Category: Blog

Introduction In the hierarchy of wastewater treatment equipment, process pumps often receive the bulk of engineering attention. However, the humble dewatering pump acts as the critical fail-safe for plant operations. Engineers frequently encounter a scenario where a tank needs emergency draining, or a gallery floods during a storm event, only to find the portable or […]

Introduction In municipal water and industrial wastewater treatment facilities, pressure instrumentation is the sensory nervous system of the process. Yet, a surprising number of process upsets, pump protection failures, and chemical dosing errors can be traced back to a single, often overlooked component: the diaphragm seal (or chemical seal). Engineers frequently treat these isolation devices […]

Introduction One of the most dangerous misconceptions in hydraulic engineering is the attempt to apply centrifugal pump logic to positive displacement equipment. Engineers trained to identify the Best Efficiency Point (BEP), check for runout, and evaluate shutoff head on a standard curve often find themselves disoriented when presented with a peristaltic (hose) pump performance chart. […]

Trickling Filter Systems: Traditional and Effective Wastewater Treatment Article Overview Article Type: Informational Primary Goal: Explain how trickling filter treatment works, when and why to specify it in modern wastewater treatment trains, provide actionable design and operational guidance, and show modernization and retrofit options for municipalities and plant engineers Who is the reader: Municipal utilities, […]

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 One of the most persistent misconceptions in municipal wastewater engineering is that positive displacement (PD) pumps are immune to the hydraulic sensitivities that plague centrifugal systems. While it is true that double disc pumps (DDP) are robust, self-priming, and capable of handling high solids, they remain subject to the fundamental laws of fluid mechanics. […]

INTRODUCTION A frequent failure mode in municipal water and industrial wastewater applications is not the catastrophic burst of a casing, but the silent, cumulative degradation of insulation and mechanical seals due to thermal stress. Engineers often prescribe Variable Frequency Drives (VFDs) to improve energy efficiency, assuming that slowing a pump down inherently reduces stress on […]

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, […]