Pilot Study on Low Temperature Stability of Aerobic Granular Sludge

Journal Article (2022)
Author(s)

Mark C.M. van Loosdrecht (TU Delft - Applied Sciences)

Xiaodi Hao (Beijing University of Civil Engineering and Architecture)

Yuanyuan Wu (Beijing University of Civil Engineering and Architecture)

Research Group
BT/Environmental Biotechnology
DOI related publication
https://doi.org/10.19853/j.zgjsps.1000-4602.2022.11.010 Final published version
More Info
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Publication Year
2022
Language
Chinese (Traditional)
Research Group
BT/Environmental Biotechnology
Issue number
11
Volume number
38
Article number
10. 19853/j. zgjsps. 1000-4602. 2022. 11. 010
Pages (from-to)
56-61
Downloads counter
201
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Abstract

摘要: 好氧颗粒污泥技术具有占地面积小、能耗低、剩余污泥量少、抗冲击性强等优点,是
一种可持续的污水处理技术。以北京某污水处理厂实际生活污水作为基质,在中试规模(有效容积
为2.5 m3)反应器中进行好氧颗粒污泥培养,研究了颗粒污泥在低温条件下的稳定性。中试自夏季
开始运行到次年春季结束,共计运行260 d。结果表明,采用我国实际低碳源市政污水可以培养出好
氧颗粒污泥,污泥颗粒化程度可达94%,SVI5/SVI30为1.1 ~ 1.3。冬季低温会造成颗粒污泥的枝状结
构增多、丝状菌生长,进而引起颗粒化比例略有下降,为80%~91%,污泥平均粒径降低,SVI5/SVI30升
高至1.5 ~ 1.8。在冬季低温条件下,通过优化调控进水流量、曝气时长、曝气过程DO浓度可提高脱
氮效率。中试期间各阶段反应器出水COD、TP、NH4+-N以及TN均可以满足GB 18918—2002的一级
A排放标准,但是低温条件下TN去除率略有下降(降幅为6%~9%),存在一定超标风险

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