Environmental Engineering Reference
In-Depth Information
4.18 Summary
The study indicates Box-Jenkins and exponential time series may be suitable for
prediction of water quality.
The developed models for Mg + ,Na + ,SO 2 parameters in Zir-e-pol station (only
outlet), a TDS model in Lavark station and HCO 3 model in Roodak station
described seasonality behaviors and the rest of the models are non- seasonal.
Approximation of the trend of observations shows that the amounts of TDS, Mg + ,
Na + , and SO 2 parameters are maximum in April and minimum in September. This
may be due to a maximum amount of rainfall in early spring and diminishing rainfall
in summer.
All the developed models have p-Values above 0.9 which implies they are
excellent according to the de
nition. Comparison of predicted and observation data
for the last 6 months shows good conformity. Hence, the developed models are
proper and con
dent and may be useful tools for water quality management in inlets
and outlet of water in the dam.
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