Algal Detection & Monitoring for Water Supply, Environmental, Oceanographic & Industrial Applications

Systems to choose from include:

Algal Detection & Monitoring for Water Supply, Environmental, Oceanographic & Industrial Applications

The factors (physical, chemical and climatic) that lead to blue-green algal growth are complex and although most follow a predictable annual cycle, rapid algal growth can happen at any time. Blue-green algae can pose a serious threat to water quality, ecosystem stability, surface drinking water supplies, and public health through toxin production. Continuous monitoring is key to early detection of harmful algal blooms.

 

Over the past 20 years active fluorescence has been widely adopted by the scientific community, ecosystem managers and crop growers as a rapid and non-invasive method of estimating photosynthetic performance within a wide range of organisms, including phytoplankton (microalgae and cyanobacteria), biofilms, benthic autotrophs (corals, macroalgae and sea grasses) and terrestrial plants. The main rational for applying active fluorescence is that changes in key fluorescence parameters can reveal the early onset of chronic  and acute degradation of photosynthetic performance and subsequent growth, e.g. resulting from nutrient deficiency or the presence on one or more toxicants.

 

Our new ALGAE-Station and ALGAE-Wader sensors collects, logs and instantly displays key Chlorophyll data necessary for the management of water treatment processes. Data is collected using our highly sensitive range of miniaturised, LUX submersible sensors and are then displayed on either a wall mounted or handheld unit.

 

Over the past 15 years we have been developing an active fluorescence technique called Fast Repetition Rate (FRR) fluorometry to monitor algae populations in the open-ocean, primarily to support climate and ocean modelling.

 

Recently, however, we have been extending the technique to other applications, including water intake protection where the technique is used to detect deliberate contamination of fresh water supplies by monitoring the 'health' of the natural algal population through the FRR response. We believe there is application for FRR in monitoring the growth and productivity of a much wider range of micro or macro, algal production. Some of the areas, where we believe the technique could be applied, include: monitoring algal growth rates, optimizing algal growth conditions, monitoring potential toxic effects of nutrients, e.g. if using waste water the optimum time for harvesting. We would be very interested to talk further about the FRR technique and our latest range of compact, low cost, FRR fluorometers. So, if you think there is an application for this technique in your work or if you require any further information, please contact us.


     
 
Algae StationALGAE-Station  

The ALGAE-Wader and ALGAE-Station 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 the 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 are often associated with algae groups of a toxic nature.  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.

 

 AlgaeWadermain

ALGAE-Wader

   
       
 Act2 Lab FerryBox Systems   Act2-based laboratory and FerryBox systems: Act2 & the FastOcean FRR fluorometer can be combined to produce a highly automated system for probing oxygenic photosynthesis by phytoplankton. The Act2 system marks a big step forward in terms of both performance and functionality. For example, the incremental steps available for incident photon irradiance (E) are much smaller and cover a much larger range (up to and above full sunlight).  
       
FastOcean APD   FastOcean APD System: Fast Repetition Rate (FRR) fluorometry provides a non-intrusive and non-destructive method for probing photosynthesis by phytoplankton. The two FRR fluorometers within the FastOcean Ambient Plus Dark (APD) profiling system generate the data required to estimate the electron flux through all photosystem II (PSII) reaction centres per unit volume of sea water, on wide spatial and temporal scales. Given that Gross Primary Productivity by phytoplankton (GPP) is generally the main sink for PSII electron flux, these data can be used to estimate GPP.