从水解酸化处理的家用废水中优化用挥发性脂肪酸进行脱:使用固定式生物填充剂比较酸盐和酸盐的效果
1Key Laboratory of Beijing for Water Quality Science and Water Environmental Recovery Engineering, College of Architectural Engineering, Beijing University of Technology, Beijing, 100124, China.
Journal of environmental management
|March 5, 2025
概括
固定式生物填充器使用废水中的挥发性脂肪酸 (VFA) 实现了100%的脱效率. 这项研究分析了VFA消耗和基因表达,揭示了微生物适应能力的洞察力,以提高去除能力.
科学领域:
- 环境微生物学环境微生物学
- 废水处理工程 废水处理工程
- 生物地质化学循环是什么
背景情况:
- 从废水中去除气对于环境保护至关重要.
- 挥发性脂肪酸 (VFA) 是家用废水中容易获得的碳来源.
- 脱过程需要合适的电子捐赠者和接受者.
研究的目的:
- 用固定式生物填充剂和VFA评估脱化效率.
- 分析VFA消费模式和微生物社区的转变.
- 研究不同电子受体下代谢基因的表达.
主要方法:
- 固定式生物填充剂的培养和在脱化中的应用.
- 气相色谱测量VFA的消耗量.
- 定量PCR分析代谢基因表达.
- 16S rRNA基因测序用于微生物社区分析.
主要成果:
- 使用酸盐或酸盐作为电子接受器实现100%的脱效率.
- 观察到的VFA消耗差异:酸和酸与酸盐;酸和酸与酸盐.
- 脱基因的升级,特别是nosZ,这表明减少了N2O排放.
- 观察到微生物群落的转变,主导地位从Thauera转变为Thiobacillus.
结论:
- 固定式生物填充器有效地利用VFA进行完整的脱.
- 电子受体类型影响VFA利用和微生物社区结构.
- 该研究提供了优化去除和减少污泥生产的见解.
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