Performance assessment of AS-SBR and UF-MBR for hotel wastewater treatment.
A large number of tourist structures in Venice (Italy) have small sized on-site treatment systems for their wastewater. Due to its historical characteristics, the city has no public sewerage system and untreated hotel wastewater represents a serious hazard for its lagoon environment. This study focused on the wastewater facilities installed in two hotels adopting an Activated Sludge Sequencing Batch Reactor (AS-SBR) and an Ultra-Filtration Membrane Biological Reactor (UF-MBR). Their performance was checked in terms of both traditional physico-chemical and ecotoxicological parameters, the importance of which has recently been recognised by EU regulatory dispositions and OSPAR indications. Acute and sub-chronic endpoints were both considered on a whole effluent toxicity basis by means of Vibrio fischeri and Crassostrea gigas, respectively. The two months monitoring survey evidenced that the UF-MBR was more efficient than the AS-SBR in providing high-quality discharges under both chemical and ecotoxicological viewpoints.
Libralato
G
G
Department of Environmental Sciences, University of Venice Cà Foscari, Campo della Celestia 2737/b, I-30122 Venice, Italy. giovanni.libralato@unive.it
Volpi Ghirardini
A
A
Avezzù
F
F
D004784:Environmental Monitoring / Q000379:methods*; D007220:Industrial Waste; D007558:Italy; D014865:Waste Disposal, Fluid / Q000592:standards*; D014867:Water / Q000737:chemistry*; D014871:Water Microbiology / Q000592:standards; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D014877:Water Pollution, Chemical / Q000517:prevention & control; D018508:Water Purification / Q000379:methods
D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D014867:Water