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- W3109490799 abstract "Abstract BACKGROUND Three lab‐scale sequencing batch reactors were used to investigate the effects of Fe 3+ on aerobic granular sludge (AGS) formation, nutrient removal, and microbial community. RESULTS The addition of 6 and 12 mg Fe 3+ L −1 could not shorten the granulation time. However, compared to the reactor without Fe 3+ addition (average sludge volume index at 30 min (SVI 30 ) 70.8 mL g −1 ; stable average particle size 548 μm), the addition of 12 mg Fe 3+ L −1 helped improve the physical properties of AGS (average SVI 30 57.0 mL g −1 ; stable average particle size 1067 μm). Furthermore, with 12 mg Fe 3+ L −1 addition (Fe 3+ to PO 4 3− ‐P molar ratio = 1.33), effective removal of NH 4 + ‐N (≤0.5 mg L −1 ) and PO 4 3− ‐P (<1 mg L −1 ) was achieved. The addition of Fe 3+ reduced the microbial diversity and specific activity of heterotrophic bacteria, but promoted the growth of nitrite‐oxidizing bacteria. The growth of particle size not only increased the active biomass ratio and microbial diversity, but alleviated the inhibition effect of Fe 3+ on the specific heterotrophic bacteria activity. CONCLUSION The addition of Fe 3+ had both negative and positive effects on the formation and stability of AGS. The results will help enrich the understanding of AGS application in nutrient removal and especially that of phosphorus. © 2020 Society of Chemical Industry" @default.
- W3109490799 created "2020-12-07" @default.
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- W3109490799 date "2021-01-05" @default.
- W3109490799 modified "2023-09-23" @default.
- W3109490799 title "Influence of ferric iron dosing on aerobic granular sludge: granule formation, nutrient removal and microbial community" @default.
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- W3109490799 doi "https://doi.org/10.1002/jctb.6640" @default.
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