Treatment of hypersaline industrial wastewater by a microbial consortium in a sequencing batch reactor.
Hypersaline effluents are produced by various industrial activities. Such wastewater, rich in both organic matter and salt (> 35 g l(-1)), is difficult to treat by conventional wastewater treatment processes. It is necessary to use halophilic bacteria. In this study, a bench-scale sequencing batch reactor (SBR) was inoculated with halophilic sediments in order to treat an agri-food effluent containing 120 g salt l(-1). The micro-organisms were able to treat carbon and nitrogen, provided the pH in the reactor was neutralised with phosphoric acid. Soluble COD and Soluble TKN removal attained 83% and 72% respectively. 16S rDNA identification of the halophilic microbial community showed high diversity.
Lefebvre
O
O
Laboratoire de Biotechnologie de l'Environnement, Institut National de la Recherche Agronomique, Avenue des Etangs, 11100 Narbonne, France.
Habouzit
F
F
Bru
V
V
Delgenes
J P
JP
Godon
J J
JJ
Moletta
R
R
D000383:Agriculture; D019149:Bioreactors; D004269:DNA, Bacterial / Q000032:analysis; D019649:Food Industry; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste; D010100:Oxygen; D012965:Sodium Chloride; D014865:Waste Disposal, Fluid / Q000379:methods*; D014871:Water Microbiology
D004269:DNA, Bacterial; D007220:Industrial Waste; D012965:Sodium Chloride; D010100:Oxygen