Dissolved Air Flotation as Secondary Clarification
Dissolved Air Flotation (DAF) units have long been used in the food industry to remove fats, oils and grease (FOG),…
Optimizing Primary Sedimentation and Wet Weather Flow Treatment Using CFD Modeling
Computational fluid dynamic (CFD) modeling was used to evaluate primary settling tank (PST) performance and a novel wet weather chemically…
Comparison of Three Wet Weather Flow Treatment Alternatives to Increase Plant Capacity
The Milwaukee Metropolitan Sewerage District is evaluating alternatives to increase the South Shore Water Reclamation Facility wet weather treatment capacity…
Comparison of Process Alternatives for Enhanced Nutrient Removal: Perspectives on Energy Requirements and Costs
As part of the Chesapeake Bay Restoration Act’s Enhanced Nutrient Removal (ENR), the Maryland Department of Environment (MDE) issued a…
Development of Guideline Documents for the Inspection and Condition Assessment of Pressure Mains
Pressure mains, including both potable water mains and wastewater force mains, rarely receive the levels of inspection and maintenance routinely…
Breakpoint Chlorination of Petroleum Refinery WWTP Effluent
Breakpoint chlorination followed by dechlorination was studied as a non-biological option to remove ammonia and nitrite from a California petroleum…
The Best Bang for the Buck: Making the Most of Available Influent Carbon for Nutrient Removal
The premise of this paper is that, even if influent carbon is insufficient to meet effluent nutrient limit requirements, it…
The Dirty Secret of Primary Sludge Prefermenters
The impacts of the recycled solids load from primary sludge prefermenters on activated sludge BNR treatment processes are evaluated in…
Solids Process and Overall Plant Automation * A Systematic Approach
Instrumentation and supervisory control and data acquisition (SCADA) systems are becoming more and more sophisticated and allow processes and treatment…
Development of a Site-Specific Cleanup Goal for PAHs in Soil Based on Anthropogenic Background Levels
During removal of an industrial landfill in Folsom, California, fill material was excavated and processed through a mechanical screening plant…
Metals with Analytical Detection Limits or Background Levels in Filter Media that Exceed Regulatory Screening Levels in Ambient Air
A project manager tasked with determining the concentration of metals in ambient air at an environmental site faces several important…
Perimeter Air Monitoring for Soil Remediation
Most environmental project managers are well versed in characterizing and remediating contaminants in soil and water media. When soil remediation…