A flowing stream has a temperature of 14°C, flow rate of 3.0 m}sec, saturated dissolved oxygen content and BODs of 15 mg/L with reaction rate constant of 0.13/day. Waste is discharged into the stream at a flow rate 0.5 m3/sec, temperature of 30°C, ultimate BOD of 50 mg/L and dissolved oxygen content of 2.5 mg/L. The discharged waste has same characteristics as the initial pollutant in the stream with the same reaction rate constant of 0.13/day. Determine: 1. Temperature of the resulting combine flow at the mixing point 2. Ultimate BOD of the combine flow at the mixing point. 3. Dissolved oxygen content in the combine flow at the mixing point.
A flowing stream has a temperature of 14°C, flow rate of 3.0 m}sec, saturated dissolved oxygen content and BODs of 15 mg/L with reaction rate constant of 0.13/day. Waste is discharged into the stream at a flow rate 0.5 m3/sec, temperature of 30°C, ultimate BOD of 50 mg/L and dissolved oxygen content of 2.5 mg/L. The discharged waste has same characteristics as the initial pollutant in the stream with the same reaction rate constant of 0.13/day.
Determine:
1. Temperature of the resulting combine flow at the mixing point
2. Ultimate BOD of the combine flow at the mixing point.
3. Dissolved oxygen content in the combine flow at the mixing point.
4. Oxygen deficit in the resulting combine flow at the mixing point.
5. Oxygen deficit and dissolved oxygen content in the stream at exactly one day after the initial mixing of the waste into in the stream if the deoxygenation
and reaeration rate constants are 0.2/day and 0.4/day, respectively.
6. Length of time in days to reach minimum oxygen content, in the stream at the same rate constants given in part e above.
7. The maximum oxygen deficit in the stream at the same rate constants given in part e above.
8. The minimum dissolved oxygen content in the stream at the same rate constants given in part e above
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