Department of Environmental Engineering, National Cheng Kung University, Tainan, 70101, Taiwan.
Taiwan Sugar Research Institute (TSRI), Tainan, 701036, Taiwan.
Chemosphere. 2024 Sep;364:143116. doi: 10.1016/j.chemosphere.2024.143116. Epub 2024 Aug 17.
Anammox process offers reduced operational cost and energy requirement compared to nitrification-denitrification methods due to lower biomass generation and no need for external carbon sources and aeration. High ammonia concetration and low biodegradable anaerobic digester of swaine wastewater provided an advantage for the growth of anammox microorangism. An anoxic/oxic (A/O) SBR and an anammox SBR were implemented parallelly to treat the same swine wastewater with partial nitrification/denitrification and partial nitrification/anammox process, respectively, and to compare their nitrogen removal efficiency. The nitrogen removal rates (NRRs) of the A/O SBR and anammox SBR were 0.054 and 0.26 kg-N/m/day, respectively. The lower NRR of the A/O SBR could be attributed to insufficient biodegradable organic carbon sources in the denitrification process. The kinetic parameters obtained from the two SBRs were applied to estimate the time required for using the A/O process and partial nitrification/anammox process to treat the same amount of ammonia with the same reaction volume. Results showed that the A/O process required 3.3 times the reaction time of the partial nitrification/anammox process, suggesting that the partial nitrification/anammox process is a more efficient and economic nitrogen removal process for swine wastewater treatment. The next generation sequencing results revealed that Candidatus Brocadia, ranging from 10 to 23%, was the predominant anammox bacteria in the anammox SBR. More than 78.2 % of nitrite in the anammox SBR was removed through the anammox reaction.
厌氧氨氧化工艺与硝化-反硝化方法相比，由于生物量生成较少且无需外加碳源和曝气，因此具有较低的运行成本和能源需求。斯旺废水的高氨浓度和低可生物降解厌氧消化为厌氧氨氧化微生物的生长提供了优势。缺氧/好氧 (A/O) SBR 和厌氧氨氧化 SBR 并行实施，分别采用部分硝化/反硝化和部分硝化/厌氧氨氧化工艺处理相同的猪废水，并比较其脱氮效率。A/O SBR 和厌氧氨氧化 SBR 的氮去除率（NRR）分别为 0.054 和 0.26 kg-N/m/d。A/O SBR 的 NRR 较低可能是由于反硝化过程中可生物降解有机碳源不足。从两个 SBR 获得的动力学参数用于估计使用 A/O 工艺和部分硝化/厌氧氨氧化工艺处理相同量氨所需的时间，使用相同的反应体积。结果表明，A/O 工艺需要部分硝化/厌氧氨氧化工艺反应时间的 3.3 倍，这表明部分硝化/厌氧氨氧化工艺是一种更有效和经济的猪废水脱氮处理工艺。下一代测序结果表明，厌氧氨氧化菌属（Candidatus Brocadia）占 10%至 23%，是厌氧氨氧化 SBR 中的主要厌氧氨氧化菌。厌氧氨氧化 SBR 中超过 78.2%的亚硝酸盐通过厌氧氨氧化反应去除。
