Use of a Wastewater Treatment Process Simulator As A Tool For Plant Upgrading
A wastewater treatment process simulator was used as a design and planning tool at the 950,000 m3/d Metropolitan Wastewater Treatment…
CMUD Optimizes Pretreatment Program
Competitiveness and operational efficiency are growing themes in utility management across the nation as utilities deal with increasing pressure to…
Use of a Water Quality Assessment to Aid CSO Decision Making In Seattle, Washington
Selecting the appropriate level of CSO control is a function of capital and operation costs and the degree to which…
Integrated Management Of The Sanitary, Combined, and Separate Storm Sewer Systems At The City of Portland, Oregon
The City of Portland, Oregon, is developing an integrated maintenance system for its three types of sewer systems, combined, sanitary,…
Why The Activated Sludge Process Is So Hard to Operate: Modeling Brings New Light To Operations
A kinetics based activated sludge model was calibrated using historical data obtained from the Blue River Treatment Plant. Simulations were…
Villa Dominico Landfill Vertical Expansion Project (VEP) Leachate Treatment System Design
In conjunction with Techint S.A., Brown and Caldwell designed a vertical expansion for the Villa Dominico Municipal Solid Waste (MSW)…
WERF: Impact of Bubble-Induced Surface Turbulence on Gas-Liquid Mass Transfer in Diffused Aeration Systems
The effect of turbulence, induced by diffused bubble aeration, on mass transfer at the water surface of a pilot aeration…
Change and Competition: The New Management Implementation Challenges
It is predicted that the changes that will occur in the next 50 years will exceed the changes that have…
Seismic Imaging Helps Define The Risk of Pipeline Collapse
Agencies all across the country are struggling with their infrastructure needs. Unfortunately, news stories about street collapse associated with aging…
VOCs in Fixed Film Processes. II: Model Studies
Models incorporating liquid-gas mass-transfer and biofilm mass-transfer resistances were developed for trickling filters (TF) and rotating biological contractors (RBC). Biodegradation…
Estimation of Fugitive Emissions from Refinery Process Drains
Fugitive emission sources in petroleum refineries are generally defined as volatile organic contaminant (VOC) emission sources from leaking equipment (valves,…
VOCs in Fixed Film Processes. I: Pilot Studies
A study of the fate of volatile organic contaminants (VOCs) in trickling filters (TF) and rotating biological contactors (RBC) was…