Author(s)

G. Vaes & J. Berlamont

Abstract

Ideally, for emission calculations long term dynamic simulations should be performed, but this requires long calculation times. Simplifications are consequently necessary. Due to the non-linear behaviour of sewer systems, it is difficult to find a direct relationship between the input (rainfall) and the output (overflows) of a combined sewer system. Since continuity always has to be fulfilled, the sewer system storage is the key parameter. Simplified models make use of storage/throughflow-relationships to characterize sewer systems. For a number of real sewer systems storage/throughflow-relationships were determined under different rainfall conditions. Although the rainfall conditions varied considerably, the storage/throughfiow-relationships seem to re

Keywords