自驱弱电强化措施对厌氧氨氧化人工湿地脱氮性能的影响

徐湛禹; 汤翀; 刘俊杰; 张剑波; 朱祺琪; 潘玲阳; 李定心; 平腊梅; 李刚; 王振

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中国环境科学 ›› 2025, Vol. 45 ›› Issue (5) : 2490-2502.

水污染与控制

自驱弱电强化措施对厌氧氨氧化人工湿地脱氮性能的影响

徐湛禹¹, 汤翀¹, 刘俊杰¹, 张剑波¹, 朱祺琪¹, 潘玲阳², 李定心², 平腊梅¹, 李刚³, 王振¹

作者信息 +

Effect of self-drive weak electric strengthening measure on nitrogen removal of a constructed wetland based on ANAMMOX

XU Zhan-yu¹, TANG Chong¹, LIU Jun-jie¹, ZHANG Jian-bo¹, ZHU Qi-qi¹, PAN Ling-yang², LI Ding-xin², PING La-mei¹, LI Gang³, WANG Zhen¹

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文章历史 +

摘要

将基于ANAMMOX的复合潜流人工湿地(HCW)改造为自驱弱电强化人工湿地(SECW),考察了SECW在试验阶段的运行性能,探究了稳定运行时装置的微生物特性,另解析并阐释了其中的氮转化途径.结果表明,电活性生物膜的预制及电极的合理布设可使SECW中的电极氨氧化作用和阴极反硝化作用得到同步强化,同时亦可使填料层中厌氧氨氧化菌的丰度及活性得以提高.在此基础上,装置中可形成基于ANAMMOX的多路径耦合脱氮体系,由此可显著改善其脱氮性能.当SECW的电极布设方式为“双阴极-单阳极”形式且其水力负荷(HLR)为0.08m³/(m²·d)时,装置的运行性能较为理想,其COD、TP、TN和NH₄⁺-N去除率分别稳定在(91.39±3.09)%、(93.64±1.15)%、(91.67±2.77)%和(94.34±2.72)%,输出电压和输出功率密度分别为(816.45±8.44)mV和651.96W/m³.

Abstract

A self-drive weak electric strengthening constructed wetland (SECW), which was renovated from a hybrid subsurface constructed wetland (HCW) based on ANAMMOX, was established in this study, and its operational performance was thoroughly investigated. Further, the microbial characteristics in the system during the steady operational period were explored, and the nitrogen transformation pathways were also analyzed and elucidated. The results showed that, prefabrication of electroactive biofilms and appropriate layout of the electrodes not only simultaneously enhanced electrode-dependent ammonium oxidation and cathodic denitrification in the SECW, but also significantly increased the abundance and activity of anaerobic ammonium-oxidizing bacteria in its substrate layer. Consequently, a multi-path nitrogen removal system based on ANAMMOX was formed in the device, thereby significantly improving the nitrogen removal performance of the SECW. When the electrode configuration was adopted as “double cathode-single anode” and the hydraulic loading rate (HLR) was 0.08m³/(m²·d), the SECW exhibited optimal performance. Specifically, its COD, TP, TN, and NH₄⁺-N removal rates could reach up to (91.39±3.09)%, (93.64±1.15)%, (91.67±2.77)%, and (94.34±2.72)%, respectively. Additionally, the mean output voltage and power density of the system respectively maintained at (816.45±8.44)mV and 651.96W/m³.

导出引用

徐湛禹, 汤翀, 刘俊杰, 张剑波, 朱祺琪, 潘玲阳, 李定心, 平腊梅, 李刚, 王振. 自驱弱电强化措施对厌氧氨氧化人工湿地脱氮性能的影响[J]. 中国环境科学. 2025, 45(5): 2490-2502

XU Zhan-yu, TANG Chong, LIU Jun-jie, ZHANG Jian-bo, ZHU Qi-qi, PAN Ling-yang, LI Ding-xin, PING La-mei, LI Gang, WANG Zhen. Effect of self-drive weak electric strengthening measure on nitrogen removal of a constructed wetland based on ANAMMOX[J]. China Environmental Science. 2025, 45(5): 2490-2502

中图分类号： X703

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