Nitrogen and Phosphorus Removal by Submerged Membrane Bioreactor

2004 ◽  
Vol 31 (4) ◽  
pp. 349-356
Author(s):  
Li Na ◽  
Li Zhidong ◽  
Li Guode ◽  
Wang Yan ◽  
Wu Shiwei ◽  
...  
Keyword(s):  
Phosphorus Removal ◽  
Membrane Bioreactor ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Submerged Membrane Bioreactor

Two stage intermittent aeration membrane bioreactor for simultaneous organic, nitrogen and phosphorus removal

2000 ◽  
Vol 41 (10-11) ◽  
pp. 217-225 ◽  
Author(s):  
G.T. Seo ◽  
T.S. Lee ◽  
B.H. Moon ◽  
J.H. Lim ◽  
K.S. Lee
Keyword(s):  
Phosphorus Removal ◽  
Membrane Bioreactor ◽  
Removal Rate ◽  
Domestic Wastewater ◽  
Intermittent Aeration ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Aeration Conditions ◽  
Two Phases ◽  
Filtration Experiment

A submerged membrane bioreactor (SMBR) was operated in 2-stage intermittent aeration for simultaneous removal of organic matter, nitrogen and phosphorus. The system consists of two reactors with a total volume of 0.27 m3 (1st reactor 0.09 m3 and 2nd 0.18 m3). Real domestic wastewater was used as influent to the system. Membrane used for this experiment was hollow fiber polyethylene membrane with pore size of 0.1μm and effective surface area, 4 m2. The membrane was submerged in the 2nd reactor for suction type filtration. Experiment was carried out in two phases varying the time cycles of aeration and non-aeration. SRT was maintained at 25 days and HRT, 16–19 hours. MLSS concentration in the reactors was in the range of 2,700–3,400 mg/l. The MLSS internal recycling ratio was maintained at 100% of influent flow rate. When time cycles of aeration and non-aeration were set at 30/90 min and 60/60 min in reactor 1 and 2, the removal of BOD and COD was 98.3% and 95.6%, respectively. A relatively low nitrogen and phosphorus removal was observed in this condition (73.6% as T–N and 46.6% as T–P). However, with 60/60 min intermittent aeration conditions for both reactors, the removal rate of nitrogen and phosphorus for two weeks steady state were enhanced to 91.6% as TN and 66% as TP, respectively. Further a high organic removal (98% BOD and 96.2% COD) was achieved too. In these conditions, the membrane of flux declined from 0.1 m/d to 0.08 m/d and suction filtration was at 10–12 kPa for a month long operation period.

Biological Nutrient Removal and EPS Performance in Aerobic-MBR and SBR-MBR Systems

2013 ◽  
Vol 699 ◽  
pp. 291-297
Author(s):  
Xiao Nan Feng ◽  
Tao Tao ◽  
Hao Xi ◽  
Yong Tao Xu ◽  
Hong Feng Wang ◽  
...  
Keyword(s):  
Membrane Fouling ◽  
Membrane Bioreactor ◽  
Biological Nutrient Removal ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Submerged Membrane Bioreactor ◽  
Conventional Activated Sludge ◽  
Initial Membrane ◽  
Tracer Experiments ◽  
Sludge Activity

.Membrane bioreactor (MBR) is considered to be a promising technology for combine biological with filtration and many advantages over conventional activated sludge (CAS) processes. In this study, the submerged membrane bioreactor which was explored by our research group and JDL Environmental Protection Ltd. at condition of aerobic-MBR and SBR-MBR were investigated. Hydraulic characteristics of MBR by the tracer experiments showed the total dead space (Vd, %) in the MBR was 3.2%. Compared with aerobic-MBR situation, the SBR-MBR exhibited better performance of average NH4+-N, total nitrogen, and phosphorus removal efficiency 90%, 86%, 57% respectively. The content of protein was correlated to sludge activity and organic matter. The initial membrane fouling was caused by layer pollution and subsequently the extra-cellular polymeric substances (EPS) contributed.

Effect of solids retention time on nitrogen and phosphorus removal from municipal wastewater in a sequencing batch membrane bioreactor

2016 ◽  
Vol 38 (7) ◽  
pp. 806-815 ◽  
Author(s):  
Tiago José Belli ◽  
Jossy Karla Brasil Bernardelli ◽  
Rayra Emanuelly da Costa ◽  
João Paulo Bassin ◽  
Miriam Cristina Santos Amaral ◽  
...  
Keyword(s):  
Retention Time ◽  
Phosphorus Removal ◽  
Membrane Bioreactor ◽  
Municipal Wastewater ◽  
Nitrogen And Phosphorus ◽  
Nitrogen And Phosphorus Removal ◽  
Solids Retention Time ◽  
Solids Retention
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