Autotrophic nitrogen conversion process and microbial population distribution in biofilter that simultaneously removes Fe, Mn and ammonia from groundwater

作者：Yang, Hang; Li, Dong; Zeng, Huiping; Zhang, Jie^*

来源：International Biodeterioration & Biodegradation, 2018, 135: 53-61.

DOI：10.1016/j.ibiod.2018.09.008

• Biofilter
• Groundwater
• ANAMMOX
• Nitrification
• Nitrogen loss
• Microbial population distribution

One lab-scale biofilter that simultaneously removal of Fe, Mn and ammonia from groundwater was established to investigate autotrophic nitrogen conversion process and microbial population distribution. The results showed that 56 d were needed to achieve the required values of standards for Fe, Mn and ammonia under designing filtration rate. Fe, Mn, and ammonia was mainly removed at 0.2 m, 1.2 m, and 1.0 m in steady phase, respectively. Both nitrification and ANAMMOX contributed to nitrogen conversion. The calculation results demonstrated that autotrophic nitrogen removal proportion was about 48.3% in the steady operation period. Meanwhile, 11 putative Mn oxidizing bacteria (MnOB) were detected and putative MnOB was dominant in all the samples; Candidatus Kuenenia was the only detected Anaerobic Ammonium Oxidation (ANAMMOX) genus. The relationship between removal efficiency along the height and the taxonomic results was also concluded.

• 出版日期2018-11
• 单位城市水资源与水环境国家重点实验室; 哈尔滨工业大学; 北京工业大学