CANON工艺处理实际晚期垃圾渗滤液的启动实验

发布时间：2018-01-02 11:17

本文关键词：CANON工艺处理实际晚期垃圾渗滤液的启动实验　出处：《化工学报》2016年09期 　论文类型：期刊论文

【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。
[Abstract]:For advanced landfill leachate with high NH~+_4-N concentration, low C/N, nitrogen removal difficult problem in aeration / anoxic mixing operation cycles by CANON process, old landfill leachate achieved advanced nitrogen removal system. After acclimation of 130 d after the successful launch, the long-term test results show that in NH~+_4-N the water of COD, the concentration of TN (mg L~ (-1)) were 2050 + 2501625 + 75 and 2005 + 352, the effluent COD, NH~+_4-N, TN concentration (mg L~ (-1)) can reach 407 + 14,8 + 4 and 19 + 4, total nitrogen removal rate reached 98.76%. in the adding external carbon source, CANON process in the aeration / anoxic mode mixing under the implementation of advanced landfill leachate nitrogen removal. In addition, by fluorescence in situ hybridization (FISH) assay showed that, under the operation successful enrichment of ammonia oxidizing bacteria and anammox bacteria, the total the number of bacteria in the 19.5% + 1 .3% and 42.7% + 5.02% provide reference for the application of CANON technology in the engineering application of advanced landfill leachate.

【作者单位】：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;
【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~~
【分类号】：X703
【正文快照】： ammonium oxidizing bacteria引言近年来,垃圾填埋是我国大多数城市解决生活垃圾的最主要方法,85%的城市生活垃圾采用卫生填埋处理[1]。其主要缺点就是产生大量的垃圾渗滤液,垃圾渗滤液是一种成分复杂的高浓度有机废水,含有大量的4NH-N+和有机物[2]。目前生物脱氮工艺是最常用

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