ZENGTing,HUYi-song,TANGJia-ling,et al.Procedure and Efficiency of Livestock Wastewater Energy Recovery Enhanced by AnMBR[J].China Water & Wastewater,2024,40(15):67-74.
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Procedure and Efficiency of Livestock Wastewater Energy Recovery Enhanced by AnMBR

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第40卷 Number: 第15期 Page: 67-74 Column: Date of publication: 2024-08-01
Author(s):
ZENG　Ting1;  HU　Yi-song1;  TANG　Jia-ling2; 3; 4;  PU　Yun-hui3;  HUANG　Jin3; 4;  SHI　Qiang5;  PAN　Sheng-wang3;  Abdelfatah Abomohra3
（1. School of Environmental and Municipal Engineering， Xi’an University of Architecture and Technology， Xi’an 710055， China； 2. Solid-state Fermentation Resource Utilization Key Laboratory of Sichuan Province， Yibin University， Yibin 644000， China； 3. School of Architecture and Civil Engineering， Chengdu University， Chengdu 610106， China； 4. Key Laboratory of Coarse Cereal Processing ， Chengdu University， Chengdu 610106， China； 5. Yibin Qinghe Environmental Technology Co. Ltd.， Yibin 645250， China）
Keywords:
anaerobic membrane bioreactor;  swine wastewater;  anaerobic digestion;  microbial community composition;  energy recovery
Abstract:
The characteristics of pollutant removal, methane generation and microbial community composition of an anaerobic membrane bioreactor (AnMBR) and a traditional up-flow anaerobic sludge bed (UASB) in the treatment of swine wastewater were analyzed. The removal rate of COD in the AnMBR remained at 80%-90%, whereas that of UASB was merely 40%-60%. Owing to the higher methanogenic activity of anaerobic microorganisms, the methane yield of AnMBR (up to 0.27 L/gCOD) exceeded that of UASB. Through the analysis of the microbial community composition in anaerobic sludge, it was discovered that the AnMBR sludge was enriched with a considerable number of functional bacteria capable of removing refractory organic matters, and also contained a significant number of acetotrophic and hydrotrophic methanogenic bacteria. The degradation pathways of organic matters were more abundant, and the methanogenesis pathways were more diverse, thereby ensuring higher methane yield. Additionally, the energy recovery efficiency of the AnMBR was higher than that of the UASB system, suggesting that the AnMBR employed in livestock wastewater treatment not only effectively eliminated pollutants but also enhanced energy recovery.
Last Update: 2024-08-01