aerator system Articles

  • Aeration system improves mixing, oxygenation, & maintenance

    When its brush rotor system failed, the city of Franklin, LA, dccidcd to replace it with an Airc-02 Triton aeration/mixer system, which about equaled the ongoing costs of refurbishing die rotors. The aerators met all the city's needs and a year later, city officials purchased more of the aerators for its second ditch. Back in 2000, Franklin's wastewater treatment plant consisted of an activated ...

  • Updating a model of pulp and paper wastewater treatment in a partial-mix aerated stabilization basin system

    A relatively simple set of calculations was presented in 1994 to evaluate the effectiveness of each ASB cell as reactor, clarifier, and digester. The steady-state model, which incorporated estimates of solids settling and benthal feedback of BOD5 and nutrients, has been a reasonable diagnostic tool for municipal and industrial applications. Results have aided in understanding normal system ...


    By IWA Publishing

  • Finding Breathing Room - New aeration/mixing system manages tight nutrient limits, tight footprint

    Problem: Not enough capacity and an inability to meet stringent effluent limits for phosphorus. Solution: Installing combined mixing and aeration technology, as well as an automated control system. Aeration Industries International's Tri-Oval system enabled the city of Heyburn, ID to meet tight effluent requirements and increased loading on a small footprint and ...

  • KLa Jet Aerators/Mixers for Large Diameter Equalization Tanks - Case Study

    Flow Equalization Many municipalities are facing the challenge of having to equalize large volumes of storm water sometimes mixed with raw sewage in order to continuously meet their permit limitations. The equalized flow is stored during a storm event and then slowly diverted to the treatment facility when influent flows return to normal levels.  In the past few years the need ...


    By KLa Systems, Inc.

  • A sustainable system to Weather all seasons - Case Study

    Aerator upgrades help wastewater treatment plant survive cold Vermont winters More than two decades ago, cold Vermont winters brought a small Wastewater Treatment Facility to a halt with brush rotor icing problems. A major upgrade that included the Aire-O2® aspirator aeration system ...

  • Treatability Studies of Anaerobic/Aerobic Tomato-Processing Wastewater Treatment Systems: Pilot vs. Bench

    ABSTRACTTomato-processing wastewaters generated from food-canning industry are typically considered difficult to biodegrade since they contain seed, skin and high particulate and colloidal fractions. A bench-scale and a pilot-scale anaerobic/aerobic system were evaluated and compared for the treatment of high-strength tomato-processing wastewater. The pilot-scale and bench-scale systems had ...

  • Simultaneous Nitrification and Denitrification through Low-DO Operation

    Single-tank simultaneous nitrification and denitrification (SNdN) processes can potentially eliminate the need for separate tanks and for recycling mixed liquor from oxic nitrifying zones to the typically upstream anoxic zones for denitrification. However, the conditions involved are more susceptible to sludge bulking by excessive growth of filamentous bacteria. This study was aimed at ...

  • Built for generations - Case Study

    When building a wastewater treatment facility in 1984 officials in a Wisconsin village decided on an oxidation ditch design and chose Aire-O2®Aspirator aerators based on their flexibility and energy efficiency. Today, several of those aerators are still in use and the treatment facility operates at even more ...

  • Oxidation oval gets plenty of oxygen & mixing…guaranteed!

    Since 1984, the AIRE-O2® system has provided efficient oxygen transfer, good mixing, and easy maintenance even in severe winter conditions Problem This Midwestern, USA city wanted to replace an aging trickling filter system with a new, efficient wastewater treatment facility equipped to handle its future growth. Important factors in design were loading demand fluctuations, winter ...

  • Designed for generations, water & wastes digest

    Nearly 25 years ago, the consulting engineering firm Banner & Associate, Inc. designed an efficient wastewater treatment facility for the city of Madison, S.D., that featured process control, flexibility and treatment efficiency while minimizing operating and maintenance costs. Key to the system was the aspirator aeration system that supplied reliable oxygenation and mixing to the oxidation ...

  • Oxidation oval gets plenty of oxygen & mixing - Case Study

    Since 1984, the Aire-O2® system has provided efficient oxygen transfer, good mixing, and easy maintenance even in severe winter conditions Problem This Midwestern, USA city wanted to replace an aging trickling filter system with a new, efficient wastewater treatment facility equipped to handle its future growth. Important ...

  • Mixers and Flowmakers: Flowmakers at the Lynetten WWTP, Copenhagen

    In 1995 Landia installed 95 flowmakers, type POPL-I, in the aeration tanks at the Lynetten Wastewater Treatment Plant in Copenhagen. The wastewater treatment plants Lynetten and Damhusåen to which Landia also supplied mixers treat a total of 75-100 mio m³ wastewater a year - approx. 1.1 mio. person equivalents. The Lynetten WWTP is the largest wastewater treatment plant in Denmark. The client ...


    By Landia

  • Water mixing in waste lagoons

    Man-made lagoons have been used worldwide for the treatment of domestic and industrial wastewater, it seems, forever. All waste lagoons were first designed and thoughtfully planned considering their locations, soil makeup, and waste reduction processes prior to being implemented. The biological process of organic waste reduction is always a consideration of waste lagoon designs. There are three ...


    By Reliant Water Technologies

  • Case study - Industrial ASBR wastewater treatment facility, India

    This two (2) basin ASBR facility near Mumbai, receives a variety of industrial wastewaters collected from many factories and chemical production facilities. The 10,000 m3/d wastewater plant comprises flow metering, chemical treatment,  pH correction, flow splitting, flow equalization with aeration, chemical precipitation and lamella plate clarification, two (2) basin ASBR biological ...

  • Numerical study of fluid flow across multiple Cosmo ball

    The Cosmo ball mainly has its application as a filter media in an effluent treatment system. A very large surface area could be obtained for microbial attachment as the Cosmo ball has a design such that a surface for fluid interaction with the maximum microbial. This will greatly improve the degradation of organic matter in wastewater through the microbial activities. Cosmo ball is a media used ...


    By Inderscience Publishers

  • The source for floating WWT equipment brush rotors - mixers - polishing RBCs - Case Histories

    Products have been utilized in all types of wastewater applications including Activated Sludge Basins, Oxidation Ditches, Aerobic Digesters, EQ Basins, as well as Lagoons. Products can be used in anyaerated basin or lagoon that needs aeration, no matter the size or shape. These are not just surfaceunits -Mixing Depth & Homogeneous Mixing are not issues. Upgrade of 200 HP Orbal Oxidation ...


    By S&N Airoflo Inc.

  • Mixers and Flowmakers: Mixers at Bremen-Seehausen WWTP

    Treatment of 50 million cubic meters of wastewater per year - find more information on their website. Landia has a total of 26 submersible mixers operating at this plant. 10 mixers in the denitrification (BNR = biological nutrient removal) process, 6 of them in the denitrification tanks, 4 of them in effluent channels leading to these tanks for mixing of ...


    By Landia a/s

  • Treating pharmaceutical wastewater - Case Study

    A pharmaceutical facility in the Caribbean had an existing wastewater treatment process that utilized a sequencing batch reactor (SBR). SBRs use large tanks to collect wastewater, then a number of different options can be employed to treat the water (such as chemicals addition, aeration and mixing). When an SBR aerobically breaks waste down, it can produce a high volume of air that needs to be ...

  • Mixers and Flowmakers: Mixers at BNR plant in Borås, Sweden

    Borås Treatment Plant, the Gässlösaverket, is situated at the river Viskan which is also the recipient. The plant is the largest single discharge to the Viskan, and since the water does not pass any lakes on its way to the sea, the reduction of nitrogen is small. Due to requirements with regard to the reduction of nitrogen discharge set out by the Swedish environmental authorities, the Borås ...


    By Landia a/s

  • Yucaipa, CA - case study

    The Challenge - Upgrade In 2007 the Yucaipa Valley Water District in Yucaipa, CA upgraded their Activated Sludge treatment plant to a Kruger AnoxKaldnes Biofilm + Activated Sludge (HYBAS) process. The plant expansion was driven by an increase in hydraulic loading and a new Total Inorganic Nitrogen Limit that was lowered from 10 mg/L to 6 mg/L. Process Solution The process flow scheme includes ...

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