厌氧序批式反应器预处理垃圾渗滤液的碳平衡研究

Carbon Balance of the Landfill Leachate Pretreatment Technology Using Anaerobic Sequencing Batch Reactor

为初步了解垃圾渗滤液中有机物降解过程的物质和能量转化,对渗滤液实际处理工程提供借鉴,在最优工艺参数条件下,分别用处于中温(35±1)℃和常温状态的厌氧序批式反应器(ASBR)对垃圾渗滤液进行预处理。通过对反应器内的液相、气相和固相碳素进行全面的分析测定,结果表明:中温(常温)条件下,整个反应周期内约有86.4%(77.6%)的碳进入气相,约有1.7%(1.4%)的碳进入固相,其余约11.7%(22.3%)的碳仍存于液相中;其中,进入气相部分的碳有77.6%(71.3%)以甲烷形式存在,8.8%(4.7%)以二氧化碳形式存在,这说明ASBR预处理垃圾渗滤液过程中产生的甲烷资源化利用潜力较大。另外,反应器在中温状态下较常温状态处理效果更佳。

In order to have a general knowledge of the material and energy conversion in the degradation process of organic pollutants, and provide reference for the actual engineering of leaehate treatment, landfill leachate was pretreated at normal temperature and moderated temperature respectively using ASBR technology in the situation of the optimum process parameters. Carbon consist in liquidoid gaseous phase and solidoid had a comprehensive analysis determination respectively, the results demonstrated that about 86.4%（77.6%）carbon entered into gaseous phase, about 1.7%（ 1.4%）carbon entered into solidoid, the other 11.7%（22.3% ）stayed in liquidoid in a reaction period at the state of moderated temperature（normal temperature）. And about 77.6%（71.3%）of the carbon entered into gaseous was in the form of methane exist,8.8%（4.7%）of the carbon entered into gaseous was in the form of carbon dioxide, which explained that there had a good recycle utilization potential of methane produced in the process of leachate pretreatment using ASBR. In addition, the processing effect at moderated temoerature was better than at normal temperature.