Comparison of sulfate-reducing and conventional Anammox upflow anaerobic sludge blanket reactors

Rikmann, Ergo; Zekker, Ivar; Tomingas, Martin; Vabamäe, Priit; Kroon, Kristel; Saluste, Alar; Menert, Anne; Loorits, Liis; Rubin, Sergio; Tenno, Toomas

doi:10.1016/j.jbiosc.2014.03.012

Cited by 72 publications

(15 citation statements)

References 34 publications

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“…For simplification, one population group is applied to represent SOB, which are capable of using oxygen, nitrite, or nitrate as electron acceptor, with electrons derived from oxidation of either sulfide or elemental sulfur. The possible pathway of sulfate reduction by Anammox bacteria is not included, in view of its relatively slow rate compared to the dominant conventional metabolisms of Anammox bacteria 42 .…”

Section: Methodsmentioning

confidence: 99%

Model-Based Feasibility Assessment of Membrane Biofilm Reactor to Achieve Simultaneous Ammonium, Dissolved Methane, and Sulfide Removal from Anaerobic Digestion Liquor

Chen

Liu

Peng

et al. 2016

Sci Rep

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In this study, the membrane biofilm reactor (MBfR) is proposed to achieve simultaneous removal of ammonium, dissolved methane, and sulfide from main-stream and side-stream anaerobic digestion liquors. To avoid dissolved methane stripping, oxygen is introduced through gas-permeable membranes, which also from the substratum for the growth of a biofilm likely comprising ammonium oxidizing bacteria (AOB), anaerobic ammonium oxidation (Anammox) bacteria, denitrifying anaerobic methane oxidation (DAMO) microorganisms, aerobic methane oxidizing bacteria (MOB), and sulfur oxidizing bacteria (SOB). A mathematical model is developed and applied to assess the feasibility of such a system and the associated microbial community structure under different operational conditions. The simulation studies demonstrate the feasibility of achieving high-level (>97.0%), simultaneous removal of ammonium, dissolved methane, and sulfide in the MBfRs from both main-stream and side-stream anaerobic digestion liquors through adjusting the influent surface loading (or hydraulic retention time (HRT)) and the oxygen surface loading. The optimal HRT was found to be inversely proportional to the corresponding oxygen surface loading. Under the optimal operational conditions, AOB, DAMO bacteria, MOB, and SOB dominate the biofilm of the main-stream MBfR, while AOB, Anammox bacteria, DAMO bacteria, and SOB coexist in the side-stream MBfR to remove ammonium, dissolved methane, and sulfide simultaneously.

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Section: Methodsmentioning

confidence: 99%

Model-Based Feasibility Assessment of Membrane Biofilm Reactor to Achieve Simultaneous Ammonium, Dissolved Methane, and Sulfide Removal from Anaerobic Digestion Liquor

Chen

Liu

Peng

et al. 2016

Sci Rep

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“…43 Moreover, generally, conventional biological N removal is used for treating wastewaters with relatively low N concentrations (total N concentration less than 100 mg N L -1 ). 14 Several recent studies have shifted the focus to new biological nutrient removal processes, including single reactor system for high ammonia removal over nitrite (SHARON), anaerobic ammonium oxidation (ANAMMOX) 44,45 and completely autographic N removal over nitrite (CANON) systems. 11 These new processes are based on the partial nitrification of ammonium into nitrite combined with the anaerobic oxidation of ammonium.…”

Section: Biological N Removalmentioning

confidence: 99%

A review on the advances in nitrifying biofilm reactors and their removal rates in wastewater treatment

Chaali

Naghdi

Brar

et al. 2018

J of Chemical Tech & Biotech

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Growing demand for efficient wastewater treatment systems is spurring on the development of new technologies. Biofilm‐based reactors can be used for the treatment of a variety of wastewaters and these reactors are resistant to toxic environments. Bioreactors, such as sequencing batch biofilm and moving bed biofilm are advanced techniques to treat various types of wastewaters with diverse operating conditions. Ammonium oxidizing bacteria, nitrite oxidizing bacteria and Anammox (anaerobic ammonium oxidation) bacteria are reported to be responsible for nutrient removal. In recent decades, the performance of these systems has been studied widely and compared for a number of wastewater treatment applications. In general, they are particularly suitable for high‐rate nitrification and nitrogen removal. The efficiency of these reactors has been confirmed in the laboratory and large‐scale plants. Their efficiency depends on the surface area of the biocarrier, the filling percentage volume of biofilm carriers, organic loading and diffused aeration supply. Chemical oxygen demand removal of 50–98% was reported for <12 h hydraulic retention time, 0.2 to 6.5 mg L−1 dissolved oxygen concentration and temperature range 15–35 °C. Also, the ratio of nitrate to ammonium conversion was from 0.2 to 90 and N2 conversion was from 0 to 8.5 mg. This review studied each of these bioreactors in the removal of nutrients (nitrogen, phosphorus and oxygen) from different wastewaters and compared them to conventional treatment. The review also includes the relevant studies on laboratory and pilot‐scale bioreactors to enhance their performance and reduce their costs. © 2018 Society of Chemical Industry

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“…PCR-DGGE uses a GC-clamp primer (GC-clamp added to the 5´terminus of the forward primer) for amplification prior to gel electrophoresis. DGGE was used in previous studies of anammox samples (i) to detect key microorganisms that contributed to the loss of ammonium and nitrite in batch assay [64], (ii) to analyse bacterial population in the biofilm of the UASB reactor [39] and (iii) to study the microbial population in the anammox reactor [65]. DGGE has been commonly chosen to define phylogenetic relationships among bacteria because the technique can supply precise and abundant information concerning genetic diversity by separating different base-pair sequences (approximately 200-700 base pairs) [66].…”

Section: Denaturing Gradient Gel Electrophoresis (Dgge)mentioning

confidence: 99%

Enrichment of anaerobic ammonium oxidation (anammox) bacteria for short start-up of the anammox process: a review

Ibrahim

Yusof

Yusoff

et al. 2016

Desalination and Water Treatment

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A B S T R A C TThe application of the anaerobic ammonium oxidation (anammox) reaction in a biological nitrogen removal system to treat wastewater has become of great interest since its discovery. The anammox reaction is performed by anammox bacteria that belong to the Planctomycete phylum. The reaction occurs in the presence of ammonium using nitrite as the substrate under anaerobic conditions. However, the bacteria have an extremely slow growth rate and stringent metabolic conditions that cause difficulty in culturing and applying the system for wastewater treatment. Anammox enrichment has a long start-up period for the anammox process that hinders researchers using laboratory and full-scale systems for the first time. Many attempts have been made to culture anammox to establish a successful anammox culture with a shorter start-up period for the anammox reaction and high nitrogen removal activity. This paper reviews previous studies on anammox enrichment with emphasis on (i) inoculum selection, (ii) enrichment techniques and (iii) factors influencing anammox enrichment. This review will assist researchers in planning and designing an appropriate anammox enrichment. The findings should widen the application of anammox in biological nitrogen removal systems for nitrogenous wastewater.

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Comparison of sulfate-reducing and conventional Anammox upflow anaerobic sludge blanket reactors

Cited by 72 publications

References 34 publications

Model-Based Feasibility Assessment of Membrane Biofilm Reactor to Achieve Simultaneous Ammonium, Dissolved Methane, and Sulfide Removal from Anaerobic Digestion Liquor

Model-Based Feasibility Assessment of Membrane Biofilm Reactor to Achieve Simultaneous Ammonium, Dissolved Methane, and Sulfide Removal from Anaerobic Digestion Liquor

A review on the advances in nitrifying biofilm reactors and their removal rates in wastewater treatment

Enrichment of anaerobic ammonium oxidation (anammox) bacteria for short start-up of the anammox process: a review

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