镉离子对厌氧氨氧化脱氮性能的影响

发布时间：2018-03-19 00:35

本文选题：厌氧氨氧化　切入点：镉离子　出处：《中国给水排水》2016年17期 　论文类型：期刊论文

【摘要】：采用批次试验,研究镉离子对厌氧氨氧化(ANAMMOX)反应的短期影响。结果表明,镉离子浓度2 mg/L时,对厌氧氨氧化的脱氮性能影响较低;超过2 mg/L时,镉离子浓度的增加对厌氧氨氧化脱氮性能的抑制作用逐渐增大。采用模拟废水,以上流式厌氧污泥床(UASB)反应器实现厌氧氨氧化,研究镉离子对厌氧氨氧化反应器脱氮性能的长期影响。近150 d的连续培养发现,当镉离子浓度5 mg/L时,其厌氧氨氧化脱氮性能不受影响;当镉离子浓度≥10 mg/L时,厌氧氨氧化脱氮性能显著降低;经过约25 d的恢复培养,厌氧氨氧化脱氮性能得到恢复。
[Abstract]:The short term effect of cadmium ion on anammox reaction was studied by batch test. The results showed that the denitrification performance of anammox was lower when the concentration of cadmium ion was 2 mg/L, and when the concentration of cadmium ion was more than 2 mg/L, the effect of cadmium ion on the denitrification of anammox was lower than that of anammox. The inhibition of denitrification by anaerobic ammonia oxidation was gradually increased with the increase of cadmium ion concentration. Anaerobic ammonia oxidation was realized by using simulated wastewater and UASB reactor. The long-term effect of cadmium ion on denitrification performance of anaerobic ammoxidation reactor was studied. It was found that the denitrification performance of anaerobic ammonia oxidation reactor was not affected when the concentration of cadmium ion was 5 mg/L, and when the concentration of cadmium ion was more than 10 mg/L, the denitrification performance of anaerobic ammonia oxidation reactor was not affected when the concentration of cadmium ion was 5 mg/L. The performance of anaerobic ammonia oxidation denitrification was significantly decreased, and the anaerobic ammonia oxidation denitrification was restored after 25 days of recovery culture.
【作者单位】：华南理工大学环境与能源学院;贵州科学院;华南理工大学亚热带建筑科学国家重点实验室;工业聚集区污染控制与生态修复教育部重点实验室;
【基金】：国家重点研发计划项目(2016YFC0400702)
【分类号】：X703

【相似文献】