TREATMENT OF ORGANIC WASTE-WATER BY ANAEROBIC BIOLOGICAL FLUIDIZED-BED REACTOR

Anaerobic biological fluidized bed method (AFBBR) for wastewater is already known to have higher specific surface area and biomass concentration than the conventional complete-mixing anaerobic reactor, so the removal efficiency for organic wastewater treatment is higher. Experiments were carried out with three kinds of wastewater namely synthetic domestic and MSG wastewater. The results show that the AFBBR can exploit its advantages to compensate for the decrease in the digestive rate caused by temperature drop, while still showing the high treatability of organic wastewater. Treating wastewater containing chlorophenol and nitrophenol at below 0.9 kg compound/m(3).d, the COD removal efficiency can reach greater than or equal to 90%.