Low energy single-staged anaerobic fluidized bed ceramic membrane bioreactor (AFCMBR) for wastewater treatment.
An aluminum dioxide (Al2O3) ceramic membrane was used in a single-stage anaerobic fluidized bed ceramic membrane bioreactor (AFCMBR) for low-strength wastewater treatment. The AFCMBR was operated continuously for 395days at 25°C using a synthetic wastewater having a chemical oxygen demand (COD) averaging 260mg/L. A membrane net flux as high as 14.5-17L/m2h was achieved with only periodic maintenance cleaning, obtained by adding 25mg/L of sodium hypochlorite solution. No adverse effect of the maintenance cleaning on organic removal was observed. An average SCOD in the membrane permeate of 23mg/L was achieved with a 1h hydraulic retention time (HRT). Biosolids production averaged 0.014±0.007gVSS/gCOD removed. The estimated electrical energy required to operate the AFCMBR system was 0.039kWh/m3,which is only about 17% of the electrical energy that could be generated with the methane produced.
Department of Environmental Engineering, Inha University, Namgu, Inha-ro100, Incheon, Republic of Korea.
Muhammad
M
Aslam
Department of Environmental Engineering, Inha University, Namgu, Inha-ro100, Incheon, Republic of Korea; Department of Civil and Environmental Engineering, Stanford University, CA 94305, USA.
Perry L
PL
McCarty
Department of Environmental Engineering, Inha University, Namgu, Inha-ro100, Incheon, Republic of Korea.
Chungheon
C
Shin
Department of Environmental Engineering, Inha University, Namgu, Inha-ro100, Incheon, Republic of Korea.
Jaeho
J
Bae
Department of Environmental Engineering, Inha University, Namgu, Inha-ro100, Incheon, Republic of Korea. Electronic address: jeonghwankim@inha.ac.kr.
Jeonghwan
J
Kim
D000693:Anaerobiosis; D019149:Bioreactors; D002516:Ceramics; D008567:Membranes, Artificial; D014865:Waste Disposal, Fluid; D062065:Wastewater; D018508:Water Purification
D008567:Membranes, Artificial; D062065:Wastewater
Anaerobic fluidized-bed membrane bioreactor; Ceramic membrane; Energy; GAC scouring; Membrane fouling