Dynamic modelling and control applications in water quality maintenance

Abstract The purpose of this paper is to develop and illustrate a unified, systematic approach to problems of water quality management. In order to achieve this a water quality system is defined as the following group of component features: the abstraction, purification, and supply of potable water from a river: consumer effluent, rainfall-runoff from an urban land surface, and the sewer network; the wastewater treatment plant: the river itself. A systems analysis approach to the study of the dynamic and control aspects of the system is discussed, with particular reference to the practical limitations of instrumentation and technology. In an attempt to blend the theory with the practice recent studies on the dynamic modelling and control of parts of the water quality system are reviewed. Special attention is paid to the practical application of techniques of system identification and parameter estimation. Finally, piecing together several individual results, it is possible to give a good indication of the manner in which control studies should be directed in the near future.

[1]  Gustaf Olsson.  Measurement and Control in Chemical and Environmental Engineering , 1974 .

[2]  F. Fallside,et al.  Hierarchical optimisation of a water-supply network , 1975 .

[3]  P. Eykhoff.  System Identification Parameter and State Estimation , 1974 .

[4]  C. R. Curds,et al.  A theoretical study of factors influencing the microbial population dynamics of the activated-sludge process—I The effects of diurnal variations of sewage and carnivorous ciliated protozoa , 1973 .

[5]  Gustaf Olsson,et al.  Control Problems in Wastewater Treatment Plants , 1973 .

[6]  M. B. Beck,et al.  A dynamic model for DO—BOD relationships in a non-tidal stream , 1975 .

[7]  John F. Andrews,et al.  Dynamic Model of the Anaerobic Digestion Process , 1969 .

[8]  Karl Johan Åström,et al.  Numerical Identification of Linear Dynamic Systems from Normal Operating Records , 1965 .

[9]  R. Kashyap,et al.  Stochastic modeling of river flows , 1974 .

[10]  Karl Johan Åström,et al.  BOOK REVIEW SYSTEM IDENTIFICATION , 1994, Econometric Theory.

[11]  I Gustavsson,et al.  Survey of applications of identification in chemical and physical processes , 1975, Autom..

[12]  J. Andrews,et al.  Dynamic modeling and simulation of the anaerobic digestion process , 1971 .

[13]  K. Åström,et al.  Numerical Identification of Linear Dynamic Systems from Normal Operating Records , 1966 .

[14]  G. Olsson.  State of the Art in Sewage Treatment Plant Control , 1976 .

[15]  Peter C. Young,et al.  The modelling and control of water quality in a river system , 1974, Autom..

[16]  Petar V. Kokotovic,et al.  A nonlinear regulator problem for a model of biological waste treatment , 1971 .

[17]  M. B. Beck.  The identification and adaptive prediction of urban sewer flows , 1977 .

[18]  F. Fallside,et al.  On-Line Prediction of Consumption for Water Supply Network Control , 1975 .

[19]  R. L. Kashyap,et al.  Real time recursive prediction of river flows , 1973 .

[20]  Ivar Gustavsson.  Parametric Identification of Multiple Input, Single Output Linear Dynamic Systems , 1969 .

[21]  C. Wells,et al.  On the practical application of "A nonlinear regulator problem for a model of biological waste treatment" , 1971 .