A novel hybrid airlift bioreactor (HALBR) for simultaneous carbon and nitrogen removal from composting leachate was studied. In contrast to conventional airlift bioreactors, an anaerobic chamber was mounted at the bottom part to improve biodegradability of composting leachate and optimize overall COD removal. Desired aerobic and anoxic conditions provided by airlift configuration and oxygen concentration gradients within the biofilm increased the capability of system for TN removal through SND. Three independent variables, hydraulic retention time (HRT) (18-30 h), air flow rate (AFR) (1-2 L_air/min), and aerobic volume ratio (AVR) (0.22-0.26) were evaluated as operating parameters. The optimum conditions were an HRT of 28.3-30 h and AFR of 1.7-2 Lair/min, giving 3600 mg/L (90%) of COD and 598.4 mg/L (80%) of TN removal, respectively with an effluent turbidity less than 70 NTU. The outcomes demonstrated that this innovative single HALBR is a feasible and reliable technology for treatment of composting leachate.

研究了一种新型混合空运生物反应器（HALBR），用于同时从堆肥渗滤液中去除碳和氮。与传统的空运生物反应器相比，厌氧室安装在底部，以提高堆肥渗滤液的生物降解能力并优化整体COD去除率。由空运配置和生物膜内的氧气浓度梯度提供的所需有氧和缺氧条件提高了系统通过SND去除TN的能力。三个独立变量，水力停留时间（HRT）（18-30 h），空气流量（AFR）（1-2 L_空气/ min）和有氧体积比（AVR）（0.22-0.26）作为操作参数进行评估。最佳条件是HRT为28.3-30 h，AFR为1.7-2 Lair / min，分别去除3600 mg / L（90％）的COD和598.4 mg / L（80％）的TN，并具有出水浊度少于70 NTU。结果表明，这种创新的单一HALBR是一种用于处理堆肥渗滤液的可行且可靠的技术。