垃圾渗滤液具有毒性大、成分复杂、对环境危害大等特点，传统工艺路线难以对其进行有效处理，而膜分离技术具有低能耗、高效、稳定等优势，已成为渗滤液无害化处理的重要手段。将自制g-C₃N₄/TiO₂/PVDF膜搭建为膜生物反应器MBR，并设计A/O+MBR+NF/RO串联工艺对垃圾渗滤液进行深度处理。A/O+MBR单元对COD、NH₃-N和TN去除效率分别为87.84%、92.97%和89.95。纳滤对COD、NH₃-N、TN的去除率分别高达85%、60.8%、63.14%，反渗透相应的去除率分别为87.7%、73.3%、72.4%，MBR+NF+RO组合工艺处理后渗滤液中的COD、NH₃-N和TN含量分别降至16 mg/L、14 mg/L、22 mg/L，可达标排放。

Landfill leachate has the characteristics of high toxicity,complex composition and huge harm to the environment,and it is difficult to be effectively treated by traditional process routes.Membrane separation technology has the advantages of low energy consumption,high efficiency and good stability,and becomes an important means in harmless treatment of landfill leachate.A self-made g-C₃N₄/TiO₂/PVDF membrane is built into a membrane bioreactor (MBR),and an A/O+MBR+NF/RO series process is designed to conduct in-depth treatment of landfill leachate.The removal efficiencies of COD,NH₃-N and TN by A/O+MBR section reach 87.84%,92.97% and 89.95%,respectively.The removal rates of COD,NH₃-N and TN by nanofiltration (NF) section reach 85%,60.8% and 63.14%,respectively.The corresponding removal rates by reverse osmosis (RO) section are 87.7%,73.3% and 72.4%,respectively.The contents of COD,NH₃-N and TN in leachate treated by MBR+NF+RO combining process are reduced to 16 mg·L^-1,14 mg·L^-1 and 22 mg·L^-1,respectively,meeting the discharge standard.