Tag: changes
INTRODUCTION The axially split case centrifugal pump remains the workhorse of the water and wastewater industry. Its robust design, high flow capabilities, and relative ease of maintenanceβallowing access to rotating assemblies without disturbing pipingβmake it a staple in raw water intakes, high-service pump stations, and large-scale cooling loops. However, despite their inherent durability, these assets […]
Introduction One of the most persistent and costly issues in municipal wastewater management is not the failure of the pump itself, but the mismatch between the pump’s hydraulic design and the system’s actual operating requirements. Industry data suggests that nearly 70% of centrifugal pumps in wastewater applications operate significantly outside their preferred operating region (POR). […]
Introduction In municipal water treatment and industrial wastewater processing, the chemical metering pump is often the smallest piece of rotating equipment with the highest disproportionate impact on process reliability. When a main lift pump fails, redundancy often covers the gap. When a chemical metering pump fails, regulatory compliance regarding disinfection, coagulation, or pH adjustment is […]
Introduction to High-Volume Pumping Systems In the realm of municipal stormwater management and large-scale raw water intake, the axial flow (propeller) pump is the workhorse of the industry. However, these high-flow, low-head machines are notoriously sensitive to installation conditions and hydraulic environments. A surprising statistic from reliability studies indicates that nearly 60% of premature failures […]
Introduction One of the most persistent failure modes in municipal and industrial fluid handling isn’t mechanical overloadβit 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 […]
INTRODUCTION In municipal water distribution and wastewater treatment, the vertical turbine pump (VTP) is a workhorse, valued for its efficiency and small footprint. However, when paired with Variable Frequency Drives (VFDs) without rigorous thermal and mechanical analysis, these systems frequently suffer from premature failure. A surprising industry statistic suggests that up to 30% of vertical […]
Location: 1625 Sunset Avenue, Lansing, MI 48917Operating Authority: City of Lansing Public Service Department FACILITY BASIC INFORMATION Plant Name: Lansing Wastewater Treatment Plant (WWTP) Location: Lansing, Ingham County, Michigan Operating Authority: City of Lansing Public Service Department Design Capacity: 40 MGD (Secondary Treatment), 165 MGD (Peak Wet Weather with Retention) Current Average Flow: ~19 MGD […]
FACILITY BASIC INFORMATION Plant Name: WRA Water Reclamation Facility (WRF) Location: 3000 Vandalia Road, Des Moines, Iowa Operating Authority: City of Des Moines (Operating Contractor for the WRA) Design Capacity: 100 MGD (Average Dry Weather), 260 MGD (Peak Hydraulic) Current Average Flow: ~75 MGD Population Served: ~500,000+ (Metro Area) Service Area: 17 Metro Communities (Des […]
The authoritative technical resource for the Metropolitan Water Reclamation District of Greater Chicago’s primary northern facility. FACILITY BASIC INFORMATION Plant Name: Terrence J. O’Brien Water Reclamation Plant (O’Brien WRP) Location: 3500 Howard Street, Skokie, Cook County, Illinois Operating Authority: Metropolitan Water Reclamation District of Greater Chicago (MWRD) Design Average Capacity: 333 MGD Design Maximum Capacity: […]