Study on Treatment of Domestic Wastewater by Submerged Flat MBR
The treatment of dormitory and refectory mixed wastewater by a submerged flat membrane bioreactor (MBR) was studied. The A/O MBR system treated wastewater 4m3/d. The mean removal efficiency of BOD5 and CODCr was more than 95％ with the influent concentration of 100 ~ 500mg/L BOD5 and 120 ~ 900 mg/L CODCr. It was proved that active carbon treatment reduced effluent chroma effectively. At the steady working period (MLSS 8,000 ~ 15,000mg/L), TN and NH3-N removal efficiencies were more than 85％, and that of TP was between 50％ and 95％. Besides, this paper studied the membrane fouling mechanism and revealed that membrane fouling was affected by MLSS, particle size distribution of sludge and composition of raw water. We found that the diameter of sludge particles changes with the MLSS. We also found the small particles caused membrane fouling. The results proved that submerged flat MBR was suitable to treat small-or-medium-size domestic and industrial wastewater and would have a promising future.
Submerged flat membrane MBR MLSS Effluent Chroma Membrane fouling
T.Zhu Yuanhua XIE Yunde WANG Y.X.WANG Hongjun ZHANG
Northeastern University, China
国际会议
2nd IEEE Conference on Industrial Electronics and Applications(ICIEA 2007)(第二届IEEE工业电子与应用国际会议)
哈尔滨
英文
2007-05-23（万方平台首次上网日期，不代表论文的发表时间）