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微气泡通风对污染物去除和节能工艺的影响,在花颗粒污泥共存系统中

Minghui Liu¹, Ju Wang², Zhaoxu Peng³

¹School of Water Conservancy and Transportation, Zhengzhou University, Kexue Road 100, Zhengzhou 450001, China

Water science and technology : a journal of the International Association on Water Pollution Research

|December 14, 2023

概括

这项研究在使用微气泡通风的测序批量空运反应堆 (SBAR) 中开发了一种节能的花颗粒系统. 该系统实现了出色的污染物去除,并将通风能耗降低了14.4%.

科学领域:

环境工程环境工程
废水处理技术废水处理技术
微生物生态学微生物生态学

背景情况:

污水处理厂消耗大量能源,主要用于通风.
开发节能通风方法对于可持续的废水管理至关重要.
序列批量空运反应堆 (SBAR) 提供了高效废水处理的潜力.

研究的目的:

通过在SBAR中建立花颗粒共存系统来研究废水处理中的节能方法.
通过微泡通风来降低通风能耗.
与传统的基于的系统相比,评估颗粒系统的性能.

主要方法:

在SBAR中使用微泡通风建立了花颗粒共存系统.
在各种空气强度下分析了颗粒形成和污染物去除.
将系统的性能与传统的基于的粗泡气化系统进行了比较.
评估了节能潜力和微生物群落组成.

主要成果:

颗粒效率随着通风强度的增加而增加,优化了细胞外聚合物质 (EPS) 的分泌.
带有微空气的SBAR (30mL·min-1) 实现了最高的颗粒效率 (52.6%).
与基于花的系统相比,花颗粒系统显示出对NH4+-N (100.0%),TN (77.0%) 和TP (89.5%) 的更高的去除效率.
该系统丰富了关键的去除营养的微生物物种,包括Nitrosomonas,Nitrospira,Azoarcus,Thauera和Paracoccus.

结论:

在SBAR中的微空气流-颗粒共存系统对于废水处理节能是有效的.
该系统可显著降低14.4%的通风能耗,同时提高废水质量.
在花颗粒系统中增强的微生物群体有助于提高营养物质去除效率.

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