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使用数字显微镜追踪活性污泥的形态特征,以及它们对污泥脱水和沉的影响

Yuki Nakaya¹, Jinming Jia¹, Hisashi Satoh¹

¹Division of Environmental Engineering, Faculty of Engineering, Hokkaido University, Sapporo, Japan.

Environmental technology

|July 21, 2023

概括

活性污泥 (AS) 流体

科学领域:

环境科学环境科学
化学工程是化学工程的重要组成部分.
微生物学微生物学

背景情况:

活性污泥 (AS) 的沉降性和脱水性对于水质和污泥管理成本至关重要.
量化花形态传统上需要劳动密集型方法,增加成本.
细胞外聚合物质 (EPS) 在AS特性中发挥作用.

研究的目的:

开发一种快速且具有成本效益的方法来量化AS群体形态.
调查AS形态,EPS和脱水/沉降特性之间的相关性.
确定可预测AS性能的关键形态参数.

主要方法:

将数字显微镜与自动阶段相结合,以捕获每样本超过100个放大AS流体图像.
使用分析软件计算各种形状参数.
在一年内监测了四个废水处理厂,分析了形态参数,EPS,过时间 (TTF) 和污泥体积指数 (SVI).

主要成果:

更大,更密集,更光滑的花与更好的脱水能力和不同植物中的沉积相关.
形态与EPS的数量和质量有关.
相当的高密度流体直径和MLSS与总流体面积的比率成为AS脱水能力和沉积能力的关键预测指标.

结论:

自动化数字显微镜为AS的特征提供了一种高效的方法.
形态是影响活性污泥沉性和脱水性的重要因素.
特定的形态参数可以预测AS性能,有助于过程优化.

关键词:

活性污泥活动污泥细胞外聚合物质是细胞外聚合物质.显微镜图像显微镜图像污泥体积指数污泥体积指数过时间到过时间.

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