工业水处理 ›› 2026, Vol. 46 ›› Issue (3): 83-90. doi: 10.19965/j.cnki.iwt.2025-0303

• 试验研究 • 上一篇    下一篇

SAD-ANAMMOX耦合脱氮工艺的负荷与基质比调控

刘栋丽1,2(), 黄文慧1,2, 高佳琦1,2, 李寓哲1,2, 李祥1,2, 黄勇1,2()   

  1. 1. 苏州科技大学环境科学与工程学院,江苏 苏州 215009
    2. 苏州科技大学环境生物技术研究所,江苏 苏州 215009
  • 收稿日期:2025-07-04 出版日期:2026-03-20 发布日期:2026-03-30
  • 通讯作者: 黄勇
  • 作者简介:

    刘栋丽(1994— ),硕士,E-mail:

  • 基金资助:
    国家自然科学基金项目(51938010)

Load and substrate ratio regulation of SAD-ANAMMOX coupled denitrification process

Dongli LIU1,2(), Wenhui HUANG1,2, Jiaqi GAO1,2, Yuzhe LI1,2, Xiang LI1,2, Yong HUANG1,2()   

  1. 1. School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
    2. Institute of Environmental Biotechnology, Suzhou University of Science and Technology, Suzhou 215009, China
  • Received:2025-07-04 Online:2026-03-20 Published:2026-03-30
  • Contact: Yong HUANG

摘要:

厌氧氨氧化(ANAMMOX)技术凭借无有机碳源依赖、高效脱氮及低污泥产率等特性,成为污水处理领域可持续脱氮的核心工艺。通过硫自养反硝化(SAD)与ANAMMOX耦合一体化反应器处理含氮废水,系统解析进水负荷及基质比对系统脱氮效能的影响。结果表明:在进水NH4 +-N和NO3 --N分别为26.40、38.01mg/L,温度为(33±2) ℃,S/N=8.8,进水pH=7.8的条件下,反应器成功启动并实现SAD与ANAMMOX的高效耦合。当进水总氮容积负荷(TNLR)增幅过大(95%)时,系统崩溃,但通过降低TNLR可使系统恢复正常运行,当逐步提升TNLR,增幅不超过35.36%时,系统可稳定高效运行,TNLR由0.19 kg/(m3·d)增至0.92 kg/(m3·d),总氮去除率(TNRE)最高达93.34%。当S/N=1.5、n(NH4 +-N)/n(NO3 --N)为1/1.38~1/1.72时,系统脱氮以硫自养半程反硝化耦合ANAMMOX途径为主导,NH4 +-N和NO3 --N去除率分别达85.17%~94.79%和88.86%~95.70%。该研究结果为SAD-ANAMMOX一体化反应器启动及智能控制提供关键技术参数,并建立了反应器失稳恢复策略,为工程设计中安全系数的确定提供了量化依据,为解决污水脱氮领域的关键技术瓶颈提供了创新性解决方案。

关键词: 厌氧氨氧化(ANAMMOX), 硫自养反硝化, 氮负荷, S/N

Abstract:

Anaerobic ammonium oxidation (ANAMMOX) technology has emerged as a core process in the field of sustainable nitrogen removal, owing to its distinctive characteristics such as no dependence on organic carbon sources, high-efficiency nitrogen removal, and low sludge yield. In this study, an integrated reactor coupling sulfur autotrophic denitrification (SAD) and ANAMMOX was employed to treat nitrogen-containing wastewater, and the effects of influent load and substrate ratio on the nitrogen removal performance of the system were systematically analyzed. The results showed that the reactor was successfully started up and achieved efficient coupling of SAD and ANAMMOX under the conditions of influent NH4 +-N and NO3 --N concentrations of 26.40 mg/L and 38.01 mg/L, respectively, temperature of (33±2) ℃, S/N ratio of 8.8, and influent pH of 7.8. The system collapsed when the increase amplitude of influent total nitrogen loading rate (TNLR) was excessively high (95%), but it could resume normal operation by reducing the TNLR. When the TNLR was gradually increased with an amplitude not exceeding 35.36%, the system maintained stable and high-efficiency operation. As the TNLR increased from 0.19 kg/(m3·d) to 0.92 kg/(m3·d), the total nitrogen removal efficiency (TNRE) reached a maximum of 93.34%. When the S/N ratio was 1.5 and n(NH4 +-N)∶n(NO3 --N) ratio ranged from 1∶1.38 to 1∶1.72, the nitrogen removal of the system was dominated by the pathway of sulfur autotrophic partial denitrification coupled with ANAMMOX, with the removal rates of NH4 +-N and NO3 --N reaching 85.17%-94.79% and 88.86%-95.70%, respectively. The research results provide key technical parameters for the start-up and intelligent control of the SAD-ANAMMOX integrated reactor, establish a strategy for the recovery of reactor instability, offer a quantitative basis for determining the safety factor in engineering design, and present an innovative solution to address the key technical bottlenecks in the field of wastewater nitrogen removal.

Key words: anaerobic ammonia oxidation(ANAMMOX), sulfur autotrophic denitrification, nitrogen load, S/N

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