Tag: strategies
The Modified Ludzack-Ettinger Process: Optimizing Nitrogen Removal Fundamentals of the Modified Ludzack-Ettinger Process When it comes to nitrogen removal, the modified Ludzack-Ettinger process is like that secret ingredient in grandma's famous recipe — you know it makes all the difference, but you just can’t put your finger on why. This process isn’t just a fancy […]
Introduction to PLC & Control Platforms in Water & Wastewater In the municipal and industrial water sector, the Programmable Logic Controller (PLC)—often evolving into the Programmable Automation Controller (PAC)—serves as the central nervous system of treatment and distribution infrastructure. Unlike discrete manufacturing, where systems may shut down for retooling, water and wastewater treatment plants (WTPs […]
Introduction In the realm of municipal and industrial wastewater management, the failure of a grinder pump due to ragging or jamming is rarely a minor inconvenience—it is a distinct operational hazard that leads to Sanitary Sewer Overflows (SSOs), costly emergency call-outs, and accelerated equipment degradation. With the increasing prevalence of “non-flushable” wipes and high-tensile synthetic […]
Introduction to Pressure Relief in Hydraulic Systems In municipal and industrial fluid handling, the difference between a reliable system and a catastrophic failure often rests on a single component: the pressure relief valve. Engineers frequently design pumping stations and transmission mains focusing heavily on pump curves and pipe schedules, yet they often treat surge protection […]
Introduction The escalation of non-dispersible solids in municipal wastewater streams—colloquially known as the “flushable wipes” crisis—has fundamentally altered how consulting engineers and utility directors approach pump station design. A decade ago, 3-inch solids handling capacity was sufficient for most municipal lift stations. Today, the tensile strength of modern synthetic fibers creates roping and matting that […]
Introduction One of the most persistent vulnerabilities in municipal wastewater infrastructure is the susceptibility of dry well lift stations to flooding. Traditional configurations utilizing standard TEFC (Totally Enclosed Fan Cooled) motors coupled to pumps via long drive shafts offer excellent maintenance access but catastrophic failure modes during flood events. When a dry well floods due […]
INTRODUCTION The handling of thickened sludge, grit, and high-solids wastewater represents one of the highest Operational Expenditure (OPEX) categories in modern treatment facilities. Engineers are frequently tasked with selecting positive displacement technology that balances hydraulic efficiency with solids handling capability. A single misapplication in this part of the process—such as specifying a pump with inadequate […]
Introduction In municipal and industrial fluid handling, the “miscellaneous” valve category often contains the most critical components for system stability and surge protection. While gate and butterfly valves handle standard isolation duties, specialized equipment—such as air release valves (ARV), check valves, pilot-operated control valves, and pinch valves—dictates the hydraulic integrity of the network. Engineers frequently […]
Understanding PFAS Chemicals: The Hidden Threat to Clean Water Chemical Properties and Classification of PFAS When it comes to PFAS chemicals, the term forever chemicals isn't just a catchy nickname; it's a stark reality. These substances can linger in the environment for decades, making them a persistent challenge for water treatment facilities. In fact, studies […]
Introduction In the landscape of municipal and industrial water and wastewater infrastructure, the butterfly valve represents one of the most ubiquitous and critical components for flow control and isolation. Characterized by a quarter-turn rotary motion and a relatively compact footprint, butterfly valves are utilized across a vast spectrum of applications—from raw water intake and high-pressure […]