农业废弃物厌氧干发酵技术研究进展
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河北省重点研发计划项目(18273811D)


Research progress in anaerobic dry fermentation of agricultural waste
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    摘要:

    中国是农业大国,农业废弃物产生量逐年增加,但资源化利用率较低。厌氧干发酵技术主要用于处理总固形物质含量在20%~40%(质量分数)之间的固态有机物,是农业废弃物资源化利用的有效途径,具有用水量少、容积产气率高等优点。由于较高的含固率,厌氧干发酵技术还存在反应器启动慢、物料搅拌困难、传热传质差等问题。厌氧干发酵装置的创新与工艺参数的优化直接关系到该技术的进一步推广与应用。通过比较典型的序批式和连续式厌氧干发酵反应器的运行特点,分析主要工艺参数对厌氧干发酵运行过程的影响,综述了近年来国内外厌氧干发酵技术的研究和应用现状,提出了当前厌氧干发酵技术存在的不足,并在技术装备和工艺研究方面对该技术未来的发展趋势进行了展望:开发厌氧干发酵装置中关键环节的设计方法;开展沼渣流变特性、微生物动态变化等深层次机理方面的研究。

    Abstract:

    China is a major agricultural country, and the production of agricultural waste is increasing year by year. However, the utilization rate of resources is still low. Anaerobic dry fermentation technology is mainly used to treat solid organic matter with a total solid content of 20%~40%(wt). It is an effective way to recycle agricultural waste resources, which has the advantages of low water consumption and high volumetric gas production rate. Due to the high solid content, there are still some problems in the anaerobic dry fermentation technology, such as slower reactor start-up, difficulty in mixing materials, and poor heat and mass transfer. Therefore, the innovation of anaerobic dry fermentation equipment and optimization of process parameters will directly affect the further promotion and application of this technology. The research and application status of anaerobic dry fermentation technology at home and abroad in recent years were summarized, the operating characteristics of typical batch and continuous anaerobic dry fermentation reactors were compared, and the effects of main process parameters on anaerobic dry fermentation were analyzed. The shortcomings of the current anaerobic dry fermentation technology were presented, and the future development trend of the technology was prospected in terms of technical equipment and process research, which is to develop design methods for key links in anaerobic dry fermentation equipment, and to carry out in-depth research on mechanisms, such as biogas residue rheological properties and microbial dynamic changes, etc.

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陈润璐,李再兴,冯 晶,姚宗路,罗 娟,赵立欣.农业废弃物厌氧干发酵技术研究进展[J].河北科技大学学报,2020,41(4):365-373

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  • 收稿日期:2020-03-03
  • 最后修改日期:2020-07-24
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  • 在线发布日期: 2020-08-29
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