Sewage & Slurry Outflow Monitoring

Chelsea Technologies Group is addressing the challenges of effective monitoring of rivers, estuaries and coastal regions against outflow events from Waste Water Treatment Works and Farm Slurry.  These challenges have been driven by the EU Bathing Waters Directive, which will introduce new tighter regulation in 2015.  In addition, these new in-situ sensors have direct applications within Waste Water Treatment Works, which can benefit from improved efficiencies in direct effluent monitoring.

Applications include:

• Effluent contamination monitoring
• Combined Sewage Overflow (CSO) and Fish Kill investigations
• Grey Water / Black Water pipe cross-over
• Biological Oxygen Demand (BOD) Monitoring

Suggested product:

UviLux Effluent Monitor: The UviLux Effluent Monitor enables in-situ real time reporting of levels of sewage and BOD within both natural water systems and water processing plants.  By use of UV fluorescence, the UviLux Effluent Monitor detects protein which is inherent within sewage and slurry and provides a means of assessing concentrations of sewage and slurry in solution with unparalleled accuracy and resolution. The principle behind the measurement is based on fluorescence excitation of Tryptophan-like fluorescence, within the UV wavelength band.  Use of such fluorescence provides signal detection far superior to absorption methods currently in use.   Studies have shown that use of such fluorescence provides robust and repeatable measurements of sewage and slurry solutions, and correlates with both BOD and Bacterial Contamination.

Flexible Deployment System  
The technology adopted is the same as implemented within the established UviLux Hydrocarbon and CDOM fluorimeters, with the fluorescence excitation and emission targeted at Tryptophan like fluorescence.  The UviLux provides the user with a flexible in-situ fluorimeter that can be deployed in many scenarios from portable systems for direct measurements in rivers, canals, lakes etc, to fixed and flow through configurations for use within Waste Water Treatment Works and other industrial processing plants.

Environmental Monitoring
Direct applications for the UviLux Effluent Monitor include monitoring of rivers and estuaries for pollution events against the EU Bathing Waters Directive.  These sensors can be fitted within sentry type systems or portable systems that can be quickly mobilised when events such as CSOs occur.

Process Control within Waste Water Treatment Works
The UviLux Effluent Monitor provides a cost effective solution to monitoring processes such as efficacy of both primary and secondary treatment systems, enabling potential savings in energy budgets.  It can also take the role as a final sentry system at the outflow for discharging into sensitive water courses. In addition, the UviLux Effluent Monitor has also applications in locating cross-over of Grey Water and Black Water pipes and open water courses.