Feasibility of in situ enriching anammox bacteria in a sequencing batch biofilm reactor (SBBR) for enhancing nitrogen removal of real domestic wastewater
Feasibility of in situ enriching anammox bacteria in a sequencing batch biofilm reactor (SBBR) for enhancing nitrogen removal of real domestic wastewater
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在序批式生物膜反应器（SBBR）中原位富集厌氧氨氧化菌以增强实际生活废水脱氮的可行性
DOI：
10.1016/j.cej.2018.06.024
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发表时间：
2018-11
影响因子：
15.1
通讯作者：
Y. Peng
中科院分区：
文献类型：
--
作者：
J. Zhang;L. Zhang;Y. Miao;Y. Sun;X. Li;Q. Zhang;Y. Peng
采用原位富集厌氧氨氧化菌的序批式生物膜反应器（SBBR）对有机碳氮比为2.1-3.6的低有机碳氮比真实的生活污水进行强化脱氮试验。SBBR反应器以普通硝化污泥为接种物，在厌氧、好氧、缺氧交替模式下运行。在启动期间，进水氮负荷和碳负荷逐渐增加。根据微生物定量分析，氨氧化菌和厌氧氨氧化菌的生长得到了促进，分别从6.56 × 104和1.11 × 104增加到1.51 × 107和1.69 × 106基因拷贝·mL-1。在稳定期（第102-205天），当进水氨氮平均值为53.9 ± 4.0 mg·L-1时，出水总氮为6.3 mg·L-1，氮去除率为88.2%。当温度从27.0 ° C降至12.8 °C时，脱氮稳定。活性间歇和连续试验结果表明，氮化合物的变化表明厌氧氨氧化反应可能是脱氮的主要途径。对于高脱氮性能，生物膜和后缺氧单元可以发挥重要作用。总的来说，本研究提供了一种替代方法，以提高去除氮从污水中直接富集厌氧氨氧化菌。
In this study, enhanced removal of nitrogen from real domestic wastewater with low organic carbon to nitrogen ratio of 2.1–3.6 was achieved in a sequencing batch biofilm reactor (SBBR) with enriching anammox bacteria in situ. The SBBR was inoculated with ordinary nitrification sludge and operated under alternative anaerobic, aerobic and anoxic patterns. During the start-up period, influent nitrogen and carbon loading rate gradually increased. According to the quantitative microbial analysis, the growth of ammonium oxidizing bacteria and anammox bacteria were promoted, resulting in an increase from 6.56 × 104to 1.51 × 107and from 1.11 × 104to 1.69 × 106gene copies·mL−1, respectively. During the steady period (Day 102–205), nitrogen removal efficiency of 88.2% was achieved with an effluent total nitrogen of 6.3 mg N·L−1for average influent ammonium of 53.9 ± 4.0 mg·L−1. Nitrogen removal was steady when temperature decreased from 27.0 to 12.8 °C. Variations in nitrogen compounds suggested that anammox reaction could be the main pathway for nitrogen removal, according to the results of activity batch and continuous tests. For the high nitrogen removal performance, biofilm and post-anoxic unit could play important roles. Overall, this study provided an alternative method to improve the removal of nitrogen from sewage by directly enriching anammox bacteria.
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影响因子：
11.4
作者：
Gilbert, Eva M.;Agrawal, Shelesh;Lackner, Susanne
通讯作者：
Lackner, Susanne
影响因子：
12.8
作者：
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影响因子：
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作者：
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通讯作者：
Wilen, Britt-Marie
影响因子：
4.1
作者：
Oehmen, A;Keller-Lehmann, B;Keller, E
通讯作者：
Keller, E
主流部分硝酸和Anammox：长期过程稳定性和低温下的废水质量。
影响因子：
12.8
作者：
Laureni M;Falås P;Robin O;Wick A;Weissbrodt DG;Nielsen JL;Ternes TA;Morgenroth E;Joss A
通讯作者：
Joss A