Published by:
CGP EDU Academic Team
Published on: August 21, 2026
Which is correct sequence for purification process of STPs?
A
Primary Sludge 
Effluent 
Flocs 
Activated Sludge 
Biogas
Effluent Flocs Activated Sludge Biogas
B
Flocs 
Primary Sludge 
Effluent 
Activated Sludge 
Biogas
Primary Sludge Effluent Activated Sludge Biogas
C
Primary Sludge 
Effluent 
Activated Sludge 
Flocs 
Biogas
Effluent Activated Sludge Flocs Biogas
D
Effluent 
Flocs 
Primary Sludge 
Activated sludge 
Biogas
Flocs Primary Sludge Activated sludge Biogas
Text Solution
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