AI Article Synopsis
- A new method using an anaerobic membrane bioreactor (AnMBR) was developed to improve biomethane production and manage pollution from swine wastewater.
- Optimal methane production occurred at 35 °C, with the best results seen at a hydraulic retention time (HRT) of 15 days, yielding 0.24 L/g-COD.
- Although reducing HRT to 10 days led to issues with membrane fouling, these could be managed through regular physical backwashing, making AnMBR a viable solution for wastewater treatment and energy recovery.
Article 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-COD) 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 extracellularpolymericsubstances(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.
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| http://dx.doi.org/10.1016/j.biortech.2021.126470 | DOI Listing |
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