适应季节性温度变化:硫自无化生物反应器的动态多子单元战略
Yi-Lu Sun1, Han-Lin Wang1, Huu Hao Ngo2
1Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, PR China.
Environmental research
|October 27, 2023
概括
基本硫自化脱 (S0AD) 生物反应器现在可以全年可靠地去除. 一个新的设计和操作策略稳定了性能,尽管温度变化,降低成本和提高效率.
科学领域:
- 环境工程 环境工程
- 生物技术是生物技术.
- 水处理 处理水的方法
背景情况:
- 元素硫自脱 (S0AD) 过程对温度变化非常敏感.
- 季节性温度波动对S0AD生物反应堆的一致性性能构成重大挑战.
- 需要有效的管理策略,以确保在S0AD系统中可靠地去除.
研究的目的:
- 开发一个全面的设计和操作S0AD生物反应堆的方法,以考虑季节性温度变化.
- 创建一个基于温度和酸盐负载的S0AD效率的预测数学模型.
- 优化生物反应器的设计和运行,以提高可靠性和成本效益.
主要方法:
- 将酸盐去除率与模拟温度和酸盐负载相关联,以开发一个预测性的数学模型.
- 将溶解氧和硫消耗等因素纳入准确的生物反应器设计模型.
- 在试点规模的S0AD生物反应堆中实施多个子单位的操作策略.
主要成果:
- 建立了一个数学模型来预测S0AD效率,确定了关键相关系数 (k1=5.42×10-4,k2=-0.41,k3=0.04,A=0.13).
- 一个采用该模型设计的试点级生物反应器全年保持了废水中酸盐度稳定低于8mg-N/L.
- 多个子单位的运行策略使过度的酸盐去除,硫消耗和硫酸盐生产减少了76.8%.
结论:
- 开发的方法提供了在可变温度条件下设计和运行S0AD生物反应堆的有效策略.
- 优化的方法提高了S0AD技术的可靠性和成本效益,用于实际的废水处理应用.
- 这项研究为克服S0AD过程的温度灵敏度限制提供了一条途径.
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