This Eurofish project addresses challenges with water quality in the discharge from land-based recycled saltwater aquaculture facilities and will designate new treatment technologies for use in these facilities. The results will be that a larger proportion of particulate nutrients (BI5, N and P) are removed compared to common applied technology (mechanical filtration and biofiltration). We will introduce the vacuum skimming and ozonation technologies and by this we will also eliminate pathogenic bacteria, viruses and any parasites as well as degrade unwanted odours and flavours as well as eliminate any drug residues. Although these list-approved farms that we will test, lives up to the stated reduction rates for P, N and BI5, the discharged production water still contains large quantities of the substances indicated. By using the new technologies, a larger portion of the particulate matter will be transferred to the sludge phase and very small particles, including fats, will be ‘burned’ by ozonation. Overall, therefore, it is expected that the amount of water discharged will have a smaller environmental impact for the recipient. The project is funded from the Danish “Common efforts within aquaculture”. Other project partners are Sashimi Royal, Oxyguard, and Danish Technical University (environment). For more information contact projects@eurofish.dk
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