Tag: process

Introduction For municipal and industrial wastewater engineers, the protection of downstream process equipment—pumps, valves, centrifuges, and digesters—starts at the headworks. The improper reduction of solids or the inefficient separation of inorganic grit can lead to catastrophic pump cavitation, seal failures, and the rapid accumulation of rag balls in digesters that necessitates expensive cleanouts. When specifying […]

INTRODUCTION Grit accumulation remains one of the most pervasive and costly “silent failures” in municipal wastewater treatment. While headworks screens provide visible capture, grit often bypasses preliminary treatment, settling in aeration basins, reducing digester capacity by up to 30%, and causing premature abrasion failure in downstream pumps. For consulting engineers and plant directors, the selection […]

Introduction The movement of dewatered biosolids, screenings, and grit is often the final bottleneck in modern treatment facilities. While headworks and biological processes receive significant engineering attention, the conveyance of “cake” solids remains a frequent source of operational headaches, from housekeeping nightmares to complete mechanical failures. Engineers tasked with facility upgrades often face a critical […]

FACILITY BASIC INFORMATION Plant Name: Akron Water Reclamation Facility (WRF) Location: 2460 Akron-Peninsula Road, Akron, Summit County, Ohio Operating Authority: City of Akron Department of Public Service, Sewer Bureau Design Average Flow: 90 MGD Peak Secondary Capacity: 220-280 MGD (Hydraulic) Population Served: Approx. 330,000 Service Area: City of Akron and 13 surrounding communities (approx. 96 […]

INTRODUCTION Grit removal efficiency is often the silent variable that dictates the lifespan of downstream biosolids equipment, clarifier drives, and digesters. While the civil design of grit chambers (vortex vs. detritor vs. aerated) garners significant attention during the design phase, the mechanism for extracting that captured grit—the grit pump—is the common failure point. Engineers often […]

1. Introduction In the complex hierarchy of municipal and industrial water and wastewater infrastructure, piping accessories—couplings, expansion joints, repair clamps, tapping sleeves, and restraint mechanisms—often receive less scrutiny than high-capital assets like pumps or membrane bioreactors. However, these components constitute the critical connective tissue of the entire conveyance system. They are the primary defense against […]

1. Introduction In municipal and industrial wastewater treatment, the management of residual solids—commonly referred to as sludge handling—represents one of the most complex and cost-intensive portions of the plant lifecycle. While the liquid treatment train often garners the primary focus regarding effluent compliance, the solids handling train dictates operational efficiency, disposal costs, and often the […]

FACILITY BASIC INFORMATION Official Designation: South Water Reclamation Plant (Regional Facility) Location: McAllen, Hidalgo County, Texas Operating Authority: McAllen Public Utility (MPU) Design Capacity: 10.0 MGD (Expanded capability to 15 MGD pending) Current Average Flow: 8.5 MGD Population Served: ~145,000 (Regional Service Area) Receiving Water Body: Floodway via discharge canal to Laguna Madre TPDES Permit […]

The Authoritative Technical Resource for Engineers and Industry Professionals FACILITY BASIC INFORMATION Plant Name: 69th Street Wastewater Treatment Plant Location: 2525 S/Sgt. Macario Garcia Drive, Houston, Harris County, Texas Operating Authority: City of Houston Public Works (Houston Water) Design Capacity: 200 MGD (Permitted Daily Average Flow) Peak 2-Hour Flow: 400 MGD Population Served: Approx. 1.2 […]

Introduction In the design and operation of activated sludge wastewater treatment plants, the aeration system represents the single largest consumer of energy, typically accounting for 50% to 70% of a facility’s total electrical demand. For consulting engineers and utility directors, selecting the correct aeration infrastructure is not merely a purchasing decision; it is a twenty-year […]