Baywood Publishing Company
0047-2433
1541-3802
Journal of Environmental Systems
BWES
300323
http://baywood.metapress.com/link.asp?target=journal&id=300323
20
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000020000419900101
Number 4 / 1990-91
CBKDQUJD4DP3
http://baywood.metapress.com/link.asp?target=issue&id=CBKDQUJD4DP3
10.2190/BUG1-BWC2-BA5Q-3RKY
BUG1BWC2BA5Q3RKY
5
Modeling River Water Quality by the Superposition Method
359
374
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20020509
20020509
20020509
BUG1BWC2BA5Q3RKY.pdf
http://baywood.metapress.com/link.asp?target=contribution&id=BUG1BWC2BA5Q3RKY
4
F.
X.
Yu
D.
D.
Adrian
V.
P.
Singh
Louisiana State University, Baton Rouge
A one-dimensional (1-D) advection-dispersion equation (ADE) with a first-order biochemical reaction was solved using the superposition method. Three sets of initial and boundary conditions were considered. The boundary condition of the model virtually can be any type of chemical or BOD concentration functions. Thus, the model accepts discrete and time-dependent input and produces a continuous concentration distribution over time and space. A simple and accurate equation was derived to calculate the upper-bound memory time of a given river. Since the model requires only a finite record-length, it can be easily updated. The model was compared with some analytical and numerical models and was found to be accurate, simple, and easy to apply.
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