wastewater aeration rotor Articles

  • Aeration upgrade

    The community of Moscow is located in the northeast corner of Pennsylvania, approximately 10 miles southeast of Scranton. The current WWTP consists of an activated sludge system with three oxidation ditches in parallel operation. The total volume of all three ditches is 0.372 million gal per day (mgd), while the average size of each ditch is 180 ft by 24 ft by 6 ft deep. Previously, two of the ...

  • Performance of Floating Horizontal Aerators in Aerated Lagoons and Oxidation Ditches

    INTRODUCTION When selecting aeration equipment to use for a specific application, issues to address include reliability, serviceability, capital cost, system appurtenances, and cost of operation and maintenance. Another important consideration is oxygen transfer rate (OTR). Horizontal floating aerators have relatively high transfer rates and have been used successfully in aerated lagoons and ...


    By S & N Airoflo, Inc.

  • Aerators Enhance Aerobic Digestion Process

    The city of Eden,N.C.,operates an extended aeration process designed for an average flow rate of 13.5 mgd with a mixed liquor suspended solids concentration that typically checks in about 6,000 mg/l. This high biomass concentration is necessary to provide a well-settling sludge and good effluent quality. Further, the plant influent is approximately 40% domestic wastewater and 60% industrial ...


    By S & N Airoflo, Inc.

  • Performance of mechanical aerator in wastewater treatment with special reference to oxidation ditch: a critical review

    Mechanical aerators used in wastewater treatment are the largest energy consumers in biological reactors. Well-known researchers have been working on the oxygen transfer by mechanical aerators in oxidation ditch process and they have successfully enhanced the efficiency of aeration system with considering the factors affecting oxygen transfer such as speed of rotors and geometry of aeration ...


    By Inderscience Publishers

  • 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 ...

  • Case study - Aeration retrofit in Troy, Alabama

    Troy Alabama’s Wastewater Treatment Plant was faced with broken discs causing dropping dissolved oxygen (DO) levels in their oxidation ditch. Aeration Industries International was called to help improve DO. The plant rented a 40hp Aire-O2 Triton®.  As rotors continued to break,  an additional Triton was rented. After seeing the performance of the rental equipment, six ...

  • Case study - Aeration ditch upgrade exceeds expectations

    Triton Process Aerators Meets Future Nitrogen Permit Regulations When the a Pennsylvania Sewer Authority was researching methods to improve the dissolved oxygen levels in its wastewater treatment plant’s oxidation ditches in 2001, they decided to totally replace its aging brush rotor system. They replaced the rotors with the  ...

  • 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.

  • Floating Horizontal Aerators Enhance Eufaula, Alabama Activated Sludge Plant

    The Eufaula, Alabama, wastewater treatment plant (WWTP) is an extended aeration activated sludge facility designed for an average daily flow rate of 2.7 million gallons per day (mgd). Prior to February, 2005 this WWTP used vertical aerators to provide oxygen and mixing in its aerator basins. The plant has two aeration basins, each 1.87 million gallons in volume, which had 160 horsepower (hp) of ...


    By S & N Airoflo, Inc.

  • Wastewater Treatment in Turbo Mode

    Sulzer turbocompressors type ABS HST are successful in wastewater treatment. Today, 2000 units are installed around the world—for example, in municipal plants like in the city of Sögel, Germany. Here, the turbocompressors not only reduced the operating costs but also helped the plant to cope with load fluctuations. The secret behind this success is an advanced design with proven ...


    By Sulzer

  • A new system for nitrogen removal - South African wastewater facility saves energy and meets nutrient removal regulations

    Many small communities across the U.S. and around the globe are struggling to meet more stringent nitrification of ammonia requirements on a tighter budget. When a South African community could not meet its state requirements and struggled with a failing rotor disc system, the town’s officials found an energy saving, affordable solution that met their unique needs and met all their new ...

  • Case study - 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 ...

  • 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

  • Case study - Deep ditch minimizes footprint

    Aerator/mixer system reduces effluent discharge BOD, TSS and phosphorus A goal of many communities in planning wastewater treatment facilities is to minimize the footprint, reducing land use. To reach this goal, a Chinese municipality built their oxidation ...

  • Midwest town’s oxidation oval trouble-free for decades!

    Year-round compliance is met in this double oxidation system Problem The Department of Natural Resources was very rigid in its requirements to keep this popular recreational river area free from pollution. The town’s wastewater treatment plant had problems with the two rotor units used for aeration in its oxidation oval. A 40 hp (30 kW) motor powered each rotor unit. When one was down, ...

  • Case study - A new system for Nitrogen removal

    South African wastewater facility saves energy and meets nutrient removal regulations Many small communities across the U.S. and around the globe are struggling to meet more stringent nitrification of ammonia requirements on a tighter budget. When a South African community could not meet its state requirements and struggled with a failing rotor disc system, the town’s officials ...

  • Deep ditch minimizes footprint

    A goal of many communities in planning wastewater treatment facilities is to minimize the footprint, reducing land use. To reach this goal, a Chinese municipality built their oxidation ditch to deeper parameter depths than conventional designs but experienced serious process and mechanical issues. Officials found that not all aerators are equal. For tackling this deep ditch activated sludge ...

  • Case study - Increased capacity & stringent effluent limits met in a small footprint

    This Idaho Wastewater Treatment plant’s two existing single-ring oxidation ditches were facing increased flows and a new tougher phosphorus limit of less than 2.3 kg (5 lb) of total phosphorus per day. In addition to a tight budget, the small amount of land available also hampered the city’s options. The consultant’s evaluation confirmed fine-bubble aeration “would ...

  • Case study - DO control maximizes oxidation ditch treatment efficiency

    Process control is key to maximizing wastewater treatment efficiency while minimizing operating costs. Implementing the right process control system in conjunction with the right equipment can save money on electrical costs and equipment maintenance. The wastewater plant for the city of Dawson, MN, uses a  ...

  • Case study - Oxidation ditch expansion comes with host of benefits

    This wastewater treatment plant located in Texas was originally designed in 2000 but within several years, the city needed to double the treatment capacities of the facility. The wastewater treatment plant was designed with a plant capacity of 1.5 MGD utilizing a single ditch with the extended aeration activated sludge process for secondary treatment to facilitate removal of ...

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