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纳米二氧化合碳源预加载颗粒活性碳生物过器增强生物膜形成和污染物去除

Wen Qin¹, Qiurong Xiao¹, Miaoqing Hong¹

¹School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, China.

Environmental research

|November 11, 2023

概括

用纳米二氧化和碳来源预加载颗粒状活性炭,通过加速生物膜形成,显著增强了氨去除. 这种方法促进了微生物活动和生物质,从而提高了废水处理效率.

科学领域:

环境科学环境科学
水处理工程水处理工程
微生物学微生物学

背景情况:

稳定的生物膜形成对于使用生物活性炭 (BAC) 进行有效的氨去除至关重要.
在实现最佳生物膜成熟度和传统BAC的氨去除效率方面存在挑战.

研究的目的:

研究用碳来源和纳米二氧化 (nMnO2) 预加载颗粒活性炭 (GAC) 对氨去除的影响.
评估基质预加载对生物膜形成,生物质和微生物群落结构的影响.

主要方法:

GAC预先装载了碳来源 (葡萄糖,糖糖) 和nMnO2.2.
使用预加载和未加载的BAC测试了氨去除效率.
分析了生物质,细胞外聚合物生产和微生物社区组成.

主要成果:

nMnO2与含糖的BAC相结合,实现了49.1%的氨去除,比不含糖的BAC高出1.7倍.
负载BAC上的生物质比不负载BAC高4.6-9.5倍.
确定了占主导地位的细菌 (Flavobacterium,Burkholderiaceae,Aquabacterium),支持了化/脱化.

结论:

用nMnO2和/或碳来源预加载GAC加速了生物膜的形成,并增强了氨的去除.
微生物降解在氨去除中起着重要作用,与生物膜和GAC吸附一起.
这种方法为改善生物废水处理提供了一个有希望的策略.

关键词:

氨的去除氨的去除生物活性炭生物活性炭殖民化微生物的微生物细胞外的聚合物.

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