Tag: management
Understanding Nitrification and Denitrification in Wastewater Treatment Meeting tight effluent nitrogen limits demands a clear grasp of the nitrification denitrification process and how it responds to changing loads, temperature, and carbon availability. This practical guide unpacks the microbial pathways and stoichiometry behind ammonia oxidation and nitrate reduction, provides numeric design and operating ranges for SRT, […]
FACILITY BASIC INFORMATION Plant Name: Western Lake Superior Sanitary District Regional Treatment PlantLocation: Duluth, St. Louis County, MinnesotaOperating Authority: Western Lake Superior Sanitary District (WLSSD)Design Capacity: 43 MGD (Average Wet Weather), ~120+ MGD (Peak)Current Average Flow: ~35-38 MGDPopulation Served: ~135,000 residents + significant industrial baseService Area: 530 square miles (Duluth, Cloquet, Hermantown, Proctor, and surrounding […]
Introduction In municipal and industrial fluid handling, the integrity of a pump station relies not just on the hydraulic mover, but on the monitoring and control loop that governs it. A surprising statistic in water utility management reveals that up to 30% of pump efficiency loss is masked by inaccurate discharge monitoring, leading to undetected […]
FACILITY BASIC INFORMATION Plant Name: Metropolitan Wastewater Treatment Plant (Commonly: Metro Plant) Location: 2400 Childs Road, Saint Paul, MN 55106 (Serving Minneapolis and the Region) Operating Authority: Metropolitan Council Environmental Services (MCES) Design Capacity: 214 MGD (Average Wet Weather) / Peak Hydraulic Capacity > 600 MGD Current Average Flow: ~170 – 180 MGD Population Served: […]
The authoritative technical resource for the largest wastewater treatment facility in Minnesota. FACILITY BASIC INFORMATION Plant Name: Metropolitan Wastewater Treatment Plant (Metro Plant) Location: 2400 Childs Road, St. Paul, Ramsey County, Minnesota Operating Authority: Metropolitan Council Environmental Services (MCES) Design Capacity: 214 MGD (Average Wet Weather) Current Average Flow: ~170 MGD Population Served: 1.8 million […]
Introduction In municipal and industrial fluid handling, the horizontal end suction centrifugal pump is the workhorse of the facility. However, the pump itself is only as effective as the control loop that governs it. Engineers often expend significant resources selecting the pump hydraulic curve, yet frequently undervalue the specification of the verification device: the flow […]
FACILITY BASIC INFORMATION Plant Name: Blue Lake Wastewater Treatment Plant Location: 6949 Highway 101, Shakopee, Scott County, MN 55379 Operating Authority: Metropolitan Council Environmental Services (MCES) Design Capacity: 52.0 MGD (Liquid Stream) Current Average Flow: ~32.0 MGD Population Served: ~320,000 residents Service Area: 28 communities in Scott, Carver, and Hennepin Counties Receiving Water Body: Minnesota […]
Introduction In the world of fluid dynamics and utility management, the cost of measurement inaccuracy is rarely just a rounding error; it is a direct hit to operational budgets and regulatory compliance. For municipal consulting engineers and plant directors, the challenge often lies in distinguishing between equipment designed for widespread utility distribution and instrumentation engineered […]
UV Water Disinfection: A Proven Method for Safe Drinking Water Ultraviolet water disinfection uses germicidal UV-C to inactivate bacteria, viruses, and protozoa without introducing chemical residuals. This article gives municipal decision makers, plant designers, and operators the technical guidance they need: dose metrics in mJ/cm2 and log reductions, reactor hydraulics and UVT limits, lamp and […]
FACILITY BASIC INFORMATION Plant Name: Boulder Water Resource Recovery Facility (formerly 75th Street WWTF)Location: 4049 75th Street, Boulder, Boulder County, ColoradoOperating Authority: City of Boulder Utilities DepartmentDesign Capacity: 25.0 MGD (Hydraulic)Current Average Flow: ~13.5 MGDPopulation Served: ~108,000 residents (plus substantial commercial/industrial/university base)Service Area: City of Boulder and Gunbarrel Improvement DistrictReceiving Water Body: Boulder Creek (Segment […]