In order to eliminate the weak degradation ability of organic matter in sludge treatment wetland (STW). In current work, a combined biological power generation and earthworm assisted sludge treatment wetland (BE-STW) system is proposed for the first time to accelerate degradation and dehydration process of organics in STW, thusly, recovering biomass energy in sludge. Experimental results show that S₄ system (earthworm and bioelectricity combined) yields a voltage of 0.832 V and maximum power density of 94.98 W/m² in the 5th day. The combination of earthworm, microorganism and plants in STW system can reduce the ratio of volatile solids to total solids (VS/TS) to 15% while the removal rate of total chemical oxygen demand (TCOD) reaches 92.1%. The BE-STW system increases sludge particle size while reduces absolute value of Zeta and extracellular polymeric substances (EPS) content, so that the moisture content of effluent sludge retains to 66.8%. Meanwhile, the richness of bacterial communities in S₄ proves that bioelectrochemistry and earthworm can effectively improve the sludge treatment effect.

为了消除污泥处理湿地（STW）中有机物的弱降解能力。在目前的工作中，首次提出了生物发电和assist辅助污泥处理湿地（BE-STW）的组合系统，以加速污水处理厂中有机物的降解和脱水过程，从而回收污泥中的生物质能。实验结果表明，S ₄系统（worm和生物电相结合）产生的电压为0.832 V，最大功率密度为94.98 W / m ^2。在第5天。STW系统中and，微生物和植物的结合可以将挥发性固体占总固体的比率（VS / TS）降低至15％，而总化学需氧量（TCOD）的去除率达到92.1％。BE-STW系统增加了污泥的粒径，同时降低了Zeta的绝对值和细胞外聚合物质（EPS）的含量，因此出水污泥的水分含量保持在66.8％。同时，S ₄中细菌群落的丰富性证明了生物电化学和worm可以有效提高污泥的处理效果。