ROW Algae Non-Contact Tracking System for Water Quality Measurement

“Algal blooms” occur when ideal temperature, nutrients and necessary light conditions are met.

  1. General Details

    Algea plants, which live in colonies in sea and fresh water, cause toxic and negative effects on humans, fish, marine mammals and birds when they multiply uncontrollably.

    Diseases caused by harmful algal blooms, although rare, can be fatal.

    The proliferation of harmful algal blooms is becoming a major environmental problem in many places, threatening not only human health and the ecological system but also posing problems for local economies.

    For this reason, effective imaging devices are needed by governments to monitor algal blooms.

    Why Chlorophyll-A detection?

    Chlorophyll-a concentration is a very important parameter used in biomass or algal measurement and evaluation of the presence of algal blooms.
    All photosynthetic organisms contain chlorophyll.
    Every type of chlorophyll contains chlorophyll-a.
    A few micrograms of chlorophyll-a per liter is considered normal.
    Between 10 and 20 μg/L is considered the presence of algal bloom.

    Why do Algal Blooms cause low oxygen in water?

    Only a small amount of the algae biomass is eaten by zooplankton, the rest is decomposed by bacteria and sinks to the bottom.
    The amount of oxygen at the bottom may decrease to a stress level for many organisms and may even cause the ecosystem in the region to deteriorate.

    Detecting harmful algal blooms by monitoring toxins

    Chlorophyll-a concentrations correlate with levels of microcystin, a toxin that has harmful effects on human health.
    In order to keep chlorophyll-a levels under control, lower concentration limits of microcystins have been determined by the US Environmental Protection Agency (USEPA) and the World Health Organization (WHO).
    For example, when the chlorophyll-a concentration is 68 μg/L, there is a 50% chance that 1 μg/L microcystin will exceed the drinking limit set by the World Health Organization.
    Therefore, continuous monitoring of chlorophyll-a variations can provide guidance for possible actions to be taken when there are significant risks of exceeding the limits.


    • Fast and convenient on-site monitoring
    • No sampling or sample preparation required
    • Non-contact, technical and maintenance-free
    • Very low error rate thanks to its advanced software

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