通过独特配置的空运内部循环隔断生物反应器实现部分化/anammox过程的快速颗粒化和长期稳定性
Xiaoting Xiong1, Jingyi Jiang2, Hanbo Yu2
1Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province, School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, China; Fujian Strait Graphene Industrial Technology Research Institute, Jinjiang 362200, China.
Bioresource technology
|April 2, 2025
概括
一个新的分区生物反应器增强了部分化/亚纳摩克斯 (PN/A) 过程,以实现稳定的废水处理. 这种系统加快了污泥颗粒化,甚至在高负载率下,也实现了80%以上的去除.
科学领域:
- 环境工程 环境工程
- 废水处理 废水处理
- 生物反应器技术技术
背景情况:
- 在部分化/亚纳摩克斯 (PN/A) 过程中保持长期的稳定性和效率对于有效的去除至关重要.
- 传统的PN/A系统面临着运行稳定性和功能微生物群落高效丰富方面的挑战.
- 优化生物反应器设计是克服液压保留时间和溶解氧 (DO) 控制限制的关键.
研究的目的:
- 开发和评估一个具有板的新型分区生物反应器,以改善PN/A过程中的空运内部循环.
- 评估生物反应器在启动时间,去除效率和污泥颗粒化方面的性能.
- 通过DO分离来研究生物反应器对酸盐氧化细菌 (NOB) 自动控制的能力.
主要方法:
- 一个具有独特板设计的新型分区生物反应器被建造,以增强内部循环.
- 生物反应器运行以实现启动并处理高度的氨和酸盐.
- 减少了液压保留时间,增加了加载率,以测试性能限制.
- 溶解氧 (DO) 分区被用于自动控制酸盐氧化细菌 (NOB).
主要成果:
- 生物反应器在38天内实现了启动,并有效地用150毫克N/L氨和50毫克N/L酸盐处理了影响.
- 加载率升级到0.60kg-N/m3/d,保持了80%以上的去除.
- 平均颗粒大小从85微米增加到338微米,支持强大的anammox活动 (1.02±0.05g-N/g-VSS/d).
- 通过DO分区实现了自动NOB控制,提高了工艺稳定性.
结论:
- 新型分区生物反应器有效地增强了PN/A过程中的功能细菌丰富和污泥颗粒化.
- DO和NOB自我调节的空间分布有助于稳定和高效的去除.
- 这种方法为PN/A废水处理提供了快速颗粒化和持续性能的高效解决方案.
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