将物理选择与生物选择结合起来,以启动试点规模,连续流量,有氧颗粒污泥反应堆,而无需处理中断
Zhaohui An1, Jiefu Wang1, Xueyao Zhang1
1Department of Biological Systems Engineering, Virginia Tech, 1230 Washington St. SW, Blacksburg, VA 24061, USA.
Water research X
|June 19, 2023
概括
本研究提出了一种新方法,将废水处理厂转换为有氧颗粒污泥 (AGS) 系统. 通过优化澄清器运行,它可以防止污泥冲洗,并在启动过程中保持废水质量.
科学领域:
- 环境工程 环境工程
- 废水处理技术 废水处理技术
- 微生物生态学 微生物生态学
背景情况:
- 传统的活性污泥系统在过渡到连续流动,有氧颗粒污泥 (AGS) 设施时面临挑战.
- 关键的挑战包括由于花污泥冲洗而失去处理能力,以及在AGS反应堆启动期间潜在的化故障.
- 目前对AGS的物理选择器设计有限,通常需要复杂的测序批量反应堆或侧流旋.
研究的目的:
- 为了克服技术限制,全面的活性污泥基础设施向连续流动,有氧颗粒污泥 (AGS) 设施过渡.
- 提出一种新的,经济的方法,在现有处理列车内实施连续流动AGS.
- 在AGS反应堆启动期间保护废水质量.
主要方法:
- 利用真实的废水数据来评估运营调整.
- 作为物理选择器,将上游澄清器的表面溢出率 (SOR) 提高到10 m/h.
- 将物理选择器下流和溢流污泥重定向到处理列车内的特定区域.
主要成果:
- 优化的上游澄清器有效地从AGS中分离了花性污泥.
- 拟议的污泥重定向战略促进了AGS的形成.
- 在整个AGS反应堆启动期间,废水质量得到维持,减轻了化损失.
结论:
- 在高SOR下运行的上流澄清器可以作为AGS系统的有效物理选择器.
- 这种方法为升级现有废水处理厂以连续流AGS提供了一种可行和经济的方法.
- 这项研究展示了用于无集成AGS技术的实际解决方案,提高了处理效率和稳定性.
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