Browse Illinois Water Resources Center - Wastewater by Title

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

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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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  • 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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  • 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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  • 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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  • 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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  • 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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  • 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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  • 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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  • 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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  • 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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  • 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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  • 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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  • 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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