Evaluation of a novel integrated bioreactor--AOS system for treating oil-containing restaurant wastewater on site in Hong Kong.
AOS system is an anaerobic digestion reactor (A-section, UASB or UBF), oxidation degradation reactor (O-section, aerobic biofilm reactor), and physical sedimentation tank (S-section) 3-in-1 integrated reactor. The compact bioreactor was applied to treat oil-containing restaurant's wastewater on site in Hong Kong. The treatment efficiency was observed at different HRT. Experimental results indicated that the AOS system for treating oil-containing restaurant wastewater on site was feasible when HRT at 0.6 days above. During the running period, the net sludge generation rate of the AOS system was only about 0.08-0.09 g g(-1)removed COD, and the utmost COD specific volumetric removal rate (SVRR) of the system reached 2.77 gL(-1) d(-1). The utmost specific biomass substrate utilization rate (SBSUR) of COD in O-section and A-section reached 1.22 d(-1) and 0.128 d(-1), respectively. In addition, the experiment results showed that the AOS system with a filter in UASB (that is UBF's AOS system) could bear much more great HLR comparing with UASB's AOS and was more efficient for treating oil-containing restaurant's wastewater on site.
Wang
L
L
School of Environmental Science and Engineering, Tongji University, Shanghai, China. celwang@yahoo.com
Zhou
Q
Q
Chua
H
H
D001673:Biodegradation, Environmental; D018533:Biomass; D019149:Bioreactors; D005069:Evaluation Studies as Topic; D005374:Filtration; D005740:Gases / Q000032:analysis; D006723:Hong Kong; D009821:Oils / Q000032:analysis*; D010100:Oxygen / Q000032:analysis; D012147:Restaurants; D012722:Sewage / Q000032:analysis*; D013997:Time Factors; D014865:Waste Disposal, Fluid / Q000295:instrumentation / Q000379:methods*
D005740:Gases; D009821:Oils; D012722:Sewage; D010100:Oxygen