Water Industry Applications: Sensors for Water Supply and Recovery Industries

Chelsea Technologies Group manufacture and supply a wide range of in-water sensors that are applied to both process control and environmental monitoring.  The following details the systems and applications that the CTG range of sensors can be applied to within the water supply and recovery industry.  These systems use fluorescence detection techniques which offer very high sensitivities, and comprise of both portable and online solutions.

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Water Recovery        Water Supply    
             
BOD Monitoring      

Algae Monitoring

   

The BOD-Station and BOD-Wader systems enable in-line or in situ real-time reporting of Biological Oxygen Demand within both water processing plants and natural water systems.   The monitor detects fluorescent proteins that are found within sewage and slurry.  The principle behind the measurement is the excitation of Tryptophan-like fluorescence at UV wavelengths, which is highly sensitive and has been shown to correlate with Biological Oxygen Demand.  These systems can inform on how the bacterial removal systems within a Waste Water Treatment Works are performing.

  Water Industry BOD Monitoring  

The ALGAE-Wader and ALGAE-Station systems systems enable in-line or in situ real-time reporting of Algae within both water processing plants and natural water systems.  The detection of Chlorophyll a in stored water systems such as reservoirs assists in planning and informs decisions on water abstraction in relation to natural algae blooms that regularly occur throughout the year.   As well as Chlorophyll a, these in situ fluorometer systems can detect cyanobacterias, such as Phycocyanin and Phycoerythrin, which may be associated with toxic algae groups.  Knowledge of concentrations of algae within the water can assist in assessing Geosmin formation and determining the loading into water processing plants, informing on taste and odour issues.

  Water Industry Algae Moitoring 
             
Oil in Water Monitoring       Bacteria Monitoring    

The OIL-Station and OIL-Wader Systems enable in situ, real-time reporting of Polycyclic Aromatic Hydrocarbon (PAH) within Waste Water Treatment Plants.  The principle behind the measurement is the excitation of PAH fluorescence at UV wavelengths, which has been shown to correlate with PAH contamination with high sensitivity.  These systems can inform levels of PAH entering into waste water treatment works.

   Water Industry OIL Monitoring  

The BACTI-Wader and BACTI-Station systems systems enable in-line or in situ real-time reporting of Bacteria within both water processing plants and natural water systems. The monitor detects fluorescent proteins that are found within sewage and slurry.  The principle behind the measurement is the excitation of Tryptophan-like fluorescence at UV wavelengths, which is highly sensitive and has been shown to correlate with bacterial contamination.  These systems can inform on plant loading of bacteria from river abstraction, filter management and contamination within processed water tanks.

   Bacteria Monitoring
             
Turbidity Monitoring       CDOM Monitoring    

The CTG TurbiLux Station enables in-line, real-time reporting of Turbidity within Waste Water Treatment Plants.  Two alternative sensors are available for use within the Turbidity-Station, one based on back-scatter (UniLux) and one based on 90o scatter (TurbiLux).  The TurbiLux provides turbidity measurements compliant to ISO07027:1999.  Monitoring of turbidity allows operators to assess particulate removal through the Waste Water treatment process. 

   Water Industry Turbidity Monitoring  

The CDOM-Station system enables in-line, real-time, reporting of Coloured Dissolved Organic Material (CDOM) within both water processing plants and natural water systems.   The monitor detects Fluorescent Dissolved Organic Matter (FDOM) providing highly sensitive CDOM measurements that have been shown to correlate with organics within the water.  These systems can inform on assessing organic load through a works, managing disinfection by-product formation potential, coagulation control and filter management.

   Water Industry CDOM Monitoring
             
Dye Tracing       Oil in Water Monitoring    

Dye tracing operations are common in determining water retention and flow in newly commissioned or modified Waste Water Treatment Works.  CTG can offer portable systems based on the UniLux in situ fluorometer configured to measure common dyes used in dye tracing such as Rhodamine WT or Fluorescein.   The high sensitivity obtained from these sensors allows for minimum volumes and/or concentrations of these chemicals to be introduced to the plant.  These can be supplied with the CTG Hawk portable handheld data display and logger.

   Water Industry Dye Tracing Monitoring  

The OIL-Station and OIL-Wader Systems enable in situ, real-time reporting of Polycyclic Aromatic Hydrocarbon (PAH) within both water processing plants and natural water systems.  The principle behind the measurement is the excitation of PAJ fluorescence at UV wavelengths, which has been shown to correlate with hydrocarbon contamination with high sensitivity.  These systems can inform on PAH content at abstraction points and PAH contamination into processed waters tanks.

   Water Industry Oil in Water
        Turbidity Monitoring    
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The CTG TurbiLux Station enables in-line, real-time, reporting of Turbidity within both water processing plants and natural water systems.  Two alternative sensors are available for use within the Turbidity-Station, one based on back-scatter (UniLux) and one based on 90o scatter (TurbiLux).  The TurbiLux provides turbidity measurements compliant to ISO07027:1999.  Monitoring turbidity allows operators to assess loading into a plant as well as monitoring the efficiency of filters for particulate removal through the process. 

   Water Industry Turbidity Monitoring