Abstract
Marine pollution from wastewater is a problem especially pronounced on large cruise ships. There is a great disproportion in quality of discharged wastewater directly related to the type of wastewater treatment system installed on cruise ships. To obtain exact empirical data case study was done which included one-year monitoring of cruise ships in the Adriatic Sea, their routes and retention times in defined navigation zones. The aim of this paper is to present data related to the coastal sea area of the Republic of Croatia and display results of marine pollution for that area. The scientific contribution of the research can be recognized in the evaluation of pollution of coastal areas in the Republic of Croatia in different scenarios of wastewater discharge and identification of gray water as a pollutant which is not recognized by the international legal regulations.
Highlights
Previous studies in the world have proven that sanitary wastewater has negative impact on the marine environment
There is a great disproportion in quality of discharged wastewater directly related to the type of wastewater treatment system installed on cruise ships
The aim of this paper is to present data related to the coastal sea area of the Republic of Croatia and display results of marine pollution for that area
Summary
Previous studies in the world have proven that sanitary wastewater has negative impact on the marine environment. The problem is pronounced on large cruise ships where the number of persons on board reaches 8000. The purpose of this paper is to present the results of the pollution of coastal areas of Republic of Croatia for a period of one year provided with use of above models. Sea in one year period (1.8.2014 – 31.7.2015) in which empirical data on the routes of the ships in the Adriatic and their retention times in MARPOL1 Annex IV areas of limited wastewater discharges were obtained. MARPOL is acronym for International Convention for the Prevention of Pollution from Ships
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