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gas remediation Applications

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    Portable and fixed gas analysers for remediation and groundwater

    Contamination can arise from circumstances such as fuel spills and plant leaks. Geotech has developed a range of equipment to help you comply with each stage of the remediation process.

    By Geotech based in Leamington Spa, UNITED KINGDOM.

  • Remedial Construction for the Energy Sector

    ENTACT holds alliance contracts or master service agreements with most of the major energy companies in the United States. These service agreements were awarded and are maintained based upon health and safety culture and metrics, competitive pricing, and depth of experience. Our experience includes environmental and geotechnical construction projects at active refineries, exploration and production sites, terminals, pipelines, and abandoned properties.

    By ENTACT, LLC based in Grapevine, TEXAS (USA).

  • Active Refinery Remediation

    Waste Management Unit (WMU) closures at this active refinery Waste Management Unit (WMU) closures at this active refinery - Installation of several soil, Liquid Boot, and full multi-layer geocomposite cover systems in various facility locations- - Sensitive construction practices including large scale activities near power lines, 30 inch raw water line, and several active emergency flares - Completed performance based in-situ solidification/stabilization, cap and closure, using ENTACT owned large diameter auger Delmag rig and custom-fabricated Geodrill - COC`s include heavy metals, PAH, volatile organic compounds, and petroleum hydrocarbons Performance criteria include an unconfined compressive strength of 10 psi, permeability coefficient of less than 2.1x10-6 cm/sec, and an admixture pH of less than 11.5 - ENTACT performed in-house treatability analysis to develop reagent admixture

    By ENTACT, LLC based in Grapevine, TEXAS (USA).

  • Manufactured Gas Plant Site Remediation

    It is estimated that there are over 3,000 former Manufactured Gas Plant (MGP) sites across the United States. Another 4,000 dot the landscape of Canada, the UK, continental Europe and Japan. These sites were built long ago on rivers or harbors, often on the outskirts of towns and cities; locations that are now frequently in close proximity to infrastructure, buildings and residential areas. Many underlie or abut valuable commercial, residential, and municipal properties, posing environmental hazards to ground and surface waters. The urgency of remediation has increased due to a potent blend of community activism, regulatory pressure, high real estate values, and the need to reduce liability in light of the Sarbanes-Oxley Act and other measures.

    By TerraTherm, Inc. based in Gardner, MASSACHUSETTS (USA).

  • Remedial Construction for Former Oil Field Production Sites

    - Remediation of 600 former production or release sites transecting four counties - Treatment of over 500,000 cubic yards of petroleum impacted soils from the various site areas in an 8-acre bioremediation landfarm - Remediated soils are then re-used as backfill throughout the disturbed areas

    By ENTACT, LLC based in Grapevine, TEXAS (USA).

  • Air pollution control for the landfill methane remediation industry

    Methane gases used for electric generation or pipeline gas synthesis via membrane or pressure swing adsorption (PSA) processes – commonly use incinerators for air pollution control needs.

    By Catalytic Products International (CPI) based in Lake Zurich, ILLINOIS (USA).

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    Sampling and drilling equipments for the mining industry

    AMS, Inc. has been a leading provider of high quality sampling equipment since 1942. AMS sampling equipment is primarily used for environmental, geotechnical, and remediation uses as well as soil, soil gas, and groundwater monitoring. In addition, AMS makes PowerProbe direct push/hollowstem auger drill rigs for environmental and geotechnical drilling activities. AMS also manufactures and offers direct push tooling, drilling equipment, accessories, and expendables for soil sampling, groundwater sampling and monitoring well installations.

    By Art’s Manufacturing and Supply, Inc. (AMS Inc.) based in American Falls, IDAHO (USA).

  • Soil and Groundwater treatment solutions for bioremediation industry

    Today bioremediation is successfully used as soil– and groundwater remediation technology. Many bioremediation systems, both in-situ as ex-situ techniques, usually result in considerable cost savings. Since the beginning of the 1980’s both in-situ and ex-situ bioremediation projects have been successfully completed worldwide through the use of preselected and adapted bacteria. QM Environmental Services supplies a range of microbial, bioactivator and nutrient products and gas delivery systems for the use in both aerobic and anaerobic bioremediation programs. Most common contaminants ranging from aliphatic hydrocarbons such as petroleum, lubrication oils, aromatic compounds like benzene and toluene to chlorinated solvents can be treated with these products.

    By QM Environmental Services Ltd. based in The Hague, NETHERLANDS.

  • Sulfide Oxidation with Hydrogen Peroxide (H2O2)

    Sulfide Odor Control Sulfide is found throughout the environment as a result of both natural and industrial processes. Most sulfide found in nature was produced biologically (under anaerobic conditions) and occurs as free hydrogen sulfide (H2S) - characterized by its rotten egg odor. We are most likely to encounter biogenic H2S in sour groundwaters, swamps and marshes, natural gas deposits, and sewage collection/treatment systems. Manmade sources of H2S typically occur as a result of natural materials containing sulfur (e.g., coal, gas and oil) being refined into industrial products. For a variety of reasons - aesthetics (odor control), health (toxicity), ecological (oxygen depletion in receiving waters), and economic (corrosion of equipment and infrastructure) - sulfide laden wastewaters must be handled carefully and remediated before they can be released to the environment. Typical discharge limits for sulfide are < 1 mg/L. Sulfide Treatment Alternatives There are dozens of alternatives for treating sulfide laden waters, ranging from simple air stripping (for the low levels present in groundwaters) to elaborate sulfur recovery plants (used to treat several tons per day at refineries and coal burning power plants). There are processes based on biology (using compost filters, scrubbing media, or inhibition/disinfection), chemistry (oxidation, precipitation, absorption, and combination), and physics (adsorption, volatilization, and incineration). Each process occupies a niche which is often defined by the scale and continuity of treatment, whether the sulfide is in solution or is a gas, the concentration of sulfide involved, and the disposition of the sulfide containing medium. However, for reasons relating to convenience and flexibility, chemical oxidation (using hydrogen peroxide) continues to grow in its scope of application. Treatment with Hydrogen Peroxide While other peroxygens such as permonosulfuric (Caro’s) acid, peracetic acid, and persulfates will oxidize sulfide, their use for this application is overkill. Hydrogen peroxide (H2O2) is considerably simpler and more cost-effective. H2O2 may control sulfides in two ways, depending on the application: Prevention - by providing dissolved oxygen which inhibits the septic conditions which lead to biological sulfide formation; and Destruction - by oxidizing sulfide to elemental sulfur or sulfate ion.

    By USP Technologies based in Atlanta, GEORGIA (US) (USA).

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