Abstract: Comprehensive models of wastewater treatment systems are evolving and offer potential as tools for aiding engineers in developing cost‐effective designs. These tools can be used for examining tradeoffs among unit processes, ...

Abstract: Water quality management programs that allow different waste discharge rates during different seasons of the year are an innovative approach for reducing the cost of waste treatment. This paper presents an approach for ...

Abstract: The operation policy of Lake Shelbyville, Illinois has been modified several times in the past 20 years due to unusual weather conditions and changes in basin‐wide water resources development. A modified stochastic dynamic ...

Abstract: In developing management programs to regulate point sources of waterbomewaste, it may be convenient or even necessary to subdivide the dischargers into groups. For simplicity and effectiveness in meeting water quality ...

Abstract: An optimization model for designing an economical regional water supply system, which consists of water production and water transmission facilities, is presented. Water demands are assumed to be increasing over a planning ...

Abstract: The use of a rule‐based approximate reasoning modeling technique is illustrated in the context of wastewater treatment plant design. Sludge bulking is a poorly understood problem in activated sludge wastewater treatment ...

Abstract: One important problem with using mathematical optimization models for design of wastewater treatment systems is that parameter values, and thus, model results, are often uncertain. A general approach, called robust optimal ...

Abstract: A general approach, called robust optimal design, is developed in a companion paper and applied here to a comprehensive, nonlinear, activated sludge treatment system. The treatment system robustness is related to the ...

Abstract: Optimization approaches are shown to be effective in solving a comprehensive model of an activated sludge wastewater treatment system. A new decomposition approach tailored to take advantage of the special structure of the ...

Abstract: One complex aspect of environmental planning is the stochastic planning nature of environmental impacts. Planners can evaluate alternatives more fully if the stochastic impacts of various alternatives are incorporated into ...