Page 29 - SIMPLIFIED WASTEWATER TREATMENT FUNDAMENTALS\ Advanced Activated Sludge P3

SRT vs MCRT cont.

Applied MCRT Example

Factors: Flow 1.0 MGD

Aeration Basin Volume 430,100 gallons Aeration Basin MLVSS 2,350 mg/L

Secondary Clarifier Volume 60 x 14 = 295,939 gal ÷ 14 ft = 21,138 gallons/ft

Secondary Clarifier DOB = 4 ft

WAS TSS 5,600 mg/L WAS 75,000 GPD

Effluent Flow 1.5 MGD Effluent TSS 4.0 mg/L

Aeration 8,430 lbs + Secondary Clarifier 3,949 lbs

WAS 3,503 lbs + Effluent 33 lbs

Total Biomass 12,379 lbs = 3.5 Day MCRT

Total WAS 3,536 lbs