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评估聚酸盐积聚生物体在全面侧流增强生物去除系统中的性能

Khashayar Aghilinasrollahabadi¹, Shahrzad Saffari Ghandehari¹, Birthe Veno Kjellerup¹

¹Department of Civil and Environmental Engineering, University of Maryland, College Park, Maryland, USA.

Water environment research : a research publication of the Water Environment Federation

|January 11, 2024

概括

侧流增强生物去除 (S2EBPR) 改善了废水处理中的去除. 较高的温度增加了碳需求和竞争,影响了效率,但S2EBPRPR

科学领域:

环境工程环境工程
水处理技术水处理技术
微生物学微生物学

背景情况:

的去除对于防止高缩至关重要.
侧向增强生物去除 (S2EBPR) 通过优化聚酸盐积聚生物体 (PAO) 的碳可用性来增强去除.

研究的目的:

评估一个全面的S2EBPR系统的性能和经济可行性.
调查温度对碳消耗和PAO活动的影响.

主要方法:

在水资源回收设施 (WRRF) 中对一个全面的S2EBPR系统进行了为期5个月的监测.
批量实验用于评估温度对碳消耗和释放/吸收比率的影响.
微生物社区分析以将PAO丰度与活性相关联.
经济可行性评估将S2EBPR与传统方法进行比较.

主要成果:

在温度和碳消耗率 (r=0.91) 之间观察到强烈的正相关性 (14-18°C).
随着温度的增加,释放到COD吸收率的比例显著下降,这表明碳竞争加剧.
在PAO丰富度和活性之间没有发现强烈的相关性.
与化学沉和传统EBPR相比,S2EBPR的更高的资本成本在5至11年内被运营收益所抵消.

结论:

温度显著影响S2EBPR动力学,增加了碳需求和竞争.
S2EBPR为除提供了一种具有成本效益的解决方案,其运营效益证明了初始投资的合理性.
这项研究为升级传统除系统到S2EBPR.提供了有价值的见解.

关键词:

经济可行性经济可行性营养物质的恢复营养物质的恢复酸是一种.聚酸盐积累生物 (PAO) 的存在.在S2EBPR中,它是S2EBPR.这是一个WRRF.废水是废水,废水就是废水.

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