Abstract
With China’s recent commitment to reducing carbon emissions and achieving carbon neutrality, anaerobic digestion and anaerobic ammonium oxidation (anammox) have emerged as promising technologies for treating nitrogenous organic wastewater. Anaerobic digestion can convert organic matter into volatile fatty acids (VFAs), methane, and other chemicals, while anammox can efficiently remove nitrogen with minimal energy consumption. This study evaluates the principles and characteristics of enhanced chemical flocculation and bioflocculation, as well as membrane separation, for capturing organic matter. Additionally, the paper evaluates the production of acids and methane from anaerobic digestion, exploring the influence of various factors and the need for control strategies. The features, challenges, and concerns of partial nitrification-anammox (PN/A) and partial denitrification-anammox (PD/A) are also outlined. Finally, an integrated system that combined organic capture, anaerobic digestion, and anammox is proposed as a sustainable and effective solution for treating nitrogenous organic wastewater and recovering energy and resources.
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This work was financially supported by the National Natural Science Foundation of China (No. 51978658).
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Jianming Huang: conceptualization, investigation, formal analysis, writing — original draft, preparation, writing — review and editing. Chunrong Wang: conceptualization, investigation, supervision, writing — review and editing. Shujun Zhang: conceptualization, investigation, methodology, formal analysis. Xiaoyu Han: conceptualization, methodology, investigation. Rongfei Feng: formal analysis, writing — original draft, preparation. Yang Li: formal analysis, writing — original draft, preparation. Xiaoyan Huang: formal analysis, writing — original draft, preparation. Jianbing Wang: conceptualization, investigation, supervision, funding.
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Highlights
• Evaluating the efficacy of integrating organics capture, anaerobic digestion, and anammox in nitrogenous organic wastewater treatment systems.
• Assessing the significance of organics capture efficiency in enhancing anaerobic digestion and anammox processes.
• Exploring the role of acids and methane production in the organic recovery process of anaerobic digestion.
• Investigating the feasibility of anammox as a simple and effective technology for treating wastewater with high ammonia and low organics.
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Huang, J., Wang, C., Zhang, S. et al. Optimizing nitrogenous organic wastewater treatment through integration of organic capture, anaerobic digestion, and anammox technologies: sustainability and challenges. Environ Sci Pollut Res 30, 76372–76386 (2023). https://doi.org/10.1007/s11356-023-27410-6
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DOI: https://doi.org/10.1007/s11356-023-27410-6