城市生物质废弃物干法厌氧消化实验研究

发布时间：2018-01-01 15:17

本文关键词：城市生物质废弃物干法厌氧消化实验研究　出处：《华中科技大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着我国生活垃圾产生量不断增加和化石能源等的不断消耗,探索适合我国生活垃圾资源化和能源化的技术具有重大的意义。厌氧发酵作为一种减量化、资源化处理生物质废弃物的技术,在处理生活垃圾的同时可以产生能源气体甲烷。干法厌氧发酵技术在处理城市生活垃圾方面有很大的应用潜力。本文在综合分析国内外干法厌氧发酵技术的基础上,利用两套厌氧消化中试装置,对城市生物质废弃物进行了两批次的干法厌氧发酵实验。根据产气速率和产气量以及沼液中各个指标随发酵时间的变化情况,分析了干法厌氧发酵中发酵原料、碳氮比、pH值、温度、接种物和接种量以及搅拌方式等因素对干法厌氧消化反应的影响。本论文主要研究以下方面:(1)启动阶段采用厌氧污泥和猪粪为接种物,对比接种物性质和接种量对启动阶段的影响。(2)产气过程中分析产气速率和甲烷浓度、硫化氢浓度等指标的变化规律,研究干法厌氧发酵产气特性。(3)实验过程中对回灌频率、渗滤液添加量、pH值和温度等参数进行调控,提高产气效率。(4)定期对沼气、沼液和最终发酵残渣进行分析,定量描述发酵反应过程中物质的形态和浓度以及发酵结束后有机物的转化率。
[Abstract]:With the garbage in China is increasing and the growing consumption of fossil energy, it is of great significance to explore suitable for China's domestic waste resources and energy of the anaerobic fermentation technology. As a kind of reduction, resource processing technology of biomass waste, methane gas can produce energy at the same time dealing with the living garbage anaerobic. Dry fermentation technology has great potential in the treatment of city garbage. Based on the domestic and foreign dry anaerobic fermentation technology on the comprehensive analysis, the test device two sets of anaerobic digestion, the dry anaerobic fermentation experiment of two batches of raw material city waste. According to the changes of each index of gas production rate and gas production and the slurry with fermentation time, analysis of the fermentation of dry anaerobic fermentation, carbon nitrogen ratio, pH value, temperature, inoculum and inoculation amount and stirring party Influence of other factors on dry anaerobic digestion reaction. This paper mainly studies the following aspects: (1) start by anaerobic sludge and pig manure as inoculum, comparison of the effects of inoculum and inoculation amount on the properties of the start-up phase. (2) during the process of gas production of gas production rate and methane concentration, variation of concentration of hydrogen sulfide study on gas production index, dry anaerobic fermentation characteristics. (3) during the experiment of recirculation frequency, infiltration amount of filtrate, the parameter pH value and temperature regulation, improve the efficiency of gas production. (4) on a regular basis, biogas, biogas slurry and final fermentation residue analysis, quantitative description of transformation of organic matter the rate of reaction in the process of fermentation material form and concentration and after fermentation.

【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X799.3

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