To achieve efficient and simultaneous treatment and resource utilization of excess sludge and aquaculture wastewater, a sediment microbial fuel cell with algal cathode-sediment microbial fuel cell(AC-SMFC)was constructed by combining algal-bacterial symbiosis technology with sediment microbial fuel cell. A bacterial cathode-sediment microbial fuel cell(BC-SMFC)with activated sludge inoculated on the cathode was used as a control. The power generation performance, removal efficiencies of carbon, nitrogen and phosphorus, and the reduction effect of excess sludge in AC-SMFC were investigated.Results showed that the cathode potential and maximum output power density of AC-SMFC were(283.5±15.3)mV and 91.18 mW/m2, respectively. After 41 days of operation, the removal rates of chemical oxygen demand(COD), ammonia nitrogen, total nitrogen and total phosphorus in aquaculture wastewater by AC-SMFC reached- DOI:10.3969/j.issn.1000-1565.2025.05.007菌藻阴极SMFC同步处理剩余污泥及养殖废水效能研究丁陈玉,杜旺,李永琦,陈利争,张勇泉,王洪杰,李慧(河北大学 生态环境系,河北省湿地近自然修复技术重点实验室,河北 保定 071002)摘 要:为了实现剩余污泥和养殖废水的高效同步处理与资源化,将菌藻共生技术与沉积式微生物燃料电池结合构建了菌藻阴极型沉积式微生物燃料电池(algal cathode-sediment microbial fuel cell,AC-SMFC). 以阴极接种活性污泥的沉积式微生物燃料电池(baterial cathode-sediment microbial fuel cell,BC-SMFC)为对照,研究了AC-SMFC同步处理剩余污泥和养殖废水过程中的产电性能、阴极碳氮磷污染物去除效率及剩余污泥减量效果.结果表明,以剩余污泥和养殖废水分别作为底泥和上覆水时,AC-SMFC的最大输出功率密度和阴极电势分别为91.18 mW/m2和(283.5±15.3)mV.运行41 d后,AC-SMFC对养殖废水中化学需氧量、氨氮、总氮和总磷的去除率分别达到98.51%、81.63%、74.29%和65.84%,氮磷去除效果显著提升.AC-SMFC污泥减量效果显著,总化学需氧量和挥发性悬浮固体去除率分别为59.8%和68.5%.此外,AC-SMFC可促进松散结合胞外聚合物和紧密结合胞外聚合物中溶解性微生物产物、芳香族蛋白质和腐殖酸类物质的降解.关键词:养殖废水;降解;菌藻共生;微生物燃料电池;剩余污泥中图分类号:X703;TM911 文献标志码:A 文章编号:1000-1565(2025)05-0507-13Performance of the sediment microbial fuel cell with algal-bacterial cathode for simultaneous treatment of excess sludge and aquaculture wastewaterDING Chenyu, DU Wang, LI Yongqi, CHEN Lizheng, ZHANG Yongquan, WANG Hongjie, LI Hui(Hebei Key Laboratory of Close-to-Nature Restoration Technology of Wetlands, School of Eco-Environment, Hebei University, Baoding 071002, China)Abstract: To achieve efficient and simultaneous treatment and resource utilization of excess sludge and aquaculture wastewater, a sediment microbial fuel cell with algal cathode-sediment microbial fuel cell(AC-SMFC)was constructed by combining algal-bacterial symbiosis technology with sediment microbial fuel cell. A bacterial cathode-sediment microbial fuel cell(BC-SMFC)with activated sludge inoculated on the cathode was used as a control. The power generation performance, removal efficiencies of carbon, nitrogen and phosphorus, and the reduction effect of excess sludge in AC-SMFC were investigated.Results showed that the cathode potential and maximum output power density of AC-SMFC were(283.5±15.3)mV and 91.18 mW/m2, respectively. After 41 days of operation, the removal rates of chemical oxygen demand(COD), ammonia nitrogen, total nitrogen and total phosphorus in aquaculture wastewater by AC-SMFC reached- 收稿日期:2024-12-10;修改稿日期:2025-01-09 基金项目:城市水资源与水环境国家重点实验室开放课题(HC202242);河北大学多学科交叉研究计划项目(DXK202106);河北省大学生创新创业训练计划项目(S202410075086);河北大学研究生创新项目(HBU2025SS023) 第一作者:丁陈玉(2001—),男,河北大学在读硕士研究生,主要从事生物电化学污水处理技术方向研究. E-mail:18655175391@163.com 通信作者:王洪杰(1972—),男,河北大学教授,博士生导师,主要从事生态修复技术原理与应用方向研究. E-mail:wanghj@hbu.edu.cn李慧(1987—),女,河北大学副教授,主要从事污水及污泥处理与资源化方向研究. E-mail:lihuihbu@hbu.edu.cn第5期丁陈玉等:菌藻阴极SMFC同步处理剩余污泥及养殖废水效能研究河北大学学报(自然科学版) 第45卷98.51%, 81.63%, 74.29% and 65.84%, respectively,indicating a significant improvement in nitrogen and phosphorus removal. AC-SMFC showed a significant sludge reduction effect, with the removal rates of total chemical oxygen demand(TCOD)and volatile suspended solids(VSS)reaching 59.8% and 68.5%, respectively. In addition, AC-SMFC could promote the degradation of soluble microbial products, aromatic proteins and humic substances in the loosely-bound extracellular polymeric substances(LB-EPS)and tightly-bound extracellular polymeric substances(TB-EPS).
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