Tag: energy
Advanced Oxidation Processes: Tackling Micropollutants in Wastewater Effluent Micropollutants in treated effluent are driving municipalities to add tertiary barriers, and advanced oxidation processes for wastewater are among the most effective but technically demanding options. This practical, evidence-driven guide explains how AOPs work, compares major platforms, lays out design and integration rules, and covers monitoring, byproduct […]
Belt Press vs Centrifuge: Choosing the Best Sludge Dewatering Solution When choosing how to cut sludge volumes and disposal costs, the belt press vs centrifuge sludge dewatering decision is one wastewater manager faces every day. This post compares belt press dewatering and centrifuge dewatering on performance, energy and operational costs, maintenance and footprint, and environmental […]
When a plant faces tighter turbidity targets or a constrained footprint, the choice between sand water filtration and multimedia media is one of the most effective levers for improving throughput, lowering backwash costs, and tightening effluent quality. This article compares silica sand mono beds against common multimedia stacks from the municipal operator perspective, focusing on […]
INTRODUCTION One of the most frequent causes of secondary clarifier failure, effluent permit violations, and excessive aeration energy costs in biological wastewater treatment is the mismanagement of bioreactor mass balances. Engineers and operators must continuously balance organic loading against biological mass. For wastewater professionals, an Activated Sludge Parameters: MLSS MLVSS F/M Ratio Guide is not […]
INTRODUCTION One of the most frequent and costly errors in municipal water and wastewater engineering is sizing a control valve to match the adjacent pipe diameter without performing proper hydraulic calculations. This “line-sizing” approach routinely results in valves that operate nearly closed, leading to severe control hunting, premature seat wear, and destructive cavitation. To avoid […]
INTRODUCTION For municipal consulting engineers, plant superintendents, and operators, a leaking pressure relief valve (PRV) is far more than a nuisance—it is a continuous drain on operational efficiency, an environmental compliance risk, and an indicator of compromised system safety. While operators frequently blame the valve manufacturer when weeping or fugitive emissions occur, the engineering reality […]
INTRODUCTION One of the most persistent and costly errors in municipal water and wastewater engineering is the practice of “line-sizing” control valves. When engineers default to matching a control valve’s diameter to the adjoining pipe size, the result is almost always an oversized valve. A poorly sized valve operating continuously between 10% and 20% open […]
INTRODUCTION Handling heavy primary sludge, raw grit, lime slurries, or industrial tailings presents one of the most punishing fluid handling challenges in any treatment facility. In these applications, standard valving rapidly falls victim to severe abrasion, chronic clogging, and debilitating torque spikes. A surprising number of facilities experience premature valve failures—sometimes within months of commissioning—simply […]
Effluents from municipal and industrial sources drive most operational headaches and permit risk at wastewater plants. This how-to guide provides a practical, technically detailed roadmap to design and operate effluent monitoring programs, select pretreatment and treatment strategies, and improve discharge quality while managing CAPEX, OPEX, and regulatory exposure. Expect clear decision criteria, sampling and QAQC […]
INTRODUCTION In municipal water, wastewater, and industrial fluid transport systems, gate valves are the quintessential isolation mechanism. However, a common misconception plagues piping design: the assumption that because gate valves are typically operated either fully open or fully closed, calculating their flow coefficient is unnecessary. This oversight makes Gate Valves Sizing and Selection: Cv one […]