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Bioprocess Engineering 2nd Edition by Fikret Kargi,Michael Shuler
Edition 2ISBN: 9780130819086Bioprocess Engineering 2nd Edition by Fikret Kargi,Michael Shuler
Edition 2ISBN: 9780130819086 Exercise 5
An activated-sludge waste treatment system is required to reduce the amount of 
from
1000 mg/l to 20 mg/l at the exit. The sedimentation unit concentrates biomass by a factor of
3. Kinetic parameters are
MLVSS/g 
The flow of waste water is 10000 l/h and the size of the treatment basin is 50,000 l.
a. What is the value of the solids residence time
b. What value of the recycle ratio must be used?
from1000 mg/l to 20 mg/l at the exit. The sedimentation unit concentrates biomass by a factor of
3. Kinetic parameters are
MLVSS/g The flow of waste water is 10000 l/h and the size of the treatment basin is 50,000 l. a. What is the value of the solids residence time
b. What value of the recycle ratio must be used?
Explanation
Verified
Verified
a) Solids (cells) residence time 
can be...
Bioprocess Engineering 2nd Edition by Fikret Kargi,Michael Shuler
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