the dimensions of each grit chamber:
Assuming width-to-depth ratio = 1: 1 , depth = 2 m
a. Width = 1 X 2 (m) = 2m
b. Length = volume/ (width*depth) = 12.996 / (2 X 2) = 3.25 m
Determining the detention time at average flow
Detention time = 12.996 M3 / 0.03610 M3/s = 6 min
Determining the air supply requirement (assume: Air supply per unit of length = 0.2 M3/m
Process Selection Considerations
Selection of an activated-sludge process for BOD removal and nitrification is a function of many considerations including specific site constraints, compatibility with the existing process, compatibility with existing equipment, present and future treatment needs, level of capability of the operating staff, capital costs, and operating cost.
Complete-mix activ