ADWANCED SEWAGE WATER TREATMENT SYSTEMS ON CRUISSE VESSELS

The purpose of this article is to show what parts they consist of and how advanced wastewater treatment system works on cruise ships. Fecal wastewater from the superstructure on ships is treated in an integrated wastewater treatment system. It is an advanced automated system consisting of several processes. The first process is the treatment of wastewater in a pre-filter where solid particles and mechanical impurities are separated from it. The next step is treatment in a bio-reactor where aerobic bacterias break down organic particles and convert it into energy and carbon dioxide. This is followed by chemical treatment in a flotation unit in which the particles react with the coagulant and polymer to form larger particles of waste material which are subsequently physically removed from the water. Towards the end of the process, the wastewater passes through a fine polishing filter that removes any residual impurities, and at the very end is disinfected with ultraviolet rays in a UV unit. Clean disinfected wastewater is stored in clean water tanks before being discharged into the sea or discharged directly into the sea. The bio-sludge processing and incineration system is used for the processing of wet sludge from the food waste processing system and from the wastewater treatment system. From the liquid sludge, water can be removed in the decanter devices, and then transfers it to the dryer by pumps in order to completely dry the precipitate, and so that it can finally be gradually dosed and burned in the incinerator. In emergencies, there is a possibility that the sludge can be pumped out from the ship.