Zhang Jun, Yu De-Shuang, Wang Xiao-Xia, Tang Jia-Jia, Zhao Hong, Han Chang-Min, Ying Ling-Qiao
School of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China.
Wuhan Kaidi Electric Power Environmental Co., Ltd., Wuhan 430023, China.
Huan Jing Ke Xue. 2018 Nov 8;39(11):5090-5100. doi: 10.13227/j.hjkx.201804082.
A pilot-scale anaerobic sequencing batch reactor (ASBR, working volume 530 L), inoculated with oxygen-segmented sludge in an oxidation ditch process, was developed to investigate the start-up of anaerobic ammonium oxidation (ANAMMOX) and its combination with denitrification for deep-level nitrogen removal from desulfurization and denitrification tailings of a thermal power plant. The results showed that, under conditions with a temperature of (35±1)℃and reaction time of 20 h, ANAMMOX was successfully started up after 180 days. During the stable operations phase, total nitrogen (TN) removal rate and removal efficiency reached 91.1% and 0.3 kg·(m·d), respectively. During the activity suppression stage of the ANAMMOX-ASBR treating real desulfurization and denitrification tailings, the recovery of its activity could be achieved in 93 days by removing inhibitory factors (Cl concentration) and reducing the concentration of influent substrate. In addition, by gradually increasing the addition ratio of desulfurization and denitrification tails (30%, 70%, and 100%), the coupling of ANAMMOX and denitrification was achieved in the ASBR to ensure stable effluent TN removal rate and COD concentrations below 92% and 88.5 mg·L, respectively. The modified logistic model was more suitable for the NRR recovery process after ANAMMOX was impacted by desulfurization and denitrification tailings. The NRR recovery delay time was 17.777 cycles, the and was 0.92948.
开发了一个中试规模的厌氧序批式反应器（ASBR，工作体积530升），接种氧化沟工艺中的分段曝气污泥，以研究厌氧氨氧化（ANAMMOX）的启动及其与反硝化的组合，用于从热电厂脱硫和反硝化尾矿中进行深度脱氮。结果表明，在温度为（35±1）℃、反应时间为20小时的条件下，180天后成功启动了ANAMMOX。在稳定运行阶段，总氮（TN）去除率和去除效率分别达到91.1%和0.3 kg·(m·d)。在ANAMMOX-ASBR处理实际脱硫和反硝化尾矿的活性抑制阶段，通过去除抑制因子（Cl浓度）和降低进水底物浓度，93天内可实现其活性的恢复。此外，通过逐渐提高脱硫和反硝化尾矿的添加比例（30%、70%和100%），在ASBR中实现了ANAMMOX与反硝化的耦合，以确保出水TN去除率稳定，COD浓度分别低于92%和88.5 mg·L。改进的逻辑模型更适合ANAMMOX受到脱硫和反硝化尾矿影响后的NRR恢复过程。NRR恢复延迟时间为17.777个周期， 为0.92948。
