You have been treating a wastewater with bacteria that have the following kinetic coefficients: k= 16 mg BODL/mg VSS-day Ks = 10 mg BODL/1 b =0.2/day Y = 0.35 mg VSS/mg BODL fa=0.8 A genetic engineer comes to you and claims he can "fix" your bacteria so they are more efficient. The fixed bacteria will have b=0.05/day and fa= 0.95, while all other coefficients are the same. Using a chemostat reactor, you were successfully using a safety factor of 30, and you plant to continue doing so. How would the genetic engineers plan affect your sludge production and oxygen requirements? Assume Xº=0, Sº=200 mg BODL/1). In what ways are the new bacteria more efficient?

You have been treating a wastewater with bacteria that have the following kinetic coefficients: k= 16 mg BODL/mg VSS-day Ks = 10 mg BODL/1 b =0.2/day Y = 0.35 mg VSS/mg BODL fa=0.8 A genetic engineer comes to you and claims he can "fix" your bacteria so they are more efficient. The fixed bacteria will have b=0.05/day and fa= 0.95, while all other coefficients are the same. Using a chemostat reactor, you were successfully using a safety factor of 30, and you plant to continue doing so. How would the genetic engineers plan affect your sludge production and oxygen requirements? Assume Xº=0, Sº=200 mg BODL/1). In what ways are the new bacteria more efficient?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Biological Processes

Biological solid waste includes bacterial and contaminated waste produced by living individuals. Its treatment is essential to prevent the spread of any air-borne or water-borne diseases or diseases transmitted from one organism to another in a food chain. There are many benefits of the biological solid waste treatment and some of them are: the minimized quantity of waste substance, waste control, eradicating any disease-causing pathogens, generation of biogas, composting, anaerobic digestion, bio drying, mechanical biological treatment, microbial fuel cell, phytoremediation, and biofiltration. The final products of the biological solid waste treatment may be recycled to obtain organic fertilizers or disposed of in SWDS (Solid Waste Disposal Site) after proper treatment.

Question

You have been treating a wastewater with bacteria that have the following kinetic
coefficients:
k= 16 mg BODL/mg VSS-day
Ks = 10 mg BODL/1
b =0.2/day
Y = 0.35 mg VSS/mg BODL
fa=0.8
A genetic engineer comes to you and claims he can "fix" your bacteria so they are more
efficient. The fixed bacteria will have b=0.05/day and fa= 0.95, while all other
coefficients are the same. Using a chemostat reactor, you were successfully using a safety
factor of 30, and you plant to continue doing so. How would the genetic engineers plan
affect your sludge production and oxygen requirements? Assume Xº=0, Sº=200 mg
BODL/1). In what ways are the new bacteria more efficient?

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