Record Display for the EPA National Library Catalog

RECORD NUMBER: 95 OF 184

OLS Field Name OLS Field Data
Main Title Modeling and Optimization of Thermal Pollution Control Systems.
Author Hwan, C. L. ;
CORP Author Kansas Water Resources Research Inst., Manhattan.
Year Published 1972
Report Number Contrib-103; DI-14-31-0001-3216; OWRR-A-038-KAN; 14676,; A-038-KAN(1)
Stock Number PB-212 270
Additional Subjects ( Stream pollution ; Mathematical models) ; ( Water pollution ; Heat) ; ( Electric power plants ; Water pollution) ; Reviews ; Water quality ; Dissolved gases ; Oxygen ; Biochemical oxygen demand ; Cooling water ; Industrial water ; Feedback control ; Optimization ; Control theory ; Dynamic programming ; Linear systems ; Nonlinear systems ; Temperature gradients ; Thermal pollution
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB-212 270 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 51p
Abstract
The literature on dynamic mathematical models of water quality in streams and the temperature effect on DO and BOD concentrations is reviewed. A method of optimal control is applied to the determination of an optimal cooling water discharge policy of a power plant. The spatial distribution of temperature and its temporal change and their effects on the BOD and DO distributions in a stream are simultaneously determined. The development of optimal feedback control theory through the continuous dynamic programming and continuous maximum principle is reviewed. The development initially deals with linear systems and is then extended to nonlinear systems and distributed parameter systems. The management of a complex water quality control system is also studied. The determination of minimum-cost control policies for a basin (a multi-stage system) which receives the thermal waste from power plants and the organic waste of BOD discharges is investigated by applying the generalized reduced gradient method.