CSO Pollution Containment Valve
The CSO Containment Valve is a low cost way for wastewater utilities to substantially reduce the level of pollution from CSO overflows caused by “First Flush”. This containment weir combines an automated pollution containment valve affixed onto either a CSO discharge pipe or headwall or affixed and modified to an existing weir structure.
For surface water pollution containment valves, please visit our sister company, Environmental Innovations for more information.
Key Features
- Can fit rectangular culvers or round pipes
- 30cm to 1.25m dia pipes
- Stainless steel construction
- Pneumatically driven actuators
- Built in safety overflow weir
- Compatible with most smart sensors and radio telemetry
- Feedback of status and position via volt free contacts
- Solar or mains operated controls
- Compatible with most smart sensors
- Built in overflow weir
- Manual open safety override
- Solid state and cyber secure controls
- Valve status reports on dashboard option
Case Study
The CSO Containment Weir is fitted to a 1m diameter outfall pile, the unit works by raising and lowering the spill point of the CSO overflow. Typically raising the spill point at the commencement of the rainfall even and then lowering it after a defined period has elapsed, after which the discharge in the main ought to contain a much-reduced level of pollution. Equally the diversion can be controlled by using the change in suspended solids at the overflow.
The height to which the weir is first raised is normally predetermined by the utilities’ network flow modellers and is set as a compromise between the risk of upstream sewer flooding and pollution reduction.
The whole can be solar operated eliminating the cost and delays of obtaining mains power. Controls can be simple too, with for example a smart level sensor detecting the rate of rise of the sewer due to rainfall that activates the timer. After the time period has elapsed and assuming the level is still raised the weir is then lowered to reduce network pressure.
Need more information?
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+44 (0)1279 600440
For technical datasheets, consultative advice and to explore our larger portfolio, our technical team of engineers are happy to help. Alternatively, you can email us at sales@radio-data-networks.com.