anammox reactor inoculum nitrogen operated compounds behavior during iii nh
Batch enrichment of anammox bacteria and study of the ...
The anammox process for nitrogen removal from ... Av Beata Szatkowska and Bjarne Paulsrud Beata Szatkowska and Bjarne Paulsrud both work with Aquateam COWI AS. nitrogen is one of the compounds that are regu-lated in the discharge permit of Wastewater Treatment Plants (WWTPs) ... sludge during the first days of the process start-up.
[Get More]
Hindawi Publishing Corporation
DEMON technology makes possible nitrogen removal through the anammox pathway in a single bioreactor operated by cycles of aeration–no aeration controlled by pH. In this way, when pH values are increasing, there is an automatic decrease in the reactor aeration, and vice versa (Gonzalez-Martinez et al. 2015c; del Rio et al. 2017).
[Get More]
Anammox - Wikipedia
Inoculum containing bacteria with nitrifying activity was obtained from a lab-scale reactor which had been operated for over a year. A volume of 80 mL of biomass were used and the air injected in each test was 20, 30, 50, 100, 200 and 500 mL air min−1L−1 reactor and.
[Get More]
INFLUENCE OF AERATION STRATEGY ON BEHAVIOUR OF …
The nitrogen removal rate of reactor A lingered around 200 mg N l −1 day −1, and the nitrate balance was highly variable.At day 24, the air flow rates of reactors A and B were lowered from 40 to 30 l h −1, to keep the effluent nitrite levels in reactor A < 10 mg N l −1, but reactor A did not develop sufficient nitrogen removal, and the pulse‐feeding strategy was considered not to be ...
[Get More]
(PDF) The influence of the inoculum and the use of zeolite ...
Full-scale application of partial nitritation and anammox in a single suspended-growth sequencing batch (SBR) reactor presented here confirm the process suitable for removing nitrogen from ammonium-rich wastewater with low concentrations of BOD and suspended solids: details of simple and robust process control based on online ammonium or conductivity signals are discussed by describing the ...
[Get More]
The anammox process for nitrogen removal from wastewater ...
Reactor I used zeolite, while the reactor II was operated without zeolite. B: The inocula III and IV were used in parallel during the start-up of both SRBs, both without zeolite.
[Get More]
Review: Anaerobic ammonium oxidation for treatment of ...
· In this study, a simultaneous partial nitrification, Anammox and denitrification (SNAD) bioreactor was constructed for mature landfill leachate treatment, which exhibited favorable NH 4 +-N (98.9–99.9%), TN (90.7–94.9%) and bio-refractory organic compounds (46.2–67.7%) removal efficiencies.Stoichiometric analysis demonstrated that the synergy of ammonium-oxidizing bacteria and Anammox ...
[Get More]
Monitoring the stability of an Anammox reactor under high ...
Nitrogen removal from MBBR with deammonification process Values of different nitrogen compounds concentration in the influent and effluent are shown in Figure 2. The first period was the adaptation period for the biomass and nitrogen load was 2.58 gN/m2·d. During this period, around 80% of nitrogen was removed. According to anammox
[Get More]
Nitrogen Removal by a Nitritation-Anammox Bioreactor …
Ali Akbar Babaei, Roza Azadi, Nemat Jaafarzadeh, Nadali Alavi, Application and kinetic evaluation of upflow anaerobic biofilm reactor for nitrogen removal from wastewater by Anammox process, Iranian Journal of Environmental Health Science and Engineering, 10.1186/1735-2746-10-20, 10, 1, (2013).
[Get More]
Accelerated start-up, long-term performance and microbial ...
· Although preliminary work showed that K. stuttgartiensis could not reduce Mn(IV) or Fe(III) with NH 4 + as electron donor 6, the possibility of anammox bacteria to oxidize NH 4 …
[Get More]
The Influence of Stirring Speed, Temperature and Initial ...
The microbial population and physicochemical process parameters of a sequencing batch reactor for nitrogen removal from urine were monitored over a 1.5-year period. Microbial community fingerprinting (automated ribosomal intergenic spacer analysis), 16S rRNA gene sequencing, and quantitative PCR on nitrogen cycle functional groups were used to characterize the microbial population.
[Get More]
The role of inoculum and reactor configuration for ...
Phase 1 – promoting anammox. Overall nitrogen conversion. In reactor 1, stable mean effluent concentrations of 308.5 mg NH 4 + ‐N l −1 and 31.5 mg NO 3 ‐ ‐N l −1 were reached within the first week of reactor operation and maintained throughout phase 1. Nitrite was almost completely eliminated during one cycle resulting in low effluent concentrations below 0.6 mg NO 2 ‐ ‐N l ...
[Get More]
Development of a fixed-bed anammox reactor with high ...
Open Access Article This Open Access Article is licensed under a Creative Commons Attribution 3.0 Unported Licence This Open Access Article is licensed under a Creative Commons Attribution 3.0 Unported Licence
[Get More]
CANON and Anammox in a gas-lift reactor | FEMS ...
The lab-scale upflow anaerobic biofilm reactor was successfully operated for the treatment of synthetic wastewater with high nitrogen load by Anammox (anaerobic ammonium oxidation) process. During...
[Get More]
Integrating landfill bioreactors, partial nitritation and ...
The anammox activity of the enrichment culture was tested every 2 months during the operation of the reactor. Anammox activity was detected in the batch incubations for the first time after 4 months. This activity increased with a doubling time of 27 days in the following 4 months and reached a …
[Get More]
New Anaerobic, Ammonium-Oxidizing Community …
During Period III, the reactor was operated for 67 days with real PN effluent without diluting the composition. The temperature of the mixed liquor in the landfill bioreactor, anoxic reactor and aerobic reactor was maintained at 28 ± 1 °C. The anammox reactor was operated at …
[Get More]
Start‐up and enrichment of a granular anammox SBR to …
Anammox, an abbreviation for anaerobic ammonium oxidation, is a globally important microbial process of the nitrogen cycle that takes place in many natural environments. The bacteria mediating this process were identified in 1999, and were a great surprise for the scientific community. " Anammox" is also the trademarked name for an anammox-based ammonium removal technology developed by the ...
[Get More]
Application and kinetic evaluation of upflow anaerobic ...
Anammox activity is defined as the nitrogen removal rate (sum of NH 4 + and NO 2 −) in the absence of O 2 and non-limiting concentrations of NH 4 + and NO 2 −. In Phase I, the reactor operation was controlled only on the basis of online measurements of the residual NH 4 + concentration and anammox activity measured in batch tests twice a ...
[Get More]
Full-Scale Nitrogen Removal from Digester Liquid with ...
· The anammox biomass (∼80% enriched) from the sequencing batch reactor (SBR) operated at 30°C was used as an inoculum for the nitritation-anammox SBR. After inoculation, the bioreactor was operated at 25°C and anaerobically for 2 weeks with 420 mg N/liter (30 mM) nitrite and 588 mg N/liter (42 mM) ammonium as the substrates in the influent (flow rate, 1.8 liters/day).
[Get More]
Activity and growth of anammox biomass on aerobically …
Monitoring the anammox activity usually involves the chemical analysis of relevant nitrogen (N) compounds (i.e., NH4 +, NO 2-, and NO 3-) in the liquid phase. However, this strategy might be unsuccessful during the initial stages of the enrichment process, when the number of anammox cells is too low and their activity can
[Get More]
Regime Shift and Microbial Dynamics in a Sequencing …
The applied temperature profile is shown in Fig. S1 and was as follows: reactor operation started at week 0 and during phase I, the reactors were operated at 20°C (15 weeks); in phase II, the temperature was gradually decreased by 0.5°C every 7 days down to a temperature of 10°C (weeks 16–35); phase III covered operation at constant 10°C (week 36–45).
[Get More]
Enhanced ammonia removal at room temperature by pH ...
· The SBR reactor was operated in three different stages (): (I) the nitrite loading rate (NiLR) was kept constant at 0.15 g N L −1 d −1 while the concentration of NaCl was stepwise increased from 0 to 20 g NaCl L −1 in periods of 6–12 days of duration (the first increase in the NaCl concentration was registered on day 251); (II) this is a transition period meaning that the concentration ...
[Get More]