Comparison of different cultures and culturing conditions for the biological deterioration of organic load from real saline bilge wastewater: microbial diversity insights and ecotoxicity assessment

Bilge wastewater is a high strength, typically saline wastewater, originating from operation of ships. In this study, the treatment real bilge was tested using pure isolated aerobic strains and mixed cultures (aerobic anaerobic). The Chemical Oxygen Demand (COD) ecotoxicity decrease were monitored over time, while microbial dynamics alterations in also recorded. Pseudodonghicola xiamenensis, Halomonas alkaliphila Vibrio antiquaries shown to significantly biodegrade wastewater. Reasonable COD removal rates achieved by (59%, 9 days), anaerobic showed lower performance (34%, 51 days). genus identified as dominant under conditions both control sample (raw wastewater), after exposure demonstrating natural proliferation potential contribution reduction. Biodegradation higher when initial organic load high, toxicity raw partially decreased treatment.