在小型饮用水库中基于液压调节的MIB衍生的气味管理:原则和应用
Jinping Lu1, Ming Su1, Yuliang Su2
1State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Water research
|August 23, 2023
概括
控制饮用水中味的气味需要控制蓝藻细菌. 将液压保留时间 (HRT) 缩短到不到10天,有效地将2-甲基异构 (MIB) 产量降至最低,并解决MIB事件.
科学领域:
- 环境科学 环境科学
- 水质管理水质管理
- 微生物学 微生物学
背景情况:
- 饮用水中的味气味,由2-甲基异玻醇 (MIB) 引起,是一个重大挑战.
- MIB是由蓝藻细菌产生的,特别是 Planktothricoides raciborskii,通常在源水库中发现.
研究的目的:
- 提出和验证一种方法来控制小水库中产生MIB的蓝藻细菌的生长.
- 建立液压保留时间 (HRT) 作为MIB缓解的关键监管参数.
主要方法:
- 进行了长期的实地调查和实验室培养实验.
- 开发并验证了液压保留时间 (HRT) 调节模型.
- 评估了14种蓝藻细菌的关键HRT值.
主要成果:
- 较长的HRT被确定为MIB发作的触发因素.
- 将HRT降低到不到10天显著降低了Planktothricoides raciborskii密度和MIB水平 (R2=0.94).
- 通过将HRT减少到5.4±0.8天,低于临界值,成功终止了MIB事件.
结论:
- 基于HRT的监管是控制小水库中MIB事件的有效和可行的策略.
- 这种方法为操作变化提供了科学基础,避免了基础设施成本和水质负面影响.
- HRT法规对管理其他与蓝菌相关的水质问题显示出希望.
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