Overflow monitoring: evaluation of spillage from a major combined sewer overflow

Challenge
Continuous measurement of the volume discharged by a geometrically or hydraulically complex combined sewer overflow

The 3D EAU solution
Evaluation of the overflow rate, using non contact water level measurement and CFD modelling of the flows
Determination of a site-specific head-discharge relationship considering its geometric and hydraulic properties with a quantified uncertainty
Visualisation of the structure in operation in its hydraulic environment, in order to
understand the flow and determine the most appropriate position for the sensor

Advantages
-
Improved understanding of how the CSO works
-
Increasing the reliability of the instrumentation, with simpler and safer maintenance requirements
-
Cost optimisation of investment and operation (savings ≈ 4 k€/year/system)
-
Flexible model for easy evaluation of the effects of geometric optimisations of the CSO on the flow
-
Solutions for complex hydraulic problems
