Wastewater Treatment Case Studies and White Papers

  1. Wastewater Disinfection and Reuse - Lake Arrowhead, California (Case Study)

    In 2000, the district’s average water demand was 2.3 million gallons per day (MGD) (363 m3/hr) and was estimated to grow over 20% by 2030. Unfortunately, there was not a sufficient or permanent reliable source of supply to meet future demands.

  2. The Value Of Continuous Instrumentation To The Operator & Why Manufacturers Should Listen To Their Needs

    When I began my career as a power plant chemist most continuous analyzers were trending devices at best.  Conductivity was the most reliable analyzer and the temperature compensation algorithms were marginal.  Sample conditioning with respect to sample temperature control was not very good as well. By Randy C. Turner, Technical Director, Swan Analytical USA

  3. Power Plant Uses 3M Liqui-Cel Membrane Contactors To Remove CO2 From Water

    A major power plant in Thailand is using 3M™ Liqui-Cel™ Membrane Contactors to remove carbon dioxide from a DI water system. The system is an expansion project and will be used to feed a high pressure boiler. Liqui-Cel membrane contactors are being used to lower the CO₂ inlet into an Ionpure Electrodeionization (EDI) system. Carbon dioxide adds an ionic load to the EDI system, which can reduce the performance of the system. Manufactures of the EDI equipment suggest lowering the inlet CO₂ to reduce the load on the equipment and improve the water quality.

  4. Pure Oxygen Injection Into A Pipeline

    The Hagerstown Wastewater Treatment Plant in Maryland incorporated several plant modifications, one of which was the conversion of their disinfection process from the use of ozone to UV.

  5. Biologically Engineered BioFilm Modifications For The Enhancement Of Collection System Transformations And Impacts On BNR Wastewater Treatment
    Increased influent RBCOD and heterotrophic plate counts coincided with the start of bioaugmentation in this study. Observed influent sulfide levels were also lower during bioaugmentation
  6. Aerobic Digester Reduces Nutrient Return And Improves Energy Efficiency

    Faced with rising operational costs due to increasing energy and chemical prices, as well as stricter effluent permit limits, many operators and engineers are turning to performance optimizers and controls automation to enhance treatment processes and reduce operating costs while limiting capital expenses.

  7. Project Profile: WWTP Dundee, Oregon Earns An Incentive By Reducing Energy Consumption With The Help Of ETS-UV™ Disinfection Systems

    The City of Dundee is a growing community with a strong economy boasting three wineries within the city limits and several others in the surrounding Willamette River Valley. The City’s existing WWTP was nearing capacity, and the limited discharge to the Williamette River would not adequately support Dundee’s planned growth.

  8. DIC Corporation Unveils New SEPAREL Hollow Fiber Membrane Module For Decarbonation

    At Aquatech 2017, Sun Chemical Corporation and its parent company, the DIC Corporation, unveiled two new SEPAREL® hollow fiber membrane modules for decarbonation. The EF-120-Q and EF-040P-Q modules extend the life of ion-exchange resins used in the production of pure and ultrapure water by utilizing a proprietary hollow fiber membrane that removes 1.7 times more Carbon Dioxide than any existing SEPAREL module.

  9. Springdale, Arkansas, Wastewater Treatment Plant Operators Call Headworks Screens 'Bulletproof'

    The Poultry Capital of the World is a city in northwest Arkansas in the heart of the Ozark Mountain range. Springdale, Arkansas, the fourth largest city in the state, is the headquarters for Tyson Food Corporation, the world's largest meat-producing company. The city was founded in the mid-1800s and has been a hub for agriculture and industry in the region since then. In addition, the region is home to outdoors activities like fishing, hunting, camping, boating, etc., and the natural, outdoors life is enjoyed by many residents as well as visitors to the area.

  10. Lift Stations: Attacking The 'New Sewage' With Vaughan Chopper Pumps

    Disposable, throw-away products are making raw sewage pumping tougher than ever. The Jefferson Street Pump Station at the City of Centralia, WA had a problem demanding a cost-effective solution.