Application of a combined process of moving-bed biofilm reactor (MBBR) and chemical coagulation for dyeing wastewater treatment.
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.
Shin
D H
DH
Department of Environmental Engineering, Kyungpook National University, Taegu, South Korea.
Shin
W S
WS
Kim
Y H
YH
Han
Myung Ho
MH
Choi
S J
SJ
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*
D004396:Coloring Agents; D002244:Carbon; D010100:Oxygen