Application of A2O moving-bed biofilm reactors for textile dyeing wastewater treatment

• Published in: The Korean journal of chemical engineering Vol. 27; no. 3; pp. 893 - 899
• Main Authors: Park, Hye Ok, Oh, Sanghwa, Bade, Rabindra, Shin, Won Sik
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01.05.2010; 한국화학공학회
• Subjects: Biotechnology; Catalysis; Chemistry; Chemistry and Materials Science; Industrial Chemistry/Chemical Engineering; Materials Science; Rapid Communication; 화학공학; Moving-bed Biofilm Reactor (MBBR); Extracellular Polymeric Substances (EPS); Decolorization; Carrier; Dyeing Wastewater
• ISSN: 0256-1115; 1975-7220
• DOI: 10.1007/s11814-010-0143-5

A three-stage pilot-scale moving-bed biofilm reactor (MBBRs, anaerobic-anaerobic-aerobic in series) was investigated to treat textile dyeing wastewater. Each reactor was filled with 20% (v/v) of polyurethane-activated carbon (PU-AC) carrier for biological treatment. To determine the optimum operating conditions of MBBRs, the effect of PUAC carrier, its packing percentage (v/v%) and pH control on COD removal were analyzed by batch experiments. The MBBRs were inoculated with activated sludge obtained from a local dyeing wastewater treatment plant. The MBBR process removed 86% of COD and 50% of color (influent COD=608 mg/L and color=553 PtCo unit) using relatively low MLSS concentration (average 3,000 mg/L in biomass attached to PU-AC carrier) and hydraulic retention time (HRT=44 hr). The MBBR process showed a promising potential for dyeing wastewater treatment.