biofilter system Articles

  • 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

  • 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. ...


  • 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 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.

  • 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

  • High VOC Loadings in Biofilters - Petroleum and Industrial Applications

    ABSTRACTMore cost effective alternate technologies are needed to meet the demands of existing and upcoming Federal air regulations. Bio-Reaction Industries, Inc. (BRI) has developed a patented, modular, high-rate, vapor-phase biofilter that has provided such a solution for a major oil company for the past four years. This compact system has adsorbed and digested high VOC surge concentrations ...


  • A High Performance Biofilter for Toluene Emission Control

    A high performance biofilter was designed at the Université de Sherbrooke in Québec. This laboratory-scale biofilter was used for the treatment of gas streams polluted with toluene present in low or high concentration. A maximum elimination capacity of 135 g.m -3 .h -1 was achieved, and no clogging of the biofilter was observed during the experimental period. The performance of the cleaning ...


  • Biofilm Growth-Percolation Models and Channeling in Biofilter Clogging

    Biomass accumulation is a load-limiting factor in the operation of biofilters used for air pollution control. As the biofilm thickens, portions at the base are no longer exposed to contaminants and oxygen and, thus, provide no treatment. Smaller pores are filled with biomass so that air no longer flows into them. As airflow paths are restricted, air may be prevented from reaching some pores even ...

  • 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.

  • Numerical modeling of nitrogen removal processes in biofilters with simultaneous nitritation and anammox

    This study developed a simple numerical model for nitrogen removal in biofilters, which was designed to enhance simultaneous nitritation and anaerobic ammonium oxidation (anammox). It is the first attempt to simulate anammox together with two-step nitrification in natural treatment systems, which may have different kinetic parameters and temperature effects from conventional bioreactors. ...


    By IWA Publishing

  • Biodegradation of multiple nitrosamines by the Bacillus species LT1C in drinking water biofilters

    To better clarify the biodegradation mechanism of nitrosamines at low concentrations and characterize the nitrosamine-reducing strains isolated from biological activated carbon (BAC) filters in drinking water treatment plants. The nitrosamine-reducing bacterial culture Bacillus species LT1C was cultivated, isolated and purified from a pilot filter system using BAC, and was then applied to ...


    By IWA Publishing

  • UrbanGreen BioFilter Provides Cost-Effective Solution for Public Schools

    Low Impact Development Solution for Salem-Keizer Public Schools Salem, Oregon - In November of 2008, voters within the Salem-Keizer Public School district passed a $242.1 million school construction ...

  • Vapor-Phase Biofilters Show Promise for Treating High VOC Emissions.

    Evaluating the Feasibility of Natural AttenuationUsing natural attenuation to remediate organic compounds in groundwater has gained popularity. In some cases, this process can reduce contaminant levels to below risk-based corrective action criteria or regulatory standards without implementing additional remedial action alternatives. However, it is often difficult to prove that natural ...


  • High VOC Loadings in Biofilters - Petroleum and Industrial Applications (PDF)

    More cost effective alternate technologies are needed to meet the demands of existing and upcoming Federal air regulations. Bio-Reaction Industries, Inc. (BRI) has developed a patented, modular, high-rate, vapor-phase biofilter that has provided such a solution for a major oil company for the past four years. This compact system has adsorbed and digested high VOC surge concentrations (over 90,000 ...


  • 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 ...


  • Biotreatment of waste gas containing pyridine in a novel rotating rope biofilter

    A novel Rotating Rope Biofilter (RRB) has been developed especially for the treatment of Volatile Organic Compounds (VOCs) at higher loadings and characterised by high volatility along with high water solubility. The RRB provides a higher interfacial area (per unit reactor liquid volume) along with high oxygen mass transfer rate, greater microbial culture stability, and consequently higher ...


    By Inderscience Publishers

  • Evaluation of the absorption bed`s efficiency under the Ecoflo Biofilter

    The Ecoflo Biofilter is a wastewater treatment system designed for the sanitary drainage of decentralized dwellings. Preceded by a scptic tank, the chain of treatment comprises a biofiltration unit and a polishing field allowing the treated wastewater to be absorbed by the rcceptor ground. The Ecoflo Biofilter performances have been evaluated by numerous organizations (MDDEP, BNQ, NSF, CSTB, ...


    By Premier Tech Aqua

  • High performance of nitrogen and phosphorus removal in an electrolysis-integrated biofilter

    A novel electrolysis-integrated biofilter system was developed in this study to evaluate the intensified removal of nitrogen and phosphorus from contaminated water. Two laboratory-scale biofilter systems were established, one with electrolysis (E-BF) and one without electrolysis (BF) as control. The dynamics of intensified nitrogen and phosphorus removal and the changes of inflow and outflow ...


    By IWA Publishing

  • Dimensioning of bioscrubber/biofilter-combinations for odour treatment at compost facilities

    Composting of organic waste has been developed rapidly in Germany in the last years. While Fricke et al. (1992) counted 88 running or planned compost facilities in 1991, the number increased up to about 550 in 1998 with a total capacity of 6.5 Mio t/a of biowaste (Wiemer and Kern, 1998). So, composting is a wide spread, established process in waste management, producing an important product for ...


    By ORBIT e.V.

  • Vapor-Phase Biofilters Show Promise for Treating High VOC Emissions

    Evaluating the Feasibility of Natural AttenuationUsing natural attenuation to remediate organic compounds in groundwater has gained popularity. In some cases, this process can reduce contaminant levels to below risk-based corrective action criteria or regulatory standards without implementing additional remedial action alternatives. However, it is often difficult to prove that natural ...


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