Enhanced methane production coupled with livestock wastewater treatment using anaerobic membrane bioreactor: Performance and membrane filtration properties. (February 2022)

• Record Type: Journal Article
• Authors: Tang, Jialing; Pu, Yunhui; Zeng, Ting; Hu, Yisong; Huang, Jin; Pan, Shengwang; Wang, Xiaochang C.; Li, Yuyou; Abomohra, Abd El-Fatah
• Is Part Of: Bioresource technology. Volume 345(2022)
• Publication Date: 2022-02
• Subjects: Swine wastewater -- Anaerobic membrane bioreactor (AnMBR) -- Biomethane -- Membrane fouling -- Waste-to-Energy; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2021.126470
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: AnMBR was evaluated to enhance biogas and pollution removal from swine wastewater. Temperature and F/M ratio showed significant impact on reactor performance. Highest methane yield and microbial activity were recorded at HRT of 15 days. Cake layer and EPS resulted in serious membrane fouling with a decreased HRT. Membrane permeability could be recovered through physical backwash. Abstract: The present study introduced a new method for enhanced biomethane production and pollution control of swine wastewater (SW) using anaerobic membrane bioreactor (AnMBR). Results confirmed 35 °C as the optimum temperature for enhanced anaerobic digestion which resulted in relatively higher methane production rate and potential. In AnMBR system, robust pollutants removal and conversion rate were achieved under various hydraulic retention time (HRT) ranging from 20 to 10 days, while the highest methane yield (0.24 L/g-CODremoved ) and microbial activity (6.65 mg-COD/g-VSS·h) were recorded at HRT of 15 days. Reduction of HRT to 10 days resulted in serious membrane fouling due to accumulation of extracellular polymeric substances (EPS) and cake layer on the membrane. However, cake layer as the dominant membrane foulant could be effectively removed through periodic physical backwash to recover the membrane permeability. Overall, the suggested AnMBR is a promising technology to enhance SW treatment and energy recovery.