Repurposing hydrolysis acidification tank in municipal wastewater treatment plants for sludge reduction and biological nutrient removal

Jiang, Jie; Zhou, Zhen; Huang, Jing; Zhao, Xiaodan; Sun, Xiaoqian; Zheng, Yue; Yang, Aming; An, Ying; Wang, Zhiwei

doi:10.1016/j.cej.2020.125327

Cited by 20 publications

(1 citation statement)

References 47 publications

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“…Although hydrolysis -acidi cation is not temperature-sensitive, low temperatures affect the activity of the microorganisms, reducing the treatment effect (Lin et al, 2017;Hu et al, 2019). The larger the molecular weight and the more complex the molecular structure of the substrate, the lower the hydrolysis rate; this way, the type and form of the contaminants also affect the treatment effect (Dignac et al, 2000;Jiang et al, 2020). In this context, it is crucial to e ciently manage the hydrolytic acidi cation reaction conditions.…”

Section: Introductionmentioning

confidence: 99%

Optimizing the hydrolysis-acidification stage in municipal wastewater treatment: comparison of immobilized fillers and granular sludge

Liu

Yang

2023

Preprint

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The decomposition of organic macromolecules in sewage is currently greatly aided by hydrolysis-acidification. The full use of its qualities can help domestic sewage biodegrade more quickly, promoting the subsequent aerobic reactions. This study evaluated the hydrolysis-acidification performance of granular sludge and filler in residential sewage. Both forms had a high VFA production capacity at the beginning of the reaction, but the granular sludge gradually disintegrated over time, especially at low temperatures, which decreased its performance. High-throughput sequencing revealed that the filler included a greater quantity of hydrolytic-acidifying bacteria than the granular sludge, with a higher performance.

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