Biological nitrogen removal with real-time control using step-feed SBR technology

The performance of a real-time controlled Sequencing Batch Membrane Bioreactor (SBMBR) for removing organic matter and nitrogen from synthetic wastewater has been investigated in this study under two specific ammonia loadings of 0.0086 and 0.0045g NH4+-N gVSS−1 day−1. Laboratory results indicate that both COD and DOC removal are greater than 97.5% (w/w) but the major benefit of using membrane for solid-liquid separation is that the effluent can be decanted through the membrane while aeration is continued during the draw stage. With a continued aeration, the sludge cake layer is prevented from forming thus alleviating the membrane clogging problem in addition to significant nitrification activities observed in the draw stage. With adequate aeration in the oxic stage, the nitrogen removal efficiency exceeding 99% can be achieved with the SBMBR system. Furthermore, the SBMBR system has also been used to study the occurrence of ammonia valley and nitrate knee that can be used for real-time control of the biological process. Under appropriate ammonia loading rates, applicable ammonia valley and nitrate knee are detected. The real-time control of the SBMBR can be performed based on on-line ORP and pH measurements.

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Development and Implementation of a Real-Time Control System for Nitrogen Removal Using OUR and ORP as End Points

Industrial & Engineering Chemistry Research ◽

10.1021/ie0488851 ◽

2005 ◽

Vol 44 (9) ◽

pp. 3367-3373 ◽

Cited By ~ 41

Author(s):

Sebastià Puig ◽

Lluís Corominas ◽

M. Teresa Vives ◽

M. Dolors Balaguer ◽

Jesús Colprim ◽

...

Keyword(s):

Control System ◽

Real Time ◽

Nitrogen Removal ◽

Real Time Control ◽

End Points ◽

Time Control

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Enhanced nitrogen removal from nitrate-rich mature leachate via partial denitrification (PD)-anammox under real-time control

Bioresource Technology ◽

10.1016/j.biortech.2019.121615 ◽

2019 ◽

Vol 289 ◽

pp. 121615 ◽

Cited By ~ 12

Author(s):

Zhong Wang ◽

Liang Zhang ◽

Fangzhai Zhang ◽

Hao Jiang ◽

Shang Ren ◽

...

Keyword(s):

Real Time ◽

Nitrogen Removal ◽

Real Time Control ◽

Time Control

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Real-time control strategy for nitrogen removal via nitrite in a SHARON reactor using pH and ORP sensors

Process Biochemistry ◽

10.1016/j.procbio.2012.05.020 ◽

2012 ◽

Vol 47 (10) ◽

pp. 1510-1515 ◽

Cited By ~ 17

Author(s):

J. Claros ◽

J. Serralta ◽

A. Seco ◽

J. Ferrer ◽

D. Aguado

Keyword(s):

Real Time ◽

Nitrogen Removal ◽

Control Strategy ◽

Real Time Control ◽

Time Control

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Nitrogen Removal via Nitrite from Municipal Wastewater at Low Temperatures using Real-Time Control to Optimize Nitrifying Communities

Environmental Science & Technology ◽

10.1021/es070850f ◽

2007 ◽

Vol 41 (23) ◽

pp. 8159-8164 ◽

Cited By ~ 195

Author(s):

Qing Yang ◽

Yongzhen Peng ◽

Xiuhong Liu ◽

Wei Zeng ◽

Takashi Mino ◽

...

Keyword(s):

Real Time ◽

Nitrogen Removal ◽

Low Temperatures ◽

Municipal Wastewater ◽

Real Time Control ◽

Time Control

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REAL-TIME CONTROL OF NITROGEN REMOVAL AT FULL-SCALE USING OXIDATION REDUCTION POTENTIAL

Water Science & Technology ◽

10.2166/wst.1994.0192 ◽

1994 ◽

Vol 30 (4) ◽

pp. 207-210 ◽

Cited By ~ 11

Author(s):

K. Wouters-Wasiak ◽

A. Héduit ◽

J. M. Audic ◽

F. Lefèvre

Keyword(s):

Real Time ◽

Nitrogen Removal ◽

Reduction Potential ◽

Treatment Plant ◽

Full Scale ◽

Real Time Control ◽

Time Control ◽

Oxidation Reduction ◽

Oxidation Reduction Potential ◽

Aeration Conditions

Full-scale studies at a 16,000 p.e. wastewater treatment plant were carried out to examine the use of oxidation-reduction potential (ORP) (and dissolved oxygen (DO) concentrations for real-time monitoring of biological nutrient control. Breakpoints in DO and ORP time profiles proved particularly useful (with correct aeration conditions) in optimising nitrogen removal.

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