passive biofilter Articles

  • Mitigating methane emissions from passive landfill vents: a viable option for older closed landfills

    This study investigated the use of biofilters to reduce methane emissions from landfill passive gas vents. Two biofilter designs were evaluated. The two filter designs achieved similar percent oxidation averages. The radial biofilter design, however, obtained a much higher methane oxidation rate. The higher surface area of flow in the radial biofilters decreased the methane influx leading to ...


    By Inderscience Publishers

  • A laboratory-scale comparison of compost and sand—compost—perlite as methane-oxidizing biofilter media

    Municipal solid waste landfills produce methane, a potent greenhouse gas. A treatment approach is to passively vent landfill gas through a methane-oxidizing biofilter medium, a porous substrate that facilitates the growth of methanotrophic bacteria. Two substrates, compost and a sand—compost—perlite (SCP) mixture, were evaluated in a laboratory-scale experiment for their suitability as biofilter ...


    By SAGE Publications

  • Laboratory study on factors influencing nitrogen removal in marble chip biofilters incorporating nitritation and anammox

    It remains challenging to integrate nitritation and anammox in ecologically engineered treatment systems such as passive biofilters that are packed with natural materials and have low energy inputs. This study explored the factors influencing nitritation-anammox through parallel operation of two laboratory-scale biofilters packed with large and small marble chips respectively. Clean marble chips ...


    By IWA Publishing

  • Cocopeat Biofiltration Systems

    A cocopeat biofilter system is a low-cost and low-maintenance on-site wastewater treatment solution that is modular in design and applicable for residential, institutional and commercial establishments. The system can be designed to passively treat septic tank effluent to meet secondary treatment levels. For residential use, the biofilter unit consists of a relatively small ...


    By IWA Publishing

  • Actively aerated methanobiofilters to control methane emissions from landfills

    Methane (CH4) capture at sanitary landfills for energy recovery is capable of reducing the impact of CH4 on the global atmospheric carbon budget. However, gas capture may only be viable where gas quantities are high enough to warrant economical energy production. Considering the potential global warming impacts, there is a need to ...


    By Inderscience Publishers

  • Onsite wastewater nitrogen reduction with expanded media and elemental sulfur biofiltration

    A passive biofiltration process has been developed to enhance nitrogen removal from onsite sanitation water. The system employs an initial unsaturated vertical flow biofilter with expanded clay media (nitrification), followed in series by a horizontal saturated biofilter for denitrification containing elemental sulfur media as electron donor. A small-scale prototype was operated continuously over ...


    By IWA Publishing

  • Sustainable, Low-maintenance Disinfection for Onsite Systems

    Most of the regulations applicable for onsite wastewater treatment system are based on the use of native soil for effluent dispersal. However, there are more and more situations where dispersal of effluent in native soil is impossible: repairs of existing systems on undersized lots for implementation of required dispersal fields: sites located in soils having low permeability: or where the ...


    By Premier Tech Aqua

  • Ecoflo ® Cluster Treatment System - Municipality of St-Joseph-de-Kamouraska, QC, Canada

    Customer: Municipality of Saint-Joseph-de-Kamouraska County of Kamouraska, QC, Canada Located approximately 180 kilometres East of Quebec City, and 20 km (12.5 mi) from Rivière-du-Loup, the municipality of Saint-Joseph-de-Kamouraska is part of the Bas-Saint-Laurent Administrative region. Founded in 1922, its economy is based primarily on agriculture and lumber. This peaceful rural ...


    By Premier Tech Aqua

  • A new Technology for Composting: Suction Aeration for Opening Composting Works

    Cost-efficient solution for smell emission reduction The enormous waste quantities that are produced day by day are one of the most difficult problems for the economy as such, for cities and communities and for private households. Storage capacities for waste are scarce everywhere. Therefore solutions of all kinds that reduce waste quantities or recycle waste materials to be reused in the ...

  • Indoor air quality can be improved by employing plants as walls

    The practice of planting ivy to climb up the walls of buildings has existed for centuries. Now, the trend towards sustainability and green building practices can lead to the development and use of living walls as a means of filtering and improving a building’s indoor air quality. Green walls are a living, breathing, regenerating type of cladding that can be as simple as a living art installation ...


    By Actual Media

  • An Infrastructure Grows · Decentralized Treatment and Recycling Domestic Wastewater

    THE TERM, “decentralized waste-water management,” refers to the process of treating and discharging treated wastewater in the local vicinity where it is generated. Decentralized systems typically use the soil as the final receptor of the treated wastewater instead of discharging to surface waters, which are generally the receptors of treated wastewater from larger centralized treatment plants. ...


  • Piedmont Biofuels Spawns Ecoindustrial Park

    DRIVE to the end of Lorax Lane in Pittsboro, North Carolina, and you will discover a slice of the future of America. In one location, you can find - among other things -a biofuels station, a sustainable farm, a hydroponic greenhouse, a vermicomposting operation, an organic food distributor, a natural bug repellant manufacturer and a bookkeeper. And it all started with Piedmont Biofuels Industrial ...


    By BioCycle Magazine

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you