Wastewater Treatment Case Studies and White Papers

  1. Freeport Wastewater Treatment Plant Saves Money And Energy With Hybrid Blowers
    9/30/2013

    Best known as the home of outdoor retailer L.L. Bean, the community of Freeport is a popular summer destination on the shore of Casco Bay in southern coastal Maine. In 2010, the Freeport Sewer District brought in engineering firm Woodard & Curran (also of Freeport), to conduct an energy analysis of the Freeport Wastewater Treatment Facility. The assessment revealed that the Freeport plant consumed more than 8.9 kBtu per gallon of wastewater treated, more than double the national average of 4.1 kBtu per gallon. While an outdated oil heating system contributed to the overall inefficiency, the plant’s 30-year-old multistage centrifugal aeration blowers accounted for as much as 80 percent of the electricity consumption. By Beth Brindle, Water Online

  2. New Septage Receiving Plant Results In Decreased Maintenance
    2/21/2017

    Previously to installing their new Septage Receiving Station 18-Mile Creek WWTP had very little protection from unknown debris entering their plant from haulers. The plant reports that in the time that the RoFAS Septage Drum and WAP Washpress have been operating, they’ve processed many septage loads without issue.

  3. A More Efficient Approach To EPA Stage 2 DBP Compliance
    4/20/2018

    Everyone wants pathogen-free drinking water, and adding chlorine is a great way to get it. Unfortunately, the dirtier a water treatment plant (WTP)’s raw water inflow — in terms of natural organic matter (NOM) or microbial organisms — the more disinfection byproducts (DBPs) the chlorination process will generate in the form of trihalomethanes (THMs) and haloacetic acids (HAAs). Those DBPs increase the risk of non-compliance with the U.S. EPA’s Disinfectants and Disinfection Byproducts Rules. Choosing the right instrumentation to measure NOM through spectral absorption coefficients (SACs) can have a big impact on treatment strategies — in terms of both costs and compliance performance.

  4. Water And Food: One Man’s Vision
    10/2/2017

    Angelo Mazzei has always thought locally and acted globally. Born and raised in California’s San Joaquin Valley — one of the world’s most productive farming regions — Angelo worked for his uncle’s 10,000-acre farming operation after graduating from college. There he saw a pressing need for a system that would allow farmers to safely and efficiently inject fertilizer into their irrigation water — a task made even more challenging with the 1968 introduction of high-pressure water supplies through the California Aqueduct, a 400-mile-long water conveyance system. A new approach was vital.

  5. Case Study: Municipalities Are Focusing On The Reliability Of Their Lift Station Backup Plans
    10/21/2008
    With the increasing regulatory enforcement for sanitary sewer overflows (SSOs), more municipalities have been forced to ask themselves: how reliable is my lift station backup plan? In an effort to avoid SSOs, schedule preventive maintenance, and allow for future growth, an increasing number of utilities are replacing traditional backup generators with independently powered backup pump stations.
  6. Protecting Water Resources: A Multifaceted Approach
    11/7/2017

    As the cost of and demand for potable water increases, engineers, planners, and utilities need reliable, innovative methods for protecting this valuable resource. Cost-effective and environmentally sustainable wastewater collection and treatment systems are vital components in the water cycle and therefore require careful analysis. While there is no single solution for every site or community, traditional ‘big-pipe’ systems are rarely appropriate in sensitive environments; fortunately, today there are more options than ever to consider.

  7. Clinton, MA SuperDisc Case Study
    12/22/2011

    The Clinton Wastewater Treatment Plant provides advanced wastewater treatment, including nutrient removal, for the towns of Clinton and Lancaster, Massachusetts.

  8. 100% Reuse: 5-Stage BNR And Secondary Clarification
    1/13/2015

    The Emerald Coast Utilities Authority (ECUA) manages water and wastewater treatment for Pensacola, FL, and surrounding areas. The 19-acre Main Street Wastewater Treatment Plant had been in operation since the 1970s and began to require many upgrades.

  9. How Digitalization Can Boost Natural Disaster Resiliency In Municipal Water And Sewerage Treatment
    3/28/2019

    Digitalization of the municipal water treatment industry is fragmented today, with instrumentation, control, and automation technologies mixed with manual operational activities. Such infrastructures can be detrimental in cases of hydro-geological events, such as severe storms and earthquakes. The good news: When natural disasters strike, digitalization can help get municipal water treatment back online quickly and effectively.

  10. Case Study: Fountain Hills Combines Cloth Media Filtration With Membrane System To Get Reuse Quality Effluent At An Economical Cost!
    1/1/2005

    The Fountain Hills Sanitary District WWTP was first constructed in Fountain Hills, Arizona in 1974 and received an aggressive upgrade in November of 1999. The plant was in need of an upgrade because the original treatment equipment had reached the end of its life expectancy, and the tremendous growth and changing environmental regulations called for it.