Operators of lakes, rivers, reservoirs, and other waterbodies commonly introduce harmful chemicals and other compounds — such as antibacterials and bleach — in an attempt to rid the water of problems such as algae and toxins. However, with beneficial bacteria it is possible to achieve a balance in water or discharge by reducing phosphorus and other key parameters naturally, thereby eliminating or drastically reducing the food source for algae.

The existing aerated grit basin (AGB) grit removal system at Fox Lake, IL, was at the end of its useful life and needed to be replaced. There were two requirements for the replacement: they wanted to retrofit the new equipment in the existing area and to eliminate grit deposition in the grit basin which was very difficult to remove. Steve Vella, Fox Lake’s plant Supervisor, saw the HeadCell® at WEFTEC in Chicago. He liked the stacked tray concept, and thought it would be the ideal solution to their plant’s grit problem. He had seen similar operational principles in lamella systems. The stacked tray design would allow them to increase their surface area which would increase their grit system performance, while staying within the existing area used by the AGB.

This article will discuss considerations for designing a temporary solution for removing per-and polyfluoroalkyl substances (PFAS) from water, including effective technologies and how to select a solutions provider.

Murfreesboro, Tennessee, is the fastest growing city in Tennessee, and one of the fastest growing cities in the United States with its population more than doubling since 2000. To manage this growth, the city’s Water and Sewer Board recently embarked on an $8.2 million project to construct the Southwest Regional Force Main.

In today’s competitive business environment, which focuses on increased throughput, economies of scale and a healthy bottom line, accurate and reliable measurement is a key component. Monitoring production processes by installing a wide range of sensors including flow, level, temperature, and pressure is common and crucial to be competitive. Although there are many reasons why plant managers decide to install monitoring devices in their process, environmental and regulatory reasons dominate one side of the spectrum, whereas quality, process control and monitoring govern the other.

The 64,000 sq ft Chesapeake Bay Watershed includes parts of MD, VA, WV, PA, and NY. Of the 1,000s of WWTPs supporting nearly 18 million people in the watershed, 470 are designated by EPA as significant sources of nutrients and TSS. Algal blooms reduce DO levels in the water, killing plant and animal life — from marsh grasses to blue crabs to rockfish. Learn how De Nora TETRA Denite technology is treating 450+ MGD in the Bay.

This is the third article in a series of articles and case studies examining the adoption of innovative solutions in water treatment and the market drivers of change influencing how companies in various industries manage their wastewater.

Have you ever walked or driven by a lake covered with a thick scum that looks like pea soup? This could be caused by blue-green algae, a cyanobacteria (“cyan” means “blue-green”) that is frequently found in freshwater ponds and lakes. Cyanobacteria are often confused with green algae because both can produce dense mats that may smell bad and hamper activities like swimming and fishing. However, unlike most green algae, blue-green algae can produce cyanobacterial harmful algal blooms (cyanoHABs). The highly potent toxins they make, called cyanotoxins, can harm people, animals, aquatic ecosystems, the economy, drinking water supplies, property values, and recreational activities.

ABB in the UK saw a 50 percent increase in the sales of its Aztec 600 water quality analyzers in 2023 compared to the previous year as British water utilities worked to ensure more sustainable management of potable and wastewater supplies, as well as compliance with water quality and environmental regulations.

Faced with soaring ammonia loads—especially during race weekends when 250,000+ fans descend on the town—the Speedway, Indiana Wastewater Treatment Plant was in urgent need of a solution.

Level controllers have evolved to meet today’s environmental challenges and industry demands. Learn how they support improved process management and, ultimately, a better bottom line.

A municipal association needed to understand if wastewater was being equally distributed across two cast iron pipes within its wastewater treatment plant. Learn how clamp-on ultrasonic measurement helped successfully measure the flow.  

Siemens offers to our customers the ability to make both process measurements, and to remotely monitor the activity and health of instrumentation, whether you have a SCADA, PLC or DCS system, or not. By utilizing Siemens’ ability to offer unparalleled flow, level, pressure, temperature, and weight measurement we can provide a broad range of process measurements and offer unequaled monitoring of the health and performance of those products.

A Southern U.S. municipality experiencing taste and odor issues in a certain neighborhood was also having difficulty maintaining chlorine residual levels in the area. Biological growth was suspected, however, water leaving the treatment plant met and exceeded all water quality requirements. After several investigations, the source of contamination in the distribution system could still not be identified.

UV AOP performance verification requires a robust test matrix covering design, operating, and control conditions. This process includes on-site execution, sample analysis, and troubleshooting to achieve successful regulatory approval.

Flex-Tend flexible expansion joints have a proven record of providing protection for pipelines subject to subtle or sudden movement. As with all products used in the water and wastewater industry, protection is optimized with the selection of the proper assembly incorporated into a sound design. This paper is intended to provide assistance in both of these areas.

There’s a lot to be considered in the price tag of an ultrasonic instrument. Derek Moore from Siemens explains how the historical way of thinking only of capital costs needs to change to the more holistic approach of total expenditures.

This application note presents comparative data obtained on influent and effluent wastewater samples using laboratory and on-line TOC analyzers employing the heated sodium persulfate oxidation technique in USEPA-approved methods 415.3 and SM 5310C.

The Littleton/Englewood wastewater treatment plant, Colorado, put in place processes to effectively monitor the levels of ammonia in their wastewater treatment.