Qin Hao-Jie, Ji Shenghao, Wu Ruixin, Yamamoto Yuki, Liu Yaqian, Xing Bao-Shan, Qin Yu, Li Yu-You
Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aoba, Aramaki-Aza, Sendai, Miyagi 980-8579, Japan.
Department of Frontier Sciences for Advanced Environment, Graduate School of Environmental Studies, Tohoku University, 6-6-20 Aoba, Aramaki-Aza, Sendai, Miyagi 980-8579, Japan.
Bioresour Technol. 2025 Dec;437:133105. doi: 10.1016/j.biortech.2025.133105. Epub 2025 Aug 5.
Sustainable management of sewage sludge (SewS) requires efficient strategies for energy recovery and nutrient reutilization. An anaerobic membrane bioreactor (AnMBR) and a continuous stirred tank reactor (CSTR) were operated to evaluate the advantages of membrane-integrated systems in SewS management. The AnMBR achieved a methane yield of 313.5 mL-CH/g-VS, which was 11.3% higher than that of the CSTR, attributed to the extended sludge retention time facilitated by membrane-induced biomass retention. The AnMBR also enhanced the potential for resource recovery by accumulating agricultural nutrients, with 817 g/t-SewS of NH-N and 395 g/t-SewS of Total Phosphorus retained in the permeate and filtrate-representing 40.4% and 10.6% increases compared to CSTR. The AnMBR-digested sludge saved 65.1% flocculant for dewatering. With a higher exergy efficiency (11.8% vs. 10.6% for the CSTR), the AnMBR exhibited feasibility for resource recovery, suggesting its applicability for integrated SewS management.
污水污泥的可持续管理（SewS）需要高效的能量回收和养分再利用策略。运行了一个厌氧膜生物反应器（AnMBR）和一个连续搅拌槽式反应器（CSTR），以评估膜集成系统在污水污泥管理中的优势。AnMBR的甲烷产量达到313.5 mL-CH/g-VS，比CSTR高11.3%，这归因于膜诱导的生物量保留所促进的延长的污泥停留时间。AnMBR还通过积累农业养分增强了资源回收潜力，渗透液和滤液中保留了817 g/t-SewS的NH-N和395 g/t-SewS的总磷，与CSTR相比分别增加了40.4%和10.6%。AnMBR消化的污泥在脱水时节省了65.1%的絮凝剂。AnMBR具有更高的火用效率（CSTR为10.6%，AnMBR为11.8%），展现了资源回收的可行性，表明其适用于污水污泥的综合管理。
