The BOD5 value of a waste-water feed stream to an activated-sludge unit is S0 = 300 mg/l, and the effluent is desired to be S = 30 mg/l. The feed flow rate is F = 2× 10^7 l/day. For the recycle ratio of α = 0.5 and a steady-state biomass concentration of X = 5 g/l, Use the following kinetic parameters:

 

calculate Hydraulic residence time

______________

TLS Online TPP Program

#Question id: 5018

#SCPH28 | Zoology

Which event is nearest in time to the end of the period known as snowball Earth?

TLS Online TPP Program

#Question id: 5019

#SCPH06 I Botany

A major evolutionary episode that corresponds in time most closely with the formation of Pangaea was the

TLS Online TPP Program

#Question id: 5019

#SCPH28 | Zoology

A major evolutionary episode that corresponds in time most closely with the formation of Pangaea was the

TLS Online TPP Program

#Question id: 5020

#SCPH06 I Botany

Dicynodonts survived the Permian extinction and, therefore, existed during both the

TLS Online TPP Program

#Question id: 5020

#SCPH28 | Zoology

Dicynodonts survived the Permian extinction and, therefore, existed during both the

TLS Online TPP Program

#Question id: 5021

#SCPH06 I Botany

Most dinosaurs and pterosaurs become extinct at the close of the __________ era.