化工进展 ›› 2022, Vol. 41 ›› Issue (7): 3890-3899.doi: 10.16085/j.issn.1000-6613.2021-1775

• 资源与环境化工 • 上一篇    下一篇

新型厌氧水解酸化-短程反硝化厌氧氨氧化工艺同步处理生活污水和含硝酸盐模拟废水

王超超1(), 吴翼伶1, 陈嘉巧1, 蔡天宁1, 刘文如1,2,3, 李祥1,2,3, 吴鹏1,2,3()   

  1. 1.苏州科技大学环境科学与工程学院,江苏 苏州 215009
    2.城市生活污水资源化利用技术国家地方联合工程 实验室(苏州科技大学),江苏 苏州 215009
    3.江苏水处理技术与材料协同创新中心(苏州科技大学),江苏 苏州 215009
  • 收稿日期:2021-08-18 修回日期:2021-11-02 出版日期:2022-07-25 发布日期:2022-07-23
  • 通讯作者: 吴鹏 E-mail:3295634910@qq.com;wupengniu@126.com
  • 作者简介:王超超(1995—),男,硕士研究生,研究方向为污水处理与回用。E-mail: 3295634910@qq.com
  • 基金资助:
    国家自然科学基金(51578353)

A novel anaerobic hydrolysis acidification-partial denitrification anaerobic ammonia oxidation process for advanced nitrogen removal from simulated domestic and nitrate-containing wastewater

WANG Chaochao1(), WU Yiling1, CHEN Jiaqiao1, CAI Tianning1, LIU Wenru1,2,3, LI Xiang1,2,3, WU Peng1,2,3()   

  1. 1.School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu, China
    2.National and Local Joint Engineering Laboratory of Resource Utilization Technology of Municipal Sewage, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu, China
    3.Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu, China
  • Received:2021-08-18 Revised:2021-11-02 Online:2022-07-25 Published:2022-07-23
  • Contact: WU Peng E-mail:3295634910@qq.com;wupengniu@126.com

摘要:

构建新型厌氧水解酸化(AnHA)-短程反硝化厌氧氨氧化(PD/A)工艺,实现了低碳氮比模拟生活污水和低浓度硝酸盐模拟废水的同步和高效处理。通过控制进水NO3--N/NH4+-N=1.2、COD/TN=2.36,调控生活污水分段进水比为3∶7,AnHA反应器HRT=3.2h,AnHA-PD/A系统实现了94.78% TN去除,相应出水TN浓度仅为5.47mg/L,远低于我国城镇污水处理厂一级A排放标准。稳定运行期间,PD-Anammox过程作为AnHA-PD/A系统内最为主要的氮素去除过程,其对系统TN去除贡献率高达95.87%。气相色谱结果表明,乙酸作为AnHA出水主要有机成分(43.65%),即优质碳源供给极大地促进了PD/A系统内NO2--N供给过程。微生物高通量测序表明,CommamonasOmatilinea作为AnHA系统内相对丰度最高的水解和酸化菌属,在大分子有机物的降解产酸过程中发挥重要作用,相应丰度分别为2.97%和3.74%;PD/A系统内主要优势功能菌属为Candidatus BrocadiaThauera,相应丰度分别为2.93%和7.37%。

关键词: 厌氧水解酸化, 短程反硝化厌氧氨氧化, 分段进水, NO3--N/NH4+-N

Abstract:

A new anaerobic hydrolytic acidification (AnHA)-partial denitrification anaerobic ammonia oxidation (PD/A) process was constructed to realize the simultaneous and efficient treatment of simulated domestic sewage with low carbon nitrogen ratio and low concentration nitrate wastewater. By controlling the influent NO3--N/NH4+-N=1.2 and COD/TN=2.36, and adjusting the subsection influent ratio of domestic sewage to 3∶7 and AnHA reactor HRT=3.2h, AnHA-PD/A system had achieved 94.78% TN removal, and the corresponding effluent TN concentration was only 5.47mg/L, which was far lower than the level A discharge standard of urban sewage treatment plants in China. During the stable operation, PD-Anammox process was the most important nitrogen removal process in the AnHA-PD/A system, whose contribution rate to TN removal was as high as 95.87%. The results of gas chromatography showed that acetic acid, as the main organic component of AnHA effluent (43.65%), that is, high-quality carbon source supply, greatly promoted the supply process of NO2--N in the PD/A system. Microbial high-throughput sequencing showed that Commonas and Omatilinea, as the hydrolysis and acidification bacteria with the highest relative abundance in the AnHA system, played an important role in the degradation and acid production of macromolecular organics, with corresponding abundances of 2.97% and 3.74% respectively, and the main dominant functional bacteria in the PD/A system were CandidatusBrocadia and Thauera, with corresponding abundances of 2.93% and 7.37% respectively.

Key words: anaerobic hydrolysis acidification (AnHA), partial denitrification anaerobic ammonia oxidation (PD/A), segmented water inflow, NO3--N/NH4+-N

中图分类号: 

  • X703