fixed-film wastewater treatment Articles

  • Introducting a New Media for Fixed-Film Treatment in Decentralized Wastewater Systems

    ABSTRACTBoth naturally occurring and artificial media have been used to treat wastewater in small community settings. Systems using naturally occurring media include sand filters and peatbased biofilters. Artificial media include open cell foam, textiles, and plastics. All the above operate as fixed-film systems, in that attached growth microorganisms are encouraged to colonize and reproduce in ...

  • Ammonia Stripping And Integrated Fixed-Film Activated Sludge

    The Keystone Sanitary Landfill (KSL) is located at the Keystone Industrial Park in Dunmore and Throop Boroughs, Pennsylvania. The 618 acre landfill site was originally permitted for 5,000 tons of trash per day, and recently received a permit to develop more cells to extend the operation for another 25 years at 5,000 tons per day. Landfill leachate, an inevitable by-product of landfilling, is ...


  • Fluidized Fixed-Film Systems For Cost Effective Upgrade Of Existing Wastewater Treatment Plants

    As capacity demands increase and effluent quality regulations become increasingly stringent, a rising number of wastewater treatment plants across North America are in need of process upgrades. Nutrient removal requirements and high quality effluent standards for wastewater reuse have become more prevalent in recent years to safeguardaquatic habitat and conserve water resources. Upgrading large ...


  • Effect of organic loading on the performance of aerated submerged fixed-film reactor (asffr) for crude oil-containing wastewater treatment

    A large amount of water is used in oil industry for a wide variety of purposes and basic portion of it leaves this industry as wastewater containing oil, phenols, different solvents, and toxic substances  (Zhao, et al., 2006; Toril, 2001). Such wastewater can pollute water bodies, soil, and even the air if it is not treated (Yang, 2000; Chen, 2002; Vegueria, 2002). Biological treatment processes ...


    By University of Tehran

  • Effect of the pH influent conditions in fixed-film reactors for anaerobic thermophilic treatment of wine-distillery wastewater

    ABSTRACTIn anaerobic treatments, the pH conditions affect the efficacy and operation of the process. The main purpose of this research is to compare the effect of the pH influent on the performance of a high rate technology at laboratory scale, upflow anaerobic fixed-film reactor, treating distillery wastewater (wine vinasses) in thermophilic conditions. The results obtained shown that the pH ...


    By IWA Publishing

  • A pilot-scale study on PVA gel beads based integrated fixed film activated sludge (IFAS) plant for municipal wastewater treatment

    In the present study, a pilot-scale reactor incorporating polyvinyl alcohol gel beads as biomass carrier and operating in biological activated sludge mode (a combination of moving bed biofilm reactor (MBBR) and activated sludge) was investigated for the treatment of actual municipal wastewater. The results, during a monitoring period of 4 months, showed effective removal of chemical oxygen ...


    By IWA Publishing

  • Low energy mixing to optimize anaerobic digestion at the Kitchener WWTP

    The existing Kitchener Wastewater Treatment Plant (WWTP) is a conventional secondary treatment facility, with a rated capacity of 122,745 mVd. The plant is comprised of two separate secondary treatment plants (Plant 1 and Plant 2) served by a common headworks facilities and primary clarifier facilities. Plant 1 was constructed in the early 1960s and Plant 2 was constructed in the mid-1970s. Both ...

  • Decentralized Wastewater Treatment

    An application used worldwide, now growing in US to address the needs of small communities and developments Conventional sewer operations managed by small communities provide centralized treatment of wastewater of which residents are accustomed. But the expense of operating these systems as they expand with miles and miles of sewer lines is staggering. Expanding sewer line infrastructure, ...


    By Bio-Microbics, Inc.

  • Wastewater Treatment Basics

    Wastewater Treatment Basics A Refresher on The Basic Wastewater Treatment Steps... All wastewater treatment follows the same basic premise, water used in manufacturing, ...


    By Integrated Engineers Inc.

  • Achieving Advanced Wastewater Treatment Standards

    Integrated Fixed-film Activated Sludge (IFAS) systems is a hybrid system consisting of both suspended and fixed biomass growth, and it is achieved by incorporating a media that support biofilms in existing aeration basin. By promoting the growth of both carbonaceous-removing and nitrifying bacteria, an integrated fixed-film activated sludge (IFAS) process can improve effluent quality without ...


  • Biological Wastewater Treatment

    Untitled Document The use of microorganisms to remove contaminants from wastewater is effective and widespread. To choose the right system from the many options offered, ...


  • Two Year Case Study of Integrated Fixed Film Activated Sludge (IFAS) At Broomfield, Co WWTP

    The City & County of Broomfield wastewater treatment plant secondary treatment processes were upgraded to a new biological nutrient removal process described as Integrated Fixed Film Activated Sludge (IFAS) back in 2003 using a moving bed plastic carrier element to help grow the biomass. This allows the existing aerobic reactors to maintain nitrification during year round operation while ...

  • Conversion from Contact Stabilization to Nitrification using Integrated Fixed Film Activated Sludge (IFAS) in The Colony, Texas

     ABSTRACT In early 2005, the City of The Colony, Texas, began construction of major modifications to its wastewater treatment plant to increase plant capacity and modify their existing contact stabilization basins. Due to the limitations of the existing process, the facility was not able to consistently nitrify ammonia. New ammonia limits of 3 mg/L wouldneed to be met in addition to ...

  • Modeling Fixed Film Processes: Practical Considerations and Current Limitations from a Consulting Viewpoint

    ABSTRACT Fixed film technologies such as integrated fixed film activated sludge (IFAS), moving bed bioreactors (MBBR), biological aerated filters (BAF) and denitrification filters are gaining popularity in the United States for a number of reasons. As a result, there is a renewed desire to model these processes, particularly for consulting engineers interested in designing these processes. ...

  • Questions and Answers About Integrated Fixed-Film/Activated Sludge (IFAS) in a BNR Pilot Plant

    Integrated Fixed-film/Activated Sludge (IFAS) is an increasingly popular technology that promises to greatly improve the performance of activated sludge wastewater treatment systems.  However, many questions remain about the fundamental behaviors and performance of these hybrid systems. Their future development will require a better understanding of the biokinetic behaviors and distribution of ...

  • Treatment of winery wastewater in a full-scale fixed bed biofilm reactor

    ABSTRACTThe treatment of winery wastewater was performed at full-scale applying a two-stage fixed bed biofilm reactor (FBBR) system for the discharge in the sewerage. The results of the first year of operation at the full-scale plant are presented. Values of removed organic loads and effluent concentrations were interpreted on the basis of the COD fractionation of influent wastewater assessed ...


    By IWA Publishing

  • Intrinsic kinetics for fixed bed bioreactor in hospital wastewater treatment

    Variation in hospital wastewater (HWW) pollutants and differences with municipal wastewater (MWW), make the use of biokinetic coefficients obtained from activated sludge in the MWW treatment unprofitable for designing, modeling and evaluation of biological processes for HWW treatment. Since this study was conducted to evaluate the performance and biokinetic coefficients of a fixed bed ...


    By IWA Publishing

  • From Wastewater Treatment to Sweet Pineapples

    In wastewater treatment, ammonia that is removed from sewage used to be discharged directly to the atmosphere. Nowadays, studies have identified that ammonia emissions are of major concern to air quality. This has led to a new way of thinking. Sulzer offers modern closed-air-loop systems for wastewater treatment that transform ammonia into a common soil fertilizer. This reuse of a waste product ...


    By Sulzer

  • Town of Manhattan Wastewater Treatment Plant

    The Manhattan treatment plant is a 400,000 GPD plant in two trains, containing six 24 x 5.0 Bio-WheelTM. It is able to nitrify and denitrify, with two anoxic basins ahead of the aeration basins. Two conventional flight and scraper clarifiers are used. Three Penn Valley RA S/MLSS pumps are located in a separate pump room. The plant is designed for a future expansion to 0.8 MGD. At this time the ...


    By H2O Innovation

  • Wastewater Treatment Municipality Of Saint-Claude

    In Quebec, the municipalities must make sure that their rejections of sewerachieve the goals applied to the receiving medium. The Rotating BiologicalReactor (RBR), developed by the biological processes division of H2OInnovation, showed its effectiveness during more than one year testingproject, which contribute to the obtaining of the Standard Technology (CF-1) certification allowed by the Quebec ...


    By H2O Innovation

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