Advective sand sedimentation tank design Determination of the maximum (minimum) design flow rate

It depends on how many groups and compartments you choose to divide the sand sedimentation tank, let's say you choose 2 groups of sand sedimentation tanks, 2 compartments per group, that's 4 compartments, then your minimum flow rate is 0.75 times the maximum flow rate, that is, assuming that all the pools are working when the flow rate, and similarly the maximum flow rate is the flow rate assuming that the 3-compartment pool is overhauled.