Given the following data, what is the SRT of this activated sludge plant?
- Plant flow = 0.575 mgd
- MLSS = 3,500 ppm
- Aeration tank dimensions = 100 ft long, 25 ft wide and 14 ft deep
- WAS volume = 14,000 gpd
- WAS concentration = 1% total solids
- Effluent TSS = 2.5 ppm