Determine required cstr volume and hydraulic residence time

Assignment Help Civil Engineering

Reference no: EM13316826

Design a CSTR to provide pre-treatment for an industrial wastewater that flows at a rate of 1000 gpm (gallons per minute) with a phenol concentration of 200 mg/l. Phenol undergoes a first-order decay reaction in the CSTR with rate constant, k = 0.50 hr^-1. The current industrial pre-treatment permit for Phenol is 20 mg/l. The permit limitation may be changed, either higher or lower, in the future.

Determine the required CSTR volume, V (gallons), and hydraulic residence time, t = V/Q (hours), to comply with the current industrial pre-treatment permit limitation for phenol.

Plot a graph with CSTR effluent phenol concentration (mg/l) along the vertical axis as a function of CSTR hydraulic residence time, t (hours), on the horizontal axis for assessing the impact of changes in the permit limitation. Comment on a type of "Law of Diminishing Returns" on effluent phenol concentration versus 't' that applies to CSTR design for first-order decay reactions.

Reference no: EM13316826

Questions Cloud

What is the maximum kinetic energy of the block : A block weighing 15.0 N is attached to the lower end of a vertical spring (k = 122.0 N/m), What is the maximum kinetic energy of the block as it oscillates

What would be the utilized the best in todays industry : Which of the security enhancements do you think is the most important, and why and dDiscuss your thoughts on what would be the utilized the best in today's industry. Do you feel it is ground-breaking technology?

Determine by trigonmetry the magnitude and direction : knowing that both members are in compression and that the force is 15 KN in member A and 10 KN in member B, determine by trigonmetry the magnitude and direction of the resultant of the force applied to the bracket by member A and B.

How did the waiter get the water into the glass : A man in a restaurant asked a waiter for a juice glass, a dinner plate, water, a match, and a lemon wedge. How did the waiter get the water into the glass

Determine required cstr volume and hydraulic residence time : Phenol undergoes a first-order decay reaction in the CSTR with rate constant, k = 0.50 hr^-1. The current industrial pre-treatment permit for Phenol is 20 mg/l. The permit limitation may be changed, either higher or lower, in the future.

Determine the tension in each rope using strongback beam : The uniform load has a mass of 400 and is lifted using a uniform 40- strongback beam and four ropes. determine the tension in each rope

What methods would you use to implement that training : Discuss the importance of documentation in applications development. Why are the four types of documentation important regardless of the size of the project?

How much does she get to keep after paying off the loan : A year after buying her car, Anita has been offered a job in Europe. Her car loan is for $15,000 at a 9% nominal interest rate for 60 months. If she can sell the car for $12,000, how much does she get to keep after paying off the loan

What is the radial component of convective acceleration : when their spacing is h, what is the radial component of convective acceleration at the section just inside the edge of the disk (section A) in terms of D, V, and h. assume uniform velocity distribution across the section.

User Account

All Pages