contaminated waste Articles

  • Contaminants in waste foundry sand and its leachate

    The environmental characteristics of Waste Foundry Sands (WFS), including chemicals in WFS and its leachate, are essential in understanding the environmental impact, rational disposal and potential development of beneficial applications of this solid industrial waste. This paper presents an assessment of broad-spectrum chemicals (metallic, non-metallic and organic chemicals) in aspects of their ...


    By Inderscience Publishers

  • Geostatistical Sampling Optimization and Waste Characterization of Contaminated Premises

    Abstract This methodological study presents a geostatistical approach suitable for radiological evaluation in nuclear premises. By modelling the spatial continuity of activities, geostatistics provide sound methods to estimate and map radiological activities, together with their uncertainty. The main geostatistical principles are first recalled and illustrated on a real premise ...


    By Geovariances

  • Geostatistical Methodology For Waste Optimization Of Contaminated Premises

    Summary At the end of process equipment dismantling, the complete decontamination of nuclear facilities requires the radiological assessment of residual activity levels of building structures. As stated by the IAEA: “Segregation and characterization of contaminated materials are the key elements of waste minimization”. From this point of view, the set up of an ...


    By Geovariances

  • Waste water plant struggles with contamination case study

    A plant in the southwest US commissioning a wastewater plant utilizing proprietary technology for the removal of benzene, toluene, and xylene, or BTX, was experiencing challenges with throughput and elevated operational costs due to the presence of particulate contaminants. The plant takes the wastewater and processes it, removing the BTX prior to being fed to the conventional wastewater plant. ...

  • Case study – TEX contamination

    A UST tank storing waste solvents, paints, stains, and lacquers leaked TEX into the surrounding soils and groundwater. LNAPL (free-product) was documented under the building prior to treatment. NFA granted ...

  • 4 Types of Contaminants in Water

    The EPA says that there are 4 type of water contaminants: physical, chemical, radiological, and biological. Its definition includes anything that is not an actual water molecule. That means that naturally occurring things like sediment and water weeds are considered contaminants along with things like oil and uranium. Chances are good that the type of contaminants your company needs to keep out ...

  • Groundwater and contaminant transport modelling

    Client: Nuclear Industry Location: Cumbria, UK Services: Radioactive waste consultancy, hydrogeological risk assessment Issues: Potential risk to groundwater, environment and human health. System conceptualisation Summary: ESI developed a FEFLOW finite element model of the groundwater system in the ...


    By ESI Consulting

  • Innovations in the Remediation of Contaminated Sites

      Discussion of the EPA publication completed North American Innovative Technology Demonstration Projects; share the information from this new document which is now available in an online. Mention some of the ongoing and completed field demonstrations of innovative remediation technologies sponsored by EPA and other government agencies such as DOD, NPS, USFS, and BIA. The remediation ...


  • Bioremediating Explosives Contaminated Soil

    From the beginning of World War II until the 1970s, the site that is now the Naval Surface Warfare Center in Crane, Indiana (NSWC-Crane) was the home of a major bomb manufacturing operation. Explosive compounds such as TNT, Royal Demolition Explosives (RDX) and Her Majesty’s Explosive (HMX) were handled loose and drifted through air vents. Often, the material settled on the roofs of buildings, ...


    By BioCycle Magazine

  • Remediating Unforeseen Sewer Contaminants

    Getting the PCBs out Who: Jersey City, N.J., Municipal Utilities Authority Tons of clean sediment removed: 4,469 Tons of PCB-contaminated sediment: 2,502 Consulting engineer: Boswell Engineering: South Hackensack, N.J. Environmental maintenance contractor: National Water Main ...

  • Studies on Biofiltration of Contaminant Mixtures

    Most gaseous emissions from waste water treatment plants, industrial operations, and solids handling facilities, consist of contaminant mixtures rather than pure chemicals. In the literature, several studies have been conducted on biological treatment of gaseous emissions using either naturally bioactive media (soil, peat, compost, etc.) in biofilters or synthetic support media in biotrickling ...


    By PRD Tech, Inc.

  • Liberating contaminants for easy recovery

    The number one challenge associated with most site remediation designs and methodologies is that 90-95 per cent of all environmental contaminants are present in an adsorbed phase onto soil and bedrock surfaces within both saturated and unsaturated zones. Contaminants, including hydrocarbons (LNAPL), chlorinates (DNAPL) and heavy metals, are sorbed onto the substrates and so have reduced mobility ...


    By Ivey International Inc.

  • Process-generated contaminants

    Overview: There is not currently a formal and universally recognised definition of a process-generated substance. Process-generated contaminants can be generated as emissions from combustion processes, abrasion and/or other processes that physically or chemically degrade or otherwise modify the starting material(s), e.g. degradation/composting of organic materials. Such ...

  • Several waste gas streams: Highly contaminated oxygen-free waste gas, and medium waste gas stream - Case Study

    Example: Chemical industry Similar tasks: Petrochemical and pharmaceutical industries A producer of synthetic rubber creates a medium waste gas as well as a highly contaminated oxygen-free waste gas which contains primarily low hydrocarbons. The main waste gas stream is purified in a regenerative thermal oxidiser (RTO), while the oxygen-free waste gas passes through ...

  • Composition and Contaminant Loads of Residual Household Waste Part III: Physico-Chemical Properties and Contaminant Concentrations

    Abstract. Physico-chemical properties of residual waste are key factors for disposal standards. Reliable input data for treatment plants (MSWI) need to consider the heterogeneity and variability of waste composition. This requires thoroughly designed sampling schemes, a consistent separation of bulk waste into uniform fractions, and adequate methods for sample preparation and analysis. The ...


    By Oracle

  • Environmental contamination from electronic waste recycling at Guiyu, southeast China

    The disposal, recycling, and part salvaging of discarded electronic devices such as computers, printers, televisions, and toys are now creating a new set of waste problems. This study is aimed at identifying the sources and quantifying the pollution levels generated from electronic waste (e-waste) activities at Guiyu, Guangdong Province, China, and their potential impacts on the environment and ...


    By Springer

  • Heavy metal contamination from electronic waste recycling at Guiyu, southeastern China

    This study evaluated the effect of electronic waste (e-waste) recycling activities at a regional center, Guiyu, Guangdong, China on heavy metal pollution in the surrounding waterway system. Surface water and sediment collected from the Lianjiang River and its tributaries were analyzed for concentrations of Cu, Pb, Ni, Cd, Hg, and As. Spatially, heavy metals in water and sediment samples decreased ...

  • Composting case study: Kurtz Bros tackles yard waste contamination

    Kurtz bros., INc. (Columbus, OH) supplies both consumers and landscape contractors with high-quality mulch, compost, soil amendments and topsoil. The company operates several organic recycling facilities throughout the state of Ohio spanning from Columbus (the state’s largest organic recycling facility) to Cleveland. Its local yard waste facilities accept everything from leaves and grass ...


    By Waste Advantage Magazine

  • Geotube Dewatering Technology Provides Clean-up of Contaminated Waste - Case Study

    Contaminated sites continue to use Geotube® containers for PCBs, Metals, BTEX, PAHs, Arsenics, etc via pumping or dredging - mechanical and hydraulic methods. TenCate develops and produces materials that function to increase performance, reduce costs and deliver measurable results by working with our customers to provide advanced solutions. A unique high volume, low cost dewatering system ...

  • Remediation of hydrocarbon contaminants from oil lagoons and refinery waste - case study

    In 2007 econ delivered an indirectly heated thermal desorption plant to a client in Kuwait. The plant is de-signed to treat various types of waste with hydrocarbon contaminant content. In particular refinery waste, oil lagoons and down hole drilling waste. The aim is to recover the waste hydrocarbons from the soil/sand and remediate the lagoons of their contaminants.  Due to the natural ...


    By econ industries GmbH

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