Tag: process

Introduction to Tertiary Filtration Selection For municipal and industrial engineers, the tertiary filtration stage is frequently the final safeguard between regulatory compliance and permit violations. As National Pollutant Discharge Elimination System (NPDES) permits tighten—particularly regarding total phosphorus (TP) limits of < 0.1 mg/L and strict turbidity requirements for Title 22 water reuse—the margin for error […]

Introduction One of the most persistent challenges in municipal and industrial water engineering is not the pipe itself, but the integrity of the connections, adaptations, and restraints. Industry statistics suggest that over 60% of pipeline failures occur at joints or fittings rather than along the pipe barrel. For consulting engineers and plant directors, overlooking the […]

1. Introduction In the hydraulic architecture of municipal and industrial wastewater systems, continuity of service is the paramount directive. While permanent infrastructure—lift stations, treatment plants, and gravity mains—forms the backbone of these systems, the ability to bypass these components during failure, maintenance, or rehabilitation is a critical engineering requirement. Emergency bypass and temporary pumping systems […]

INTRODUCTION One of the most persistent debates in municipal water treatment and tertiary wastewater polishing centers on the choice between proprietary membrane technologies and versatile packaged filtration systems. Engineers are frequently caught between the absolute barrier protection of ultrafiltration (UF) and the robust, forgiving nature of adsorption clarifiers or conventional multimedia filtration. This decision affects […]

Facility Status: Fully Operational | Phase: Major Capital Improvement (Ocean Outfall Legislation Compliance) Facility Basic Information Plant Name: South District Wastewater Treatment Plant (SDWWTP) Location: 8950 SW 232nd St, Cutler Bay, FL 33190 (Miami-Dade County) Operating Authority: Miami-Dade Water and Sewer Department (WASD) Permitted Capacity (AADF): 112.5 MGD Peak Hydraulic Capacity: ~285 MGD Population Served: […]

Introduction One of the most frequent debates in municipal advanced treatment design centers on the selection of tertiary filtration technology. Engineers are often tasked with balancing the stringent pathogen rejection of low-pressure membranes against the energy efficiency and simplicity of depth filtration. This dichotomy is best represented by analyzing DuPont – Memcor vs Aqua-Aerobic for […]

Note to Engineers: While frequently associated with the Union County Utilities Authority (which manages solid waste), the wastewater treatment operations in this jurisdiction are managed by the Rahway Valley Sewerage Authority (RVSA). This technical document focuses on the RVSA wastewater treatment facility. FACILITY BASIC INFORMATION Plant Name: Rahway Valley Sewerage Authority (RVSA) Treatment Plant Location: […]

The authoritative technical profile of Ocean County Utilities Authority’s northern regional asset. FACILITY BASIC INFORMATION Plant Name: Northern Water Pollution Control Facility (NWPCF)Location: Brick Township, Ocean County, New JerseyOperating Authority: Ocean County Utilities Authority (OCUA)Design Capacity: 32.0 MGDCurrent Average Flow: ~22-24 MGDPopulation Served: Approx. 250,000 (Seasonal fluctuations)Service Area: Northern Ocean County (Brick, Point Pleasant, Mantoloking, […]

Introduction One of the most persistent and expensive challenges in wastewater treatment plant (WWTP) operation is the downstream devastation caused by inorganic solids. Pumps with eroded impellers, clogged digestion tanks, and abrasive wear on sludge dewatering equipment cost utilities millions annually in preventable maintenance. Yet, headworks design often suffers from “copy-paste” specifications that fail to […]

1. Introduction The oxidation ditch is a modified activated sludge biological treatment process that utilizes long solids retention times (SRTs) to remove biodegradable organics. Oxidation ditches are typically complete mix systems, but they can be modified to approach plug flow conditions. Ideally suited for small- to medium-sized municipal wastewater treatment plants, these systems are renowned […]