TYPES OF FLOW EQUALIZATION
a. In- line equalization : In this case, all the flow passes through the equalization basin and helps in achieving reducing fluctuations in pollutant concentration and flow rate.
b. Off- line equalization : In this case, only over-flow above a predetermined value is diverted into the basin. It helps in reducing the pumping requirements. In this method of equalization, variations in loading rate can be reduced considerable. Off-line equalisation is commonly used for the capture of the “first flush” from combined collections systems.
Required reaction volume = Max. of |(A-B)|