将机器学习算法与下水道过程模型集成,实现快速预测和实时控制下水道系统中的H2S污染
Zhensheng Liang1,2, Wenlang Xie1,2, Hao Li1,2
1School of Environmental Science & Engineering, Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology, Sun Yat-sen University, Guangzhou, 510275, China.
Water research X
|December 13, 2024
概括
一个新的快速预测模型 (SPM) 将下水道过程建模与机器学习相结合,用于快速检测硫化 (H2S). 这种方法可以实现实时控制,提高安全性并减少下水道系统中化学品的使用.
科学领域:
- 环境工程 环境工程
- 废水管理 废水管理
- 计算流体动力学的流体动力学.
背景情况:
- 由于复杂的产生因素,下水道系统面临有毒硫化 (H2S) 的安全风险.
- 现有的动态下水道工艺模型在计算负担上扎,阻碍了及时的H2S风险控制.
- 准确的H2S预测和实时管理对于公共卫生和基础设施完整性至关重要.
研究的目的:
- 开发一个快速预测模型 (SPM) 来准确和快速预测下水道网络中溶解硫化物 (DS) 和H2S度.
- 加强对H2S暴露风险的实时控制策略,克服传统方法的局限性.
- 将动态下水道过程模型与机器学习算法集成,以改进H2S管理.
主要方法:
- 结合了经过验证的生物膜启动的下水道过程模型 (BISM) 与高速机器学习算法 (MLA).
- 使用基于梯度提升决策树的SPM来预测DS和H2S度.
- 实施了实时动态剂量计划,由SPM为H2S控制提供便利.
主要成果:
- SPM准确地预测了DS (1.95 mg S/L) 和H2S (214 ppm),与现场测量 (1.82 mg S/L和219 ppm) 密切匹配.
- SPM实现了小于0.3秒的计算时间,比BISM (>5000秒) 显著改善.
- 动态剂量方案使H2S控制完成率从69%提高到100%,并减少了化学剂量.
结论:
- 将动态下水道过程模型与MLA集成,有效地解决了机器学习培训的数据限制.
- 拟议的SPM能够快速预测复杂的下水道网络中H2S的产生和排放.
- 这种方法可以实现对H2S的实时,有效和经济的控制,提高了下水道系统的安全性.
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