10.2190/08WU-WLW3-NLL1-MYN1 08WUWLW3NLL1MYN1 6 A Mathematical Model for the Activated Sludge Process at the Detroit Wastewater Treatment Plant 279 290 20020509 20020509 20020509 20020509 08WUWLW3NLL1MYN1.pdf http://baywood.metapress.com/link.asp?target=contribution&id=08WUWLW3NLL1MYN1 3 D. P. Lin C. Lin L. H. Lin Tring Environmental Services, Detroit, Michigan A model based on the balance of mass conversion rate is developed to simulate the function of aeration tanks at the Detroit Wastewater Treatment Plant. Runge Kutta fourth order numerical analysis is employed to compute effluent soluble BOD and mix-liquor VSS with designed experimental parameters. A fairly good agreement with low standard error of estimates between the calculated and experimental data is obtained. The model is able to not only predict at least forty-eight hours period of BOD and VSS; but also explain several features in activated sludge process such as return sludge, shock loading, steady state, and more importantly its dynamic nature. G. T. Diagger, and C. P. L. Grady, A model for the Bio-oxidation Process Based on Product Formation Concepts, <i>Water Res., 11</i>, pp. 1049-1057, 1977. A. F. Gaudy, Jr., R. Srinivasaraghavan, and M. Saleh, Conceptual Model for Activated Sludge Processed, <i>J. Envir. Eng. Div., ASCE 103</i>, pp. 71-85, 1977. D. P. Lin, C. Leen, and P. Cooper, Kinetics and Statistical Approach to Activated Sludge Sedimentation, <i>J. Wat. Pollution Control Fed., 51</i>, pp. 1919-1924, 1979. J. H. Sherrad, Kinetics and Stoichiometry of Completely Mixed Activated Sludge, <i>J. Wat. Pollution Control Fed., 49</i>, pp. 1968-1975, 1977. R. W. J. Brett, R. I. Kermode, and B. G. Burrus, Feed Forward Control of an Activated Sludge Process, <i>Water Res., 7</i>, pp. 525-535, 1973. R. E. Roper, Jr., and C. P. L. Grady, Jr., Activated Sludge Hydraulic-Control Techniques Evaluation by Computer Simulation, <i>J. Wat. Pollution Control Fed., 46</i>, pp. 2565-2578, 1978. L. T. Fan, P. S. Shah, N. C. Pereira, and L. E. Erickson, Dynamic Analysis and Optimal Feedback Control Synthesis Applied to Biological Waste Treatment, <i>Water Res., 7</i>, pp. 1609-1641, 1973. C. H. Chiang, Process Stability of Activated Sludge Process, <i>J. Envir. Eng. Div., ASCE 103</i>, pp. 259-271, 1977. F. M. Saunders, Activated Sludge, <i>J. Wat. Pollution Control Fed., 50</i>, pp. 1076-1092, 1978. H. A. Thomas, Jr., Graphical Determination of BOD Curve Constants, <i>Wat. and Sewage Works, 97</i>, pp. 123-124, 1950. G. Teissier, Quantitative Laws of Growth, <i>Ann Physiol. Physicochim. Biol., 12</i>, pp. 527-586, 1936. B. Hiltman, Modeling Microbial Growth in Wastewater Treatment, <i>J. Wat. Pollution Control Fed., 47</i>, pp. 843-850, 1975. W. W. Eckenfelder, Jr., Industrial Water Pollution Control, p. 191, McGraw-Hill, New York, 1966. J. T. O'Rourke, Kinetics of Anaerobic Treatment at Reduced Temperature, Ph.D. dissertation, Stanford University, Stanford, Calif., 1968. H. Heukelekian, H. E. Orford, and H. Manganelli, Factors Affecting the Quantity of Sludge Production in the Sludge Process, <i>Sewage and Ind. Wastes, 23</i>, pp. 945-958, 1951. P. L. McCarty, Kinetics of Waster Assimulation in Anaerobic Treatment, Developments in Industrial Microbiology, <i>Am. Inst. of Biol. Sci., 7</i>, pp. 219-230, 1966. D. Thirumurthi, Design Principles of Waste Stabilization Ponds, <i>J. Sanitary Eng. Div., ASCE, 95</i>, SA2, pp. 311-330, 1969.