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在不同硫化物和硫酸盐应力下,通过不同的注射源进行硫化物驱动的自性脱的性能和微生物机制

Lijuan Feng¹, Xiaoran Sun¹, Junqiang Wang¹

¹Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control, Zhejiang Ocean University, Zhoushan 316022, People's Republic of China; College of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan 316022, People's Republic of China.

Bioresource technology

|September 6, 2024

概括

在盐度应激下,潮间沉积物在硫化物自脱 (SAD) 中的活性污泥的性能优于活性污泥. 这项研究通过确定硫化物和硫酸盐去除的最佳条件和微生物弹性来提高SAD过程的可靠性.

科学领域:

环境微生物学环境微生物学
水处理技术水处理技术
生物地质化学循环的过程

背景情况:

硫化物自性脱 (SAD) 对于从废水中去除和硫化物至关重要.
硫化物 (S^2-) 和硫酸盐 (SO₄^2-) 的盐度压力可以阻碍SAD过程的效率.
在不同的盐度条件下优化SAD需要了解微生物社区的动态.

研究的目的:

为了比较SAD的性能和微生物机制,使用活性污泥 (AS) 和潮间沉积物 (IS) 接种.
评估硫化物和硫酸盐盐度对生物膜发育和脱化的影响.
识别关键的微生物参与者及其在具有挑战性的环境条件下的弹性.

主要方法:

使用不同的注射剂 (AS与IS) 对生物膜性能进行比较分析.
通过分子技术量化脱和硫化物氧化基因.
在不同度的S2-和Na2SO4下评估SAD过程效率.

主要成果:

与活性污泥 (AS) 相比,潮间沉积物 (IS) 生物膜显示出更多的脱和硫化物氧化基因.
最佳的脱发生在100 mg/L S2-和5-15 g/L Na2SO4下,在IS生物膜中观察到性高达200 mg/L S2-和30 g/L Na2SO4下.
关键的属性Thiobacillus在高盐度下壮成长,但受到高硫化物水平的抑制.

结论:

潮间沉积物是开发强大的SAD生物膜的优越注射剂,能够承受硫化物和盐度压力.
该研究提供了对微生物适应策略的见解,以提高复杂废水矩阵中SAD过程的可靠性.
这些发现支持SAD工艺在高硫化物和盐度环境中的实际应用.

关键词:

脱的细菌可以使其脱.盐水废水是盐水的废水.硫酸盐是一种硫酸盐.硫化物自性脱化硫氧化细菌是一种氧化硫的细菌.

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