[1]于丽萍,袁林江,王茹,等.Anammox的硫酸盐利用特性及脱氮性能[J].中国给水排水,2021,37(15):1-7.
　YU Li-ping,YUAN Lin-jiang,WANG Ru,et al.Sulfate Utilization Characteristics and Denitrification Performance of Anammox Process[J].China Water & Wastewater,2021,37(15):1-7.
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Anammox的硫酸盐利用特性及脱氮性能

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第37卷 期数: 2021年第15期 页码: 1-7 栏目: 出版日期: 2021-08-01
Title:
Sulfate Utilization Characteristics and Denitrification Performance of Anammox Process
作者:
于丽萍1,2,3，袁林江1,2,3，王茹1,2,3，袁林杰1,2,3
(1.西安建筑科技大学环境与市政工程学院，陕西西安710055；2.陕西省环境工程重点实验室，陕西西安710055；3.西北水资源与环境生态教育部重点实验室，陕西西安710055)
Author(s):
YU Li-ping1,2,3,YUAN Lin-jiang1,2,3,WANG Ru1,2,3，YUAN Lin-jie1,2,3
(1. School of Environmental and Municipal Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China; 2. Shaanxi Key Laboratory of Environment Engineering, Xi’an 710055, China; 3. Key Laboratory of Northwest Water Resources and Environment Ecology , Xi’an 710055, China)
关键词:
Anammox; 硫酸盐; 脱氮性能; AOB; NOB
Keywords:
Anammox; sulfate; denitrification performance; AOB; NOB
摘要:
以厌氧氨氧化(Anammox)污泥为种泥，进水中用SO2-4全部替代NO2--N作为电子受体来驯化污泥去氧化NH4+-N。反应器运行180 d后， NH4+-N去除量变化情况与Anammox菌活性变化情况相近，系统整体NH4+-N去除量在40 mg/L以上，但SO2-4并未去除，因此认为SO2-4不能作为电子受体来氧化NH4+-N，推测NH4+-N的去除可能存在其他电子受体；向反应器中添加5 mmol/L的羟氨能促进NH4+-N的去除，说明NH4+-N的去除与Anammox菌活性有关。反应器中Candidatus Brocadia和Candidatus Jettenia丰度由2.40%增至15.63%，Nitrosomonas属丰度由0.03%增至6.32%，Nitrobacter属丰度由0.12%增至1.54%，AOB活性大于NOB。菌群数量变化说明反应器中NH4+-N的去除与AOB、NOB以及Anammox活性有关。在批次实验中，向反应瓶中注入微量氧气后，氨氮的去除与AOB、NOB的硝化作用以及Anammox菌活性呈现显著相关，推测反应器中NH+4-N的去除与内部溶解氧量有关。
Abstract:
Anammox sludge was used as the seed sludge, and SO2-4 was used to replace NO2--N as the electron acceptor to domesticate the sludge and oxidize NH4+-N. After the reactor was operated for 180 days, the change of ammonia nitrogen removal in the system was similar to that of Anammox bacteria activity. The overall ammonia nitrogen removal of the system was more than 40 mg/L, but sulfate was not removed. It was concluded that SO2-4 could not be used as an electron acceptor to oxidize NH4+-N, and there might be other electron acceptors to oxidize and remove NH4+-N. Adding 5 mmol/L hydroxylamine to the reactor could promote the removal of ammonia nitrogen, indicating that the removal of ammonia nitrogen was related to the activity of Anammox bacteria. The abundance of Candidatus Brocadia and Candidatus Jettenia in the reactor increased from 2.40% to 15.63%; the abundance of Nitrosomonas increased from 0.03% to 6.32%; the abundance of Nitrobacter increased from 0.12% to 1.54%, and the activity of AOB was greater than that of NOB. The change in the number of bacteria indicated that the removal of ammonia nitrogen in the reactor was related to the activity of AOB, NOB and Anammox bacteria. In batch experiments, after a trace amount of oxygen was injected into the reaction flask, the removal of ammonia nitrogen was significantly related to the nitrification of AOB and NOB and the activity of Anammox bacteria. It was speculated that the removal of ammonia nitrogen in the reactor was related to the amount of internal dissolved oxygen.
更新日期/Last Update: 2021-08-01