Treatment Plant Modifications to Conserve Energy and Improve Performance
Creative funding along with thorough planning and design contributed to the successful energy conservation program at the Willow Lake Wastewater Treatment Plant, Salem, Oregon. By funding...
Comparison of Centrifuge Performance on Oxygen Activated Sludge
This paper compares the performance of centrifuges processing high purity oxygen activated sludge with units processing conventional activated sludge. Comparisons are made both for thickening...
Water Quality Assessment in a Stochastic Stream Environment
Methodologies are presented within this article to aid in the quantification of the uncertainty in the management of stream water quality. Specifically, means are developed for: (1) establishing...
Water Quality Criteria for Irrigation
An assessment of irrigation water quality for the concentration of inorganic constituents should consider crop sensitivities, soil properties, such as hydraulic conductivity, reactions...
Aquatic Weed Control by Grass Carp in Cool Water
Diploid grass carp have significantly controlled problem aquatic vegetation during a 3-year study in a northern Colorado irrigation canal where water temperatures ranged from 0 to 25?C....
Managing Water Table Management Systems for Water Quality
The purpose of this paper is to briefly summarize the results of water quality studies related to water table management conducted in North Carolina over the past 15 years. Results of...
Hydrologic Criteria: NPS Water Quality Assessment
This paper summarizes the authors deliberations and findings regarding selection of hydrologic conditions suitable for the evaluation of the water quality impacts of nonpoint sources (NPSs)...
Computer Control of Water Systems: Practical Considerations
Presented are some applications projects and procedures concerned with modeling and control of water supply and distribution systems. The work has resulted in the development of a suite...
Dynamic Modeling and Control Optimization in An Urban Area?A Case Study
The procedures adopted to achieve improved economic operation of the water supply and distribution system serving the town of Wolverhampton (UK) are described. An outline description is...
An Emerging Application of Microcomputers in Water Control
Plans being developed at the Corps' Hydrologic Engineering Center propose a gradual transfer of water control support from minicomputers to a network of microcomputer workstations....
Stochastic Control of Hydropower Systems
A two-level stochastic control method is presented for the real-time operation of hydropower projects. The first level assumes fixed turbine discharges and utilizes probabilistic inflow...
Control of Water Distribution Systems: Program Descriptions
The paper describes the operation and features of a suite of computer applications programs. These have been developed within the Leicester Polytechnic Water Control Unit for analysis,...
Development of an Optimal Water Supply System for London
The Thames Water Authority has developed an integrated strategy for providing water supplies to London into the 21st Century. At the core of this strategy is the construction of over 60...
Computer Control of Houston's Water System
The City of Houston's Central Surveillance and Control System utilizes dual host computers and over 100 'smart' Remote Terminal Units to control...
Optimal Control of the West Parisian Area Water Supply Network
The West Parisian Area regional office of Lyonnaise des Eaux has been equipped with computer-aided optimal decision-making software, using daily water demand forecasts. This tool calculates...
Water Quality Management During Low-Flow Periods: A Systems Analysis Approach
Water quality objectives may require water managers to consider deviations from original project purposes to provide downstream water quality maintenance during low-flow periods. The decision...
History of the Federal Interagency Sedimentation Project
Since 1939, the date of the Project's inception, the team has operated under the direction of two lead agencies - the U.S. Geological Survey and U.S. Army Corps of Engineers....
Water Quality Monitoring of Highway Construction
The primary objective of water quality monitoring, as it relates to highway construction, is to obtain quantitative information to ensure that runoff from the construction site does not...
Effectiveness of Wet Detention and Retention Ponds for Improving Stormwater Quality
The most commonly used structural measures for stormwater quality management and control are retention basins, wet detention ponds, and detention with filtration ponds. This paper explores...
Automation of Existing Dam Control Schemes
For installations that are already in operation, the following advantages are obtained from installing new electronic equipment: In the case that the dam or certain measuring stations...
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