Research on Startup Process and Influencing Factors of Half-Nitrosofication in CANON Reactor

2013 ◽  
Vol 807-809 ◽  
pp. 1464-1468
Author(s):  
Yi Wang ◽  
La Hua Jin
Keyword(s):  
Ammonia Oxidation ◽  
Accumulation Rate ◽  
Ammonia Nitrogen ◽  
Anammox Bacteria ◽  
Bacteria Growth ◽  
Anaerobic Ammonia Oxidation ◽  
High Ammonia ◽  
Environmental Requirements ◽  
Simulated Wastewater ◽  
Startup Process

The experimental study on startup process of half-nitrosofication for high ammonia nitrogen simulated wastewater has been accomplished with a reactor of completely autotrophic nitrogen removal over nitrite (CANON). The startup process and its influences of the concentration of influent , DO and pH were analyzed with the experimental results. The results show that the conversion rate of to is close to 55%, the accumulation rate of is over 95% and the rate of to steadily keeps as 1.02~1.24 under the condition of influent of 400 mg/L, pH of 7.6~8.2, DO of 0.95~1.3mg/L, HRT of 1.5d and water temperature of 17~27°C, which meet the environmental requirements for anaerobic ammonia oxidation bacteria growth, and half-nitrosofication was achieved in the CANON reactor, which create good conditions for further enrichment of anammox bacteria for the operation of the CANON reactor.

scholarly journals Experimental research on the treatment of low C/N wastewater by SBBR-UASB combined process

2020 ◽  
Vol 218 ◽  
pp. 03027
Author(s):  
Yafeng Li ◽  
Huixue Hu ◽  
Jianbo Wu
Keyword(s):  
Ammonia Oxidation ◽  
Ammonia Nitrogen ◽  
Uasb Reactor ◽  
Stable Operation ◽  
Coupling Mechanism ◽  
Anaerobic Ammonia Oxidation ◽  
High Ammonia ◽  
Oxidation Stage ◽  
In Series ◽  
Two Stages

The research takes low C/N ratio and high ammonia nitrogen sewage as the treatment object, connects the SBBR reactor and UASB reactor after stable operation in series, and studies the PN-ANAMMOX coupling mechanism. The research analyze the effect of the influencing factors of the nitrification process on the subsequent anaerobic ammonia oxidation stage. The two stages adapt to each other that constantly debug and run. The research investigate its denitrification effect, analyze the biological denitrification mechanism and determine the optimal working conditions.

scholarly journals Application of the Anammox in China—A Review

2020 ◽  
Vol 17 (3) ◽  
pp. 1090 ◽  
Author(s):  
Ruolan Wen ◽  
Yue Jin ◽  
Wenjie Zhang
Keyword(s):  
Ammonia Oxidation ◽  
Wastewater Treatment Plants ◽  
Ammonia Nitrogen ◽  
Capital Costs ◽  
Greenhouse Gases Emissions ◽  
Anaerobic Ammonia Oxidation ◽  
High Ammonia ◽  
Nitrogen Concentrations ◽  
Anammox Process ◽  
Selection Of

Anaerobic ammonia oxidation (anammox) has been one of the most innovative discoveries for the treatment of wastewater with high ammonia nitrogen concentrations. The process has significant advantages for energy saving and sludge reduction, also capital costs and greenhouse gases emissions are reduced. Recently, the use of anammox has rapidly become mainstream in China. This study reviews the engineering applications of the anammox process in China, including various anammox-based technologies, selection of anammox reactors and attempts to apply them to different wastewater treatment plants. This review discusses the control and implementation of stable reactor operation and analyzes challenges facing mainstream anammox applications. Finally, a unique and novel perspective on the development and application of anammox in China is presented.

Reason Analysis of ANAMMOX Occurred in a Landfill Leachate Treatment System

2014 ◽  
Vol 955-959 ◽  
pp. 2322-2325
Author(s):  
Li Hua Liang ◽  
Su Lin Kuang ◽  
Ting Wang ◽  
Yuan Jing Ji ◽  
Sai Zhang
Keyword(s):  
Organic Matter ◽  
Landfill Leachate ◽  
Ammonia Oxidation ◽  
Ph Value ◽  
Ammonia Nitrogen ◽  
Anammox Bacteria ◽  
Leachate Treatment ◽  
Anaerobic Ammonia Oxidation ◽  
High Concentrations ◽  
Biological Treatment Process

The biological treatment process of landfill leachate in Beijing Liulitun landfill is a multistage A/O technology, in which a large amount of ANAMMOX (Anaerobic ammonia oxidation, ANAMMOX) bacteria were found in the sludge. There are several factors impacting the activity of ANAMMOX bacteria, including pH value, temperature and HRT which in this process are suitable for the survival of ANAMMOX bacteria. Especially, low dissolved oxygen is an essential factor as the provider of electron donor for nitrite formation. Although the high concentrations of organic matter, ammonia nitrogen and nitrite will inhibit the occurrence of ANAMMOX, ANAMMOX bacteria can self-detoxification by forming a low-poison habitat by consuming ammonia and nitrite as well as organic matter by heterotrophic ANAMMOX bacteria.

scholarly journals Experimental study on the influencing factors of SBBR nitrosation controlled by sodium chlorate inhibitor

2020 ◽  
Vol 218 ◽  
pp. 03030
Author(s):  
Yafeng Li ◽  
Chong Gao ◽  
Jianbo Wu
Keyword(s):  
Influencing Factors ◽  
Nitrogen Removal ◽  
High Efficiency ◽  
Ammonia Oxidation ◽  
Sodium Chlorate ◽  
Ammonia Nitrogen ◽  
Operating Conditions ◽  
Reaction Conditions ◽  
Anaerobic Ammonia Oxidation ◽  
High Ammonia

The research takes low C/N ratio sewage as the research object, and quickly realizes the accumulation of nitrite nitrogen by adding inhibitors into the SBBR reactor, and realizes the nitrogen removal by anaerobic ammonia oxidation in the reactor. Determining the optimal operating parameters is of farreaching significance for the treatment of wastewater with high ammonia nitrogen and low C/N and achieving economical and efficient nitrogen removal. Control the ammonia oxidation reaction, keep the nitrification process in the nitrosation stage, and realize the rapid accumulation of NO2--N is the problem that the reactor needs to solve. This experiment uses a combination of batch test and periodic test to conduct experimental research on various influencing factors in the partial nitrosation process: temperature, pH, DO and find the best operating conditions to achieve high-efficiency accumulation of NO2--N and optimize the reaction conditions.

scholarly journals Nitrogen removal via a single-stage PN–Anammox process in a novel combined biofilm reactor

2017 ◽  
Vol 77 (6) ◽  
pp. 1483-1492 ◽  
Author(s):  
Yue-mei Han ◽  
Feng-xia Liu ◽  
Xiao-fei Xu ◽  
Zhuo Yan ◽  
Zhi-jun Liu
Keyword(s):  
Total Nitrogen ◽  
Nitrogen Removal ◽  
Ammonia Oxidation ◽  
Biofilm Reactor ◽  
Nitrifying Bacteria ◽  
Anammox Bacteria ◽  
Ammonia Oxidizing Bacteria ◽  
High Ammonia ◽  
Total Nitrogen Removal ◽  
Anammox Process

Abstract This study developed a partial nitrification (PN) and anaerobic ammonia oxidation (Anammox) process for treating high-ammonia wastewater using an innovative biofilm system in which ammonia oxidizing bacteria grew on fluidized Kaldnes (K1) carriers and Anammox bacteria grew on fixed acryl resin carriers. The airlift loop biofilm reactor (ALBR) was stably operated for more than 4 months under the following conditions: 35 ± 2 °C, pH 7.5–8.0 and dissolved oxygen (DO) of 0.5–3.5 mg/L. The results showed that the total nitrogen removal efficiency reached a maximum of 75% and the total nitrogen removal loading rate was above 0.4 kg/(d·m3). DO was the most efficient control parameter in the mixed biofilm system, and values below 1.5 mg/L were observed in the riser zone for the PN reaction, while values below 0.8 mg/L were observed in the downer zone for the Anammox reaction. Scanning electron microscopy and Fluorescence In Situ Hybridization images showed that most of the nitrifying bacteria were distributed on the K1 carriers and most of the Anammox bacteria were distributed within the acryl resin carriers. Therefore, the results indicate that the proposed combined biofilm system is easy to operate and efficient for the treatment of high-ammonia wastewater.

Molecular evidence of the existence of anaerobic ammonia oxidation bacteria in the gut of polychaete (Neanthes glandicincta)

2016 ◽  
Vol 1 (1) ◽  
pp. 19 ◽  
Author(s):  
Meng Li ◽  
Ji-Dong GU
Keyword(s):  
Ammonia Oxidation ◽  
Coastal Sediments ◽  
Anammox Bacteria ◽  
Molecular Evidence ◽  
Rrna Gene ◽  
Natural Environments ◽  
Axial Distribution ◽  
Anaerobic Ammonia Oxidation ◽  
Neanthes Glandicincta

Neanthes are one of the most important groups of polychaete in coastal sediments, which play an important role on the nutrient cycling in coastal sediments. Here we report on the existence of anammox bacteria in the gut of polychaete Neanthes glandicincta based on the analysis of 16S rRNA gene and fluorescence in situ hybridization (FISH). Three distinct clusters of anammox bacteria are found in different gut sections of N. glandicincta, and one of them is considered as a novel, gut specific anammox bacteria after comparing with the anammox bacteria recovered from surrounding pre-digested sediment. The uniform axial distribution of anammox bacteria in different gut sections of N. glandicincta is also found in present study. These results extend our knowledge of microbial ecology of anammox bacteria in the natural environments.

Identification of anammox bacteria in a full-scale deammonification plant making use of anaerobic ammonia oxidation

2007 ◽  
Vol 30 (5) ◽  
pp. 408-412 ◽  
Author(s):  
Gerd Innerebner ◽  
Heribert Insam ◽  
Ingrid H. Franke-Whittle ◽  
Bernhard Wett
Keyword(s):  
Ammonia Oxidation ◽  
Full Scale ◽  
Anammox Bacteria ◽  
Anaerobic Ammonia Oxidation

scholarly journals Pertumbuhan Bakteri Anaerobic Ammonia Oxidation (Anammox) Pada Salinitas 2 dan 9 Persen

2018 ◽  
Vol 9 (2) ◽  
pp. 55-62
Author(s):  
Wijanarka Wijanarka ◽  
Sudarno Sudarno ◽  
Novi A. Pratama
Keyword(s):  
Waste Water ◽  
Environmental Effect ◽  
Ammonia Oxidation ◽  
Ammonium Nitrogen ◽  
Anammox Bacteria ◽  
Nitrogen Gas ◽  
Selective Media ◽  
Gram Staining ◽  
Anaerobic Ammonia Oxidation ◽  
Anammox Process

When ammonia in waste water is lost inappropriately, it  will raise an adverse environmental effect for the aquatic cycle. Anammox, anaerobic ammonia oxidation, is a novel process in which nitrite is used as an electron acceptor in the conversion of ammonium to nitrogen gas. The anammox process removes ammonium in the autrotrophic system by leaving little biomass. This study aims to analyze the effect of salinity on the growth of anammox bacteria. The samples used were from the brackish water sediments of the East Flood Canal River of Semarang. The isolation was done by gram staining and the bacteria were inoculated on media with different salinity concentration and the growth was measured using spectrophotometer. The results showed that anammox bacteria had a higher growth rate of 3% (control) when it was grown on a medium with a concentration of 9%. Anammox bacteria grown on anammox selective media showed that the bacteria were able to adapt to environments with different salinity concentrations of 2% and 9%. Key words: anammox, ammonium, nitrogen, anammox bacteria.

Model experiments on improving nitrogen removal in laboratory scale subsurface constructed wetlands by enhancing the anaerobic ammonia oxidation

2007 ◽  
Vol 56 (3) ◽  
pp. 145-150 ◽  
Author(s):  
D. Paredes ◽  
P. Kuschk ◽  
F. Stange ◽  
R.A. Müller ◽  
H. Köser
Keyword(s):  
Nitrogen Removal ◽  
Ammonia Oxidation ◽  
Operating Conditions ◽  
Laboratory Scale ◽  
Synthetic Wastewater ◽  
Scale Model ◽  
Model Experiments ◽  
Anaerobic Ammonia Oxidation ◽  
High Ammonia ◽  
Process Strategy

Anaerobic ammonia oxidation (Anammox) has been identified as a new general process-strategy for nitrogen removal in wastewater treatment. In order to evaluate the role and effects of the Anammox process in wetlands, laboratory-scale model experiments were performed with planted fixed bed reactors. A reactor (planted with Juncus effusus) was fed with synthetic wastewater containing 150–200 mg L−1 NH+4 and 75–480 mg L−1 NO−2. Under these operating conditions, the plants were affected by the high ammonia and nitrite concentrations and the nitrogen removal rate fell within the same range of 45–49 mg N d−1 (equivalent to 0.64–0.70 g Nm−2d−1) as already reported by other authors. In order to stimulate the rate of nitrogen conversion, the planted reactor was inoculated with Anammox biomass. As a result, the rate of nitrogen removal was increased 4–5-fold and the toxic effects on the plants also disappeared. The results show that, in principle, subsurface flow wetlands can also function as an “Anammox bioreactor”. However, the design of a complete process for the treatment of waters with a high ammonia load and, in particular, the realisation of simple technical solutions for partial nitrification have still to be developed.

Startup of Seawater Anaerobic Ammonia Oxidation Reactor

2014 ◽  
Vol 884-885 ◽  
pp. 582-585
Author(s):  
Jing Wang ◽  
Jian An Hao ◽  
Ai Jun Zhang ◽  
Bo Yang ◽  
Tian Xiang Jiang ◽  
...  
Keyword(s):  
Retention Time ◽  
Hydraulic Retention Time ◽  
Ammonia Oxidation ◽  
Removal Rate ◽  
Ammonia Nitrogen ◽  
Second Stage ◽  
Nitrite Nitrogen ◽  
Anaerobic Ammonia Oxidation ◽  
Oxidation Reactor ◽  
Two Stages

Muds and water samples collected from the Bohai Sea were selected to build seawater anaerobic ammonia oxidation reactor. The reaction volume was 18 L. The startup of reactor was divided into two stages. The first stage lasted five months and hydraulic retention time was 18L/7 d. The second stage lasted a month and hydraulic retention time was 18L/14 d. Ammonia and nitrite of influent and effluent were monitored. During the first stage, the removal rate of ammonia nitrogen was around 50% and the nitrite nitrogen increased by 50%. During the second stage, the removal rate of ammonia nitrogen reached more than 75% and the removal rate of nitrite nitrogen reached more than 90%. The removal ratio of ammonia nitrogen and nitrate nitrogen was about 1:1.17. These results suggested reactor start-up successful. Microbial community in reactor was monitored by polymerase chain reaction. Once the reactor started, specific bands of anaerobic ammonia oxidation microorganisms were found.

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