The Steady-State Case

  • Marcello Benedini
  • George Tsakiris
Part of the Water Science and Technology Library book series (WSTL, volume 70)


In the one-dimensional approach, the case of pollutant injection and river behaviour that do not depend on time is frequently considered. The integration of the fundamental differential equation is simplified and gives rise to very useful expressions for an overall assessment of water pollution. A further simplification is the case of nondispersive flow, which, applied to the BOD and DO interaction, results in the well-known Streeter and Phelps model, currently used for a first-glance evaluation of a river contamination caused by urban wastewater discharge.


Pollutant Concentration Plug Flow Pollution Transport Urban Sewage River Stretch 
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  1. Chapra SC (1997) Surface water-quality modeling. WCB-McGraw Hill, BostonGoogle Scholar
  2. Streeter HW, Phelps EB (1925) A study of the pollution and natural purification of the Ohio River. US Public Health Service. Public Health Bull 146:75Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  • Marcello Benedini
    • 1
  • George Tsakiris
    • 2
  1. 1.Water Research InstituteArea Ricerca MontelibrettiRomeItaly
  2. 2.Laboratory of Reclamation Works and Water Resources ManagementNational Technical University of Athens School of Rural and Surveying EngineeringZografou, AthensGreece

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