启动一个全面的两阶段部分化/亚纳摩克斯 (PN/A) 工艺,处理来自高固体无氧污泥消化 (HSAD) 的废水
Shuyan Zhou1, Hui Gong1, Enhui Xu1
1College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China.
Water research X
|October 21, 2024
概括
这项研究成功启动了一种部分化/亚纳摩克斯 (PN/A) 工艺,用于高固体无氧消化 (HSAD) 排斥没有播种污泥的水. 这种创新方法实现了高去除和显著的成本节省.
科学领域:
- 环境工程 环境工程
- 微生物生态学 微生物生态学
- 废水处理 废水处理
背景情况:
- 高固体无氧消化 (HSAD) 产生含有高和COD水平的缩废水.
- 这些度抑制了亚纳摩克斯细菌 (AnAOB),挑战了部分化/亚纳摩克斯 (PN/A) 工艺的应用.
- 没有关于PN/A工艺启动的先前报告,专门针对HSAD排泄水.
研究的目的:
- 为了证明HSAD拒绝水的全面PN/A过程的启动.
- 为了实现成功的PN/A操作,没有anammox污泥注射.
- 评估升级PN/A流程的性能和成本效益.
主要方法:
- 利用现有的基础设施,将快捷的化-脱过程升级为两阶段PN/A系统.
- 实施了三个阶段的启动策略:AnAOB缩,污泥适应和产能翻倍.
- 处理了480m3/d的HSAD废水,这些废水来自一个集中的脱水污泥厂.
主要成果:
- 在273天内成功启动PN/A过程,没有外部ANAOB接种.
- 将AnAOB (Candidatus_Kuenenia) 的相对丰度增加到12.0%.
- 实现了0.74kgN/m3•d的总无机去除负荷,总去除效率超过90%.
结论:
- 在没有播种污泥的战略方法下,可以成功启动PN/A过程,用于HSAD废水.
- 这种方法提供了显著的运营成本节约 (约. 与传统工艺相比,每年需要420万元人民币 (约合人民币4.2亿元人民币).
- 为在类似具有挑战性的废水场景中实施PN/A技术提供了有价值的全面参考.
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