CANON工艺处理实际晚期垃圾渗滤液的启动实验  

Start-up and characterization of nitrogen and COD removal from mature landfill leachate via CANON process

作　　者：张方斋 王淑莹[1] 彭永臻[1] 苗蕾[1] 曹天昊[1] 王众[1] 

机构地区：[1]北京工业大学北京市污水脱氮除磷处理与过程控制工程技术研究中心,北京市水质科学与水环境恢复工程重点实验室,北京100124

出　　处：《化工学报》2016年第9期3910-3918,共9页CIESC Journal

基　　金：国家水体污染控制与治理科技重大专项(2015ZX07218001);北京市教委资助项目~~

摘　　要：针对晚期垃圾渗滤液NH^+_4-N浓度高、C/N低、深度脱氮困难的问题,采用CANON工艺在曝气/缺氧搅拌循环交替的运行方式下,处理晚期垃圾渗滤液实现了深度脱氮。系统经过130 d的驯化培养后成功启动,长期试验研究结果表明,在进水COD、NH^+_4-N、TN浓度(mg·L^(-1))分别为2050±250、1625±75和2005±352情况下,出水COD、NH^+_4-N、TN浓度(mg·L^(-1))能达到407±14、8±4和19±4,总氮去除率达到了98.76%。在未投加外碳源的情况下,CANON工艺在曝气/缺氧搅拌的运行方式下实现了对晚期垃圾渗滤液的深度脱氮。此外,经荧光原位杂交(FISH)检测表明,在该运行方式下能够成功富集氨氧化菌和厌氧氨氧化菌,各占总菌数的19.5%±1.3%和42.7%±5.02%,为CANON工艺用于处理晚期垃圾渗滤液的工程应用提供参考。The mature landfill leachate from sanitary landfill is difficult to treat because of complicated composition, high concentration of ammonia and low C/N. During this study, a CANON（completely autotrophic nitrogen removal over nitrite） process with an intermittent aeration/anaerobic mixing operational mode was applied to remove nitrogen from mature landfill leachate. After domestication of 130 d, the system was stable with the effluent COD, NH~＋_4-N and TN（mg·L^（-1）） of 407±14, 8±4 and 19±4 when the influent COD, NH~＋_4-N and TN（mg·L^（-1）） were 2050±250, 1625±75 and 2005±352, respectively. Nitrogen removal from mature landfill leachate could be realized via intermittent aeration/anaerobic mixing CANON process with 98.76% of total nitrogen removal efficiency. Besides, the FISH（Fluorescence in situ hybridization） results showed that under this operational mode, both aerobic ammonium oxidation bacteria and anaerobic ammonium oxidizing bacteria accounted for 19.5%±1.3% and 42.7%±5.02%, respectively, which provided a reference for CANON treating mature landfill leachate in engineering application.

关 键 词：垃圾渗滤液 CANON 曝气/缺氧搅拌 短程硝化 厌氧氨氧化 厌氧氨氧化菌 

分 类 号：X703[环境科学与工程—环境工程]