vapor control Articles

  • Customization of Vapor Intrusion Control Solutions

    This is an exciting time in the development of the vapor intrusion control industry.  Significant increases in practitioner skill level and experience and the increased availability of specialized products have resulted in many innovative and customized solutions for addressing the vapor intrusion needs of developers, businesspeople, and attorneys.  This is especially true in three ...

  • Soil Vapor Extraction (In Situ)

    Introduction Soil vapor extraction (SVE) is an in situ unsaturated (vadose) zone soil remediation technology in which a vacuum is applied to the soil to induce the controlled flow of air and remove volatile and some semivolatile contaminants from the soil. The gas leaving the soil may be treated to recover or destroy the contaminants, depending on local and state air discharge regulations. ...

  • Vapor Intrusion: Risks and Challenges

    Vapor Intrusion (VI), defined as the migration of volatile contaminants from the subsurface into the indoor air of overlying buildings, is a major and challenging environmental issue for both regulators and the regulated community—one that continues to elicit heated debate among stakeholders. Eight factors associated with the VI pathway that contribute to its challenging nature are discussed ...

  • Vapor Machines for Hardwood Floor Maintenance

    Maintenance professionals around the world now choose the most advanced cleaning, sanitizing and deodorizing techniques, to maintain different areas in commercial and industrial settings. This is applicable in the case of floors as well. More and more cleaning experts continue to choose portable steam cleaner machines to maintain hardwood floors. When compared to traditional techniques of ...


    By Daimer Industries Inc.

  • New EPA Draft Guidance on Vapor Intrusion

    One of the primary objectives of the Office of Solid Waste and Emergency Response (OSWER) under EPA’s Strategic Plan is stated as: “By 2005, EPA and its state, tribal and local partners will reduce or control the risk to human health and the environment at more than 374,000 contaminated Superfund, RCRA, underground storage tank (UST), brownfields and oil sites, and have the planning and ...

  • Avoiding Sewer Fires with Vapor Space Organics Monitoring

    ABSTRACTRegulation of flammable gases released from wastewater discharges is facilitated by the use of the Vapor Space Organics test method. Such regulation can reduce the risk of a flash sewer fire, resulting damage and potential injury. The updated 2003 VSO process developed by Severn Trent Laboratories produced data that was equivalent to the 1990 VSO process developed and used by the ...

  • Stability and accuracy of CIRAS-2 Water Vapor (reference humidity): control option 1

    Summary Rapid large-scale fluctuations of carbon dioxide and water vapor, although unnatural and artificial in the plant world, are desirable attributes for gas exchange systems from a sampling efficiency standpoint. As PP Systems’ benchmark IRGA system for gas exchange and photosynthesis research, CIRAS-2 was designed for and expected to have exceptional response times to ...


    By PP Systems

  • Sensitivity analysis on parameters and processes affecting vapor intrusion risk

    A one‐dimensional numerical model was developed and used to identify the key processes controlling vapor intrusion risks by means of a sensitivity analysis. The model simulates the fate of a dissolved volatile organic compound present below the ventilated crawl space of a house. In contrast to the vast majority of previous studies, this model accounts for vertical variation of soil water ...


    By John Wiley & Sons, Ltd.

  • Using bioaugmentation to reduce risks and costs associated with vapor intrusion

    The risk driver for remedial action on many sites is potential vapor intrusion hazard. While mitigation of the vapors entering the structure can reduce the risk to an acceptable level, there are associated long-term monitoring, operation and maintenance costs. Bioremediation of the source of vapors can reduce the risk and eliminate long-term costs. The vapor intrusion risk is managed by ...


    By CL Solutions, LLC

  • Using Best Vapor Steam Cleaners for Carpets and Hard Surfaces Cleaning

    Vapor steam cleaner machines are popular cleaning systems for commercial cleaning tasks because of their versatile cleaning applications. They are powered by the cleaning capabilities of superheated water that cleans away almost all types of dirt, debris, and stubborn sedimentation. With the right technology, steam also acts as an effective disinfectant and keeps your office and residential space ...


    By Daimer Industries Inc.

  • Vapor-Phase Biofilters Show Promise for Treating High VOC Emissions

    Evaluating the Feasibility of Natural AttenuationUsing natural attenuation to remediate organic compounds in groundwater has gained popularity. In some cases, this process can reduce contaminant levels to below risk-based corrective action criteria or regulatory standards without implementing additional remedial action alternatives. However, it is often difficult to prove that natural ...


  • Daimer Ships Vapor Steam Cleaner For Maintaining Night Clubs

    Daimer Industries, Inc.®, the globe’s most famous American brand and supplier of robust steam cleaner systems, commercial car wash machines, top notch floor cleaning machines, and many more highly advanced systems and technologies, has commenced shipping the KleenJet® Supreme 3000CV to night clubs. The equipment is a commercial steam cleaner machine that offers terrific steam ...


    By Daimer Industries Inc.

  • Proposed plan offers tiering systems to determine preferred alternatives for vapor intrusion

    EPA Region 9 has issued for public comment a proposed plan to mitigate VI in commercial and residential buildings at the Middlefield Ellis Whisman (MEW) Study Area, which includes three NPL sites in Mountain View and Moffett Field, CA. Formerly used for industrial and semiconductor activities, this area has undergone extensive soil and groundwater remediation to remove TCE and other contaminants ...

  • Mitigation of marine biofouling on tubes of open rack vaporizers using electromagnetic fields

    This study quantitatively evaluates the antifouling action of the continuous physical treatment with electromagnetic fields (EMFs) of seawater used as heat exchanger fluid in an open rack vaporizer (ORV) pilot plant to reduce the growth of biofouling on external rib-tube surfaces. The results demonstrate that the biofilm adhered on the treated rib-tubes was reduced by 33% in thickness and by ...


    By IWA Publishing

  • Vapor-Phase Biofilters Show Promise for Treating High VOC Emissions.

    Evaluating the Feasibility of Natural AttenuationUsing natural attenuation to remediate organic compounds in groundwater has gained popularity. In some cases, this process can reduce contaminant levels to below risk-based corrective action criteria or regulatory standards without implementing additional remedial action alternatives. However, it is often difficult to prove that natural ...


  • Case study - Environmentally friendly vapor combustors, flares and incinerators

    Today’s industry requires innovative, cost competitive solutions to meet the ever growing and changing needs in the market. ABUTEC has developed a full line of “Environmentally Friendly” Vapor Combustors, Flares and Incinerators to meet these demands. The HTF (High Temperature Flare) and MTF (Medium Temperature Ground Flare) offer a flexible and scalable solution to clients in a ...


    By ABUTEC LLC

  • Gas vapor mitigation system utilizing evoh technology as solution to TCE contamination case study

    Project: El Centro Regional Medical Clinic Location: El Centre CA Products: Liquid Boot PLUS Gas Vapor Mitigation System with VI-20™ Geomembrane GeoVent™ Gas Venting System Background: Prior land use was for "El Centra Motors", an automobile dealership and service facility. There was some contamination in the soil ...


    By CETCO

  • Greenbelt Resources Selected to Manufacture First Commercial-scale, Vapor-capture System for EcoPAS

    Greenbelt Resources Corporation (OTC: GRCO) an innovator of sustainable energy production systems, today announced that it was selected by EcoPAS, a California company, to manufacture its PAS (Passive Alcohol System) – a revolutionary pollution control device that captures and transforms gaseous ethanol emissions into quality spirit products.  The ...

  • Dealing with Cavitation in Control Valves

    Cavitation consists of rapid vaporization and condensation within a liquid. When local pressure falls to vapor pressure (approximately 0.25 psi / 0.018 bar absolute for cold water), vapor bubbles are formed and when these bubbles travel to an area of higher pressure, the bubbles collapse with phenomenal force and great localized stress. It is the violent collapse of these vapor bubbles near valve ...


    By IWA Publishing

  • How the largest oil companies in Romania protect the environment using vapor recovery systems

    Romania's alignment to the European Directive 94/63/EC relating to control of the volatile organic compounds emissions resulting from gasoline storage and distribution, has been a challenge and an opportunity for the Romanian industrial automation and process control companies to expand their activities within the downstream branches of the main players on the petroleum products market. At ...


    By Syscom 18

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