Homework Help is Here – Start Your Trial Now!
Engineering
Civil Engineering
Determine the critical time te (days) for the DO of the river. Calculate the minimum DO concentration Domin (mg/L) of the river. Draw and label properly the DO Sag Curve of the river. Is the assimilative

Determine the critical time te (days) for the DO of the river. Calculate the minimum DO concentration Domin (mg/L) of the river. Draw and label properly the DO Sag Curve of the river. Is the assimilative

Residential Construction Academy: House Wiring (MindTap Course List)
Residential Construction Academy: House Wiring (MindTap Course List)
5th Edition
ISBN:9781337402415
Author:Gregory W Fletcher
Publisher:Gregory W Fletcher
Chapter11: Cable Installation
Section: Chapter Questions
Problem 13RQ
See similar textbooks
icon
Related questions
icon
Concept explainers
Question
Streeter-Phelps Model: kaba (e-Rt – e-kt) + Da(e-k) k. - ka 1 In k, – ka k„ – k. D = to ka La 1.135 T4 – 20 3.9 u0.5 BOD, = L, (1– e-kat) k = k20 6T-20 kr,20 1.056 T 20 – 30 %3D | h1.5 1.024 Wastewater is being discharged into Diliman River, both waters having a temperature of 20 °C. After mixing, it was found that the initial ultimate BOD of the mixed water is 15 mg/L. The DO in the Diliman River right after the mixing point is at saturation. At 20 °C, the deoxygenation rate constant (ka) is 0.3/day while the reaeration rate constant (k,) is 0.5/day. Express your computed values in at least four (4) significant figures. 1A. Determine the critical time t. (days) for the DO of the river. 18. Calculate the minimum D0 concentration DOmin (mg/L) of the river. 1C. Draw and label properly the DO Sag Curve of the river. Is the assimilative capacity of the river restricted? Explain your answer. Saturation Values of DO in Freshwater exposed to specific saturated vapor pressure Temperature (°C} Dissolved Oxygen (mg/L) 14.62 12.77 10 11.29 15 10.08 20 9.09 25 8.26 30 7.56
Transcribed Image Text:Streeter-Phelps Model: kaba (e-Rt – e-kt) + Da(e-k) k. - ka 1 In k, – ka k„ – k. D = to ka La 1.135 T4 – 20 3.9 u0.5 BOD, = L, (1– e-kat) k = k20 6T-20 kr,20 1.056 T 20 – 30 %3D | h1.5 1.024 Wastewater is being discharged into Diliman River, both waters having a temperature of 20 °C. After mixing, it was found that the initial ultimate BOD of the mixed water is 15 mg/L. The DO in the Diliman River right after the mixing point is at saturation. At 20 °C, the deoxygenation rate constant (ka) is 0.3/day while the reaeration rate constant (k,) is 0.5/day. Express your computed values in at least four (4) significant figures. 1A. Determine the critical time t. (days) for the DO of the river. 18. Calculate the minimum D0 concentration DOmin (mg/L) of the river. 1C. Draw and label properly the DO Sag Curve of the river. Is the assimilative capacity of the river restricted? Explain your answer. Saturation Values of DO in Freshwater exposed to specific saturated vapor pressure Temperature (°C} Dissolved Oxygen (mg/L) 14.62 12.77 10 11.29 15 10.08 20 9.09 25 8.26 30 7.56
Expert Solution
steps

Step by step

Solved in 2 steps with 1 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Field Applications of Hydraulic Conductivity
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Residential Construction Academy: House Wiring (M…
Residential Construction Academy: House Wiring (M…
Civil Engineering
ISBN:
9781337402415
Author:
Gregory W Fletcher
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS