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使用化酶分泌热友细菌群体的化过剩的污泥泥的研究

Baoyan Chi¹, Ying Huang¹, Zhenfeng Xiong¹

¹Solid Waste Treatment and Resource Recycle Research Laboratory, Department of Environmental Science and Technology, School of Energy and Environment, Southeast University, Nanjing, 210096, PR China; Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing, 210096, PR China.

Journal of environmental management

|November 12, 2023

概括

热友细菌群落 (LTBC) 通过溶解多余的污泥,有效地减少废水污泥. 这个在75°C时优化的过程破坏细胞壁,并溶解关键组件,有助于减少废水处理中的污泥.

科学领域:

环境微生物学环境微生物学
水处理工程水处理工程
生物技术是生物技术.

背景情况:

减少泥是生物废水处理的一个重大挑战.
将过剩的污泥泥溶解与活性污泥工艺相结合,可以在现场进行减少.
热友细菌群落 (LTBC) 提出了一种新的污泥溶解方法.

研究的目的:

为了研究过量的污泥泥溶解,使用在不同温度 (55-75°C) 中化的热友细菌群体.
为了阐明由LTBC介导的污泥溶解的机制.
分析污泥溶酸盐的演变及其 humification 特性.

主要方法:

在不同温度下,热友细菌群体的化.
污泥溶酸盐的组成和特性分析.
用于微生物社区分析的安普利康测序.
福利埃变换红外光谱学和激发发射矩阵光谱学用于化分析.

主要成果:

适应75°C的有氧热友细菌群体表现出最高的污泥溶解效率.
在2小时内,挥发性悬浮固体的去除率达到53.9%.
蛋白质 (97.0%) 和多糖 (96.0%) 发生了显著的溶解,细菌细胞壁被破坏.
观察到化,酸在55-65°C和酸在75°C时积聚.
在75°C的细菌群体中,Thermus和Thermaerobacter占主导地位,它们具有用于蛋白质,碳水化合物和糖的解的酶系统.

结论:

特别是在75°C的温度下,LTBC技术对废水处理中的过剩污泥减少非常有效.
该过程涉及污泥组件的重大破坏和湿化.
鉴定到的酶系统为LTBC疗效提供了机械的理解.
这项研究为在常规废水活性污泥工艺中应用LTBC提供了理论基础.

关键词:

过量的污泥泥溶解.激发发射矩阵光谱学激发发射矩阵光谱学减少污泥的使用热友细菌社区热友细菌社区

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