River water quality model no. 1 (RWQM1): II. Biochemical process equations

P. Reichert, D. Borchardt, Mogens Henze, W. Rauch, P. Shanahan, L. Somlyody, P. Vanrolleghem

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Abstract

In this paper, biochemical process equations are presented as a basis for water quality modelling in rivers under aerobic and anoxic conditions. These equations are not new, but they summarise parts of the development over the past 75 years. The primary goals of the presentation are to stimulate communication among modellers and field-oriented researchers of river water quality and of wastewater treatment, to facilitate practical application of river water quality modelling, and to encourage the use of elemental mass balances for the derivation of stoichiometric coefficients of biochemical transformation processes. This paper is part of a series of three papers. In the first paper, the general modelling approach is described; in the present paper, the biochemical process equations of a complex model are presented; and in the third paper, recommendations are given for the selection of a reasonable submodel for a specific application.
Original languageEnglish
JournalWater Science and Technology
Volume43
Issue number5
Pages (from-to)11-30
ISSN0273-1223
Publication statusPublished - 2001

Keywords

  • elemental mass balance
  • nitrification
  • dissolved oxygen
  • denitrification
  • Activated sludge models
  • eutrophication
  • water quality models
  • river

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