ArticleWater research X2020
Limited simultaneous nitrification-denitrification (SND) in aerobic granular sludge systems treating municipal wastewater: Mechanisms and practical implications.
Article in Water research X, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 140 citations in OpenAlex.
- Community succession and functional trait reorganization in a continuous aerobic denitrification reactor under repeated hydraulic retention time reductions.Bioprocess and biosystems engineering · 2026Article
- Article
- Genome-resolved metatranscriptomics unveils distinct microbial functionalities across aggregate sizes in aerobic granular sludge.Environmental science and ecotechnology · 2025Article
- Genome-Resolved Metatranscriptomics Provide Insights on Immigration Influence in Structuring Microbial Community Assembly of a Full-Scale Aerobic Granular Sludge Plant.Environmental science & technology · 2025Article
- Optimization of Simultaneous Nutrients and Chemical Oxygen Demand Removal from Anaerobically Digested Liquid Dairy Manure in a Two-Step Fed Sequencing Batch Reactor System Using Taguchi Method and Grey Relational Analysis.Applied biochemistry and biotechnology · 2024Article
- Research progress of novel bio-denitrification technology in deep wastewater treatment.Frontiers in microbiology · 2023Review
- Hydrolysis capacity of different sized granules in a full-scale aerobic granular sludge (AGS) reactor.Water research X · 2022Article
- Diffusion of soluble organic substrates in aerobic granular sludge: Effect of molecular weight.Water research X · 2022Article
- An efficient anoxic/aerobic/aerobic/anoxic process for domestic sewage treatment: From feasibility to application.Frontiers in microbiology · 2022Article
- Impact of hydraulic retention time on swine wastewater treatment by aerobic granular sludge sequencing batch reactor.Environmental science and pollution research international · 2021Article
- Particulate substrate retention in plug-flow and fully-mixed conditions during operation of aerobic granular sludge systems.Water research X · 2020Article
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Simultaneous nitrification-denitrification (SND) is, in theory, a key advantage of aerobic granular sludge systems over conventional activated sludge systems. But practical experience and literature suggests that SND and thus total nitrogen removal are limited during treatment of municipal wastewater using AGS systems. This study thus aims at quantifying the extent and understanding the mechanisms of SND during treatment of municipal wastewater with aerobic granular sludge (AGS) systems. Experiments (long-term and batch-tests) as well as mathematical modelling were performed. Our experimental results demonstrate that SND is significantly limited during treatment of low-strength municipal wastewater with AGS systems (14-39%), while almost full SND is observed when treating synthetic influent containing only diffusible substrate (90%). Our simulations demonstrate that the main mechanisms behind limited SND are (1) the dynamics of anoxic zone formation inside the granule, (2) the diffusibility and availability of electron-donors in those zones and (3) the aeration mode. The development of anoxic zones is driven by the utilisation of oxygen in the upper layers of the granule leading to transport limitations of oxygen inside the granule; this effect is closely linked to granule size and wastewater composition. Development of anoxic zones during the aerobic phase is limited for small granules at constant aeration at bulk dissolved oxygen (DO) concentration of 2 mgO
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