bioreactor unit Articles

  • MBR bioreactor installation - rhone poulenc agriculture, united kingdom

    Details Prior to installation of the Microbac Bioreactor at the Rhone Poulenc Agriculture site at Ongar, laboratory studies and a site trial were undertaken to demonstrate the effectiveness of the submerged, fixed film Bioreactor system for the removal of acetone and ammonia in the Rhone Poulenc waste stream. The main benefit of undertaking projects in a phased manner is that it ...


    By Microbac Ltd

  • Bioreactor installation - ministry of defence site, scotland, united kingdom

    Introduction A Bioreactor has been installed by Microbac at an MOD transit training camp in Scotland for army personnel. Occupation of the site varies widely, with as little as twelve persons, for short periods of time, and up to two thousand personnel at maximum occupancy Treatment For this reason, the client requested a system which required little day ...


    By Microbac Ltd

  • 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.

  • 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 ...

  • MBR bioreactor installation courtaulds, china

    Introduction Following a successful on-site trial using a mobile Bioreactor, Microbac has installed a full-scale Microbac Bioreactor unit in a Courtaulds textile plant in China to reduce the Chemical Oxygen Demand (COD) and Biochemical Oxygen Demand (BOD) of the wastewater. Information obtained from the site trial enabled accurate sizing of the full-scale Bioreactor unit to be ...


    By Microbac Ltd

  • 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

  • Energy Usage and Control at a Membrane Bioreactor Facility

    Membrane bioreactor (MBR) treatment has come of age in the United States, and is now considered for advanced treatment on facilities of 15 mgd and more. It offers the advantages of high clarity effluent without secondary clarifiers or filters, and the capability to perform in a very compact layout and configuration. As utility agencies consider MBR treatment, they may tend to overlook its high ...

  • Mass Flow Control in Bioreactors - Case study

    Vogtlin mass flow controllers are an excellent tool for precise control of gas flows in bioreactors. Bio reactors are used for critical and delicate processes where mass flow control of relevant gases need to be reliable, repeatable and flexible. For example, the dissolved oxygen needs to be carefully controlled to obtain repeatable pH control and volumes of fermentation gases like CO and H2 ...


    By iCenta Controls Ltd

  • A Submerged Attached Growth Bioreactor for Decentralized Wastewater Treatment

    ABSTRACTThe Amphidrome® process is a submerged attached growth bioreactor (SAGB) that has been used in Massachusetts, Connecticut, Rhode Island and New Jersey for decentralized wastewater treatment systems ranging in size from 440 gpd to 150,000 gpd. The two primary advantages of a SAGB are the small volume requirement and the elimination of downstream clarification. Five years of data from four ...

  • 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 ...

  • Pulse shear stress for anaerobic membrane bioreactor fouling control

    Increase of shear stress at membrane surfaces is a generally applied strategy to minimize membrane fouling. It has been reported that a two-phase flow, better known as slug flow, is an effective way to increase shear stress. Hence, slug flow was introduced into an anaerobic membrane bioreactor for membrane fouling control. Anaerobic suspended sludge was cultured in an anaerobic membrane ...


    By IWA Publishing

  • Evaluation of intermittent air sparging in an anoxic denitrification membrane bioreactor

    The impact of intermittent air sparging on the operation of an anoxic (dissolved oxygen 0.39 m3 m−2 h−1 with sparge lengths of 10 to 60 seconds, a low ...


    By IWA Publishing

  • Experimental evaluation of intermittent aeration of a hollow fibre membrane bioreactor

    Intermittent membrane aeration provides a substantially improved energy efficiency in hollow fibre-based immersed membrane bioreactors (HF iMBRs). The benefits of intermittent aeration have been assessed with respect to sustaining a target flux and/or limiting the fouling rate to a sustainable level based on a small plant using full-scale HF modules. Results show that for the same specific ...


    By IWA Publishing

  • Modular operation of membrane bioreactors for higher hydraulic capacity utilisation

    Using data from 6 full-scale municipal membrane bioreactors (MBR) in Germany the hydraulic capacity utilisation and specific energy consumption were studied and their connexion shown. The average hydraulic capacity utilisation lies between 14% and 45%. These low values are justified by the necessity to deal with intense rain events and cater for future flow increases. However, this low hydraulic ...


    By IWA Publishing

  • Effect of Process Configurations and Alum Addition on EBPR in Membrane Bioreactors

    ABSTRACTBench-scale studies were undertaken to explore the relative efficiency of three different process configurations for enhanced biological phosphorus (EBPR) removal; the University of Cape Town (UCT) process, the Sammamish Biological Nutrient Removal (SmBNR) process, and the University of Washington Membrane Biological Nutrient Removal (UW-MBNR) process. In this study, they all had the same ...

  • Evaluation of passive reduction of nitrate from greenhouse effluent by planted bioreactors

    A number of pilot-scale gravel and wood-chip hybrid bioreactors planted with select species, together with unplanted units, were evaluated for their nutrient removal capabilities from the typical greenhouse effluent with high levels of nitrate and salts. Two levels of nutrient solution (high and low loading: HL/LL) were prepared to simulate the typical characteristics of the greenhouse ...


    By IWA Publishing

  • Design and operating experiences of full-scale municipal membrane bioreactors in Japan

    In Japan, membrane bioreactor (MBRs) have been installed in 17 small-scale municipal wastewater treatment plants (WWTPs) in the past 8 years, together with two recently installed MBRs for larger-scale WWTPs. In this study, design and operating data were collected from 17 of them as part of a follow-up survey, and aspects including system design, biological treatment, membrane operation, problems ...


    By IWA Publishing

  • Anaerobic treatment of urban wastewater in membrane bioreactors: evaluation of seasonal temperature variations

    The objective of this study was to evaluate the effect of seasonal temperature variations on the anaerobic treatment of urban wastewater in membrane bioreactors (MBRs). To this aim, sludge production, energy recovery potential, chemical oxygen demand (COD) removal and membrane permeability were evaluated in a submerged anaerobic MBR fitted with industrial-scale membrane units. The plant was ...


    By IWA Publishing

  • Investigation of Nitrification and Nitrogen Removal from Centrate in a Submerged Attached Growth Bioreactor

    The purpose of this study was to investigate the nitrification and nitrogen removal from centrate produced in the dewatering process of an anaerobically digested sludge, using a single-unit, single-zone submerged attached growth bioreactor (SAGB). The nitrogen loading varied from 0.54 - 1.51 kg-N/m3-day and the organic loading varied from 0.07 – 0.64 kg-bCOD/m3-day. The ...

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