在活性污泥中有效丰富无氧氨氧化细菌的策略
Bin Tang1, Jin Wang1, Xingdong Gao1
1Key Laboratory of Northwest Water Resource, Environment, and Ecology, MOE, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Xi'an Key Laboratory of Intelligent Equipment Technology for Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.
Journal of environmental sciences (China)
|October 31, 2024
概括
这项研究开发了一种简单的方法,通过调整反流率和加载率,从活性污泥中快速丰富Anammox细菌. 这种方法提高了Anammox细菌的丰富性和可持续废水处理的效率.
科学领域:
- 环境微生物学 环境微生物学
- 废水处理技术 废水处理技术
- 生物技术是生物技术.
背景情况:
- 无氧氨氧化 (Anammox) 提供了废水中可持续的去除.
- 从活性污泥中丰富Anammox细菌是一个重大挑战.
- 由于缩难度,Anammox在主流工艺中的应用有限.
研究的目的:
- 开发一种快速有效的方法来丰富Anammox细菌.
- 为了研究反流比率和负载率 (NLR) 对缩的影响.
- 为了确定Anammox工艺在主流废水处理中的可行性.
主要方法:
- 使用常规活性污泥作为注射剂.
- 实施了选阶段,增加了反流率,以减少微生物竞争.
- 应用了一个富化阶段,逐渐增加NLR.
- 监测微生物群落结构和去除性能.
主要成果:
- 阿纳莫克斯细菌 (Candidatus Brocadiaceae) 的相对丰度从0.04%增加到61.27%.
- 实现了近乎理论的静脉测量比率,表明了Anammox的主导地位.
- 证明了高的去除效率 (71.89%) 和3.00kgN/m3·d的去除率 (NRR).
- 成功诱导了392.4微米颗粒大小的污泥颗粒化.
结论:
- 从活性污泥中丰富Anammox细菌的一个简单而有效的方法被建立起来.
- 该方法支持在废水处理中快速启动Anammox过程.
- 这种技术有助于Anammox在主流废水处理中得到更广泛的应用.
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