Dynamic model of the oxygen regime of a reservoir

Conclusions

• 1. The developed dynamic model of the oxygen regime of the reservoir is in essence the next modification of the classical steady-state Streeter-Phelps model proposed for describing the interaction between dissolved oxygen and BOD on the river stretch.

• 2. Underlying the given modification is the use, in the Streeter-Phelps model, of a dynamic ideal mixer model for describing the process of movement of water in the reservoir, unlike a river stretch, on a steady-state ideal displacement model and consideration of certain additional oxygen sources and sinks having a determining effect on the oxygen regime of the reservoir and related mainly to the production and destruction (mineralization) of phytoplankton as well as to the inflow of river and wastewaters and oxygen consumption by bottom deposits.

• 3. The proposed dynamic model includes the main (numerical) and simplified (analytical) methods of calculating the oxygen regime of a reservoir, the practical use of which for calculating and predicting this regime in particular operating and planned reservoirs showed that they give similar results and, consequently, can be used jointly or independently of one another.