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organic waste management system Applications

  • Wastewater treatment solutions for anaerobic sludge digestion sector

    Anaerobic digestion is a series of processes in which microorganisms break down biodegradable material in the absence of oxygen, used for industrial or domestic purposes to manage waste and/or to release energy. It is widely used as part of the process to treat wastewater, like Upflow Anaerobic Sludge Blanket (UASB) reactors. As part of an integrated waste management system, anaerobic digestion reduces the emission of landfill gas into the atmosphere. Anaerobic digestion is widely used as a renewable energy source because the process produces a methane and carbon dioxide rich biogas suitable for energy production, helping to replace fossil fuels. The nutrient-rich digestate which is also produced can be used as fertilizer. The digestion process begins with bacterial hydrolysis of the input materials in order to break down insoluble organic polymers such as carbohydrates and make them available for other bacteria. Acidogenic bacteria then convert the sugars and amino acids into carbon dioxide, hydrogen, ammonia, and organic acids. Acetogenic bacteria then convert these resulting organic acids into acetic acid, along with additional ammonia, hydrogen, and carbon dioxide. Finally, methanogens convert these products to methane and carbon dioxide.

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

  • 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).

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