coarse bubble diffuser Articles

  • Use of Mass Balances for the Determination of Oxygen Contribution of the Different Air Sources in a Full-Scale Membrane Bioreactor

    MBRs necessitate two sources of aeration: one for scouring the membranes (coarse bubble, CB) and the other for the biomass requirements (usually fine bubble, FB). In the framework of a in-depth study of a full scale municipal MBR plant (10 000 p.e.) where CB and FB are in the same tank (Biosep®), mass balances were used to determine the OTR of the different combinations of CB+FB at different air ...

  • An assessment of oxygen transfer efficiency in a gas permeable hollow fibre membrane biological reactor

    The clean water oxygen transfer efficiency (OTE) of a full scale non-porous hollow fibre gas permeable (GP) membrane (surface area of 500 m2) was evaluated at inlet air pressures of 1.2, 1.4, and 1.8 atm using two established testing methods. To form a basis of comparison with traditional aeration technologies, additional testing was done with conventional aerators (fine bubble and coarse bubble ...


    By IWA Publishing

  • Monitoring the variations of the oxygen transfer rate in a full scale membrane bioreactor using daily mass balances

    Oxygen transfer in biological wastewater treatment processes with high sludge concentration, such as membrane bioreactor (MBR), is an important issue. The variation of α-factor versus mixed liquor suspended solids (MLSS) concentration was investigated in a full scale MBR plant under process conditions, using mass balances. Exhaustive data from the Supervisory Control And Data Acquisition (SCADA) ...


    By IWA Publishing

  • Alpha Factors in Full-Scale Wastewater Aeration Systems

    ABSTRACTSurface active agents depress gas transfer at gas-liquid interfaces. They are present as measurable trace contaminants at all environmental and at most industrial gas-liquid interfaces. This paper presents the results of several studies, including lab and full scale studies that show the depression of gas transfer, usually quantified by the alpha factor, can be related to the Reynolds ...

  • A realistic dynamic blower energy consumption model for wastewater applications

    At wastewater treatment plants (WWTPs) aeration is the largest energy consumer. This high energy consumption requires an accurate assessment in view of plant optimization. Despite the ever increasing detail in process models, models for energy production still lack detail to enable a global optimization of WWTPs. A new dynamic model for a more accurate prediction of aeration energy costs in ...


    By IWA Publishing

  • Modelling a full scale membrane bioreactor using Activated Sludge Model No.1: challenges and solutions

    A full-scale membrane bioreactor (1,600 m3 d−1) was monitored for modelling purposes during the summer of 2006. A complete calibration of the ASM1 model is presented, in which the key points were the wastewater characterisation, the oxygen transfer and the biomass kinetics. Total BOD tests were not able to correctly estimate the biodegradable fraction of the wastewater. Therefore the wastewater ...


    By IWA Publishing

  • STP Plant Supplier in Chennai – sewage treatment Plant in Chennai Tamilnadu

    RRR ENVIRO SYSTEMS STP plant supplier in Chennai Tamilnadu .We are the Manufacturing and supply of all the types of STP Plant like ASP & FBBR Methods in 10 KLD STP,50 KLD STP, 100 KLD STP, 150 KLD STP, 200 KLD STP, 300 KLD STP, 400 KLD STP, 500 KLD STP, 600 KLD STP with the best rates available in the Indian Market. Process Of STP plant The sewage shall be passed through the screen chamber to ...


    By RRR ENVIRO SYSTEMS

  • Case study: Food & beverage industry

    OverviewGranador, a premium brand of Unidrink AG, is a well known beverage producer, located in Hitzkirch, Switzerland. Granador produces about 45 million bottles per year for distribution all over Europe. The plant had an anaerobic reactor for wastewater treatment, but effluent quality did not meet the requirements for discharge to the sewer system. ...

  • Kfar Ruppin, Israel A Case Study

    Case Study: Fish FarmClient: Kibbutz Kfar RuppinStart Up: 2004Capacity: 120 m3/h circulation Overview Kfar Ruppin is one of the leading fish farming coops in Israel. Recent restrictions on water consumption and discharge have led the coop to consider semi intensive closed loop fish ponds. The main objectives in closed loop fish farming applications are ...

  • Granador juice, Switzerland A Case Study

    Case Study: Food & Beverage IndustryClient: Granador AG SwitzerlandStart Up: July 2004Capacity: 500 m3/d Overview Granador, a premium brand of Unidrink AG, is a well known beverage producer, located in Hitzkirch, Switzerland. Granador produces about 45 million bottles per year for distribution all over Europe. The plant had an anaerobic reactor for ...

  • Saving Energy and Improving Quality - Case Study

    Location: Melville, New York Owner: Newsday Inc. Engineer: Phase 1: Cameron Engineering Phase 2: H2M (Holzmacher, McLendon & Murrell) Contractor: Newsday Inc. & Benson Construction and Development Stringent Effluent Requirements Located in Melville, NY, Newsday Inc. provides a daily newspaper for the metropolitan area of Long Island. More than 30 ...


    By WesTech Engineering, Inc.

  • Mason OH case study

    Growing with the Flow Population increase forces Mason, Ohio, to examine biosolids handling process Located in southwest Ohio, between the cities of Cincinnati and Dayton, is the growing metropolis known as Mason. Founded in 1815, Mason has attracted large corporations such as Cintas and Procter & Gamble’s Health Care Research Center. Additionally, on the ...


    By Komline-Sanderson

  • Introduction to Ozone Injection Technology

    Untitled Document Ozone is a highly reactive chemical that has proven to be effective in destroying a wide variety of organic chemicals, including MtBE and chlorinated VOCs. ...

  • WEFTEC’ 2013 Lagoon wastewater treatment using Innovative bioaugmentation technology case study

    Introduction and Problem Statement Lagoon wastewater treatment systems employ a combination of physical, chemical, and biological processes to treat wastewater. Lagoon wastewater treatment systems are simple, natural, energy efficient, and one of the most cost effective treatment options, especially for small and rural communities. Lagoon systems are easy to operate, require lower ...

  • Bioremediation of Effluent the Pulp and Paper Industry

    The treatment of industrial effluent from the paper manufacturing facilities in British Columbia is a major concern because the effluent is discharged into prime salmon habitat in the marine environment (Cross, 1994). High levels of biological oxygen demand (BOD) in the effluent reduce the dissolved oxygen (DO) available to species in the marine environment. In 1988, the Federal Department of ...


  • Paragould AR case study

    Maximum Capacity Expected Increased population in Paragould, Ark., forces city to expand wastewater treatment plant to better manage sludge disposal Does this sound familiar? Your lagoon is filling with both primary and secondary sludge, and will be at capacity within the next two years. Paragould, Ark., a growing city of 22,500 located in northeast Arkansas, had just that problem. ...


    By Komline-Sanderson

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you