A technology has been developed for the biological treatment of ship wastewater in the previous denitrification mode. The possibility of implementing this technology in the existing marine biological treatment equipment -aeration tanks, by minor structural changes is shown. The proposed reconstruction of existing biological wastewater treatment plants for ship wastewater will not only reduce the anthropogenic eutrophication of water bodies, but will also reduce the amount of air supplied to the installation by using oxygen nitrates in the denitrification zone and, as a result, improve the energy efficiency of the operation of the vessel.
prevention of marine pollution, ship wastewater, nitri-denitrification
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