A water treatment plant has 6 settling tanks thatoperate in parallel (the flow gets split into six equal flowstreams), and each tank has a volume of 600m^3. If the flow to theplant is 10mgd, what is the retention time in each of the settlingtanks? If, instead, the tanks operated in series (the entire flowgoes first through one tank, then the second, and so on), whatwould be the retention time in each tank?
