submerged aeration technology Articles

  • Simultaneous carbon and nitrogen removal from municipal wastewater in full-scale unaerated/aerated submerged filters

    Characterization and evaluation of a biological submerged filter was carried out on a full-scale pilot plant performing removal of biochemical oxygen demand (BOD) and total nitrogen (TN) from pre-treated urban wastewater. The average influent values of BOD5, chemical oxygen demand (COD) and TN were 370, 1,015 and 60 mg/L, respectively. The pilot plant produced good discharge quality during ...


    By IWA Publishing

  • 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 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 ...

  • Dynamic Mathematical Modeling of Membrane Fouling in Submerged Membrane Bioreactors

    ABSTRACTA mathematical model is developed that accounts for internal fouling of membranes due to soluble microbial products during subcritical flux operation, and for supercritical flux fouling due to cake formation and compression.. The model takes into account the filtration effect generated by the cake. A set of differential equations is derived and solved numerically to obtain a description ...

  • Computational fluid dynamics simulations of membrane filtration process adapted for water treatment of aerated sewage lagoons

    The aim of this study is to apply the membrane bioreactor technology in an oxidation ditch in submerged conditions. This new wastewater filtration process will benefit rural areas (<5,000 population equivalent) subject to chronic water shortages by reusing this water for irrigation of green areas. For this purpose, the membranes developed without support are immersed in an aeration well ...


    By IWA Publishing

  • Bord na Móna introduces new wastewater technologies

    Bord na Móna Environmental Products U.S. Inc., the American market subsidiary of the $550-million Bord na Móna group based in Dublin, Ireland, introduced three new wastewater treatment solutions and new odor/VOC control technologies at WEFTEC.08 in Chicago, Ill. The company said it was significantly expanding its commitment to the U.S. market through the ongoing development of environmentally ...


    By Anua - Bord na Móna Limited

  • Fixed activated sludge treatment (FAST®) process technology overview

    Biological treatment systems for small communities and even single-family dwellings have been available in the general water pollution control market for many years. These systems are basically scaled-down versions of the activated sludge process, utilizing suspended growth systems. Historically, the main operational problem associated with these systems has been the management of the sludge ...


    By Bio-Microbics, Inc.

  • Wastewater treatment plant implements MBR – technology for sewage water from hospital

    The chemical industry is facing a multitude of economical and environmental challenges. Not only is it detrimental for a chemical plant’s continuous existence in today’s global environment to become more and more cost-effective, the environmental regulations are also becoming increasingly stringent. Hence, the MBR technology with its high quality effluent proves to be a good fit for ...


    By MICRODYN-NADIR GmbH

  • Influence of Operating Conditions on Fouling Behavior in Wastewater Membrane Bioreactor Process

    ABSTRACTMembrane fouling was studied using three pilot-scale submerged membrane bioreactors operated at a series of permeation and aeration conditions to treat municipal wastewater. The transmembrane pressure increases were used to calculate the fouling ratios to compare the relative fouling rates. The results showed that the trends of fouling resistances differed greatly, depending on the ...

  • Chemical wastewater treatment applying a membrane bioreactor (MBR)

    IntroductionAt the current time Membrane Bioreactors (MBR) are the primary focus of wastewater treatment technologies. MBR is a combination of biological activated sludge process for the removal of nutrients and a membrane filtration for separation of biomass and treated water. In industrial wastewater treatment MBRs have proven to be a particularly reliable technique [Cornel et al., 2006]. The ...


    By MICRODYN-NADIR GmbH

  • The expanded Bed Biofilm reactor (EBBR) – an innovative Biofilm approach for tertiary nitrification

    ABSTRACT The expanded bed biofilm reactor (EBBR) was developed by Advanced Bioprocess Development Ltd. (ABD) to provide a compact tertiary nitrification process. In terms of performance, the EBBR can meet an NH3-N discharge of less than 1 mg/L at high volumetric loading rates (1.0 kg NH3-N/m3 expanded bed /day). This high rate results from a predominance of nitrifying bacteria immobilized as ...

  • Treatment of high strength resin production wastewater case study

    Problem Full-scale Incineration of this wastewater had proved very expensive due to the fuel input required and the ongoing incinerator maintenance costs. The polymer manufacturer sought treatment alternatives to save money. Initial biotreatment pilot work indicated that biotreatment was not feasible using conventional activated sludge technology even when the concentrated wastewater was ...


    By Bioscience, Inc.

  • BIO-CEL® MBR Modules Part of a comprehensive solution to eliminate micro pollutants

    In July 2011, the waste water plant at Marienhospital in Gelsenkirchen, Germany was put into operation. It is the first European waste water treatment plant that focuses on the elimination of micro pollutants as well as the purification of the waste water from the hospital. The plant was built in line of an EU-project called “PILLS” (Pharmaceutical Input and Elimination from Local ...


    By MICRODYN-NADIR GmbH

  • WPL provides cost-Effective, wastewater treatment upgrade for union papertech case study

    A rising demand for tea and coffee papers increases production at Union Papertech’s paper mill in Lancashire.  A treatment plant extension was specified as this increase in production, together with substantial water savings in the paper making process, was expected to increase BOD (Biological Oxygen Demand) concentrations that would exceed their current discharge levels. In addition ...


    By WPL Ltd

  • Municipality of Saint-Onésime- d’Ixworth, Quebec case study

    In Quebec, the municipalities must make sure that their rejections of sewer achieve the goals applied to the receiving medium. The Bio-fosseMC, developed by the biological processes division of H2O Innovation, showed its effectiveness during more than one year testing project, which contribute to the obtention of the standard Technology (CF-4) certification allowed by the Quebec Ministry of ...


    By H2O Innovation

  • Waste Water Treatment Processes Explained

    SUNCOAST WASTE WATER MANAGEMENT  presents  AEROBIC -verses- ANAEROBIC THE AEROBIC PROCESS There are two basic types of sewerage treatment processes, which are the Aerobic process and the Anaerobic process. Aerobic means with air or oxygen and Anaerobic (septic) means without air or oxygen. Aerobic bacteria are a higher life form and when digesting waste are utilising dissolved oxygen or air in ...

  • Domaine du Lac Cristal Campground, Quebec case study

    Located in the Centre-du-Québec region, the Domaine du Lac Cristal campground was founded in 1970. This family business attracts thousands of visitors each year. With its 540 sites based in an attractive setting (beach, lake, golf course, etc.), the natural environment remains an important aspect to protect. During the year of 2003, the consulting firm HBA Expert Conseil was mandated to ...


    By H2O Innovation

  • E.On on-site sewage treatment plant (Ratcliffe-on-Soar) case study

    Located in Nottinghamshire, E.On's Ratcliffe-on-Soar facility is one of the most efficient coal fired power stations in the UK. With a total generation capacity of 2,000MW it produces enough electricity to meet the needs of approximately 2 million people. In March 2008 WPL were contacted by E.On to enquire about a replacement sewage treatment ...


    By WPL Ltd

  • E.On on-site sewage treatment plant (Ratcliffe-on-Soar)

    Located in Nottinghamshire, E.On's Ratcliffe-on-Soar facility is one of the most efficient coal fired power stations in the UK. With a total generation capacity of 2,000MW it produces enough electricity to meet the needs of approximately 2 million people. In March 2008 WPL were contacted by E.On to enquire about a replacement sewage treatment solution to serve personnel located at the site's ...


    By WPL Ltd

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