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The degradation mechanisms of nitrogen and phosphorus in eutrophic water by MABR under the bioturbation of Branchiurasowerbyi
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Lian-sen DENG, Ya-qun LI, Jie GAO, Xue-song YU, Zi-hao LIANG, Jing-mei YAO*, Le HAN
China Environmental Science | 2026, 46(2) : 707 - 714
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China Environmental Science | 2026, 46(2): 707-714
• Water Pollution Control •
The degradation mechanisms of nitrogen and phosphorus in eutrophic water by MABR under the bioturbation of Branchiurasowerbyi
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Lian-sen DENG, Ya-qun LI, Jie GAO, Xue-song YU, Zi-hao LIANG, Jing-mei YAO*, Le HAN
Affiliations
  • Key Laboratory of Ecological Environment in the Three Gorges Reservoir Area, Chongqing University, Chongqing 400045, China
Published: 2026-02-20
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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 (PO43--P and TP) by MABR. While the perturbation of B. 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.

eutrophic water  /  bioturbation  /  Branchiurasowerbyi  /  MABR  /  nitrogen and phosphorus removal
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. 中国环境科学, 2026 , 46 (2) : 707 -714 .
Lian-sen DENG, Ya-qun LI, Jie GAO, Xue-song YU, Zi-hao LIANG, Jing-mei YAO, Le HAN. 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 .
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Year 2026 volume 46 Issue 2
69
12
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Article Info
  • Receive Date：2025-06-12
  • Online Date：2026-10-08
  • Published：2026-02-20
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  • Received：2025-06-12
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    Key Laboratory of Ecological Environment in the Three Gorges Reservoir Area, Chongqing University, Chongqing 400045, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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