Application of sequencing batch biofilm reactor (SBBR) in dairy wastewater treatment
Application of sequencing batch biofilm reactor (SBBR) in dairy wastewater treatment / Arzu Ozturk, Ahmet Aygun, Bilgehan Nas
p. 248-254 ; 29 cm
수록자료: Korean journal of chemical engineering. Korean Institute of Chemical Engineers. Vol.36 No.2(2019 February), p. 248-254 36:2<248 ISSN 0256-1115↔ 저자: Arzu Ozturk, Aksaray Technical Sciences Vocational School, Chemical Technology 저자: Ahmet Aygun, Bursa Technical University, Department of Environmental Engineering 저자: Bilgehan Nas, Konya Technical University, Department of Environmental Engineering
Application of lab-scale sequencing batch (SBR) and sequencing batch biofilm reactors (SBBR) for treatment of dairy wastewater was investigated under organic loading of 1,130-1,560 gBOD₅/m³·d. The main characteristics of the dairy wastewater were: pH=4.9, chemical oxygen demand (COD)=16,264 mg/l; biological oxygen demand (BOD₅)=10,536 mg/l, PO₄-P=342 mg/l; total nitrogen (TN)=224 mg/l. SBBR was filled with the Kaldnes K1 biocarrier at 30% of the volume of empty reactor. The SBR and SBBR were operated in fixed 24 h cycles, each consisting of 30 min fill up, 22 h aeration, 1.5 h settle, 30 min decant, and idle with a hydraulic retention time (HRT) of 8 days. Operational parameters such as pH, dissolved oxygen (DO), mixed liquor suspended solid (MLSS), solids retention time (SRT) and sludge volume index (SVI) were monitored during the whole cycle. The effects of these parameters on the COD, nitrogen and phosphorus removal were discussed in this paper. As a result, adding biocarrier to the reactor had a positive effect on organic with COD removal of 63.5% for SBR and 81.8% for SBBR and nutrient removal with ammonium removal of 66.0% for SBR and 85.1% for SBBR in treatment of dairy wastewater.