Application of Fungal Moving-Bed Biofilm Reactors (MBBRs) and Chemical Coagulation for Dyeing Wastewater Treatment

作者：Park Hye Ok; Oh Sanghwa; Bade Rabindra; Shin Won Sik^*

来源：KSCE Journal of Civil Engineering, 2011, 15(3): 453-461.

DOI：10.1007/s12205-011-0997-z

• white-rot fungi
• decolorization
• dyeing wastewater
• Extracellular Polymeric Substances (EPS)
• moving-bed biofilm reactor

A combined process consisting of Moving-Bed Biofilm Reactors (MBBRs) with Polyurethane-Dyeing Sludge Carbonaceous Material (PU-DSCM) foam and chemical coagulation was investigated for dyeing wastewater treatment. The pilot-scale MBBR system was composed of two aerobic MBBRs in series. Each reactor was filled with 20% (v/v) of Polyurethane-Dye Sludge Carbonaceous Material foam (PU-DSCM foam) inoculated with a white-rot fungus, Phanerochaete chrysosporium, for biological treatment followed by chemical coagulation with FeCl(2) or alum. In the MBBR process, 79% of COD and 54% of color (influent COD = 539 mg/L and color = 622 PtCo units) were removed at MLSS concentration of 2900 mg/L attached to the PU-DSCM carrier and 48 hr of short Hydraulic Retention Time (HRT) at steady state. The biologically treated dyeing wastewater was subjected to chemical coagulation. After coagulation with alum at the optimum dosage (1.55 mg alum/mg COD), 95.7% of COD and 73.4% of color were removed in overall. The combined process of fungal MBBRs and chemical coagulation has promising potential for dyeing wastewater treatment.

• 出版日期2011-3