床浸泡比率变化作为一个有效的策略,以调节元素硫包装床反应堆的脱效率方向
Guijiao Zhang1, Hao-Ran Xu1, Wenwei Liao1
1State Key Laboratory of Urban Water Resources and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, China.
Water research
|December 13, 2024
概括
我们开发了一种新的方法,通过调整床浸泡比率 (BIR) 来控制硫堆 (SBR) 中的酸盐去除效率. 这种方法确保了稳定的酸盐废水,并减少了硫的消耗,提供了一个高效和经济的解决方案.
科学领域:
- 环境工程 环境工程
- 水处理技术水处理技术
- 生物反应器设计设计
背景情况:
- 使用硫包装床反应堆 (SBR) 的自化脱是市政废水处理的常见方法.
- 固定的硫量限制了适应酸盐水平波动的能力,导致废水问题和浪费.
- 需要在S0PBR.中对脱效率进行动态控制.
研究的目的:
- 提出和验证一种新的方法来调节酸盐去除效率 (NRE) 在S0PBR.
- 调查调整床浸沉比率 (BIR) 对NRE的影响.
- 开发一个动力模型,用于在不同的BIR下减少酸盐.
主要方法:
- 通过在S0PBR.中调整床浸泡比率 (BIR) 来实现一种新的方法.
- 与酸盐去除效率 (NRE) 和实际液压保留时间 (aHRT) 相关联的BIR调整.
- 开发并验证了一种整合暴露和浸泡参数的动力模型 (Rj=(Cin-01/2-Ce1/2) Q2.54AHt-0.65).
主要成果:
- 通过调整床浸泡比率 (BIR),有效控制了酸盐去除效率 (NRE).
- 在BIR为1.00时达到最大NRE,在BIR为0.00时观察到最低NRE.
- 确定了实际液压保留时间 (aHRT) 和BIR之间的强烈相关性.
- 开发的动力模型准确地描述了不同BIR下的酸盐还原动力学.
- BIR变化导致废水中酸盐水平更稳定,硫消耗减少 (7.8%31.6%).
结论:
- 调整床浸泡比率 (BIR) 提供了一种可行的策略,用于在S0PBR中动态控制酸盐去除效率.
- 开发的动力模型提供了一个预测工具,用于在波动的酸盐负载下优化S0PBR操作.
- 这种新的方法提高了处理稳定性,降低了运营成本,并最大限度地减少了硫废弃物.
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