• CASPERON Solution Brings Process, Operation And Cost Benefits To Michigan Facility

    For 15 years, plans to double the capacity of Michigan’s Zeeland Clean Water Plant remained stalled as the City of Zeeland worked toward a joint wastewater treatment contract with two neighboring Ottawa County communities. As a result, maintaining efficient aeration control posed a challenge for the 1.65 million gallons per day (MGD) facility. When expansion plans moved forward in 2016, the city alleviated those problems with the Xylem Sanitaire CASPERON activated sludge solution process, which eliminated the use of lime to treat waste and significantly reduced the volume of biosolid residuals.

  • Saving The Most Money On Wastewater Aeration: Bringing It All Together

    The power required for aeration is 50 to 60 percent of the electric bill for a municipal wastewater plant, sometimes accounting for up to 4 percent of the associated community’s total power. Energy efficiency is a critical factor in evaluating blower performance.

  • Liquid-Only Sewers Offer A Cost-Effective Solution

    Liquid-only sewers (also known as “effluent sewers”) have proven to be a cost-effective solution for municipalities, new subdivisions, and a variety of other areas in need of sewer. As opposed to the big pipes and deep excavations typically required by gravity sewers, liquid-only sewers use small-diameter, shallowly buried mainlines that follow the contour of the land and are easily installed with light-duty equipment, minimizing disturbance to the surrounding area.

  • Onsite STEP System Handles Seasonal Peaks At U.S. National Park

    In 2017, the Golden Gate National Recreation Area in California was the second most visited place in the entire U.S. national park system, with almost fifteen million visitors. Established in 1972, it’s also one of the largest national parks located in an urban area, offering a wide variety of activities – from touring Alcatraz Island to hiking Montara Mountain to swimming at Stinson Beach.

  • AquaNereda® Aerobic Granular Sludge Technology

    The AquaNereda® Aerobic Granular Sludge (AGS) Technology is an innovative biological wastewater treatment technology that provides advanced treatment using the unique features of aerobic granular biomass. An aerobic granular biomass is comprised of compact granules that provide advantages compared to other secondary treatment processes.

  • Your Sewage Is Valuable Muck

    A world without phosphorus is a world without life. But phosphorus is a finite resource, so researchers are recovering it from sewage.

  • Microwaving Sewage Waste May Make It Safe To Use As Fertilizer On Crops

    Biosolids — primarily dead bacteria — from sewage plants are usually dumped into landfills. However, they are rich in nutrients and can potentially be used as fertilizers. But farmers can’t just replace the normal fertilizers they use on agricultural soil with these biosolids. The reason is that they are often contaminated with toxic heavy metals like arsenic, lead, mercury and cadmium from industry. But dumping them in the landfills is wasting precious resources. So, what is the solution?

  • Supplemental Aeration Nearly Eliminates Filamentous Sludge Bulking

    The Dubai Investment Park Wastewater Treatment plant in the United Arab Emirates faced challenges in their oxidation ditch due to filamentous sludge bulking, resulting in poor sludge settling in the secondary clarifier.

  • Ephrata Borough Authority Battles Chronic Sludge Settling

    Ephrata Borough Authority WRRF, located in the MidAtlantic region of the United States, has been battling chronic sludge settling issues since undergoing a BNR upgrade in 2011 to meet new permit limits. During the winter months, SVI values have reached as high as 300 mL/g.

  • Defining High Quality Biosolids: Exploring Options To Create A Market For Biosolid Products

    Water resource recovery facilities (WRRFs) are already aware of the idea that biosolids can be a valuable commodity. Consequently, there is opportunity to grow this market. The use of biosolids can create products that have value and generate a customer demand that ultimately leads to an economic incentive for WRRFs. There are several factors that contribute to the success of biosolid products, like the quality of biosolids and information available about how and where to use high quality biosolids.


  • IGNITE™ Integrated Nitrification Process

    The IGNITE™ Integrated Nitrification process is a non-activated sludge solution for upgrading lagoon based treatment plants to achieve improved BOD and ammonia removal. The process utilizes a combination of Parkson’s Biofuser® lagoon aeration system and the TumbleOx™ Nitrification Reactor process.

  • TumbleOx™ Nitrification Reactor

    The Parkson TumbleOx™ Bioreactor consists of a treatment tank(s) containing a series of slowly rotating drums. Each drum is partially filled with loose media which freely tumbles inside the five-foot diameter drum as it rotates. A thin biofilm grows on the media and provides biological treatment. The unique media design maximizes surface area for biological growth and also aerates the wastewater as the drum turns, providing dissolved oxygen for the micro-organisms. The system components include the rotating drum, plastic media, and the bearings and simple drive mechanism to slowly rotate the drum. No supplemental aeration system is required.

  • Recording & Control: Online Data Recording And Control In Anaerobic Digestion Processes

    Solids present in wastewater need to be safely and comprehensively treated and removed. This means not only removing toxic compounds, including both organic and inorganic materials such as heavy metals, but also eliminating any harmful bacteria present in the solids.

  • ST80 Series Thermal Mass Flow Meters

    ST80 is a high performance, rugged thermal dispersion technology air/gas flow meter that combines ultra-reliable, feature-rich electronics with the industry's most extensive selection of application-matched flow sensors to provide a truly superior solution for industrial processes and plant applications. The ST80 further combines these features with a robust, rugged transmitter enclosure and industry’s broadest selection of process connections to provide longest service life and ease-of-installation in your installation’s pipe or duct.

  • High Capacity MBR Sewage Treatment System: WWT-1000+

    This compact, easy-to-operate newterra Membrane Bioreactor (MBR) system combines activated sludge biological treatment with our advanced MicroClear™ ultrafiltration flat sheet membrane technology. The self-contained, high capacity system is comprised of four ISO-certified 40' shipping containers (high cube) and requires an area of only 15 x 15 m (excluding equalization tank/lagoon and permeate storage).


If you're seeking innovation, take a few moments to hear Daniel Dair, VP of Innovation at World Water Works, describe the inDENSE process. The result of a research project first launched five years ago, the process increases clarifier settleability at conventional activated sludge treatment plants, with configurations that can also address biological phosphorus removal. Dair reports sludge volume index (SVI) improvements of almost 50 percent at some facilities, as well as increased clarifier loading rates and better management of solids retention time (SRT) and mixed liquor concentrations. Learn more in this video overview.