Deciphering nitrogen-driven microbial succession in an anaerobic membrane bioreactor-coupled A2/O ecological system for the remediation of industrial swine wastewater
文献类型： 外文期刊
作者： Huang, Jing 1 ; Wu, Feilong 1 ; Xiao, Yanchun 1 ; Ye, Meifeng 1 ; Wu, Xiaomei 1 ; Chen, Han 2 ; Xu, Qingxian 1 ;
作者机构： 1.Fujian Acad Agr Sci, Inst Food Sci & Technol, Agr Pollut Control & Resource Utilizat Res Ctr, Fuzhou 35003, Peoples R China
2.Jingchu Univ Technol, Hubei Prov Key Lab Drug Synth & Optimizat, Jingmen 448000, Peoples R China
3.Jingchu Univ Technol, Coll Food & Biol, Jingmen 448000, Peoples R China
4.Chinese Acad Sci, Inst Hydrobiol, Key Lab Breeding Biotechnol & Sustainable Aquacult, Wuhan 430072, Peoples R China
关键词： Anoxic/aerobic process; High-density polyethylene membrane-based anaerobic reactor; Microbial community; Nitrogen removal; Oxidation pond; Swine wastewater
期刊名称：SCIENTIFIC REPORTS （ 影响因子：3.9； 五年影响因子：4.3 ）
ISSN： 2045-2322
年卷期： 2025 年 15 卷 1 期
页码：
收录情况： SCI
摘要：
Rapid expansion of industrial pig farming has intensified existing challenges in the management of nutrient-rich wastewater, characterized by high organic loads (chemical oxygen demand (COD): 15,000-30,000 mg/L) and ammonium nitrogen (NH4+-N): 800-2,500 mg/L) concentrations. In this study, an integrated treatment system with a combination of a high-density polyethylene (HDPE) membrane-based anaerobic membrane bioreactor and an anoxic/aerobic/oxidation pond (A2/O) was developed for swine wastewater remediation. The system achieved exceptional remediation efficiency, removing 99.4, 99.5, 95.4, 92.8, and 97.9% of COD, biochemical oxygen demand (BOD), NH4+-N, total phosphorus (TP), and suspended solids (SS), respectively, with the anoxic and aerobic (A2) phases contributing to removal of 62.5, 60.9, 80.9, 94.6% of COD, BOD, TP, and SS, respectively. Microbial community analysis revealed process-specific dynamics, including Firmicutes enrichment (8.52 +/- 3.33 to 10.81 +/- 0.39%) in anaerobic stages and Nitrosomonas dominance (2.38 +/- 0.21%) during nitrification. The HDPE membrane-based bioreactor performed effectively under high organic loading rates (5-8 kg COD
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