleanup costs would not increase. Bioworld/Southeast priced the cleanup for the same ...

  • Ozone pilot study at Camp Lejeune - Marine Coprs Base

    Air and Ozone Sparging of TCE Using a Directionally Drilled Horizontal Well#11;#11;Site 86, Camp Lejeune CH2M HILL used a Piper Environmental Group ozone injection system for site remediation purposes with good results. Site 86 is associated with three former waste oil ASTs, used during the 70s and 80s. Over the course of several investigations since 1992, the solvent plume migrated away ...

  • ORC vs. AS/SVE Cost Comparison at UST Site, Covington, IN

    Site Summary The site, located in Covington, Indiana, was chosen for a pilot test, to demonstrate the effectiveness of ORC in treating the existing benzene and MTBE concentrations. Contamination in the groundwater had resulted from leaking gasoline UST’s. In addition to the pilot test, a cost-comparison was also prepared to illustrate the potential for cost savings associated with the use of a ...


    By REGENESIS

  • Common Treatment Train for Nonhalogenated VOCs

    A treatment train is the combination of different treatment technologies. A system diagram of a common treatment train for nonhalogenated VOCs is illustrated below. A soil vapor extraction system is used to pull VOC vapor from the contaminated soil. An air sparging system delivers air below the water table to enhance bioremediation. After passing through a liquid/vapor separator, the VOC ...

  • Common Treatment Technologies for Fuels in Ground Water, Surface Water, and Leachate

    It may be necessary to know other subsurface information to remediate fuels in ground water. Treatability testing to characterize contaminant biodegradability and nutrient content may be needed for any biodegradation technology. A subsurface geologic characterization would be particularly important to characterize the migration of NAPLs. Recovery tests are usually necessary to design a ...

  • Horizontal Remediation Wells used in order to preserve military security

    Project Description: Remediate a plume of trichloroethylene (TCE) under multiple military buildings by air sparging (AS) and soil vapor extraction (SVE). There are two target zones: the shallow zone is approximately 70' below grounds surface (bgs) and 20' below this is the deep zone. The plume was located under multiple buildings comprising an area of approximately 150,000 SF. Scope of Work: ...

  • Raynesway resource park - Case Study

    The Raynesway Resource Park is a 35 hectare site bounded on three sides by the River Derwent. The southern half of a former chemicals plant, soils and groundwaters were impacted by chlorinated solvents, acid tars, hydrocarbons and ammoniacal sludges. Celtic designed a sophisticated groundwater treatment system, integrating air sparging, multi-phase extraction and chemical oxidation to address ...


    By CELTIC Technologies Ltd

  • Gasoline pipeline break - Sun Oil Company

    LOCATION:  Ambler, PAPROJECT DATE:  July, 1972 to January, 1974CLIENT:  Sun Oil Company BACKGROUND: A pipeline break spilled an estimated 3,186 barrels of high octane gasoline into an aquifer composed of a highly fractured dolomite. The gasoline was contained by pumping nearby wells. Physical recovery of the gasoline continued until no longer productive an estimated 1,000 barrels ...


    By Terra Systems, Inc. (TSI)

  • Soil and groundwater remediation

    At a site in northern Indiana on behalf of a multinational client, Troy Risk operated a groundwater remediation system to cleanup the source of chlorinated solvent impact to a groundwater aquifer system. Prior to 1988, the site was occupied by a manufacturing facility. In March 1995, chlorinated volatile compounds (CVOCs) were detected pursuant to due diligence for real estate refinancing. From ...


    By Troy Risk, Inc.

  • Nature’s Own - Biofiltration Process Offers Promise of (near) Energy-free Pollution Abatement

    A filter could be described as any substance through which liquid is passed to remove suspended impurities. Although a “biofilter” is actually not a filter, “biofiltration” is on the threshold of finding a market as a compliance solution for air pollution regulations after a number of false starts. Biofilters have long been used as a means for reducing objectionable odors in Germany, the ...


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