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通过注射磁石辅助菌根颗粒来快速,稳定和高效地开发耐盐的有氧颗粒污泥

Xushen Han¹, Rui Tang¹, Changshen Liu¹

¹State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China; National Engineering Research Center for Integrated Utilization of Salt Lake Resources, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China.

|July 26, 2023

概括

磁铁增强的菌颗粒 (MPs) 加快了耐盐有氧颗粒污泥 (SAGS) 的形成. 这种方法确保了稳定的SAGS发展,在高盐废水处理中,仅在8天内实现了高和碳去除.

科学领域:

环境科学环境科学
微生物学微生物学
生物技术是生物技术.

背景情况:

有氧颗粒污泥 (AGS) 的长期培养时间限制了其在过废水处理中的工业用途.
菌颗粒 (MPs) 可以增强污泥聚合和加快AGS形成,但可能导致碎片化.
加强MP对于在高度条件下稳定高效的AGS开发至关重要.

研究的目的:

调查使用磁铁辅助菌根颗粒 (MAMPS) 加快耐盐有氧颗粒污泥 (SAGS) 培养.
评估使用MAMPS在高盐度 (3%盐度) 条件下形成的SAGS的稳定性和效率.
确定Cladosporium tenuissimum真菌在SAGS形成中的作用.

主要方法:

使用耐受性真菌Cladosporium tenuissimum制备共培和吸附类型的磁铁辅助菌根颗粒 (CMMP和AMMP).
在3%盐度以下的SAGS种植中注射CMMP和AMMP.
监测SAGS特征 (颗粒大小,污泥体积指数) 和营养去除效率 (TOC,TN).
ITS rDNA测序以确定真菌在SAGS形成中的作用.

主要成果:

与传统的MP不同,CMMP和AMMP能够实现稳定的SAGS过渡,而不会发生碎片化.
在8天内实现了高效的同时和碳去除 (∼98% TOC,∼80% TN).
在55天的时间里,CMMP注射的颗粒保持了优良的特性 (D50>1300微米,D10>350微米,SVI30<45毫升/克).
证实Cladosporium tenuissimum在SAGS的发展中发挥着关键作用.

结论:

磁石辅助菌根颗粒,特别是CMMP,提供了一个快速,稳定和高效的方法来启动SAGS.
这种方法克服了与传统MPs相关的碎片化问题,提高了SAGS的可靠性.
这些发现支持CMMPs的工业应用,以实现高度废水的有效处理.

关键词:

有氧颗粒污泥的有氧颗粒污泥生物增强是一种生物增强.超的废水是超的废水.磁铁石是一种磁铁石.菌颗粒是一种菌颗粒.快速颗粒化的方法

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