biofiltration Articles
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Ashbridges Bay Sewage Treatment Plant, Toronto, Ontario - Case Study
ABOUT THE PROJECT Biorem has successfully demonstrated its high rate odour control system for biosolids exhausts at Ashbridges Bay sewage treatment plant in Toronto, Ontario. The demonstration used XLD™, a biofiltration media engineered specifically for biosolids odours. The system has achieved 95% odour removal in less than 20-s Empty Bed Residence Time (EBRT) despite high concentration ...
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Engineered biofiltration for ultrafiltration fouling mitigation and disinfection by-product precursor control
A pilot-scale study was conducted to evaluate the impact of several biofiltration enhancement strategies in terms of organic removal to reduce disinfection by-product (DBP) formation potential and mitigate ultrafiltration (UF) fouling. Strategies included nutrient addition (nitrogen and phosphorus) to optimize metabolic degradation of organics, use of hydrogen peroxide (H2O2, peroxide) to ...
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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, ...
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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 ...
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High Rate Biological Odour Control System - Case Study
About the Project Biorem has conducted a successful demonstration of high rate odour control at Preston Wastewater Treatment Plant in Cambridge, Ontario over the last three years. The system treats exhausts from primary clarifier and intermediate pump station. A combination of biotrickling filtration (BTF) and biofiltration (BF) processes was used in a novel horizontal flow configuration. XLD, a ...
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High Rate Biological Odour Control Demonstration for Biosolids Exhausts
Abstract Biorem has successfully demonstrated its high rate odour control system for biosolids exhausts at Ashbridges Bay sewage treatment plant in Toronto, Ontario. The demonstration used XLD™, a biofiltration media engineered specifically for biosolids odours. The system has achieved 95% odour removal in less than 20-s Empty Bed Residence Time (EBRT) despite high concentration of organic ...
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Biofiltration Treatment of α-Pinene
This paper provides an overview of air biofiltration with experimental data on the performance of a synthetic media biofilter system. It is shown that use of high surface area per unit volume structured media results in higher contaminant treatment rates per unit biofilter volume. It is shown that use of specially designed synthetic media allows effective control of biomass buildup by continuous ...
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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 ...
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Influence of nutrient supplementation on DOC removal in drinking water biofilters
Analysis of the impacts of nitrogen, phosphorus and potassium supplementation on biofilter performance for organic carbon removal was studied on laboratory-scale biofilter columns. Three dual media biofilter columns were fed with synthetic raw water C:N:P ratios of 546:24:1, 100:10:1, and 25:5:1 (w/w) to simulate nutrient limited and two nutrient supplemented conditions, respectively. ...
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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 ...
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Biofiltration as pre-treatment to water harvesting and recycling
This paper presents the results of the long term biofilter experiments conducted with raw stormwater collected from a canal at Carlton, in Sydney. Anthracite and granular activated carbon (GAC) were used as a single filter media in biofilter columns. Media heights of 75 and 40 cm were used. The filter columns were operated at filtration velocities of 0.12 and 0.25 m/h. The removal efficiency for ...
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Biofiltration systems for the treatment of waste gas from industrial plants
Bord na Móna Environmental Ltd have considerable experience in the field of biological air filtration (600 installations). Initially, the majority of installations were on Municipal and Industrial Wastewater applications. This was quickly followed by Municipal Solid Waste, an application Bord na Móna jointly developed with its Italian partners Air Clean srl. Since 2000, Bord na Móna have ...
By Anua
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Biofilters vs Asdorption
In the last three decades biological technologies have emerged as a sustainable and economically-viable alternative compared to traditional techniques like adsorption/absorption for purifying gases. They were well-received initially in the industry and interesting products with good results were carried out for several years. However, owing to a series of reasons that will be detailed in this ...
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