Do Q2: A municipal wastewater treatment plant discharges secondary condition occurs in the summer when the treated wastewater in summer is found to have a maximum flow rate of 10000 m³/day, a BODs of 30 mg/L, dissolved oxygen concentration of 1.5 mg/L and temperature of 25°C. At upstream of the disposal point the minimum flow in the stream is 0.65 m³/sec with BODs of 3.0 mg/L, dissolved oxygen concentration of 7.0 mg/L and temperature of 22°C. The mixing of wastewater and stream is almost instantaneous at the point of disposal and velocity of the mixture is 0.2 m/sec. The reaeration constant is estimated to be 0.4 per day at 20°C the dissolved oxygen sag curve a (100-km) (D20,40,50,75,100) temperature. Determine and sketch reach of the stream below the discharge?.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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Q2: A municipal wastewater treatment plant discharges secondary effluent to a river. The worst
condition occurs in the summer when the treated wastewater in summer is found to have a
maximum flow rate of 10000 m³/day, a BODs of 30 mg/L, dissolved oxygen concentration of 1.5
mg/L and temperature of 25°C. At upstream of the disposal point the minimum flow in the stream is
0.65 m³/sec with BODs of 3.0 mg/L, dissolved oxygen concentration of 7.0 mg/L and temperature of
22°C. The mixing of wastewater and stream is almost instantaneous at the point of disposal and
velocity of the mixture is 0.2 m/sec. The reaeration constant is estimated to be 0.4 per day at 20°C
the dissolved oxygen sag curve a (100-km) (D20,40,50,75,100)
temperature. Determine and sketch
reach of the stream below the discharge?.
Do
Transcribed Image Text:Q2: A municipal wastewater treatment plant discharges secondary effluent to a river. The worst condition occurs in the summer when the treated wastewater in summer is found to have a maximum flow rate of 10000 m³/day, a BODs of 30 mg/L, dissolved oxygen concentration of 1.5 mg/L and temperature of 25°C. At upstream of the disposal point the minimum flow in the stream is 0.65 m³/sec with BODs of 3.0 mg/L, dissolved oxygen concentration of 7.0 mg/L and temperature of 22°C. The mixing of wastewater and stream is almost instantaneous at the point of disposal and velocity of the mixture is 0.2 m/sec. The reaeration constant is estimated to be 0.4 per day at 20°C the dissolved oxygen sag curve a (100-km) (D20,40,50,75,100) temperature. Determine and sketch reach of the stream below the discharge?. Do
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