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有氧颗粒污泥的稳定性,用于处理具有不同负载率的无机废水

Mingjing Zeng¹, Zhenghao Li¹, Yuanyuan Cheng¹

¹School of Civil and Surveying & Mapping Engineering, Jiangxi University of Science and Technology, Ganzhou, People's Republic of China.

Environmental technology

|July 20, 2023

概括

最佳的负载率 (0.81.2 kg/m3·d) 促进有氧颗粒污泥 (AGS) 的稳定性,用于处理稀土废水. 这种平衡支持化和非化细菌,这对于有效的废水处理至关重要.

科学领域:

环境科学环境科学
环境工程环境工程
微生物学微生物学

背景情况:

离子稀土矿废水由于高氨和低有机含量而带来挑战.
有氧颗粒污泥 (AGS) 是处理这些废水的潜在解决方案,但其在不同条件下的稳定性至关重要.

研究的目的:

调查不同载率 (NLR) 对AGS稳定性和性能的影响.
确定最佳的NLR,以保持AGS结构和处理模拟离子稀土矿山废水的效率.

主要方法:

使用成熟的AGS,五个测序批量反应堆 (SBR) 用不同的NLR (0.21.6 kg/m3·d) 运行.
在30天后,分析了颗粒性质,去除效率和细菌群体组成.

主要成果:

颗粒结构完整性和稳定性在0.8和1.2kg/m3·d (R3和R4) 的NLR中是最高的.
在NLR为0.21.2 kg/m3·d的反应堆中,氨的去除超过了90%,而无机的总去除仍在30%左右.
在稳定颗粒 (R3和R4) 中观察到主导的化 (*Nitrosomonas*) 和脱 (*Thauera*) 细菌的相对丰度较高.

结论:

在0.8至1.2kg/m3·d之间的NLR为化/脱化细菌的生长和新陈代谢建立了有利的平衡.
这些NLR对于保持AGS在处理离子稀土矿山废水中的稳定性至关重要.
这些发现为优化AGS流程在具有挑战性的工业废水处理场景中提供了技术支持.

关键词:

有氧颗粒污泥的有氧颗粒污泥内源性脱化是一种内源性脱化.无机废水无机废水是一种无机废水.负载率是指负载率.稳定的稳定性稳定的稳定性

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