solvent collection system Articles

  • Chlorinated solvents: methylene chloride and TCE

    Introduction This paper presents the results of a scaled and phased approach to source remediation of high concentrations of recalcitrant chlorinated solvent compounds via soil vapor extraction (SVE) and vapor treatment at a Site in Southern California. Phase I began with refrigerated condensation (C3) in order to achieve high mass removal rates to reduce lifecycle costs and time ...

  • Bioaugmentation to Treat Chlorinated Solvents in Fractured Bedrock

    ABSTRACT: An in situ bioremediation pilot study was performed at a former industrial site in New Jersey where groundwater has been impacted by historical releases of chlorinated solvents. The target area for treatment is a fractured, intermediate bedrock zone. The remedial objective at the Site is to treat the groundwater while minimizing the impact of the remedial system on the re-development of ...


    By EOS Remediation, LLC

  • Principles and practices of enhanced anaerobic bioremediation of chlorinated solvents

    PROBLEM STATEMENTThe Department of Defense (DoD) has identified hundreds of sites where groundwater is contaminated with chlorinated solvents; these represent one of the DoD’s largest remediation liabilities. In addition to their use in many industrial processes, chlorinated solvents have historically been used for cleaning and degreasing such diverse products as aircraft engines, automobile ...


    By RNAS Remediation Products

  • Reduction in Solvents for Cleaning: Amcor Packaging (Australia)

    Background Amcor Cartons, a manufacturer of folding cartons and paperboard packaging is a 13 million dollar operation employing 60 staff. In keeping with Amcor Cartons’s commitment to respond to customer needs through the application of the highest technology, advantage was taken of the latest available technology when deciding to upgrade their printing press. After installing a new ...


  • Solvent choices for infrared testing of oil and grease in water

    Water is a very strong absorber in the mi d infrared (I R) regio n where o il is measured. We see the effect of infrared absorbance when a cold bucket of water left in the sun is quite warm by afternoon due to the absorption of infrared energy as heat. When measuring part per million (ppm) oil levels with mid IR, the water absorbs so much of the infrared energy that the signal becomes saturated ...


    By Spectro Scientific

  • Passively Enhanced In-Situ Biodegradation of Chlorinated Solvents

    Harding Lawson Associates (HLA) conducted a field demonstration to evaluate in situ enhanced anaerobic biodegradation of chlorinated solvents using Hydrogen Release Compound (HRC). The technology is designed to enhance the natural biodegradation process for a more rapid and complete degradation of the organic contaminants to non-toxic compounds (e.g., ethylene). This paper presents the results ...


    By REGENESIS

  • Solvent Recovery in Flexographic Printing: Fildes Pty Ltd

     Background Fildes Pty Ltd is a long established, family owned company, located in Sandringham, Victoria. Fildes manufacture quality labels, bags and retail packaging. The company currently supplies 90 per cent of the Australian pharmacy market, as well as packaging for a wide range of high profile retailers. The Process As part of the ...


  • Reduction of Solvent Use in Cleaning of Printing Screens: Cutler Brands

     The installation of new cleaning equipment at Cutler Brands printing works in Adelaide, South Australia, has resulted in a 40 percent reduction in cleaning solvent used and an annual saving of almost $165,000. Not only was the investment of $45,000 recouped in 4 months through savings and increased productivity, but exposure of employees to hazardous fumes and chemicals substantially ...


  • Technical protocol for evaluating natural attenuation of chlorinated solvents in ground water

    The U.S. Environmental Protection Agency is charged by Congress with protecting the Nation’s land, air, and water resources. Under a mandate of national environmental laws, the Agency strives to formulate and implement actions leading to a compatible balance between human activities and the ability of natural systems to support and nurture life. To meet these mandates, EPA’s research ...


    By RNAS Remediation Products

  • Food Processing: Tower Scrubber Reduces Pollutants Recovering Reusable Solvents Case Study

    FMC adapted a ‘good neighbor’ policy when it installed a specialized, countercurrent packed tower scrubber into its seaweed extraction process system. The tower recovers isopropyl alcohol from the company’s process, thereby reducing pollutant emissions at the Rockland, Maine facility. The unit rids of the need for additional pollution control instrumentation and eliminates ...


    By CR Clean Air Group, LLC

  • Multiyear Temporal Changes in Chlorinated Solvent Concentrations at 23 Monitored Natural Attenuation Sites

    Introduction There is an increasing interest in predicting how long it will take natural attenuation processes to remediate groundwater plumes. The U.S Environmental Protection Agency (USEPA) Monitored Natural Attenuation (MNA) Directive (USEPA 1999) specifies that MNA relies on “ . . . a variety of physical, chemical, or biological processes that, under favorable conditions, act without human ...


  • System for bioremediation of effluents

    Executive Summary The remediation process of commercial, municipal, industrial and agricultural wastewaters has employed combinations of sulfuric acid, caustic, petroleum based solvents and synthetic emulsifiers, which are either toxic or generally non-biodegradable. An alternate method using naturally occurring microorganisms has been utilized for many years to facilitate the remediation ...


    By NCH Corporation

  • Case study - Oxidizer system optimization

    OXIDIZER SERVICE SERIES: PART 4 As promised, this is the fourth installment of Anguil's Oxidizer Service Series. If you have read through the first three parts, this can be seen as a capstone of those efforts. Having a strong oxidizer service plan, backed up with recommended spare parts and all of the proper documentation will not only improve your system performance but also allow you to focus ...

  • How to Optimize Oxidation Systems for Efficient Operation

    Emphasis on air management within converting-process dryers and ovens is critical to the design of pollution-control systems for treating exhausts containing VOCs (volatile organic compounds). Efficient air management allows the pollution-control system to be optimally sized to meet the needs of the process. Good process control further defines the emission stream by avoiding the need for large ...


    By Babcock & Wilcox MEGTEC

  • Case study - Coater replaces old oxidizers With energy efficient systems

    Overview Emission control and the operating costs associated with meeting environmental regulations were nothing new for the Coated Products Division of Brady Corp. The company has been manufacturing coated films for nearly 60 years, demonstrating over that time a commitment to pollution prevention and emission reduction programs. But these considerations were magnified ...

  • Detection of polychlorinated biphenyls (PCBs) in concrete using the ensys test system

    MATRIX: Concrete ANALYTES: Polychlorinated biphenyls (PCBs) RANGE OF DETECTION: Aroclor 1254: 0.5 ppm Aroclor 1260: 0.5 ppm Aroclor 1248: 1.0 ppm Aroclor 1242: 2.0 ppm Aroclor 1232: 4.0 ppm Aroclor 1016: 4.0 ppm MATERIALS: Ensys PCB in Soil Test Kit. Ensys PCB Sample Extraction Kit. Reagents: table salt ...


  • 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 ...

  • Detection of polychlorinated biphenyls (PCBs) in concrete using the dtech test system

    MATRIX: Concrete ANALYTES: Polychlorinated biphenyls (PCBs) RANGE OF DETECTION: DTECHTOR: 500 ppb to 25 ppm (as aroclor 1254). Color Card: 1 ppm to 25 ppm (as aroclor 1254) MATERIALS: DTECH PCB Test Kit. DTECH PCB Sample Extraction Kit. Reagents: table salt (sodium chloride) or salt packets used by restaurants ...


  • Wind-driven SVE system extracts VOCs from landfill

    An innovative soil vapor extraction (SVE) system has operated at the former Ferdula Landfill site in Frankfort, NY, for the past 10 years. The system relies on wind-driven vacuum processes rather than electrically powered air blowers to extract volatile organic compounds (VOCs) from the landfill. After a two-year trial beginning in 1998, the New York State Department of Environmental Conservation ...

  • Industrial Wastewater Treatment: Priority pollutant behaviour in on-site treatment systems for industrial wastewaters

    The majority of wastewaters deriving from the chemical industry consist of aqueous discharges produced during the physico-chemical processing of synthetic mixtures involving operations such as filtration, centrifugation, extraction and/or distillation. The wastewater streams, referred to as ‘process waters’ can include mother liquors, washing waters from the purification of products, ...


    By IWA Publishing

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