Seawater quality monitoring

Since the reliability of gas turbines in the power industry has been lower than desired in recent years because of hot-corrosion problems, techniques have been developed to detect and control the parameters that cause these problems. By monitoring the water content and corrosive contaminant in the fuel line, any changes in fuel quality can be noted and corrective measures initiated. The concept here is that Na contaminants in the fuel are caused from external sources such as seawater thus, by monitoring water content, Na content is automatically being monitored. This on-line technique is adequate for lighter distillate fuels. For heavier fuels, a more complete analysis of the fuel should be carried out at least once a month using the batch-type system. The data should be input directly to the computer. The water and corrosion detecting systems also operate in conjunction with the batch analysis for the heavier fuels. 

Aquaculture in ponds and other enclosures, and mariculture in enclosures in seawater, produce shellfish, crustaceans and fish for human consumption. It is therefore of vital importance (for the organisms and for the consumers) that the water quality is optimal, and regular testing is essential to prove that pollution is absent. BEWS are very suitable to carry out this task, as several test organisms belong to the same group as the cultured species mussels, oysters, clams and fish. There seems no reason why other BEWS could not perform in freshwater aquaculture systems as well. BEWS not only monitor the quality of the ambient water in aquaculture farms, but may also be used to optimize production. Stressed animals are less productive in terms of e.g. growth... 

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