Tag: supply
Introduction For municipal and industrial engineers, few equipment failures are as frustrating—or as messy—as a mechanical seal breach on a progressive cavity (PC) pump. While the stator and rotor are generally viewed as the primary wear components, the shaft seal is frequently the weakest link in the reliability chain. A seal failure in a sludge […]
Introduction The rise of non-dispersible synthetic fabrics—commonly known as “wipes” or “rags”—in municipal wastewater streams has fundamentally altered the operational reliability of pumping systems. For decades, engineers relied on sphere-passing capability as the primary metric for solids handling. However, modern debris streams form long, tenacious ropes that defy traditional sphere-passing logic. One of the most […]
Introduction One of the most persistent failure modes in municipal and industrial fluid handling isn’t mechanical overload—it is the mismatch between pump metallurgy and fluid chemistry. Engineers often rely on legacy specifications, copying and pasting “Cast Iron Construction” for applications that have evolved in acidity or abrasiveness, or conversely, over-specifying exotic alloys for benign services, […]
INTRODUCTION The vast majority of municipal flood control and large-scale raw water intake infrastructure in North America was constructed between the 1950s and 1980s. Today, engineers face a critical ticking clock: massive concrete volute or vertical column axial flow pumps are reaching the end of their second or third lifecycle. The challenge is rarely as […]
Anoxic Zones in Wastewater Treatment: Nitrogen Removal Explained Article Overview Article Type: Informational Primary Goal: Explain how anoxic zone treatment removes nitrogen in municipal and industrial wastewater, covering microbial mechanisms, common process configurations, design and operational parameters, monitoring and control strategies, retrofit options, technology vendors, and real world examples so engineers and operators can design, […]
FACILITY BASIC INFORMATION Plant Name: Davenport Water Pollution Control Plant (WPC) Location: 2606 South Concord Street, Davenport, Scott County, Iowa Operating Authority: City of Davenport Public Works Design Capacity: 26.0 MGD (Average Dry Weather) / 60+ MGD (Peak Hydraulic) Current Average Flow: ~22-24 MGD Population Served: ~140,000 (Regional Service Area) Service Area: City of Davenport, […]
FACILITY BASIC INFORMATION Plant Name: Hanover Park Water Reclamation Plant (WRP) Location: Hanover Park, Cook County, Illinois Operating Authority: Metropolitan Water Reclamation District of Greater Chicago (MWRD) Design Capacity: 12.0 MGD Current Average Flow: ~8.5 MGD Population Served: ~59,000 residents Service Area: Northwest Cook County (Hanover Park, Schaumburg, Hoffman Estates, Streamwood) Receiving Water Body: West […]
Introduction In municipal wastewater lift stations and industrial effluent sumps, the submersible pump is often the most critical, yet least visible, asset. Because these units operate beneath the liquid surface, visual inspection during operation is impossible. Consequently, engineers and operators must rely heavily on external data and performance anomalies to identify impending failures. A surprising […]
The President Street Water Reclamation Center (WRC) stands as the cornerstone of wastewater infrastructure for the City of Savannah, Georgia. As the largest facility operated by the City’s Water Resources Department, it is permitted to treat a design flow of 27 million gallons per day (MGD). Located just east of the historic downtown district, the […]
FACILITY BASIC INFORMATION Plant Name: Five Mile Creek Water Reclamation Facility Location: Graysville/Birmingham, Jefferson County, Alabama Operating Authority: Jefferson County Environmental Services Department (JCESD) Design Capacity: 20.0 MGD Peak Hydraulic Capacity: 60.0 MGD Service Area: Northern Jefferson County (Forestdale, Graysville, Fultondale, Gardendale) Receiving Water Body: Five Mile Creek (Tributary to Locust Fork) NPDES Permit Number: […]