Nitrogen Removal Efficiency for Pharmaceutical Wastewater with a Single-Stage Anaerobic Ammonium Oxidation Process

Zuo, Lushen; Yao, Hong; Li, Huayu; Fan, Liru; Jia, Fangxu

doi:10.3390/ijerph17217972

Cited by 10 publications

(2 citation statements)

References 19 publications

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“…Herein, "low strength" refers to domestic wastewater which can have ammonia concentrations up to 75 mg/L (Metcalf and Eddy Inc., 2003), and is contrasted with "high strength" sources such as landfill leachate, return sludge from anaerobic digestors, and industrial wastewater (e.g. in agriculture, aquaculture, pharmaceutical, oil and gas, and meat processing), which can have ammonia concentrations of 500 to 2500 mg/L (Aqeel and Liss, 2020;Brennan et al, 2021;Kushwaha et al, 2011;Miao et al, 2019;Munirasu et al, 2016;Turcios and Papenbrock, 2014;Vaneeckhaute et al, 2017;Zuo et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Toward More Efficient and Sustainable Autotrophic Ammonia Removal From Wastewater

Ronan

2024

Preprint

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There is significant need to adapt biological nitrogen removal (BNR) systems to meet the evolving needs of future generations, such that the deleterious impacts of reactive nitrogen pollution can be mitigated in a cost-effective and sustainable manner. The overall goal of this research was therefore to explore autotrophic ammonia removal from a future-facing perspective, in order to generate insights that could inform potential solutions for more stable and sustainable BNR. Three chapters of this dissertation are manuscripts that focus on a particular challenge with respect to the operation of BNR systems, including: i. influent streams with very high ammonia concentrations; ii. greenhouse gas emissions during autotrophic ammonia oxidation; and iii. incomplete ammonia removal caused by alkalinity depletion. Chapter2incorporatedalargeextantofrecentresearchtoassessthelimitationsofconventionalpractices for treating high strength ammonia wastewater and provides a synthesis of emerging approaches for more cost-effective and sustainable treatment. The advantages of exploiting biofilm and aerobic granular sludge technologies were specifically investigated, as was the use of anammox-based processes as beneficial alternatives to conventional nitrification and denitrification. Chapter 3 used novel growth systems to investigate CO2 emissions during autotrophic ammonia oxidation and demonstrated a linear relationship between ammonia removal and gaseous CO2 production. The results provided evidence to suggest that the current approach of excluding bicarbonate-derived CO2 emissions from GHG accounting of BNR processes may lead to an underestimation of the climate change impact of conventional wastewater treatment systems. Chapter 4 investigated the nitrification performance of fixed-film bioreactors with different biomass retention characteristics, to determine the effect of enhanced biomass retention towards improved nitrification during periods of alkalinity induced stress. Although a higher biomass concentration offered the capacity to achieve faster ammonia removal rates in batch mode, the bioreactors exhibited similar performance in continuous-flow mode and the retention of additional nitrifying biomass did not provide any biomass concentration-dependent mechanisms for improved resilience to acidic conditions. Overall, the work described herein represents progress towards a more complete understanding of autotrophic ammonia oxidation as it applies to the stable and sustainable operation of BNR systems.

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Section: Introductionmentioning

confidence: 99%

Toward More Efficient and Sustainable Autotrophic Ammonia Removal From Wastewater

Ronan

2024

Preprint

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“…Anaerobic ammonium oxidation (ANAMMOX), sequencing batch reactors (SBRs), upflow anaerobic sludge blanket, aerobic granular sludge sequencing bioreactor (GSBR), membrane bioreactor (MBR), constructed wetland and various combined processes are the main methods used to date. An ANAMMOX process with an integrated biofilm-activated sludge system was effective for treating pharmaceutical wastewater with a high chemical oxygen demand (COD) concentration (1,000 mg/L), and TN removal loading rate and efficiency were 1.0 kg/m 3 /d and 75.2%, respectively (Zuo et al, 2020). Previous studies have analyzed the concentrations of pharmaceuticals and their main metabolites in the liquid and solid phases of activated sludge from SBR and MBR using liquid chromatography-tandem mass spectrometry (LC-MS/MS).…”

Section: Introductionmentioning

confidence: 99%

Study on Advanced Nitrogen Removal and Microbial Community Structure of Traditional Chinese Medicine Wastewater by a Novel System Coupling Anaerobic Sequencing Batch Reactor and Modified Sequencing Batch Biofilm Reactor

Wang

Jiang²,

Ma³

et al. 2022

Front. Environ. Sci.

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To improve the efficiency of nitrogen removal from pharmaceutical wastewater, wastewater from traditional Chinese medicine was treated in an anaerobic sequencing batch reactor (ASBR) combined with a modified sequencing batch biofilm reactor (SBBR). The chemical oxygen demand (COD) and total nitrogen (TN) contents were 3,750 ± 50 mg/L and 210 ± 10 mg/L, respectively. After 99 days of start-up and domestication, the COD, NH4+-N, and TN contents in the effluent were 230 ± 10 mg/L, 1 ± 0.5 mg/L, and 5 ± 3 mg/L, respectively, and the removal efficiencies reached more than 93.5, 99, and 96%, respectively. Among these results, the COD removal efficiency in traditional Chinese medicine wastewater with an ASBR reached more than 85%, and the effluent and raw water were mixed to adjust the C/N ratio in the SBBR influent. The initial operation mode of the improved SBBR was anaerobic–aerobic–anoxic. When the C/N ratio in the influent was adjusted to 5, the simultaneous nitrification and denitrification (SND) in the aerobic section was gradually enhanced, and the endogenous denitrification (ED) in the anoxic section gradually decreased. In conclusion, deep denitrification of the system was achieved only through SND, and the running time of the cycle was shortened from the initial 24 to 4.6 h. High-throughput sequencing analysis showed that the relative abundances of Bacteroidetes and Proteobacteria in the system were 39.69 and 37.34%, respectively. The content of Firmicutes with denitrification in the system was also high, accounting for 5.17%. At the genus level, the bacteria with denitrification functions in the system were mainly Thauera and unidentified_Sphingobacteriales, accounting for 5.67 and 1.66% of the system, respectively. In addition, there was heterotrophic nitrification–aerobic denitrification (HN-AD) activated in the system, including Denitratisoma, Paracoccus, and Pseudomonas. The total relative abundance of these bacteria was 0.612%. Their existence may be one of the reasons for the good effect of SND in this system.

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Recent advancements in the biological treatment of high strength ammonia wastewater

Ronan

Aqeel

Wolfaardt

et al. 2021

World J Microbiol Biotechnol

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Nitrogen Removal Efficiency for Pharmaceutical Wastewater with a Single-Stage Anaerobic Ammonium Oxidation Process

Cited by 10 publications

References 19 publications

Toward More Efficient and Sustainable Autotrophic Ammonia Removal From Wastewater

Toward More Efficient and Sustainable Autotrophic Ammonia Removal From Wastewater

Study on Advanced Nitrogen Removal and Microbial Community Structure of Traditional Chinese Medicine Wastewater by a Novel System Coupling Anaerobic Sequencing Batch Reactor and Modified Sequencing Batch Biofilm Reactor

Recent advancements in the biological treatment of high strength ammonia wastewater

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