Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aoba, Aramaki-Aza, Sendai, Miyagi 980-8579, Japan; School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, China.
Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aoba, Aramaki-Aza, Sendai, Miyagi 980-8579, Japan.
Bioresour Technol. 2021 Apr;326:124754. doi: 10.1016/j.biortech.2021.124754. Epub 2021 Jan 24.
To support smart city in terms of municipal waste management and bioenergy recovery, a high-solid anaerobic membrane bioreactor (AnMBR) was developed for sewage sludge (SeS) and food waste (FW) treatment in this study. COD mass balance showed that 54.1%, 66.9%, 73.5%, 91.4% and 93.5% of the COD input was converted into methane at the FW ratio of 0, 25%, 50%, 75% and 100%, respectively. The corresponding net energy balance was 13.6, 14.1, 17.1, 22.9 and 27.4 kJ/g-VS, respectively. An important finding of this investigation was that, for the first time, the relationship between net energy balance and carbon to nitrogen (C/N) ratio was revealed and the established sigmoid-type function was shown to be capable of predicting energy balance at different C/N ratios regardless of the region. The outcomes of this study show the potential of high-solid AnMBRs in SeS and FW treatment for supporting smart cities in the future.
为了支持智慧城市在市政废物管理和生物能源回收方面的发展，本研究开发了一种高固体厌氧膜生物反应器（AnMBR），用于处理污水污泥（SeS）和食物垃圾（FW）。COD 质量平衡表明，在 FW 比例分别为 0、25%、50%、75%和 100%时，COD 输入的 54.1%、66.9%、73.5%、91.4%和 93.5%分别转化为甲烷。相应的净能量平衡分别为 13.6、14.1、17.1、22.9 和 27.4 kJ/g-VS。本研究的一个重要发现是，首次揭示了净能量平衡与碳氮比（C/N）之间的关系，所建立的 S 型函数能够预测不同 C/N 比下的能量平衡，而与区域无关。本研究的结果表明，高固体 AnMBR 具有在未来支持智慧城市的 SeS 和 FW 处理方面的潜力。
