biofilter media Articles

  • Review of Biofiltration - Effect of Support Media on Biofilter Performance

    Technologies for removal of hazardous pollutants from air have gained increased importance following the 1990 Clean Air Act Amendments (CAAA). Biofiltration is an emerging and attractive technology for the removal of volatile organic chemicals (VOCs) present at low concentrations in air. Traditional VOC removal technologies involve physical or chemical processes such as adsorption, condensation, ...


    By PRD Tech, Inc.

  • A synthetic biofilter media for ammonia (NH3) removal

    In this work, a patented biofilter media is used in treating air contaminated with ammonia (NH3). The data shows up to 200 ppm of NH3 can be removed with over 93% removal efficiency at 30 s Empty Bed Residence Time (EBRT). At the start–up conditions, the results also indicated that the humidifier can be ...


    By Inderscience Publishers

  • Longer Life For Biofilters

    Biofilters are the odor control system of choice at composting facilities. Despite similar capital costs, the biofilters are generally less costly to operate than chemical scrubbers. The key to keeping operating costs in check, however, is to get the maximum use out of the biofilter media, thus avoiding the time and money needed to do media replacements. Allen Boyette, senior engineer and manager ...


    By BioCycle Magazine

  • Performance of a biofilter system with agave fiber filter media for municipal wastewater treatment

    Agave plants grow in semi-arid regions and are used for mescal production. However, agave fiber by-products are considered waste materials. Thus, we tested agave fiber as a filter media and biofilm material carrier for removing pollutants from municipal wastewater. Three laboratory-scale biofiltration reactors were used in two trials with five hydraulic loading rates (HLRs = 0.27, 0.54, ...


    By IWA Publishing

  • Biofilter Applications in the Coatings Industry.

    Soaring energy costs and the high cost of ‘end-of-pipe’ pollution control equipment has caused companies and regulatory agencies to re-evaluate ‘unconventional’ means of achieving VOC and HAP emissions control. The coatings industry is an excellent candidate for alternative, unconventional controls, as VOC and HAP reductions have not been as strident as has been the case in many other industries. ...


  • Pilot-scale compost media biofilter treatment of volatile organic compounds

    The compost media biofilter is one of the most important biological processes applied to treat waste gases. Research on a pilot-scale compost media biofilter treatment of volatile organic compounds (VOCs) was performed. The volume of biofilter media was 4.3 m3 and the biofilter operated for 57 days. Fluctuation of water content in the biofilter media was investigated. With continuous switching of ...


    By BioCycle Magazine

  • Co-optimisation of phosphorus and nitrogen removal in stormwater biofilters: the role of filter media, vegetation and saturated zone

    Biofilters have been shown to effectively treat stormwater and achieve nutrient load reduction targets. However, effluent concentrations of nitrogen and phosphorus typically exceed environmental targets for receiving water protection. This study investigates the role of filter media, vegetation and a saturated zone (SZ) in achieving co-optimised nitrogen and phosphorus removal in biofilters. ...


    By IWA Publishing

  • Pilot-Scale Biofilter Test for Treating Zimpro Odors

    The thermal sludge conditioning process of U.S. Filter/Zimpro Corporation, Rothschild, Wisconsin (Zimpro process) is primarily used to improve dewatering characteristics of the waste sludge. The process entails a partial breakdown through oxidation and hydrolysis of complex, high molecular weight organic compounds, such as, proteins, fibers, carbohydrates, and fats. The partial breakdown of ...


    By PRD Tech, Inc.

  • 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

  • Footprints and Capital Costs Reduction for Onsite Wastewater Treatment Systems - a Novel Dual Media Recirculating Biofilters

     ABSTRACT The purpose of this study was to develop a dual media filter bed design for recirculating biofilters (RBFs) for achieving high level treatment to meet the strict wastewater discharge regulations. Five types of filter media were applied in the bench scale RBFs, including two single media (crushed glass or CG, geotextile or GT), and three dual media with CG and GT at different ...

  • Application of light-weight filtration media in an anoxic biofilter for nitrate removal from micro-polluted surface water

    The research investigated nitrate removal from micro-polluted surface water by the single-stage process of anoxic biofilter using light-weight polystyrene beads as filtration media. In this study, sodium acetate was used as an external carbon source and the nitrate removal efficiency under different regimes of hydraulic loading rate (HLR), water temperature, and C/N ratio was studied. In ...


    By IWA Publishing

  • Synthetic Media Biofilter Eliminates Hydrogen Sulphide and Other Reduced Sulphur Compound Odours

    Abstract Innovative synthetic biofilter media has revolutionized biofilter technology for removal of hydrogen sulphide (H:S) odours from several wastewater treatment facilities across North America. The major drawback of biofilter technology in the past was use of organic wood-based media, which had several problems including high-pressure drop, frequent media replacement, lack of ...


    By Biorem Technologies Inc.

  • Mesquite wood chips (Prosopis) as filter media in a biofilter system for municipal wastewater treatment

    The biofiltration system over organic bed (BFOB) uses organic filter material (OFM) to treat municipal wastewater (MWW). This study evaluated the performance of a BFOB system employing mesquite wood chips (Prosopis) as OFM. It also evaluated the effect of hydraulic loading rates (HLRs) in order to achieve the operational parameters required to remove organic matter, suspended material, and ...


    By IWA Publishing

  • A Comparison of an Organic Biofilter and an Inorganic Biofilter for the treatment of Residual odors emanating from a Biosolids De-Watering facility

    The following paper is a comparison of an organic media biofilter and a synthetic media biofilter for the treatment of residual odors emanating from the operation of a biosolids dewatering and truck loading system at the City of Toronto's Ashbridges Bay Treatment Plant. The system compared was an in-ground, header/lateral system operated in a forced draft, up flow, open top configuration. The ...


    By Biorem Technologies Inc.

  • Effect of oxygen deprivation on treatment processes in a full-scale drinking water biofilter

    Dissolved oxygen is critical for proper operation of waterworks that utilize anaerobic groundwater and rely on biofilters to remove iron, manganese and ammonium. In these biofilters, planned or inadvertent oxygen deprivation may occur for a variety of reasons. The water quality effects of oxygen deprivation on the function of drinking water biofilters, however, have not previously been reported. ...


    By IWA Publishing

  • Performance evaluation of an aerobic biofilter with high organics containing synthetic wastewater

    The organics removal performance of a lab-scale aerobic biofilter of volume 0.6 L was studied using synthetic wastewater and waste automobile tyre-tube beads as media. The column study was performed under Chemical Oxygen Demand (COD) in the range of 500-1500 mg/L at an empty bed contact time (EBCT) of 2 h. The treatability constant at 27°C was found to be 41.963. A maximum COD removal efficiency ...


    By Inderscience Publishers

  • The role of backwash in start-up of full-scale drinking water biofilters

    The purpose of backwashing during the start-up period of rapid biofilters at drinking water treatment plants differs significantly from the purpose of backwashing during normal operation. During start-up, finished water quality is secondary, detachment of microorganisms must be minimized, dust present in the original filter media must be removed and inherent inoculation of the biofilter with ...


    By IWA Publishing

  • Evaluation of biofilter performance to remove dissolved arsenic: Wood Cadillac

    The Wood Cadillac mining site, in north-western Quebec, is an important source of arsenic contamination. The arsenic-rich effluent is treated through a reductive biofilter, which allows arsenic to precipitate as a sulphide (likely As2S3). The top-fed biofilter, built at the end of 1999, is 50 m x 57 m by 1 m thick. The reducing conditions are provided by the decomposition of yellow birch bark ...


    By Hydrogeochem Env. Inc.

  • Results of Full-Scale Installation and Comparison of Biofilter Operation (PDF)

    ABSTRACTBio·Reaction Industries LLC. (BRI) has completed a two-phase project for the design, testing and installation of a biofiltration unit to degrade volatile organic compounds (VOCs) including benzene, toluene, xylenes, ethyl benzene, hexanes, MEK, MIBK, acetone and certain alcohols to reduce emissions from a paint manufacturing facility in Eugene, Oregon. The initial biofilter installed was ...


  • Selection of Bioreactor Media for Odor Control

    The support media is one of the most critical elements of a biofiltration system. In this chapter, biofilters and biotrickling filters will be referred to as “biofilter”, and this distinction will be discussed later in this chapter. The support media’s main function is to provide contact between the gas-phase contaminants and active microbial cultures either immobilized within and/or attached as ...


    By PRD Tech, Inc.

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