Abstract:In order to study the effect of addition GAC on operation parameters and treatment efficiencies in the MBR, the denitrification performance, the permeable membrane pressure and the membrane flux of membrane bioreactor (MBR) and granules activated carbon-membrane bioreactor (GAC-MBR) were investigated. The two bioreactors were simulated by the activated sludge model No.1 (ASM1). The operation period of MBR and GAC-MBR were 75, 150h, respectively. The fouling rate of MBR was slowed, the opearation period was prolonged by addition GAC. The effluent ammonia nitrogen concentration of MBR and GAC-MBR was 0.5, 6mg/L, respectively. The effluent COD concentrations of them were less than 20mg/L. The effluent nitrate concentration of MBR and GAC-MBR was 4.5, 2mg/L. The effluent total nitrogen concentrations of MBR and GAC-MBR was 5, 10mg/L. The outflow water quality was better than the first grade A required by the discharge standard of pollutants for municipal wastewater treatment plant. Using the activated sludge model No.1 (ASM1) to simulate two bioreactors, the simulated value of water quality was similar to the experimental value; the most of microorganisms were ammonia oxidizing bacterias and heterotrophices. The mass faction of heterotrophices was 95.5%, 97.7% in the MBR, GAC-MBR, respectively. The mass faction of ammonia oxidizing bacterias was 4.4% in the MBR and 2.3% in the GAC-MBR, respectively. Addition GAC could relieve the membrane fouling and have a good removal efficiency of the pollutants.
洪俊明, 尹娟. 颗粒活性炭对膜生物反应器脱氮性能的影响[J]. 中国环境科学, 2012, 32(1): 75-80.
HONG Jun-Ming, YIN Juan. Effect of dosing GAC on the denitrification performance of membrane bioreactor.. CHINA ENVIRONMENTAL SCIENCECE, 2012, 32(1): 75-80.