EVALUATION OF THE SYNERGISTIC EFFECT IN WASTEWATER TREATMENT FROM SHIPS BY THE ADVANCED COMBINATION SYSTEM
Journal: Water Conservation and Management (WCM)
Author: Xuan Phuong Nguyen, Dinh Tuyen Nguyen, Van Viet Pham, Viet Duc Bui
Print ISSN : 2523-5664
Online ISSN : 2523-5672
This is an open access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
The shipping industry accounts for 90% of global trade. The remarkable growth of the shipping sector over the past decade has created many environmental challenges. The discharge of wastewater from ships (containing black and gray water) has become a serious threat to the marine environment. Developing a real wastewater treatment system not only meets the requirement of small space onboard but also meets the latest standards of the International Maritime Organization (IMO) remains a challenging task for the shipping industry. To remove oil, anionic surfactants, and organic substances in domestic wastewater, ship bilge water, treatment methods combining advanced oxidation and adsorption processes were applied in this study. In this paper, a combined system including ozonation and photocatalysis combined with adsorption on activated carbon to ensure the simultaneous removal and decomposition of organic contaminants in polluted wastewater from ships. The influence of system operating parameters on the efficiency of pollutant removal in wastewater from ships was studied and optimal operating conditions were determined. The results show that the combination of treatment technologies has improved the reaction rate by 25% in the thermodynamic and kinetic models of pollutant removal, moreover, pollutant removal efficiency has been improved by nearly 20% compared with single technologies.