Carbon sequestration pathway of inorganic carbon in partial nitrification sludge

Liu, Xiaoning; Wang, Hua‐Qin; Li, Haixiang; Jin, Yanchao; Zhang, Wenjie

doi:10.1016/j.biortech.2019.122101

Cited by 18 publications

(8 citation statements)

References 32 publications

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“…The gas was collected by a completely enclosed reaction device. A gas sampling bag was used to collect the gas from the exhaust valve at the top of the reactor and measure the gas production rate of the EGSB reactor (Liu et al, 2019). The content of N2O and CO2 in the gas samples was determined using a gas chromatograph (Shanghai Jingke, GC-112A) with a thermal conductivity detector, the minimum detection limit was 110 -9 g/mL).…”

Section: Methodsmentioning

confidence: 99%

Rapid start-up of anammox reactor using granular sludge supported on activated carbon

2020

Global NEST: The International Journal

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<p>The long start-up time and high demand of anaerobic ammonium oxidation (anammox) limit the practical applications of the anammox process. In this study, granular sludge supported on activated carbon (AC) was used as seed sludge. The start-up time of the reactor was substantially shortened, and the expanded granular sludge bed (EGSB) reactor could be started quickly (in only 17 days). The nitrogen load rate (NLR) increased from 0.61 kg m-3 d-1 to 1.19 kg m-3 d-1, the removal rate of total nitrogen (TN) increased from 78.04% to83.15%, and the final ratio NH4+: NO2-: NO3- was 1:1.33:0.30. Moreover, in the gas analysis phase, the reactor load could be further improved and increased to 1.70 kg m-3 d-1 from the 18th–22nd day, and the reactor run stably. During this period, N2O and CO2 production was 0.8% and 0.02%, respectively. According to the analysis of microorganisms, the main functional microorganism in the reactor was Candidatus Kuenenia. The content of Candidatus Kuenenia increased by 5.45% after the reactor was started successfully. The color of sludge was brick red. This showed that the operation mode and inoculated sludge employed in this study are highly effective for the fast start-up of an EGSB reactor.</p>

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Section: Methodsmentioning

confidence: 99%

Rapid start-up of anammox reactor using granular sludge supported on activated carbon

2020

Global NEST: The International Journal

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“…NOB control is a major challenge for the mainstream PN/A process. The growth rate of AOB is almost the same as that of NOB in the approximate temperature range of 10-20 • C, which makes it impossible to screen NOB effectively [57,58]. At present, the strategy of NOB inhibition includes maintaining the concentration of ammonia nitrogen in the influent at more than 2 mg/L (the growth rate of NOB is faster than that of AOB at low substrate concentration), instantaneous anoxia (real-time aeration control), which is proved operational feasible in the Strass sewage treatment plant [59].…”

Section: Regulation Of Functional Bacteriamentioning

confidence: 99%

Application of the Anammox in China—A Review

Wen

Jin

Zhang

2020

IJERPH

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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.

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“…Anaerobic ammonia oxidation (Anammox) is a new nitrogen removal technology that has attracted increasing attention for treating ammonia-rich wastewater (Park et al 2017;Liu et al 2019;Ma et al 2019a;Wen et al 2020). Under anaerobic conditions, anammox bacteria, as autotrophic microorganisms, can use nitrite as an electron acceptor and ammonia nitrogen as an electron donor and can convert them into N 2 (Mulder et al 1995), which offers the advantages of decreasing operating costs and producing less sludge (Kuenen 2008;Abma et al 2010;Feng et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Integration of anammox into the MBR process for main stream sewage treatment

Zhang

2021

Journal of Water Supply: Research and Technology-Aqua

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The integration of Anaerobic ammonia oxidation (anammox) into the membrane bioreactor (MBR) process (AX-MBR) is proposed in this study to reduce operating costs. The temperature was not controlled during the study. Anammox, denitrification, and nitrification were studied in the AX-MBR for 210 days. The reactor was fed with mainstream sewage from Guilin City, China. The results showed that AX-MBR could run with reduced dissolved oxygen (DO) concentration, and COD, NH4+-N, and total nitrogen removal were maintained or improved. The microbial analysis results demonstrated that the added anammox sludge could survive in the AX-MBR, but the sludge microbial diversity decreased. Nitrospira, Candidatus Kuenenia, and Nitrosomonas dominated the anammox sludge. In a word, the AX-MBR developed in this study could treat mainstream sewage with the appropriate management, and the operation costs are expected to reduce by decreasing the amount of aeration.

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Carbon sequestration pathway of inorganic carbon in partial nitrification sludge

Cited by 18 publications

References 32 publications

Rapid start-up of anammox reactor using granular sludge supported on activated carbon

Rapid start-up of anammox reactor using granular sludge supported on activated carbon

Application of the Anammox in China—A Review

Integration of anammox into the MBR process for main stream sewage treatment

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