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盐度对糖醇转化和通过有氧颗粒污泥去除生物的影响

Ali Elahinik¹, Fleur de Clercq¹, Martin Pabst¹

¹Department of Biotechnology, Delft University of Technology, van der Maasweg 9 2629HZ, Delft, The Netherlands.

|May 9, 2024

概括

工业废水中的高盐度可能会影响有氧颗粒污泥 (AGS) 过程. 稳定的颗粒和增强的生物去除 (EBPR) 发生在20g/L NaCl,但更高的水平破坏了微生物群落和营养去除.

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:

工业废水经常含有来自海水或化 (NaCl) 使用的高盐度.
有氧颗粒污泥 (AGS) 工艺对于废水处理至关重要,包括增强生物除法 (EBPR).
以前的研究表明,海水与盐水在类似的透强度下对AGS产生不同的影响.

研究的目的:

研究NaCl度和海水对AGS颗粒和转化过程的详细影响.
评估盐度对无氧转化,酸盐去除和微生物社区动态的影响,使用甘作为碳源.
在不同的盐度条件下比较EBPR和AGS系统的运行稳定性.

主要方法:

使用不同NaCl度和海水的AGS反应堆进行了长期实验.
甘油被用作碳源来模拟工业废水条件.
分析包括颗粒化,无氧和有氧转化,酸盐去除,微生物群落概况 (包括蛋白质组分析) 和评估度调节反应.

主要成果:

稳定的颗粒和EBPR达到了20g/L的NaCl和海水.
在30g/L NaCl (海水强度) 时,观察到糖的吸收不完全,酸盐的去除减少,度增加和丝状颗粒的形成.
这是因为. 除了30g/L NaCl,Accumulibacter占主导地位,其丰富度下降,Zoogloea增加;Tessaracoccus和Micropruina在无氧糖醇转化方面始终存在.

结论:

盐度显著影响AGS颗粒化,营养除去和微生物群体结构,在30g/L NaCl时观察到有害影响.
对于EBPR和AGS系统的运行稳定性而言,离子比率似乎比绝对盐度更为关键.
细胞透调节,涉及三和释放,是盐适应生物质中对透应激的关键反应.

关键词:

有氧颗粒污泥的有氧颗粒污泥这是EBPREBPREBPREBPREBPR 糖是一种糖.甲型蛋白质组学是什么意思盐分盐分盐分盐分盐分这种树脂含有三糖.

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