了解anammox颗粒系统在潮湿/干燥天气中的运行情况
Wenqiang Wang1, Wenjuan Wang2, Zhu Li3
1Key Laboratory of Water Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China; Key Laboratory of Beijing on Regional Air Pollution Control, Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemical Engineering, Faculty of Environment and Life, Beijing University of Technology, Beijing 100124, China.
Bioresource technology
|February 7, 2024
概括
在潮湿的天气下,短的液压保留时间 (HRT) 通过增加机械强度和促进微生物活动来提高anammox颗粒系统的性能,尽管沉积率较低. 这样可以优化去除效率.
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:
- 安纳莫克斯颗粒系统对于废水处理至关重要.
- 了解潮湿和干燥天气中不同液压保留时间 (HRT) 的影响,对于优化性能至关重要.
- 泥的特性,微生物群落和代谢学是系统健康的关键指标.
研究的目的:
- 研究短HRT (潮湿天气) 与长HRT (干燥天气) 对anammox颗粒系统的影响.
- 评估HRT对污泥特性,微生物群落和代谢学的影响.
- 为anammox颗粒系统的工程应用提供理论指导.
主要方法:
- 在受控的加载率下研究了anammox颗粒系统.
- 多样化的液压保留时间 (HRT) 来模拟潮湿和干燥的天气条件.
- 分析了污泥特性 (密度,沉积,保留,机械强度),微生物群落和代谢学.
主要成果:
- 4.41小时的HRT产生了最高的总去除效率 (78.9%),负载率为0.4公斤N/m3·d).
- 较短的HRT减少了颗粒密度,沉性能和生物质保留,但增加了机械强度.
- 代谢学发现,更短的HRT刺激了氨基酸和甘氨酸脂代谢途径,增强了无氧氧化细菌的活性.
结论:
- 优化HRT,特别是在潮湿的天气中更短的持续时间,可以提高anammox颗粒系统的效率和稳定性.
- 增加颗粒透性和刺激微生物新陈代谢有助于改善去除.
- 这项研究为基于anammox的废水处理系统的实际应用和设计提供了宝贵的见解.
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