Evaluation of Aeration Strategy in Moving Bed Sequencing Batch Reactor Performing Simultaneous 4-Chlorophenol and Nitrogen Removal

2013 ◽  
Vol 170 (4) ◽  
pp. 831-840 ◽  
Author(s):  
Jun-Wei Lim ◽  
Poh-Eng Lim ◽  
Chye-Eng Seng ◽  
Rohana Adnan
Keyword(s):  
Nitrogen Removal ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Moving Bed

Biological phosphorus and nitrogen removal in a sequencing batch moving bed biofilm reactor

2001 ◽  
Vol 43 (1) ◽  
pp. 233-240 ◽  
Author(s):  
H. Helness ◽  
H. Ødegaard
Keyword(s):  
Nitrogen Removal ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Phosphorus Uptake ◽  
Complete Removal ◽  
Biofilm Reactor ◽  
Moving Bed Biofilm Reactor ◽  
Moving Bed ◽  
Activated Sludge Processes ◽  
Biological Phosphorus

Biological phosphorus and nitrogen removal in biofilm processes have a potential advantage compared to activated sludge processes, because of less vulnerability with respect to sludge loss and because biofilm processes, in general, are more compact with a smaller footprint. Experiments have been carried out in a moving bed biofilm reactor operated as a sequencing batch reactor (SBR), with simultaneous nitrification, phosphorus uptake and denitrification in the aerobic phase. In order to achieve good phosphorus and nitrogen removal, the length of the anaerobic period should be tuned to achieve near complete removal of easily biodegradable COD in the anaerobic period, and the length of the aerobic period should be long enough for complete nitrification. The total COD-loading rate must be at the same time be kept high enough to achieve a net growth of biomass in the reactor.

Nitrogen removal in moving bed sequencing batch reactor using polyurethane foam cubes of various sizes as carrier materials

2011 ◽  
Vol 102 (21) ◽  
pp. 9876-9883 ◽  
Author(s):  
Jun-Wei Lim ◽  
Chye-Eng Seng ◽  
Poh-Eng Lim ◽  
Si-Ling Ng ◽  
Amat-Ngilmi Ahmad Sujari
Keyword(s):  
Polyurethane Foam ◽  
Nitrogen Removal ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Moving Bed ◽  
Carrier Materials

Excess nitrogen accumulation in activated sludge in sequencing batch reactor with a single-stage oxic process

2009 ◽  
Vol 59 (3) ◽  
pp. 573-582 ◽  
Author(s):  
Xiao-ming Li ◽  
Dong-bo Wang ◽  
Qi Yang ◽  
Wei Zheng ◽  
Jian-bin Cao ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Nitrogen Removal ◽  
Sequencing Batch Reactor ◽  
Ph Value ◽  
Batch Reactor ◽  
Nitrogen Loss ◽  
Single Stage ◽  
Synthetic Wastewater ◽  
Nitrogen Accumulation ◽  
Excess Nitrogen

It was occasionally found that a significant nitrogen loss in solution under neutral pH value in a sequencing batch reactor with a single-stage oxic process using synthetic wastewater, and then further studies were to verify the phenomenon of nitrogen loss and to investigate the pathway of nitrogen removal. The result showed that good performance of nitrogen removal was obtained in system. 0–7.28 mg L−1 ammonia, 0.08–0.38 mg L−1 nitrite and 0.94–2.12 mg L−1 nitrate were determined in effluent, respectively, when 29.85–35.65 mg L−1 ammonia was feeding as the sole nitrogen source in influent. Furthermore, a substantial nitrogen loss in solution (95% of nitrogen influent) coupled with a little gaseous nitrogen increase in off-gas (7% of nitrogen influent) was determined during a typical aerobic phase. In addition, about 322 mg nitrogen accumulation (84% of nitrogen influent) was detected in activated sludge. Based on nitrogen mass balance calculation, the unaccounted nitrogen fraction and the ratio of nitrogen accumulation in sludge/nitrogen loss in solution were 14.6 mg (3.7% of nitrogen influent) and 0.89, respectively. The facts indicated that the essential pathway of nitrogen loss in solution in this study was excess nitrogen accumulation in activated sludge.

Enhanced aerobic granulation and nitrogen removal by the addition of zeolite powder in a sequencing batch reactor

2012 ◽  
Vol 97 (20) ◽  
pp. 9235-9243 ◽  
Author(s):  
Dong Wei ◽  
Xiaodong Xue ◽  
Shuwei Chen ◽  
Yongfang Zhang ◽  
Liangguo Yan ◽  
...  
Keyword(s):  
Nitrogen Removal ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Aerobic Granulation
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