Reduction of discharges: Exploiting the network's storage capacities
Limit CSO spills to the receiving environment and optimise implementation costs for the project owner.
3D EAU Animation : spill reduction (in French)
1 – Dry weather
2 – Storage (moderate rain)
3 – Storage limit
4 – Spill (heavy rain)
5 – Back to normal
1. Installation in CSO chambers - Deomatic gate
The 3D EAU solution
Exploit the storage capacities of existing networks with the help of tilting gates developed and implemented by HYDRASS-3D EAU.
The water level at which the Deomatic gate opens can be adjusted according to your needs. This allows to store water during low to moderate rainfalls and discharge during heavy rains.
no impact on the network
Low or moderate rain
neglectable impact on the network
Example of a tilting gate positioned on the weir in a CSO chamber (in French):
2. Installation in a sewer - Stocko gate
In the absence of a CSO, the Stocko gate makes it possible to store low to moderate rainfalls in the upstream manifold without limiting its hydraulic capacity for heavy rainfalls.
Gate closed, no impact on the network
Low to moderate rain
Gate closed, network storage
Gate open, neglectable impact on the network
Network managers can test the hydraulic impact of the Deomatic and Stocko gates in their network models (such as SWMM, Infoworks...) using the 3D EAU tool.
In-line storage is an option to be considered in order to decrease discharges in the natural environment.
Step 1 - Feasibility study
Taking into account the existing environment of the structure.
Characterisation of the hydraulic behaviour of the future gate to guarantee a good integration in the existing environment.
Step 2 - Design and implementation
Design, manufacture and assembly in the workshop.
Physical testing on our hydraulics bench.
Step 3 - Delivery
Assistance with commissioning
Less costly than storage tanks
Mechanical system with no power requirement
Can be integrated into a hydraulic network model
Adapted to discharge measurement
A non-return valve can be fitted as needed