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叶片在以有氧颗粒污泥为基础的全面有氧颗粒污泥中化中的关键作用 WWTP

Livia Britschgi¹, Stephany Wei¹, Andreas Proesl²

¹Eawag: Swiss Federal Institute of Aquatic Science and Technology, Überlandstrasse 133, 8600, Dübendorf, Switzerland.

|January 17, 2025

概括

有氧颗粒污泥 (AGS) 系统是混合的,花在化中发挥着关键作用. 优化固体保留时间 (SRT) 对于花对于废水处理厂的有效除至关重要.

科学领域:

环境微生物学环境微生物学
废水工程废水工程
生物技术是生物技术.

背景情况:

有氧颗粒污泥 (AGS) 通常被视为只有颗粒的系统,但在实践中,和颗粒并存.
了解这些聚合物在化中的不同作用对于优化废水处理至关重要.

研究的目的:

调查各种尺寸的花和颗粒在基于AGS的全尺寸测序批量反应堆 (SBR) 中对化的贡献.
分析14个月的不同聚合物大小中化社区和活动的分布.

主要方法:

在14个月的时间内,在基于AGS的SBR中监测大小分布 (TSS) 和化社区/活动.
量化小聚合物 (<1毫米) 和大颗粒 (>2毫米) 的特定活动.

主要成果:

AGS系统是混合的,花 (<0.25毫米) 显著促进化 (温暖季节高于50%).
小颗粒 (<1毫米) 的特定化活性比大颗粒 (>2毫米) 高5-15倍.
由于SRT不匹配,的占主导地位导致酸盐氧化细菌 (NOB) 损失 (79%) 和在寒冷季节的废水中酸盐的增加.

结论:

AGS作为一种混合系统,在这种系统中,花对于化至关重要,特别是在更温暖的时期.
对于混合AGS系统,建议全年控制固体保留时间 (SRT) 低于NOB的最低SRT,以确保有效的除.

关键词:

有氧颗粒污泥的有氧颗粒污泥叶片叶片叶片叶片叶片化活动分布的分布亚化社区的分配.尺寸分布尺寸分布

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