移动床生物膜反应堆在低温下去除:挪威的经验
Bjorn Rusten1, Hallvard Ødegaard2
1Aquateam COWI AS, Karvesvingen 2, N-0579 Oslo, Norway
概括
移动床生物膜反应器 (MBBR) 有效地从冷废水中去除. 优化溶解氧和碳对的比率可以提高这些系统的低温性能.
科学领域:
- 环境工程 环境工程
- 废水处理技术 废水处理技术
- 生物反应器设计设计
背景情况:
- 冷和稀释的废水对传统的除过程构成重大挑战.
- 移动床生物膜反应器 (MBBR) 技术在具有挑战性的条件下证明了在去除的长期有效性,几家全规模的工厂已经成功运行了20多年.
研究的目的:
- 评估已建立的移动床生物膜反应器 (MBBR) 装置的低温性能,以去除.
- 确定在降低温度下运行的MBBR系统中优化去除效率的策略.
主要方法:
- 从各种条件下运行的全尺寸MBBR工厂的性能数据分析,重点是低温 (<5°C) 性能.
- 研究溶解氧度增加对化速率的影响.
- 评估调整的碳比对脱后速率的影响.
主要成果:
- 即使在低至5°C的温度下,MBBR工厂也表现出强的性能,对化和脱率的影响很小.
- 发现高水平的溶氧水平在低温下显著提高了化率.
- 控制碳比率的增加有效地提高了在寒冷条件下脱后的脱率.
结论:
- 在冷和稀释废水场景中,MBBR技术是消除的可靠解决方案.
- 优化操作参数,特别是溶解氧和碳比,可以减轻低温对去除效率的负面影响.
- 建议在脱前和脱后组合MBBR配置,以在低温环境中增强去除.
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