. A wastewater treatment plant treats industrial waste and discharges 5.0 x 10-6 M benzene (C6H6) at a flowrate of 8 m3 /s into a 1.0 x 109 m3 lake. The stream feeding the lake has a benzene concentration of 1.0 μg/L and a flowrate of 100 m3 /s. Benzene has a natural decay rate of 0.038day-1.a) What is the concentration of benzene in the downstream? What is the maximum contaminant limit (MCL) for benzene? Does the concentration you calculated meet the MCL set by the Safe Drinking Water Act?b) If the standard is exceeded, by how many μg/L of benzene in the wastewater effluent will the treatment plant need to reduce?

Question
Asked Feb 15, 2020
48 views

. A wastewater treatment plant treats industrial waste and discharges 5.0 x 10-6 M benzene (C6H6) at a flowrate of 8 m3 /s into a 1.0 x 109 m3 lake. The stream feeding the lake has a benzene concentration of 1.0 μg/L and a flowrate of 100 m3 /s. Benzene has a natural decay rate of 0.038
day-1.
a) What is the concentration of benzene in the downstream? What is the maximum contaminant limit (MCL) for benzene? Does the concentration you calculated meet the MCL set by the Safe Drinking Water Act?
b) If the standard is exceeded, by how many μg/L of benzene in the wastewater effluent will the treatment plant need to reduce?

check_circle

Expert Answer

Step 1

The given data is shown below:

Civil Engineering homework question answer, step 1, image 1

Step 2

Concentration of benzene in a lake

Civil Engineering homework question answer, step 2, image 1

Step 3

a) Concentration of benzene in the downstream is given by

Civil Engineering homework question answer, step 3, image 1

...

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Engineering

Civil Engineering

Related Civil Engineering Q&A

Find answers to questions asked by student like you
Show more Q&A
add
question_answer

Q: A piece of lumber dries in service from 50 percent moisture content to 10 percent. What is the expec...

A: The expected shrinkage of a soil is given by its shrinkage index. The shrinkage index is the differe...

question_answer

Q: Discuss and conclude Ultrasonic Pulse Velocity Test.

A: Ultrasonic pulse velocity testThis test is based on the principle that Velocity of sound in a solid ...

question_answer

Q: KN/1 with OCR = 2, undrained shear strength = 60 plasticity index tion to the underlying soil is 80....

A: Following is the given informationFor an elastic material, the Bulk modulus (K) and Young’s modulus ...

question_answer

Q: 1.Three phases of a soil element? 2.Define volumetric relations (equation and text):e= , n=, S= 3. D...

A: Hey, since there are multiple questions posted, we will answer first four questions only. If you wan...

question_answer

Q: 5 ft 7.84 Find the smallest angle B for which the uniform crate can be tipped about corner A. Also c...

A: Show the free body diagram of the uniform crate as in Figure (1).

question_answer

Q: Please refer to the attached image. For the attached case study, do the following: a. Label the foll...

A: For uderstanding the above label diagram let's understand first bernoulli's equation and their terms...

question_answer

Q: Determine the forces in members AC and AD of the truss.

A: Drawing free body diagram:

question_answer

Q: hydrology 4

A: The following data is given:

question_answer

Q: 4.15 The 480-kg bent bar ABC of uniform cross section is supported by a pin at A and a vertical cabl...

A: Free body diagram is given below