Modeling simultaneous nitrification and denitrification (SND) in a fluidized bed biofilm reactor

Seifi, Mohammad; Fazaelipoor, Mohammad Hassan

doi:10.1016/j.apm.2012.01.004

Cited by 107 publications

(37 citation statements)

References 18 publications

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“…This was in accordance with the highest TN removal efficiency of the pure MBBR-MBR with a value of 71.81 ± 16.04 %, as indicated in Table 1. Seifi and Fazaelipoor (2012) and Henze et al (1987) obtained similar values to those obtained in this study regarding the maximum specific growth rate for autotrophic biomass (μ m, A ) and half-saturation coefficient for ammonia nitrogen (K NH ), respectively, in an MBBR.…”

Section: Heterotrophic and Autotrophic Kinetic Performancesupporting

confidence: 92%

“…Plattes et al (2007) obtained similar values of the yield coefficient for heterotrophic biomass (Y H ) in an MBBR. In this regard, Canziani et al (2006) and Seifi and Fazaelipoor (2012) reported similar values to those obtained in this research regarding the maximum specific growth rate for heterotrophic biomass (μ m, H ) and half-saturation coefficient for organic matter (K M ), respectively, in an MBBR.…”

Section: Heterotrophic and Autotrophic Kinetic Performancesupporting

confidence: 91%

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Two-step nitrification in a pure moving bed biofilm reactor-membrane bioreactor for wastewater treatment: nitrifying and denitrifying microbial populations and kinetic modeling

Leyva‐Díaz

González‐Martínez

Muñío

et al. 2015

Appl Microbiol Biotechnol

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The moving bed biofilm reactor-membrane bioreactor (MBBR-MBR) is a novel solution to conventional activated sludge processes and membrane bioreactors. In this study, a pure MBBR-MBR was studied. The pure MBBR-MBR mainly had attached biomass. The bioreactor operated with a hydraulic retention time (HRT) of 9.5 h. The kinetic parameters for heterotrophic and autotrophic biomasses, mainly nitrite-oxidizing bacteria (NOB), were evaluated. The analysis of the bacterial community structure of the ammonium-oxidizing bacteria (AOB), NOB, and denitrifying bacteria (DeNB) from the pure MBBR-MBR was carried out by means of pyrosequencing to detect and quantify the contribution of the nitrifying and denitrifying bacteria in the total bacterial community. The relative abundance of AOB, NOB, and DeNB were 5, 1, and 3%, respectively, in the mixed liquor suspended solids (MLSS), and these percentages were 18, 5, and 2%, respectively, in the biofilm density (BD) attached to carriers. The pure MBBR-MBR had a high efficiency of total nitrogen (TN) removal of 71.81±16.04%, which could reside in the different bacterial assemblages in the fixed biofilm on the carriers. In this regard, the kinetic parameters for autotrophic biomass had values of YA=2.3465 mg O2 mg N(-1), μm, A=0.7169 h(-1), and KNH=2.0748 mg NL(-1).

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Section: Heterotrophic and Autotrophic Kinetic Performancesupporting

confidence: 92%

Section: Heterotrophic and Autotrophic Kinetic Performancesupporting

confidence: 91%

Two-step nitrification in a pure moving bed biofilm reactor-membrane bioreactor for wastewater treatment: nitrifying and denitrifying microbial populations and kinetic modeling

Leyva‐Díaz

González‐Martínez

Muñío

et al. 2015

Appl Microbiol Biotechnol

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“…Bu çalışmada kullanılan sentetik atıksuda, gerçek evsel atıksu kompozisyonuna benzetmek amacıyla glikoz, sodyum asetat, NH 4 Bu çalışmada her iki reaktörde elde edilen birlikte nitrifikasyon denitrifikasyon verimleri ile daha önceden rapor edilen birlikte nitrifikasyon denitrifikasyon verimleri ise Tablo 1'de verilmiştir. Daha önceki raporlar, etkili bir birlikte nitrifikasyon denitrifikasyon veriminin nitrifikasyon denitrifikasyon hızlarının sistemde çok düşük miktarlarda nitrit ve nitrat üreten bir dengeye sahip olmasıyla meydana geleceğini belirtmişlerdir [18,19,20].…”

Section: Sentetik Atıksu Ve çAmurunclassified

“…Öncelikle, birlikte nitrifikasyon denitrifikasyon prosesi seri biçimde iki ayrı tankın işletimi gereksinimini ortadan kaldırmaktadır [3]. Bunun yanında, birlikte nitrifikasyon denitrifikasyon prosesinde % 22-40 daha az karbon kullanıldığı ve klasik nitrifikasyon denitrifikasyon prosesiyle karşılaştırıldığında % 30 kadar daha düşük çamur oluştuğu hesap edilmiştir [4]. Birlikte nitrifikasyon denitrifikasyon, nitrifikasyon sırasında tüketilen alkalinite denitrifikasyon sırasında üretileceğinden nötral pH değerlerinde tamamlanabilir [5].…”

Section: Introductionunclassified

Ardışık Kesikli Reaktör ve Ardışık Kesikli Biyofilm Reaktörde Birlikte Nitrifikasyon Denitrifikasyona C/N Oranının Etkisinin Karşılaştırılması

Gürtekin¹

2014

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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ÖzetBu çalışmada, ardışık kesikli reaktör (AKR) ve ardışık kesikli biyofilm reaktörün (AKBR) birlikte nitrifikasyon denitrifikasyon (BND) performansına farklı C/N oranlarının (5, 10 ve 15) etkisi karşılaştırılmıştır. Her iki reaktörde % 90'nın üzerinde KOİ giderme verimleri elde edilmiş olup, KOİ giderimi farklı C/N oranlarından etkilenmemiştir. Farklı C/N oranlarının reaktörlerin NH 4 + -N giderme verimine etkisi az olmasına karşın TN giderme verimine etkisinin daha büyük olduğu belirlenmiştir. Her iki reaktörde C/N oranı arttıkça TN giderme verimi ve birlikte nitrifikasyon denitrifikasyon verimi artmıştır. AKBR'de birlikte nitrifikasyon denitrifikasyon verimi AKR'den daha yüksek bulunmuştur. Sonuçlar, her iki reaktörde farklı C/N oranlarının etkisinin aynı olduğunu ve AKBR'de daha yüksek azot giderimi ile daha etkili birlikte nitrifikasyon denitrifikasyonun elde edildiğini göstermiştir.Anahtar Kelimeler: Birlikte nitrifikasyon denitrifikasyon, Ardışık kesikli reaktör, Ardışık kesikli biyofilm reaktör, C/N oranı. Comparison of the Effect of C/N Ratio on Simultaneous Nitrification and Denitrification in Sequencing Batch Reactor and Sequencing Batch Biofilm Reactor AbstractIn this study, the effect of different carbon to nitrogen (C/N) ratios (5, 10 and 15) on simultaneous nitrification and denitrification (SND) in sequencing batch reactor (SBR) and sequencing batch biofilm reactor (SBBR) was compared. The COD removal efficiencies in both reactor were above 90 % suggesting that it was irrespective of C/N ratios. The C/N ratios has little effect on NH 4 + -N removal, while they had greater effect on the removal of TN. The TN removal efficiency and simultaneous nitrification denitrification efficiency in both reactors increased with increases in C/N ratios. The simultaneous nitrification denitrification efficiency in SBBR is higher than SBR. The results showed that the effect of different carbon to nitrogen (C/N) ratios in both reactors was similar and SBBR had higher nitrogen removal and simultaneous nitrification denitrification.

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“…The submerged biofilm bioreactor configuration has been extensively used for treatment of carbonaceous pollutants as well as nitrogen and phosphorus matters [3]. High sludge retention time in biofilm bioreactor can cause coexistence of nitrifier and obligate heterotrophic aerobes in the outer layers of biofilm [4]. Denitrifiers can exist in the inner layers of biofilm where the concentration of oxygen is low [5].…”

Section: Introductionmentioning

confidence: 99%

Comparing new perspective of hybrid approach and conventional kinetic modelling techniques of a submerged biofilm reactor performance

Kordkandi

Berardi

2015

Biochemical Engineering Journal

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Modeling simultaneous nitrification and denitrification (SND) in a fluidized bed biofilm reactor

Cited by 107 publications

References 18 publications

Two-step nitrification in a pure moving bed biofilm reactor-membrane bioreactor for wastewater treatment: nitrifying and denitrifying microbial populations and kinetic modeling

Two-step nitrification in a pure moving bed biofilm reactor-membrane bioreactor for wastewater treatment: nitrifying and denitrifying microbial populations and kinetic modeling

Ardışık Kesikli Reaktör ve Ardışık Kesikli Biyofilm Reaktörde Birlikte Nitrifikasyon Denitrifikasyona C/N Oranının Etkisinin Karşılaştırılması

Comparing new perspective of hybrid approach and conventional kinetic modelling techniques of a submerged biofilm reactor performance

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