Wastewater Mixing White Papers and Case Studies

  1. A More Reliable, More Efficient Aerator – Tomball, TX WWTP
    2/26/2016

    ​In 2013, operators of the Tomball, Texas Wastewater Treatment Plant were facing increasing maintenance issues with three brush aerators operating in the plant's two-channel oxidation ditch. The aerator failures were threatening to compromise effluent quality and environmental compliance. Tomball needed replacements.​

  2. Submersible Mixer Solves An Icy Problem In Northern Quebec
    11/16/2015

    During the cold winter, the Quebec region enters a deep freeze, with temperatures often reaching -25 degrees Celsius.

  3. The Science Of Mixing And Improving Water Quality In Water Storage Tanks
    8/6/2015

    Water storage tanks and reservoirs are a critical component of distribution systems, yet they can pose a significant challenge for water utilities as they often have a negative impact on water quality. Water quality problems can develop due to low turnover and/or inadequate mixing resulting in short-circuiting. While the benefits of maximizing tank turnover to minimize water age are generally understood, it is only recently that extensive research on mixing characteristics of storage tanks has been undertaken that has provided insight on what causes water quality problems and expertise in designing inlet/outlet pipe configurations, or mixing systems, to achieve complete mixing and maintain water quality.

  4. Energy-Saving Solution With Flygt Compact, Low-Energy Mixers Yields Big Savings
    8/5/2015

    The Madison Metropolitan Sewerage District (MMSD) manages regional wastewater service for the Madison, Wisconsin area, providing wastewater collection and treatment for 43 municipal customers including cities, villages, and utility and sanitary districts.

  5. Tornado Aerators At Chicago O’Hare Wastewater Treatment Reservoir
    6/30/2015

    The Chicago area is served by a combined sewer network that carries both raw sewage and storm water.

  6. Activating The Sludge In Small Municipal Facultative Waste Lagoon Systems
    6/2/2015

    Wastewater treatment lagoons were originally facultative in design — shallow, single and multi-cell lagoon systems that counted on wind, sunlight, anaerobic bacteria, and time for the digestion of the organic components of the wastewater.

  7. Submersible Aerators Blast Off At Naval Air Station WWTP
    3/30/2015

    When the Jacksonville, Florida Naval Air Station needed to increase oxygen in their aeration basins, they turned to Fluence. Five submersible HURRICANE aerators provide bottom-up mixing, drawing surface air and dispersing it in a 360-degree pattern near the basin floor. Long bubble hang time results in excellent oxygen transfer, and ensures excellent BOD and ammonia removal, treating flows up to 3 MGD.

  8. Mixers Prevent Buildup And Reduce Wetwell Cleaning Charges
    3/9/2015

    The City of Reno, NV, has long battled the buildup of fats, oils, and grease in the wetwells of wastewater lift stations in the valleys within this high desert city. Recently, the city set out to address the problem and reduce the associated costs.

  9. Mixers Clear FOG And Reduce Operating Costs By More Than 80%
    3/8/2015

    The Cypress Creek WWTP in Florence, AL, uses an extended aeration activated sludge process with a design capacity of 20 million gallons per day (MGD). Cypress Creek serves mostly residential customers, but about 15 percent of its influent comes from industrial sources, and their discharge to the plant contains large amounts of fats, oils, and grease (FOG).

  10. Clogging Problem Solved; Maintenance Cost Reduced; 15 Percent Less Power Consumption Delivered
    3/6/2015

    A WWTP facility in Indiana serves a six-square-mile area, and has historically experienced pronounced peak flows caused by nearly one-fourth of its  collection system consisting of combined storm water and sanitary sewer lines.