A Simulation of the Oxygen Profile in the Han River

The stochastic profile of variability of biochemical oxygen demand (BOD) and dissolved oxygen (D0) in the Han River has been considered with Streeter-Phelp's equation.

According to the nature of the Han River, the BOD removal coefficient, K₁, and the reaeration coefficient, K₂ values, were calculated at an average of 0.157 and 0.97 respectively at 20℃ in the spring.

Where the levels of BOD would be high in relation to the standard of water quality, the treatment for sewage and industrial wastes from tributaries of Seoul City should be performed with proper efficiency. Before 1985 plants with 90% efficiency should be installed at every outlet of the tributaries. The level of DO is not a relevant parameter to assess the pollution in the Han River. The description of the oxygen profile of the Han River also suggests monitoring points for inspection of water quality.