The efficiency of a sequencing batch biofilm reactor in organic carbon and phosphorus removal.
A laboratory sequencing batch biofilm reactor (SBBR), operated for a period of 158 days, was used to treat domestic-strength synthetic effluent. The biofilm reactor comprised a bulk fluid reactor, a biofilm plastic module, a synthetic wastewater feed tank, and pneumatic devices with pneumatic controls. The reactor cycle time was 8 h, and its operation consisted of five phases: feeding (59 min), mixing (1 min), anoxic/anaerobic (3 h), aerobic (3 h), and settling (1 h). At total chemical oxygen demand (CODT) loading rates of 8.8 g CODT m(-2) d(-1) and 1.2 kg CODT m(-3) d(-1), expressed in terms of the plastic module surface area and reactor volume, respectively, the SBBR had average removal rates of 8.3 g CODT m(-2) d(-1) and 1.1 kg CODT m(-3) d(-1), or 94%. Total orthophosphorus (PO4-PT) and filtered orthophosphorus (PO4-PF) removals were 44% and 50%, respectively.
Department of Civil Engineering, National University of Ireland, Galway, Ireland.
J
J
Prendergast
M
M
Rodgers
M G
MG
Healy
D018441:Biofilms; D019149:Bioreactors; D002244:Carbon / Q000302:isolation & purification* / Q000378:metabolism*; D010084:Oxidation-Reduction; D010758:Phosphorus / Q000302:isolation & purification* / Q000378:metabolism*; D014865:Waste Disposal, Fluid / Q000379:methods*
D010758:Phosphorus; D002244:Carbon