在短期停滞期间,无触摸传感器龙头中的温度依赖的微生物动态
Anran Ren1,2,3, Zihan Dai4, Xiaoming Li2,3
1Jiangsu Key Laboratory of Industrial Pollution Control and Resource Reuse, School of Environmental Engineering, Xuzhou University of Technology, Xuzhou, 221018, China.
Environmental science and ecotechnology
|October 13, 2025
概括
无触摸水龙头的短期停滞会增加有害细菌,比如莱吉欧内拉肺炎菌. 在2至4小时内冲洗水龙头对于安全饮用水至关重要,特别是在更高的温度下.
科学领域:
- 环境微生物学环境微生物学
- 公共卫生 公共卫生
- 建筑用水系统的建设
背景情况:
- 管道中的微生物污染对健康构成风险.
- 不接触式水龙头的短期停滞不前是很难理解的.
- 龙头的设计会影响微生物的再生.
研究的目的:
- 在短期停滞期间调查无触摸水龙头的微生物水质变化.
- 确定温度对微生物再生和特定病原体的影响.
- 为无触摸水龙头建立安全停滞期.
主要方法:
- 模拟不同温度 (10,30,40°C) 的短期停滞 (0.25-10小时).
- 监测微生物多样性,莱吉欧内拉肺炎菌度和腺三酸盐 (ATP) 作为生物质指标.
- 分析了衰变和生物膜的贡献.
主要成果:
- 微生物多样性下降,而L. pneumophila在停滞 2-4 小时之间显著增加.
- 30°C最大限度地增加了微生物生物质,但减少了L. pneumophila,而40°C减少了生物质,但促进了L. pneumophila的生长.
- 加快的衰变和生物膜影响了微生物的变化.
结论:
- 无触摸水龙头的温度依赖的安全停滞期为2-4小时.
- 冲洗是必要的 2-4 小时后,以减轻健康风险.
- 优化水龙头温度 (30-40°C) 可以平衡安全性,舒适性和能源效率.
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