What is the first-order rate constant for decay of bod

Assignment Help Civil Engineering

Reference no: EM13309179

A 1.0 × 106 gallon reactor is used in a sewage-treatment plant. The influent biochemical oxygen demand (BOD) concentration is 100 mg/L, the effluent BOD concentration is 25 mg/L, and the flow rate through the reactor is 500 gal/min.

(a) What is the first-order rate constant for decay of BOD in the reactor? Assume that the reactor can be modeled as a comply mixed flow reactor (CMFR). Report your answer in units of per hour.

(b) Assume that the reactor should be modeled as a plug flow reactor (PFR) with first-order decay, not as a CMFR. In that case, what must the first-order decay rate constant be within the PFR reactor?

Reference no: EM13309179

Questions Cloud

Program management life cycle : The program management life cycle was developed to not only ensure successful realization of organizational/program strategies but also to create a process to plan, identify, and resolve specific cost, schedule, or quality problems associated with th..

Find the expression for the angle theta : A vertically positioned charged disk of radius R contains a unfirom positive charge density sigma. Find the expression for the angle theta made between the disk edge and the length L

How to developing a class for sorting and searching : This assignment will give you practice in developing a class for sorting and searching,with a specific application in mind. The class methods can mostly be implementedby adapting algorithms which you have seen.

Compute how long does it take the sound to travel that far : A huge explosion is heard 69.5 miles away. How long does it take the sound to travel that far

What is the first-order rate constant for decay of bod : A 1.0 × 106 gallon reactor is used in a sewage-treatment plant. The influent biochemical oxygen demand (BOD) concentration is 100 mg/L, the effluent BOD concentration is 25 mg/L, and the flow rate through the reactor is 500 gal/min.

What is the wavelength of this sound in air : A test tone used on a radio has a frequency of 974 Hz. What is the wavelength of this sound in air at normal room temperature

Estimate the change in internal energy of the air : The air inside a bicycle tire pump has 221 joules of work done on it as 60.1 joules of heat is conducted away from it

About in the radioactive waste problem : What changes would be brought about in the radioactive waste problem if all of the electric energy in the United States were produced by fusion reactors?

Definition of leadership is considered method neutral : This definition of leadership is "method neutral " It incorporates a continuum of prescriptive and participative approaches. For example, on the prescriptive end of the spectrum, the leader: (1) recognizes the problem or opportunity, (2) defines it, ..

User Account

All Pages