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