操作参数和温度影响的污泥微生物代谢:一个综合的视角,考虑细胞外聚合物质,可溶微生物产品,生物质量量和社区转移
Xiaoliang Li1, Weiqi Luo1, Xinyu Yang1
1State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, Xi'an 710048, China.
Enzyme and microbial technology
|August 23, 2024
概括
固体保留时间 (SRT),液压保留时间 (HRT) 和温度等操作因素在污水处理中显著影响废水溶性微生物产品 (SMP) 和细胞外聚合物物质 (EPS),影响污泥社区动态和处理效率.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 废水溶解微生物产品 (SMP) 和细胞外聚合物物质 (EPS) 是废水处理中复杂的有机化合物,挑战先进的工艺.
- 了解SMP和EPS的生产,转化和分解至关重要,但由于它们的异质性和多因素影响而受到阻碍.
研究的目的:
- 调查固体保留时间 (SRT),液压保留时间 (HRT) 和温度对废水中SMP度的影响.
- 在不同的操作条件下分析EPS,污泥生物质和微生物群体结构的共同变异.
主要方法:
- 在活性污泥系统中实验性操纵SRT,HRT和温度.
- 废水中SMP和EPS成分的分析.
- 污泥生物质和微生物群落结构的评估 (例如,使用16S rRNA测序).
主要成果:
- 较长的SRT增加了生物质和特定的微生物群体,可能阻碍了EPS到SMP的营业额,导致EPS积累和最初较低的SMP.
- 较长和较短的HRT都增加了SMP度,较短的HRT几乎翻了一番,特别影响了蛋白质和多糖含量.
- 较低的温度提高了SMP度和蛋白质细菌的丰富性,同时减少了光EPS成分,突出了它们在SMP生产和转化中的作用.
结论:
- 污泥社区结构在EPS和SMP之间的动态中起着至关重要的作用.
- 操作参数 (SRT,HRT,温度) 显著影响污泥-EPS-SMP相互作用.
- 这些发现可以帮助开发更好的模型和优化活性污泥系统运行,以改善废水处理.
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