Aging infrastructure
Approaching facility capacity
More stringent effluent permit limits
Reduce operational expenditures
All of the above
Headworks
Primary treatment
Secondary treatment
Tertiary processes
Sludge drying
Oxidation ditch
Membrane bioreactor
Rotating biological contactor
Trickling filter
High pure oxygen
Conventional activated sludge
Other
Chemical precipitation
Clarification (secondary or tertiary)
Dissolved air flotation system
Coagulation/flocculation system
Sand filtration
None of the above
TN > 10 mg/L
TN > 5 mg/L
TN > 3 mg/L
TP > 1 mg/L
TP < 0.5 mg/L
TP < 0.2 mg/L
Will not need to meet TN or TP requirements
Low
Medium
High
Yes
No