优化酸盐剂量策略用于硫化物控制,使用动力建模,基于变异的灵敏度分析和实验室规模的下水道反应器.
Ahmed Khalil1, Bassem Haroun2, Domenico Santoro3
1Department of Mechanical and Materials Engineering, Western University, London, Ontario, Canada.
概括
在下水道系统中优化酸盐剂量可以显著减少有害的硫化物产量. 第三个反应堆的战略剂量实现了最佳的硫化物去除,降低了成本和环境影响.
科学领域:
- 环境工程 环境工程
- 环境微生物学 环境微生物学
- 水质管理水质管理
背景情况:
- 在下水道中生产硫化物和甲会引起臭味,腐蚀和温室气体排放.
- 有效的缓解策略对于运营效率和环境保护至关重要.
研究的目的:
- 优化酸盐剂量策略,以减轻下水道系统中硫化物产生.
- 评估剂量位置和剂量对硫化物和甲动态的影响.
主要方法:
- 开发了基于WATS模型的扩展动力学模型,以模拟下水道微生物过程.
- 使用实验室规模下水道反应堆的实验数据对模型进行校准和验证.
- 进行灵敏度分析以确定影响模型预测的关键参数.
主要成果:
- 酸盐剂量的位置和剂量显著影响硫化物去除和残留酸盐水平.
- 最优的策略包括在第三反应堆中以14.5 mgNO3-N/L的剂量给酸盐.
- 达到硫化物度低于0.5 mgS/L,废水中酸盐0.9 mgNO3-N/L,成本降低42%.
结论:
- 该研究为优化下水道网络中酸盐剂量的量化提供了定量基础.
- 战略性酸盐剂量可以有效控制硫化物生产,同时最大限度地降低成本和环境影响.
- 数学建模是理解和优化废水处理过程的宝贵工具.
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