2. For the data a wastewater and the stream into which it is discharging, establish whether Receiving Water Standard of BOD, of less than 5 mg/L and minimum D.O of 4 mg/L can be achieved everywhere downstream of the discharge point. Wastewater flow, 0.8 m³/s; stream flow, 5 m³/s; temperatures of both discharge and stream, 15°C. The BOD of the discharge is 36 g/m³ while that of the stream is 0 g/m³, and the 20 °C K' value is 0.23 d¹¹. The D.O of the wastewater has.2 g/m³ while the stream is saturated with dissolved oxygen at 9.2 g/m³. The reaeration constant Kvalue at 15 °C is 0.4 d'¹1. You may use the following equations.
2. For the data a wastewater and the stream into which it is discharging, establish whether Receiving Water Standard of BOD, of less than 5 mg/L and minimum D.O of 4 mg/L can be achieved everywhere downstream of the discharge point. Wastewater flow, 0.8 m³/s; stream flow, 5 m³/s; temperatures of both discharge and stream, 15°C. The BOD of the discharge is 36 g/m³ while that of the stream is 0 g/m³, and the 20 °C K' value is 0.23 d¹¹. The D.O of the wastewater has.2 g/m³ while the stream is saturated with dissolved oxygen at 9.2 g/m³. The reaeration constant Kvalue at 15 °C is 0.4 d'¹1. You may use the following equations.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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![2. For the data a wastewater and the stream into which it is
discharging, establish whether Receiving Water Standard
of BOD, of less than 5 mg/L and minimum D.O of 4 mg/L
can be achieved everywhere downstream of the
discharge point.
Wastewater flow, 0.8 m³/s; stream flow, 5 m³/s;
temperatures of both discharge and stream, 15°C. The
BOD, of the discharge is 36 g/m³ while that of the stream
is 0 g/m³, and the 20 °C K' value is 0.23 d-¹. The D.O of
the wastewater has.2 g/m³ while the stream is saturated
with dissolved oxygen at 9.2 g/m³. The reaeration
constant Kvalue at 15 °C is 0.4 d-¹. You may use the
following equations.
-e-kit
Dt
Dc =
K'Lo (e-k't
K
(K₁ - K')
-Loe-ki
Lo
K₂
"
tc =
1
K₂ - K
+ Doe-k₂t
loge
K
K'
-K
[1]
Do(K₂
K'Lo
K₁ = K₂1.135 (T-20)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F783625d2-62cb-4f2d-a2ee-fa73835ca360%2Fed7ab5c7-b088-4cf1-af2b-af9545358013%2Fzhvycf6_processed.jpeg&w=3840&q=75)
Transcribed Image Text:2. For the data a wastewater and the stream into which it is
discharging, establish whether Receiving Water Standard
of BOD, of less than 5 mg/L and minimum D.O of 4 mg/L
can be achieved everywhere downstream of the
discharge point.
Wastewater flow, 0.8 m³/s; stream flow, 5 m³/s;
temperatures of both discharge and stream, 15°C. The
BOD, of the discharge is 36 g/m³ while that of the stream
is 0 g/m³, and the 20 °C K' value is 0.23 d-¹. The D.O of
the wastewater has.2 g/m³ while the stream is saturated
with dissolved oxygen at 9.2 g/m³. The reaeration
constant Kvalue at 15 °C is 0.4 d-¹. You may use the
following equations.
-e-kit
Dt
Dc =
K'Lo (e-k't
K
(K₁ - K')
-Loe-ki
Lo
K₂
"
tc =
1
K₂ - K
+ Doe-k₂t
loge
K
K'
-K
[1]
Do(K₂
K'Lo
K₁ = K₂1.135 (T-20)
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