bioreactor membrane Articles

  • Membrane Bioreactor for Automobile Manufacturer

    Dynatec provided a system to treat wastewater from Ford's automotive assembly plant. The Problem The existing batch chemical treatment system for oil and metals removal was unable to meet the new standards for discharge to local POTW. The new requirements called for lower BOD and total Nitrogen and there was no way to make the existing system able to meet the standards. ...


    By Dynatec Systems Inc.

  • The cost of a small membrane bioreactor

    The individual cost contributions to the mechanical components of a small membrane bioreactor (MBR) (100–2,500 m3/d flow capacity) are itemised and collated to generate overall capital and operating costs (CAPEX and OPEX) as a function of size. The outcomes are compared to those from previously published detailed cost studies provided for both very small containerised plants (<40 ...


    By IWA Publishing

  • Membrane Bioreactor for National Park

    The problem: Assateague Island is a barrier island that stretches from the Eastern shore of Maryland down Atlantic coast to Virginia. The island is a National Park, administered by the National Park Service, under the National Seashore division. Assateague Island is a vital resting and feeding area for birds and also is home to more than 300 wild ponies. The park receives about 1 ...


    By Dynatec Systems Inc.

  • Energy efficiency in membrane bioreactors

    Energy consumption remains the key factor for the optimisation of the performance of membrane bioreactors (MBRs). This paper presents the results of the detailed energy audits of six full-scale MBRs operated by Suez Environnement in France, Spain and the USA based on on-site energy measurement and analysis of plant operation parameters and treatment performance. Specific energy consumption is ...


    By IWA Publishing

  • Membrane Bioreactor for Sanitary Landfill

    The Problem The county of Warren NJ owns and operates a sanitary landfill in Oxford Twp, NJ. The facility generates an average of 50,000 gallons per day of leachate, with peaks to 100,000 gallons per day. The facility was discharging to a local POTW from their lagoon, but they were facing requirements for nitrogen removal from the POTW and needed a new system to provide ...


    By Dynatec Systems Inc.

  • Pretreatment Requirements for Membrane Bioreactors

    Adequate pretreatment including fine screening is essential to the stable, long-term operation of membrane bioreactors (MBR) used to treat municipal wastewater. The amount of screenings generated by a screen with 1-2 mm size openings ranges between 10-25 dry mg/L. The cost of fine screening represents less than 3% of the total investment cost for a MBR-based wastewater treatment facility. Case ...

  • Membrane Bioreactors for RO Pretreatment

    ABSTRACTCurrently, treated municipal wastewater is typically discharged to the environment in most parts of the world. It is, however, a potential water resource from which high quality water for reuse can be produced. Reuse applications include both non-potable applications such as irrigation and production of industrial process water, and indirect potable reuse including aquifer recharge. For ...

  • Membrane Bioreactor for Retirement Community

    The facility: Glen Meadows is a retirement community located next to Gunpowder Falls State Park in north-central Maryland’s open country.  The community has Independent Living, Assisted Living, and Skilled Nursing and Rehabilitation facilities. The problem: The facility has grown significantly over the years. At first, a septic system ...


    By Dynatec Systems Inc.

  • Membrane Bioreactor Pilot

    The problem A company which produces a product that requires a constant supply of relatively clean water is planning to expand by adding new process units online.  The plant currently uses well water as a supply to its production.  The water production from the well is limited.  They need to install a system to produce reuse water to reduce the amount of water required ...


    By Dynatec Systems Inc.

  • Considerations for the design and operation of a membrane bioreactor

    This paper reviews recent advances in research focusing on the design and operation of a membrane bioreactor and including methodologies for determining the timing for hydraulic and sludge retention, sludge concentration optimisation, the removal of nitrogen and phosphorus, membrane fouling control, and the analysis of processing economics.Keywords: membrane bioreactors, activated sludge, ...


    By Inderscience Publishers

  • Modeling bioaugmentation with nitrifiers in membrane bioreactors

    Bioaugmentation with nitrifiers was studied using two pilot-scale membrane bioreactors, with the purpose of assessing the suitability of state-of-the-art activated sludge models (ASMs) in predicting the efficiency of bioaugmentation as a function of operating conditions. It was demonstrated that the temperature difference between seeding and seeded reactors (ΔT) affects ...


    By IWA Publishing

  • Fouling with aerobic granule membrane bioreactor

    Aerobic granulation (AG) and membrane bioreactor (MBR) are two promising, novel environmental biotechnological processes that draw interest of researchers working in the area of biological wastewater treatment. Membrane fouling in the combined aerobic granular membrane bioreactor (AGMBR) process and the conventional MBR process was investigated in this work. The irreversible fouling on ...


    By IWA Publishing

  • Evaluation of membrane bioreactor technology and desalting membranes for reuse..

    The City of Rio Rancho and MWH have recently completed a pilot-testing program to evaluate MBR technology followed by reverse osmosis (RO) membranes during operation on municipal wastewater. The pilot testing program is part of an overall water reuse plan being implemented by the City of Rio Rancho, NM to conserve water supplies through recycling of wastewater currently being discharged to the ...


    By Toray Chemical Korea

  • Proteins causing membrane fouling in membrane bioreactors

    In this study, the details of proteins causing membrane fouling in membrane bioreactors (MBRs) treating real municipal wastewater were investigated. Two separate pilot-scale MBRs were continuously operated under significantly different operating conditions; one MBR was a submerged type whereas the other was a side-stream type. The submerged and side-stream MBRs were operated for 20 and 10 ...


    By IWA Publishing

  • Evaluation of Novel Operational Strategies for Submerged Membrane Bioreactors

    MBR technology is still expensive to operate when compared to more traditional alternatives. The cost of the membrane and its operation is a significant variable in the overall capital and operational costs of an MBR. A novel dynamic scouring aeration control for membrane bioreactors is proposed in this contribution in order to minimize internal fouling of the membrane and increase the maximum ...

  • Evaluation of Newly Developed Membrane Bioreactors for Wastewater Reclamation

    Funded by U.S. Bureau of Reclamation, a pilot study is being conducted over a 1-year period to evaluate the performance of four newly developed Membrane Bioreactors (MBRs) at the Point Loma Wastewater Treatment Plant (PLWWTP) located in San Diego, CA. The four MBR systems tested include PURON™ MBR from Koch Membrane Systems, Huber VRM® Bioreactor from Huber Technology, Kruger Neosep™ MBR from ...

  • Influence of shear on nitrification rates in a membrane bioreactor

    Grundfos BioBooster (GBB) installed and operated a membrane bioreactor (MBR) test plant in 2012. During the period it became evident that the nitrification rate was lower than expected and a study was carried out to investigate the possible reasons for the observed low-nitrification rate. Tests were conducted at a pilot plant and the effect of shear from the BioBooster membrane system and the ...


    By IWA Publishing

  • Membrane Bioreactor for the treatment of natural rubber wastewater

    A membrane bioreactor was set up using two pieces of Kubota flat sheet membranes, with nominal pore size of 0.4 ∝m and a total effective area of 0.2 m²atex concentrate processing factory. A steady-state MLSS concentration was attained at 8500 mg/L during biomass acclimatisation. A critical flux of 0.01224 m³/m²h was determined using the flux step method, whereas an optimum ...


    By Inderscience Publishers

  • Long Term Experience with Hollow Fibre Membrane Bioreactors

    Abstract The membrane bioreactor (MBR) technology has been proven as a single step process to treat wastewater and produce an outstanding effluent quality suitable for reuse, either directly or as a pretreatment to reverse osmosis. While it is relatively simple to combine activated sludge with a membrane separation step, a number of challenges must be met to provide a process suitable for ...

  • Chlorination Disinfection Requirements for Membrane Bioreactor Permeate

     ABSTRACT The membrane bioreactor (MBR) process is typically designed and operated to produce a fully nitrified, high quality effluent (permeate) that makes it possible to use free chlorine for disinfection. In California, regulations (Title 22) require a minimum CT value of 450 mg-min/L or 5-log virus inactivation when chlorine is used to produce “disinfected tertiary effluent.” In ...

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