River Water Quality Modelling: II. Problems of the Art

Water Science and Technology - Tập 38 Số 11 - Trang 245-252 - 1998
Peter Shanahan1, Mogens Henze2, L. Koncsos3, Wolfgang Rauch2, Peter Reichert4, L. Somlyódy3, Peter A. Vanrolleghem5
1HydroAnalysis Inc., 481 Great Road, Acton MA 01720, USA
2Department of Environmental Science and Engineering, Technical University of Denmark, Building 115, 2800 Lyngby, Denmark
3Budapest University of Technology, Müegyetem rkp. 31111 BudapestHungary
4EAWAG, 8600 Dübendorf, Switzerland
5BIOMATH Department, University Gent, Coupure links 653, 9000 Gent, Belgium

Tóm tắt

The U.S. EPA QUAL2E model is currently the standard for river water quality modelling. While QUAL2E is adequate for the regulatory situation for which it was developed (the U.S. wasteload allocation process), there is a need for a more comprehensive framework for research and teaching. Moreover, QUAL2E and similar models do not address a number of practical problems such as stormwater flow events, nonpoint source pollution, and transient streamflow. Limitations in model formulation affect the ability to close mass balances, to represent sessile bacteria and other benthic processes, and to achieve robust model calibration. Mass balance problems arise from failure to account for mass in the sediment as well as in the water column and due to the fundamental imprecision of BOD as a state variable.

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Water Science and Technology

Tập 38 Số 11

245-252

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