苏氏尾鳃蚓扰动下膜曝气生物膜对富营养化水体氮磷去除的研究

邓连森; 李亚群; 高杰; 于雪松; 梁梓豪; 姚婧梅; 韩乐

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中国环境科学 ›› 2026, Vol. 46 ›› Issue (2) : 707-714.

水污染与控制

苏氏尾鳃蚓扰动下膜曝气生物膜对富营养化水体氮磷去除的研究

邓连森, 李亚群, 高杰, 于雪松, 梁梓豪, 姚婧梅, 韩乐

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The degradation mechanisms of nitrogen and phosphorus in eutrophic water by MABR under the bioturbation of Branchiurasowerbyi

DENG Lian-sen, LI Ya-qun, GAO Jie, YU Xue-song, LIANG Zi-hao, YAO Jing-mei, HAN Le

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摘要

选取富营养化湖泊的优势底栖物种—苏氏尾鳃蚓(Branchiurasowerbyi)与材质为聚丙烯(PP)的曝气膜组件,构建微宇宙实验,研究底栖动物扰动下,膜曝气生物膜(MABR)对上覆水溶解氧(DO)浓度、沉积物DO渗透深度以及上覆水总有机碳(TOC)和氮磷去除的影响.结果表明,在苏氏尾鳃蚓扰动增加氮磷释放且降低DO的情况下,MABR仍能较好地维持上覆水水质和复氧效果,沉积物DO渗透深度显著增加,上覆水氨氮(NH₄⁺-N)、总氮(TN)及总磷(TP)的去除效果仍能维持较高水平(去除率分别为93.4%、83.27%和90.80%).MABR去除水体氮磷的工艺系统能有效应对自然水体中苏氏尾鳃蚓的扰动.

Abstract

The dominant benthic macroinvertebrate species in eutrophic lakes, Branchiurasowerbyi, and polypropylene (PP)-based membrane aerated biofilm reactor (MABR) were selectedin this study, where based oncontrolled microcosm experiments, we explored the effects of benthic bioturbationon dissolved oxygen (DO) concentration in overlying water, DO infiltration depth in the sediments, and the removal of total organic carbon (TOC), nitrogen (NH₄⁺-N, NO₃^--N, NO₂^--N and TN), and phosphorus (PO₄^3--P and TP) by MABR. While the perturbation ofB. sowerbyi enhanced Nand Prelease and reduced DO concentrations, the MABR effectively maintained a high level of reoxygenation performance, significantly increasing the DO infiltration depth in the sediments.The removal rates of NH₄⁺-N, TN, and TP remained high at 93.4%, 83.27%, and 90.80%, respectively, demonstrating significant improvements compared to the control group and the B. sowerbyi-only group.Hence, MABR system in removing N and P could effectively cope with the perturbation of B. sowerbyi in eutrophic water bodies.

导出引用

邓连森, 李亚群, 高杰, 于雪松, 梁梓豪, 姚婧梅, 韩乐. 苏氏尾鳃蚓扰动下膜曝气生物膜对富营养化水体氮磷去除的研究[J]. 中国环境科学. 2026, 46(2): 707-714

DENG Lian-sen, LI Ya-qun, GAO Jie, YU Xue-song, LIANG Zi-hao, YAO Jing-mei, HAN Le. The degradation mechanisms of nitrogen and phosphorus in eutrophic water by MABR under the bioturbation of Branchiurasowerbyi[J]. China Environmental Science. 2026, 46(2): 707-714

中图分类号： X524

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