Browse Illinois Water Resources Center - Wastewater by Issue Date

  • Holley, E.R.; Klintworth, K.K. (University of Illinois at Urbana-Champaign. Water Resources Center, 1966-09)
    Some numerical methods are briefly described for determining vertical diffusion coefficients as a function of vertical coordinate in a turbulence vessel where there are no net velocities. It is planned to use this turbulence ...

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  • Kothandaraman, Veerasamy (University of Illinois at Urbana-Champaign. Water Resources Center, 1968-05)
    This work attempts to predict dissolved oxygen deficits in a stream with known initial conditions by taking into account the variations in deoxygenation and reaeration coefficients. A hypothetical stream situation is used ...

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  • Holley, E.R. (University of Illinois at Urbana-Champaign. Water Resources Center, 1969-07)
    Heat was used as a tracer to determine diffusion rates immediately below the free surface both in the "film" region and in the remainder of the water in a mixing vessel. The results tend to indicate that a diffusion model ...

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  • Maxwell, W. Hall C.; Pazwash, Hormoz (University of Illinois at Urbana-Champaign. Water Resources Center, 1970-01)
    An experimental and analytical study of the modification of jet flow patterns by a nearby free surface and nearby horizontal or gently downward sloping plane bed is described. The patterns were found to be radically different ...

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  • Hinomoto, Hirohide (University of Illinois at Urbana-Champaign. Water Resources Center, 1971)

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  • Smith, Gerard V. (University of Illinois at Urbana-Champaign. Water Resources Center, 1971)
    Water pollution is rapidly becoming a major problem. Through studies of the effect of ultrasound on catalysts it has been found that certain water pollutants can be oxidized or modified. This synergetic effect between ...

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  • Dajani, Jarir S.; Gemmell, Robert S. (University of Illinois at Urbana-Champaign. Water Resources Center, 1971-06)

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  • Dick, Richard, I.; Javaheri, Ali, R. (University of Illinois at Urbana-Champaign. Water Resources Center, 1972-03)
    The purpose of this study was to investigate the steady state continuous thickening of non-ideal suspensions such as sludges from water and wastewater treatment plants. Suspensions of high grade calcium carbonate, activated ...

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  • Brigham, Allison R. (University of Illinois at Urbana-Champaign. Water Resources Center, 1972-09)
    Physical, chemical, and biological parameters were monitored at five stations in the Asa Creek-Kaskaskia River system, Moultrie County, Illinois, from 12 September 1969 through 7 September 1970 to characterize these streams ...

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  • Adams, Barry J.; Gemmell, Robert S. (University of Illinois at Urbana-Champaign. Water Resources Center, 1973-07)

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  • Yen, Ben Chie (University of Illinois at Urbana-Champaign. Water Resources Center, 1973-08)
    Increasing public concern on urban storm water quantity and quality problems demands a thorough review of the methodologies for flow prediction and design of urban storm drainage systems and development of improved ...

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  • Sevuk, A. Suha; Yen, Ben Chie; Peterson, Gordon E. (University of Illinois at Urbana-Champaign. Water Resources Center, 1973-10)
    The Illinois Storm Sewer System Simulation Model is a mathematical model for sewer design and flow prediction utilizing the Saint Venant equations to route unsteady flows through tree-type sewer networks. An overlapping ...

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  • Wenzel, Harry G. (University of Illinois at Urbana-Champaign. Water Resources Center, 1973-12)
    An experimental and analytical study was performed to develop the geometry for a Venturi type flow meter for use in sewer flow measurement. The meter consists of a constriction in the pipe which produces critical flow under ...

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  • Rossman, Lewis A.; Liebman, Jon C. (University of Illinois at Urbana-Champaign. Water Resources Center, 1974-07)
    A mathematical decision model is developed which determines how a group of waste dischargers should regionalize their treatment facilities and the amount of treatment each facility should provide so that the cost of achieving ...

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  • Yen, Ben Chie; Wenzel, Harry G., Jr.; Mays, Larry W.; Tang, Wilson H. (University of Illinois at Urbana-Champaign. Water Resources Center, 1976-08)
    This report describes the development of a series of computer models capable of determining the diameter, slope and crown elevations of each sewer in a storm drainage system in which the layout and manhole locations are ...

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  • Semmens, Michael J. (University of Illinois at Urbana-Champaign. Water Resources Center, 1976-08)
    Ammonium nitrogen may be readily removed from wastewaters by means of an ammonium selective ion exchanger, clinoptilolite. The major cost in this process is the cost of regenerating the exchanger in order that it may be ...

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  • Pfeffer, John T.; Chang, Yueh (University of Illinois at Urbana-Champaign. Water Resources Center, 1977-07)
    A continuing operational problem encountered in the activated sludge system is sludge bulking. While there are several causative agents for this bulking, the filamentous bacterium Sphaerotilus is one of the more common. ...

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  • Brill Jr., E. Downey; Nakamura, Masahisa (University of Illinois at Urbana-Champaign. Water Resources Center, 1977-10)
    The Japanese government is undertaking a major program to provide additional sewage collection and treatment because of the severe water pollution that has resulted from rapid urbanization and industrialization. The program ...

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  • Nakamura, Masahisa; Brill Jr., E. Downey (University of Illinois at Urbana-Champaign. Water Resources Center, 1977-11)
    A mathematical method presented here deals with regionalization of wastewater systems, a complex public sector planning problem. The method proposed focuses on generating alternative physical plans efficiently and ...

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  • Wenzel, Harry G., Jr.; Yen, Ben Chie; Tang, Wilson H. (University of Illinois at Urbana-Champaign. Water Resources Center, 1979-06)
    This report describes further development of computer models for determining the diameter, slope and elevations of each pipe in a storm drainage system in which the layout and manhole locations are specified. The design ...

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