Tag: frequently asked questions
Introduction In municipal and industrial wastewater treatment, the precision of chemical dosing is directly linked to process compliance, yet the longevity of the dosing equipment is often compromised by material mismatching. A common point of failure in chemical feed systems is not the mechanical drive mechanism, but the degradation of wetted parts due to unforeseen […]
Introduction to PC Pump Intake Hydraulics One of the most persistent and expensive failure modes in municipal wastewater treatment plants involves the premature destruction of progressive cavity (PC) pump stators. While often blamed on “bad rubber” or manufacturing defects, a significant percentage of these failures are actually hydraulic issues rooted in the civil and mechanical […]
Introduction to Submersible Pump Metallurgy One of the most persistent and costly challenges in modern wastewater management is the premature degradation of submersible pumping equipment due to shifting influent chemistry. As water conservation efforts reduce flow rates, wastewater becomes more concentrated. Simultaneously, longer retention times in force mains and collection basins accelerate septicization, leading to […]
Introduction One of the most persistent and costly failures in municipal wastewater collection systems is not the mechanical failure of the pump itself, but the failure of the intake hydraulics. Engineers frequently specify high-efficiency, robust pumping equipment, only to place it into a geometry that guarantees reduced lifespan. A significant percentage of premature bearing failures, […]
Introduction Peristaltic pumps (often referred to as hose pumps or tube pumps) are frequently selected for their ability to handle aggressive chemicals, viscous sludge, and shear-sensitive fluids in water and wastewater treatment. However, despite their mechanically simple design—typically involving a rotor compressing a hose—they present a unique set of operational challenges. A surprising industry statistic […]
Activated Carbon Filtration: Removing Contaminants from Water Article Overview Article Type: Informational Primary Goal: Provide municipal engineers, wastewater treatment operators, plant designers, and equipment manufacturers with a technical, implementation-focused guide to activated carbon filtration covering mechanisms, contaminant scope, design calculations, operational practices, monitoring, regeneration and disposal options, vendor selection, and real-world performance data so they […]
Introduction In the complex hydraulics of a modern wastewater treatment plant (WWTP), the peristaltic pump—often referred to as a hose pump or tube pump—occupies a critical niche that centrifugal technologies cannot fill. While engineers are intimately familiar with pump curves for water transfer, the specification of positive displacement equipment for abrasive sludge or off-gassing chemicals […]
Ion Exchange Water Softening: How to Remove Hard Water Minerals Article Overview Article Type: How-To Guide Primary Goal: Give municipal and industrial wastewater professionals a detailed, engineer-grade guide to design, specify, operate, and troubleshoot ion exchange water softening systems that remove calcium and magnesium, including resin selection, regeneration chemistry, brine management, monitoring and a worked […]
Introduction One of the costliest errors in municipal wastewater design is the mismatch between pump metallurgy and fluid characteristics. Engineers often default to 316 Stainless Steel for its “universal” corrosion resistance, only to witness premature failure due to abrasive scour in grit-heavy sludge applications. Conversely, specifying standard Grey Cast Iron for septic receiving stations can […]
Introduction One of the most insidious threats to the longevity of large-scale pumping systems is the phenomenon of air entrainment caused by intake vortices. For municipal and industrial engineers, the challenge is compounded when geotechnical constraints force the use of deep, circular containment structures. Diaphragm Wet Well Design and Minimum Submergence to Prevent Vortexing is […]