Response of performance of an anammox anaerobic baffled reactor (ABR) to changes in feeding regime

Yu, Jinjin; Chen, Hui; Guo, Qiong; Zhang, Zheng-Zhe; Guo, Liwei; Jin, Ren‐Cun

doi:10.1016/j.ecoleng.2015.06.004

Cited by 14 publications

(5 citation statements)

References 41 publications

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“…As the total nitrogen concentration higher than 200 mg N L -1 was determined as inhibitory for anammox bacteria, the initial total nitrogen (TN) concentration was selected as 200 mg N L -1 in several studies designed to investigate the fate of nitrogen under different operating conditions. 6,7,10,29,30 Similar to these studies, the initial TN concentration was selected as 200 mg N L -1 in this study. According to ammonium/nitrite ratio of 1:1.3, the concentration of ammonium and nitrite were adjusted as 87 mg NH 4 -N L -1 and 114 mg NO 2 -N L -1 in the first period.…”

Section: Operation Of Reactorsmentioning

confidence: 99%

Role of inoculum and feeding strategy in the preference of nitrogen removal pathway in case of the fluctuations in nitrogen loading rate

Cobansoy

Kolukırık

Çığgın

2019

J of Chemical Tech & Biotech

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BACKGROUND: The investigation of the anaerobic ammonium oxidation (anammox) and dissimilatory nitrate reduction to ammonium (DNRA) pathways has improved our insight into nitrogen removal from wastewater. The detection of dominant pathways is beneficial for gaining knowledge on the fate of nitrogen during wastewater treatment. The aim of this study is to explore the nitrogen removal pathways in case of fluctuation in nitrogen loading rate (NLR). For this purpose, the effect of fluctuation in NLR under different feeding strategies (short-term and long-term feeding) on the relative abundance of functional genes related to nitrogen removal pathways were investigated. With the analysis of genes encoding enzymes instead of the 16S rRNA genes, it was aimed to focus on processes rather than the microbial species. RESULTS:The inoculum consisted of aerobic and anaerobic sludge was determined as optimum inoculum for nitrogen removal via anammox when the long-term feeding was applied. The fluctuation in NLR resulted with dominance of different pathways in reactors operated with different feeding strategies. The statistical analyses indicated the importance of DNRA in achieving low nitrogen concentrations. Also, a positive significant correlation between nitrogen removal efficiency with aerobic ammonium oxidation revealed the importance of aerobic ammonium oxidation in nitrogen removal even under anoxic conditions. CONCLUSION: The main conclusions of this study may be summarized as (i) feeding strategy determines dominant nitrogen removal process, (ii) selecting appropriate inoculum is important to shorten the acclimation period, (iii) functional genes are useful as early warning system for track changes in process.

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Section: Operation Of Reactorsmentioning

confidence: 99%

Role of inoculum and feeding strategy in the preference of nitrogen removal pathway in case of the fluctuations in nitrogen loading rate

Cobansoy

Kolukırık

Çığgın

2019

J of Chemical Tech & Biotech

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“…The multi-stage retention capacity of ABR enables it to maintain a high internal retention of biomass. In addition, ABR has excellent solid–liquid separation ability, sludge granulation ability and load shock resistance ability, which is conducive to improve the stability of Anammox process [13] . However, there is no literature involving the long-term enhancing effects and mechanism of low-intensity ultrasound on Anammox process in an ABR.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Anammox performances in an ABR at normal temperature by the low-intensity ultrasonic irradiation

Yuan

Wang

Xing

et al. 2021

Ultrasonics Sonochemistry

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“…The principle of anaerobic baffled reactor (ABR) is to set up a series of vertical baffles in the reactor; thus, the wastewater can be introduced up and down along the baffle in ABR and then pass through the sludge bed of each compartment [13]. The operation flow path of ABR is similar to the plug flow process, which presents the provision of upper and lower baffles to form a compartment [14].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Biohydrogen Production and Performance of Hydrogen-Producing Acetogen by Increasing Normal Molasses Wastewater Proportion in Anaerobic Baffled Reactor

Wang

et al. 2020

Archaea

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The biohydrogen production efficiency and performance of hydrogen-producing acetogen in a four-compartment anaerobic baffled reactor (ABR) were studied by gradually increasing the influent normal molasses wastewater (NMWW) proportion. When the influent NMWW proportion increased to 55%, ABR could develop microbial community with methanogenic function in 63 days and reach a stable operation. When the influent NMWW proportion increased to 80% and reached a stable state, ethanol fermentation was established from butyric acid fermentation in the first three compartments, whereas butyric acid fermentation in the fourth compartment was strengthened. The average biohydrogen production yield and biohydrogen production capacity by COD removal increased to as high as 12.85 L/day and 360.22 L/kg COD when the influent NMWW proportion increased from 55% to 80%, respectively. Although the biogas yield and the specific biogas production rate reached 61.54 L/day and 232 L/kg MLVSS·day, the biohydrogen production yield and specific biohydrogen production rate were only 12.85 L/day and 48 L/kg MLVSS·day, which results in hydrogen consumption by homoacetogenesis and methanogenesis.

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Response of performance of an anammox anaerobic baffled reactor (ABR) to changes in feeding regime

Cited by 14 publications

References 41 publications

Role of inoculum and feeding strategy in the preference of nitrogen removal pathway in case of the fluctuations in nitrogen loading rate

Role of inoculum and feeding strategy in the preference of nitrogen removal pathway in case of the fluctuations in nitrogen loading rate

Enhancement of Anammox performances in an ABR at normal temperature by the low-intensity ultrasonic irradiation

Characteristics of Biohydrogen Production and Performance of Hydrogen-Producing Acetogen by Increasing Normal Molasses Wastewater Proportion in Anaerobic Baffled Reactor

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