Heating and Cooling System Changes Slash Hospital’s Energy Bill
On the wall of John Henderson’s office at Albany General Hospital, two large graphs track consumption and costs for natural…
Energy Savings for the Plant Operator
The following discussion is divided into two main topics: energy conservation through process control and energy conservation through process changes….
Design of the Los Angeles Aqueduct Water Filtration Plant
Residents of Los Angeles have been drinking water from the Owens River since 1913 when the city’s water department engineers…
Water Conservation–Do We Need It?
Increasing demands and costs of supply have spurred a growing desire to use resources more efficiently. Federal, state, and local…
Acting Up * Why the Activated Sludge Process Is So Hard to Operate
Because the activated sludge process is highly controllable, it is the most commonly used biological treatment for municipal and industrial…
Flucculator-clarifiers bring performance benefits to large treatment plants
Clarifiers with a range of design features to promote flocculation are helping large treatment plants achieve consistently low effluent suspended…
Process Design Considerations for Upgrading Secondary Treatment Systems in Integrated Bleached Kraft Mills
The secondary treatment system at a western integrated bleached kraft mill was evaluated for its ability to meet the proposed…
Class A Biosolids Through Storage and Air Drying-Project Initiation
Municipal wastewater agencies are finding that it is increasingly desirable to provide high-quality biosolids products. Pathogen content often needs to…
How to Ensure Successful Passage of Proposed Wastewater Utility Investments: Capital Planning Processes for a New Era
In 1992, the Municipality of Metropolitan Seattle initiated a twenty-year capital planning process for the future design and construction of…
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…
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…
CMUD Optimizes Pretreatment Program
Competitiveness and operational efficiency are growing themes in utility management across the nation as utilities deal with increasing pressure to…