膜生物反应器
微生物燃料电池
废水
生物反应器
膜污染
污水处理
生物传感器
制浆造纸工业
化学需氧量
化学
结垢
流出物
环境科学
膜
环境工程
电极
生物化学
物理化学
工程类
有机化学
阳极
作者
Shuai Zhao,Hui Yun,Aman Khan,El-Sayed Salama,Margarita Redina,Pu Liu,Xiangkai Li
标识
DOI:10.1016/j.envres.2021.112089
摘要
Lack of process control between the two stages of a combined microbial fuel cell-membrane bioreactor (MFC-MBR) system limits its application in wastewater treatment due to membrane fouling and high energy consumption. In this study, a two-stage MFC-MBR integrated system was established to investigate the impact of incorporating process control on petroleum refinery wastewater treatment. The results showed that chemical oxygen demand (COD) removal exhibits a linear relationship with the MFC voltage output (R2 = 0.9821); therefore, the MFC was used as a biosensor to control the combined system. The removal efficiencies of COD, ammonium nitrogen (NH4+-N), and total nitrogen (TN) were 96.3%, 92.4%, and 86.6%, respectively, in the MFC-MBR biosensor, whereas those in the control system were 74.7%, 71.2%, and 64.7% respectively. Furthermore,using the biosensor control system yielded a 50% reduction in the transmembrane pressure (1.01 kPa day-1) and decreased membrane fouling in wastewater treatment. The maximum energy recovery of the biosensor system (0.00258 kWh m-3) was five times higher than that of the control system, as determined by calculating the mass balance of the system. Thus, this study indicates that using the MFC as a biosensor for process control in an MFC-MBR system can improve overall system performance.
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