Browse Illinois Water Resources Center - Wastewater by Title

  • Uber, James Gregory; Brill Jr., E. Downey; Pfeffer, John T. (University of Illinois at Urbana-Champaign. Water Resources Center, 1985-06)
    A method for sensitivity analysis in nonlinear programming is described and then illustrated using a least-cost model of a secondary wastewater treatment system. A sensitivity equation approach is used to calculate normalized ...

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

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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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  • 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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  • 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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  • Yen, Ben Chie; Pansic, Nicholas (University of Illinois at Urbana-Champaign. Water Resources Center, 1980-03)
    Surcharge of a sewer is the situation in which the sewer entrance and exit are submerged and the pipe is flowing full and under pressure. In this report the hydraulics of the surcharged flow as well as the open-channel ...

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

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  • Kao, Jehng-Jung; Pfeffer, John T.; Brill Jr., E. Downey; Geselbracht, James J. (University of Illinois at Urbana-Champaign. Water Resources Center, 1990-02)
    This research explores the use of computer-based environments to facilitate environmental engineering decision making. A prototype system is developed for wastewater treatment plant design as an exploration tool to demonstrate ...

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