In the design of wastewater treatment plants, aeration typically involves supply of both oxygen and mixing. Aeration is a large consumer of both energy and operational costs. The Aire-O₂ Triton aerator/mixer is a process aeration technology that addresses both of these aspects and is environmentally friendly, which is a winning formula to help achieve long term sustainability. By Cheri D. Cohen, Aeration Industries International, Inc.

Rapid population growth created the need for a plant initially designed for 5 MGD to expand four times over two decades to treat 27 MGD today. With no grit removal the plant struggled with grit since start-up, spending hundreds of thousands of dollars on contractors to remove accumulated grit every 2-3 years. The plant wanted to eliminate their grit problems once and for all. Tired of wasting money, time, and effort on this futile but necessary task, the plant hired Wilson Engineers to evaluate various grit removal technologies to determine which type of system would be capable of eliminating their grit problem.

Turbo blowers improve wastewater aeration efficiency through high-speed impellers, lower energy use, and minimal maintenance, making them ideal for continuous, high-pressure applications when properly selected and maintained.

A major Texas-based refinery provides significant feedstock flexibility and product diversity to the area’s operations. The plant dates to the early 1900s and following upgrades now produces more than 125,000 barrels per day. A vital element of any refinery is its ability to be constantly ready to respond to a fire, so when the refinery found an inoperable valve on its 12” carbon steel fire suppression line and was in need of a way to add a valve to their system without shutting down the line, their maintenance and repairs contractor, ISS, suggested installing an AVT EZ Valve.

Warm Springs Wastewater Treatment Plant (WWTP) was incorporated in 1950 and utilized a RBC system with secondary clarification and chlorine disinfection to meet BOD and TSS treatment objectives

Maintain strict permit compliance even when hydraulic shocks or seasonal loads hit your system. Membrane filtration ensures dependable removal of solids and organic load, providing a critical process stability buffer against unexpected compliance risks.

About an hour south of Atlanta, the city of Barnesville, Georgia is a town of shady, tree-lined streets, a fondness for celebrating its history, and a sharp eye on the future.

Air/gas mass flow meters find a variety of applications in many of today’s large urban water treatment plants, both clean water and wastewater. From measuring disinfection gases to controlling air or gas flow in digesters and aeration systems, the proper application, installation and operation of mass flow meters improves process efficiency as well as end product quality while at the same time reducing plant operating costs

Sturbridge, Massachusetts historically suffered from periodic blooms of filamentous bacteria that caused bulking in the secondary clarifiers of their three activated sludge package plants.

Not long ago, systems engineered to manage and mitigate stormwater runoff were predominately of the “gray” variety. Today, however, more and more municipalities are embracing green stormwater infrastructure (GSI).  

This customer supplies district heating and electricity for the region of Sønderborg. For one of their waste applications a MAG meter failed within 6 months, and was successfully replaced with a Panametrics Aquatrans AT600.

As interest in biogas grows, more attention is being paid to measuring biogas flow, which has long been a problem area in process measuring technology.

Energy costs continue to increase. At the same time, there is increased pressure to reduce utility bills without sacrificing operations or comfort.

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.

Water quality test strips have been around for decades. They are usually constructed from a porous media, including different types of paper, and undergo a color change when dipped into water containing the analyte of interest. These test strips have seen application in swimming pools, aquariums, hot tubs, remediation sites, and other commercial/environmental areas.

Hydrogen sulfide (H₂S) gas in wastewater environments is a familiar concern. But waiting until its odor is detected can be too late to exert as much control over it as desired. Fortunately, a new ability to monitor H₂S concentrations — in the liquid wastewater stream, in real time — is advantageous for wastewater professionals in terms of safety, cost, and consumer complaints. Here are four ways to capitalize on that capability.

A water purveyor was in urgent need of a chemically resistant flow instrumentation with a long life of service that allowed reliable and long-term stable dosing of the sodium hypochlorite solution.

Selecting the correct accessories will maximize cleaning while minimizing water use, tank refills, labor, and headaches.