Abstract
A method has been developed for equalizing the flow by using normally unutilized volumes in main sewers and tunnels as temporary storage for excess flow. This is achieved by installation of damming elements, and flow regulators, at certain points in the network. A basic flow is always discharged through the flow regulator, computed to obtain a favorable use of the storage volume and to maintain a satisfactory self-cleaning of the sewers. At water levels up to the center of the sewer, only this basic flow is discharged, while excess flow is stored upstream from the regulator. Above the center of the sewer a discharge starts over four triangular outlets in the regulator. At full flow the discharge is practically the same as the pipe capacity without a flow regulator. The regulator has no moving parts and requires no electric power.
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