Partial anammox achieved in full scale biofilm process for typical domestic wastewater treatment

Hou, Feng; Zhang, Ting; Peng, Yongzhen; Cao, Xun; Pang, Hongtao; Shao, Yanqing; Lu, Xianchun; Yuan, Jiangang; Chen, Xi; Jin, Zhang

doi:10.1007/s11783-021-1467-6

Cited by 37 publications

(6 citation statements)

References 28 publications

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“…IFAS as a hybrid system is highly preferred for operating PNA under mainstream conditions due to its more operability. The hybrid biofilm process developed by Hou et al ( 2021 ) operating at a short hydraulic retention time (HRT) of 8 h successfully enriched AnAOB in the anoxic zone and effectively removed contaminants from the water. Malovanyy et al ( 2015 ) treated mainstream wastewater by introducing suspended sludge into the MBBR reactor, and the denitrification efficiency increased from 36% ± 3% to 70% ± 4%.…”

Section: Ifas With Anammoxmentioning

confidence: 99%

Research progress of anaerobic ammonium oxidation (Anammox) process based on integrated fixed‐film activated sludge (IFAS)

Li,

Yu,

et al. 2024

Environ Microbiol Rep

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The integrated fixed‐film activated sludge (IFAS) process is considered one of the cutting‐edge solutions to the traditional wastewater treatment challenges, allowing suspended sludge and attached biofilm to grow in the same system. In addition, the coupling of IFAS with anaerobic ammonium oxidation (Anammox) can further improve the efficiency of biological denitrification. This paper summarises the research progress of IFAS coupled with the anammox process, including partial nitrification anammox, simultaneous partial nitrification anammox and denitrification, and partial denitrification anammox technologies, and describes the factors that limit the development of related processes. The effects of dissolved oxygen, influent carbon source, sludge retention time, temperature, microbial community, and nitrite‐oxidising bacteria inhibition methods on the anammox of IFAS are presented. At the same time, this paper gives an outlook on future research focus and engineering practice direction of the process.

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Section: Ifas With Anammoxmentioning

confidence: 99%

Research progress of anaerobic ammonium oxidation (Anammox) process based on integrated fixed‐film activated sludge (IFAS)

Li,

Yu,

et al. 2024

Environ Microbiol Rep

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“…The greater the concentration of COD, the more serious the pollution of organic matter in the water. The COD concentration is widely used as an important index to quantitatively study the degree of water pollution (Hou et al, 2021). As the main statistical data of water pollution discharge, it is an important evaluation index of water pollution in China (Chen et al, 2022).…”

Section: Construction Of the Urban Water Pollution Sd Modelmentioning

confidence: 99%

Simulation study of the multi-driver regulation strategy for an urban water pollution system

Huang

Jia

et al. 2022

Front. Environ. Sci.

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Water resources serve as the foundation for high-quality urban development. As water pollution has become a major impediment to high-quality urban development, solving the problem of urban water pollution is critical for attaining high-quality urban growth. This research analyzes both point and non-point sources of pollution and constructs an urban water pollution simulation system model from four subsystems: population, industry, cultivated land, and livestock and poultry. This study selects 2020 as the base year and the current year’s development situation as the base scenario and then sets the other five simulation scenarios according to the research area development plan. Using Yichang data in this model, the research simulated and predicted the total amount of urban COD pollution under different scenarios. The results show that: 1) The difference between the simulation results of the constructed urban water pollution system and the 2010–2020 historical data is within 10%, which shows that the constructed system can analyze the reality. 2) Under the benchmark scenario, from 2020–2030, the total amount of urban COD shows a downward trend. The pollution from population and livestock subsystems are reduced by 20.20 and 35.29%, respectively, the industrial subsystem is increased by 40.60%, and the cultivated land subsystem is increased by 0.56%. 3) Compared with the benchmark scenario, the urban COD pollution in five scenarios has been reduced by 8,400, 42,000, 21,700, 100, and 72,300 tons, respectively, among which water pollution control measures in scenario five have the best effect. 4) Only by comprehensively controlling all pollution sources (scenario 5) can the total amount of urban COD pollution be controlled within 450,000 tons in 2030, which will be reduced by over 20% compared with 2020. An urban water pollution system can be used to simulate the source composition and total change amount of water pollution in the process of urban development, which is of great significance for government departments to provide accurate counter-measures for urban water pollution control and management decisions.

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“…Nitritation combined with an anammox process using nitrite as an electron acceptor has attracted significant attention in recent years [1][2][3][4] . Nitritation is considered a sustainable and cost-effective autotrophic biological pathway (without organic matters) for nitrite supply [5][6][7] . In start-up nitritation, the selective elimination of nitrite-oxidizing bacteria (NOB) is critical 8,9 .…”

Section: Introductionmentioning

confidence: 99%

Pilot-scale ultrastable nitritation in municipal wastewater based on the loading rate switch strategy

Wang

Zhang

zeng

et al. 2023

Preprint

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In the present work, quick start-up ultrastable nitritation was successfully demonstrated in a pilot-scale sequencing batch reactor (SBR; V = 6.5 m3) treating real municipal wastewater (5.9°C–29.8°C). The SBR was operated under a high influent loading rate by aggressively discharging surplus sludge and controlling a short aeration time, resulting in a significant decrease of both ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria (NOB) abundances. Subsequently, the influent loading rate sharply dropped from 312 mg COD/(g VSS∙d) to 55 mg COD/(g VSS∙d) with the extension of aeration time. According to qPCR and batch test results, the AOB abundance increased 106-fold and 136% of its initial bioactivity level was recovered. The NOB abundance was maintained at a low level, resulting in incomplete nitrification and nitrite accumulation. Nitritation with an ultra-high nitrite accumulation ratio (NAR) of 97% started in seven days. Moreover, despite the decrease of temperature from 17.5°C to 5.9°C, a high NAR (98.1 ± 1.1%) was maintained for over 450 days. The NOB abundance was below the detection level, and a high AOB (Nitrosomonas; 0.95%) level was effectively maintained. Importantly, the average levels of ammonium and nitrite effluents were maintained at 8.3 mg N/L and 13.8 mg N/L, respectively, favoring the application of an anammox process. Therefore, the proposed nitritation start-up strategy provides a practical alternative for extending anammox into sewage treatments.

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Partial anammox achieved in full scale biofilm process for typical domestic wastewater treatment

Cited by 37 publications

References 28 publications

Research progress of anaerobic ammonium oxidation (Anammox) process based on integrated fixed‐film activated sludge (IFAS)

Research progress of anaerobic ammonium oxidation (Anammox) process based on integrated fixed‐film activated sludge (IFAS)

Simulation study of the multi-driver regulation strategy for an urban water pollution system

Pilot-scale ultrastable nitritation in municipal wastewater based on the loading rate switch strategy

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