algae bloom monitoring Applications

Related terms for "algae bloom monitoring ": algae bloom applications

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  Monitoring of Harmful Algae Blooms

  At frst it seems impossible: how can a sensor on board of a satellite circling the earth at an altitude of some 700 kilometers not only identify the total biomass of algae in the water, but also identify species of algae. This is related to what remote sensing specialists call the refectance spectrum of the water. The spectrum is a specifc fngerprint that is created by measuring the refection of water using extremely sensitive sensors, either onboard of a satellite or inside our equipment on the ground. We use a variety of algorithms to translate refectance spectra into concentrations of specifc compounds and phytoplankton species

  By BlueLeg Monitor BV based in JG Sneek, NETHERLANDS.

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  Algae monitoring of drinking water reservoir -

  Due to green algae problems in the water reservoir of a drinking water treatment plant, the ALGcontrol was installed to continuously monitor the algae concentrations and possible toxic blue green algae blooms. During almost 4 months the ALGcontrol measured the total chlorophyll and cyano chlorophyll concentrations of the water reservoir. In order to be able to compare these results, second off-line controls were carried out using the ISO 10260 chlorophyll-a quantification (extraction into ethanol, spectrophotometric detection at 665 and 750 nm). The results of the off-line standard lab method show a good correlation with the measurements of the ALGcontrol. The good correlation can be verified as well at high as at low concentrations of total chlorophyll.

  By microLAN B.V. based in Waalwijk, NETHERLANDS.

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  Monitoring of Algae in Drinking Water

  The UniLux in-situ fluorometer can be configured to detect a number of key parameters that are of importance to the Water Supply Industry. Primarily, 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 fluorometers 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 determining the loading into water processing plants.
  
  These in-situ fluorometers are available as single parameter sensors (UniLux), or 3 channel sensors (TriLux).The CTG FastFlow fast repetition rate fluorometer provides information on the physiological state of algae it monitors. As well as providing detailed information on the growth rate of the algae (which can indicate the occurrence of a future algae bloom), it can immediately inform and alarm on toxins that have accidentally or deliberately been introduced into the water systems, as with the FastGuard system. The FastFlow differs from the FastGuard system in that it logs and displays detailed information on the state of the algae monitored for operational requirements.

  By Chelsea Technologies Group based in West Molesey, UNITED KINGDOM.