What is the retention time considered for the aerobic zone for the Virginia Initiative Plant treatment process for removing phosphorus?

Richard Larsen

New member
What is the retention time considered for the aerobic zone for the Virginia Initiative Plant treatment process for removing phosphorus?
A. 3-5 hrs
B. 7-9 hrs
C. 1-2 hrs
D. 4-6 hrs
 

Ryan Clark

New member
Answer: c
Explanation: The retention time considered for the anaerobic zone for the Virginia Initiative Plant treatment process for removing phosphorus is 1-2 hrs. The MLSS level maintained is 2000-4000 mg/L. The internal recirculation considered is 100-200% for the anoxic tank.
 
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