A meat processing factory's raw effluent has a five day BOD at 20°C of 1760 mg/l. If the k value is 0.15/day determine the BOD at two and four days at 20°C. a. A stream with a flow of 1.7 m/s and BOD 3.4 mg/l is saturated with DO (9.27 mg/l at 20°C). It receives a treated effluent discharge from a cocoa processing factory of BOD 6780 kg/day and DO of 5.0 mg/l. The BOD of the stream immediately after mixing is 7.6 mg/l. The DO at a point 36 km downstream is 7.20 mg/l. The average velocity of the stream flow is 0.2 m/s. Determine the flow and the BOD in mg/l of the treated effluent discharged from the cocoa processing factory into the stream. Assume the temperature is 20°C throughout, kı for effluent/water mixture is 0.1/day, k2 for stream is 0.4/day. b.
A meat processing factory's raw effluent has a five day BOD at 20°C of 1760 mg/l. If the k value is 0.15/day determine the BOD at two and four days at 20°C. a. A stream with a flow of 1.7 m/s and BOD 3.4 mg/l is saturated with DO (9.27 mg/l at 20°C). It receives a treated effluent discharge from a cocoa processing factory of BOD 6780 kg/day and DO of 5.0 mg/l. The BOD of the stream immediately after mixing is 7.6 mg/l. The DO at a point 36 km downstream is 7.20 mg/l. The average velocity of the stream flow is 0.2 m/s. Determine the flow and the BOD in mg/l of the treated effluent discharged from the cocoa processing factory into the stream. Assume the temperature is 20°C throughout, kı for effluent/water mixture is 0.1/day, k2 for stream is 0.4/day. b.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Solve a and b
Transcribed Image Text:A meat processing factory's raw effluent has a five day BOD at
20°C of
1760 mg/l. If the k value is 0.15/day determine the BOD at two and
four days at 20°C.
a.
A stream with a flow of 1.7 m/s and BOD 3.4 mg/l is saturated
with DO (9.27 mg/l at 20°C). It receives a treated effluent discharge
from a cocoa processing factory of BOD 6780 kg/day and DO of 5.0
mg/l. The BOD of the stream immediately after mixing is 7.6 mg/l.
The DO at a point 36 km downstream is 7.20 mg/l. The average
velocity of the stream flow is 0.2 m/s. Determine the flow and the
BOD in mg/l of the treated effluent discharged from the cocoa
processing factory into the stream. Assume the temperature is
20°C throughout, kı for effluent/water mixture is 0.1/day, k2 for
stream is 0.4/day.
b.
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