Browse Illinois Water Resources Center - Wastewater by Issue Date

  • 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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  • Wenzel, Harry G., Jr.; Voorhees, Michael L. (University of Illinois at Urbana-Champaign. Water Resources Center, 1981-08)
    This report describes an evaluation of the assumption commonly employed in drainage design that the return period of the rainfall used to design a system is the same as the peak flow produced by that rainfall. Specifically, ...

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  • Rittmann, Bruce E.; Brunner, Craig W. (University of Illinois at Urbana-Champaign. Water Resources Center, 1982-10)
    When wastewater is discharged to small streams, the effluent quality normally obtained from a sewage treatment plant is often not good enough to prevent serious water-quality deterioration. Hence, enhanced removal of organic ...

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  • Wang, Yi-Tin; Suidan, Makram T.; Rittmann, Bruce E. (University of Illinois at Urbana-Champaign. Water Resources Center, 1983-10)
    A completely mixed, expanded-bed, anaerobic granular activated carbon filter was operated on synthetic wastewaters in which acetate was the only organic carbon source. Steady-state performance was achieved for two influent ...

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  • Yen, Ben Chie; Cheng,Shiu-Tuang; Jun, Ryong-Iio; Voorhees, Michael L.; Wenzel, Harry G., Jr.; Mays, Larry W. (University of Illinois at Urbana-Champaign. Water Resources Center, 1984-05)
    ILSD models are sewer system models for least-cost optimal design of the entire system. ILSD-1 designs for a specified layout the size and slope of the sewers with or without detention storages with user supplied rainfall ...

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  • Tang, Chi-Chung; Brill Jr., E. Downey; Pfeffer, John T. (University of Illinois at Urbana-Champaign. Water Resources Center, 1984-11)
    A mathematical framework is developed for use in the design of a secondary wastewater treatment system. Mathematical models predicting the performance of various unit processes are used to construct a comprehensive system ...

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  • 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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  • Geselbracht, James J.; Brill Jr., E. Downey; Pfeffer, John T. (University of Illinois at Urbana-Champaign. Water Resources Center, 1986-04)
    The use of a rule-based modeling technique for the formal consideration of poorly modeled issues in a water quality management problem is illustrated in the context of wastewater treatment plant design. Sludge bulking is ...

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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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