title: Application of a combined process of moving-bed biofilm reactor (MBBR) and chemical coagulation for dyeing wastewater treatment.
abstract: A combined process consisted of a Moving-Bed Biofilm Reactor (MBBR) and chemical coagulation was investigated for textile wastewater treatment. The pilot scale MBBR system is composed of three MBBRs (anaerobic, aerobic-1 and aerobic-2 in series), each reactor was filled with 20% (v/v) of polyurethane-activated carbon (PU-AC) carrier for biological treatment followed by chemical coagulation with FeCl2. ln the MBBR process, 85% of COD and 70% of color (influent COD = 807.5 mg/L and color = 3,400 PtCo unit) were removed using relatively low MLSS concentration and short hydraulic retention time (HRT = 44 hr). The biologically treated dyeing wastewater was subjected to chemical coagulation. After coagulation with FeCl2, 95% of COD and 97% of color were removed overall. The combined process of MBBR and chemical coagulation has promising potential for dyeing wastewater treatment.
authors.affiliation: Department of Environmental Engineering, Kyungpook National University, Taegu, South Korea.
authors.forename: D H
authors.initials: DH
authors.lastname: Shin
authors.forename: W S
authors.initials: WS
authors.lastname: Shin
authors.forename: Y H
authors.initials: YH
authors.lastname: Kim
authors.forename: Myung Ho
authors.initials: MH
authors.lastname: Han
authors.forename: S J
authors.initials: SJ
authors.lastname: Choi
mesh_terms: D018441:Biofilms; D019149:Bioreactors; D002244:Carbon / Q000378:metabolism; D004396:Coloring Agents / Q000378:metabolism*; D010100:Oxygen / Q000378:metabolism; D013783:Textile Industry; D013997:Time Factors; D014865:Waste Disposal, Fluid / Q000379:methods*; D018508:Water Purification / Q000379:methods*
chemical_list: D004396:Coloring Agents; D002244:Carbon; D010100:Oxygen