Zhang Shi-ying, Wu Peng, Song Yin-ling, Shen Yao-liang, Zhang Ting
Huan Jing Ke Xue. 2015 Nov;36(11):4174-9.
In this study, an Anaerobic Baffled Reactor ( ABR) was constructed. The ANAMMOX process was successfully started up using this reactor within 45 days under the following condition: 27 degrees C, pH of 8, HRT of 10 h, and the influent NO2(-) -N/NH4(+) -N was 1.32. At the stable phase, the average TN removal percentages reached 83% and the ΔNH4(+) -N: ΔNO2(-) -N: ΔNO3(-) -N was 1 : 1. 31 : 0.27. In the process of treating municipal sewage, there was inevitably a certain amount of organic carbon in the influent. Organic carbon had no obvious effect on the ANAMMOX process at C/N of 0.5; Nitrogen removal was improved, and the average total nitrogen (TN, including ammonia, nitrite and nitrate nitrogen) removal efficiency of 93% was obtained at C/N of 1. However, at C/N of 2, the TN removal performance reduced due to the suppression of ANAMMOX by organic carbon; the ANAMMOX bacteria could recover their activity in a short period of time by reducing the influent COD concentration. In this work, the performance of the ANAMMOX-denitrification process in the treatment of municipal sewage was investigated, which proved the suitability of ABR-denitrification reactor in treating municipal sewage with low ammonia nitrogen concentration, with an effluent TN concentration of 7.5 mg x L(-1), and the average TN removal percentages reaching 86%.
在本研究中，构建了一个厌氧折流板反应器（ABR）。在27℃、pH值为8、水力停留时间（HRT）为10小时且进水NO2(-)-N/NH4(+)-N为1.32的条件下，利用该反应器在45天内成功启动了厌氧氨氧化过程。在稳定阶段，平均总氮（TN）去除率达到83%，ΔNH4(+)-N:ΔNO2(-)-N:ΔNO3(-)-N为1:1.31:0.27。在处理城市污水的过程中，进水不可避免地含有一定量的有机碳。当碳氮比（C/N）为0.5时，有机碳对厌氧氨氧化过程没有明显影响；当C/N为1时，脱氮效果得到改善，平均总氮（TN，包括氨氮、亚硝酸盐氮和硝酸盐氮）去除效率达到93%。然而，当C/N为2时，由于有机碳对厌氧氨氧化的抑制作用，TN去除性能降低；通过降低进水化学需氧量（COD）浓度，厌氧氨氧化细菌可以在短时间内恢复其活性。在本研究中，对厌氧氨氧化-反硝化过程处理城市污水的性能进行了研究，结果证明ABR-反硝化反应器适用于处理低氨氮浓度的城市污水，出水TN浓度为7.5mg·L(-1)，平均TN去除率达到86%。
