Acta Scientiarum Naturalium Universitatis Pekinensis ›› 2022, Vol. 58 ›› Issue (4): 680-686.DOI: 10.13209/j.0479-8023.2022.037

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Effects of Carbon-to-Nitrogen Ratio on Nitrogen and Phosphate Removal in A/O-MBR Wastewater Treatment Process

TAO Huchun1,†, TONG Hao1, WANG Jian2,†, HUANG Yilong2, ZHANG Lijuan1, YANG Kai1, DING Lingyun1, QIAO Xuejiao1, DOU Min1, XU Nan1
  

  1. 1. Shenzhen Key Laboratory for Heavy Metal Remediation and Reclamation, School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen 518055

    2. Shenzhen Water Planning & Design Institute Co Ltd, Shenzhen 518001

  • Received:2021-05-17 Revised:2021-06-14 Online:2022-07-20 Published:2022-07-20
  • Contact: TAO Huchun, E-mail: taohc(at)pkusz.edu.cn, WANG Jian, E-mail: wangj(at)swpdi.com

碳氮比对A/O-MBR工艺中污水脱氮除磷的影响研究

陶虎春1,†, 佟浩1, 王健2,†, 黄奕龙2, 张丽娟1, 杨凯1, 丁凌云1, 乔雪姣1, 豆敏1, 许楠1   

  1. 1. 深圳市重金属污染控制与资源化重点实验室, 北京大学深圳研究生院环境与能源学院, 深圳 518055 2. 深圳市水务规划设计院股份有限公司, 深圳 518001
  • 通讯作者: 陶虎春, E-mail: taohc(at)pkusz.edu.cn, 王健, E-mail: wangj(at)swpdi.com
  • 基金资助:
    深圳市科技计划基础研究(JCYJ20200109140616774)资助

Abstract:

The changing profiles of NH4+-N, total nitrogen (TN) and total phosphate (TP) were investigated in the A/O-MBR process at high and low carbon-to-nitrogen ratios. By elevating the carbon-to-nitrogen ratio, there was an increase in the removal efficiency of TN from 44.1%±8.9% to 78.5%±7.9%, while the removal efficiency remained unchanged for TP. Metabolite analyses revealed that enhanced metabolism of amino acids contributed significantly to efficient nitrogen removal from wastewater and the up-regulation of riboflavin biosynthesis, further improving the water quality.

Key words: A/O-MBR, carbon-to-nitrogen ratio, nitrogen removal, phosphate removal, metabolites

摘要:

在高、低碳氮比情况下, 探究A/O-MBR现场工艺中污水氨氮、总氮和总磷的去除效率及其变化规律。研究结果显示, 随着进水碳氮比升高, 出水中总氮去除效率由(44.1±8.9)%提升至(78.5±7.9)%, 总磷去除效率未受影响。差异性代谢产物分析表明, 提升碳氮比能够增强菌群的氨基酸代谢功能, 同时促进核黄素的生物合成, 共同提升污水中氮的去除效率。

关键词: A/O-MBR, 碳氮比, 脱氮, 除磷, 代谢物