剩余污泥厌氧共消化技术研究现状及应用趋势

发布时间：2018-11-05 12:23

【摘要】：污水处理厂碳中和运行目标使得剩余污泥厌氧消化产CH4途径重获新生。然而,剩余污泥量取决于进水中有机物(COD)浓度,而我国污水碳源低的特点决定了不可能仅靠剩余污泥转化能源便完全满足碳中和运行目标。研究显示,多种外源有机废弃物与剩余污泥厌氧共消化可以取得"1+12"的能量转化效果,这就为我国污水处理厂碳中和运行提供了一种潜在能量来源。在简述剩余污泥厌氧共消化技术特性的基础上,对7种典型外源有机废弃物与剩余污泥共消化试验研究进行了归纳,同时列举国外6个业已实现碳中和运行的污水处理厂共消化应用实例,充分说明外源有机废弃物与剩余污泥共消化的工程应用前景。虽然我国目前环境政策限制了污泥厌氧共消化的工程化进程,但污泥与餐厨垃圾、市政修剪花草/树木、旱厕粪便等几种基质共消化将会是共消化的未来研究方向,更是综合解决市政有机固体废弃物的现实需要。
[Abstract]:The target of carbon neutralization in sewage treatment plant resuscitated the process of anaerobic digestion of excess sludge to produce CH4. However, the amount of excess sludge depends on the concentration of organic matter (COD) in the influent, and the low carbon source of sewage in China makes it impossible to completely meet the target of carbon neutralization operation by converting energy from surplus sludge. The results show that "112" energy conversion can be achieved by anaerobic co-digestion of organic waste and excess sludge, which provides a potential energy source for carbon neutralization operation of sewage treatment plants in China. On the basis of brief introduction to the characteristics of anaerobic co-digestion of excess sludge, the experimental research on co-digestion of seven typical exogenous organic wastes with excess sludge was summarized. At the same time, six examples of co-digestion of sewage treatment plants with carbon neutralization operation abroad are listed, which fully illustrate the engineering application prospect of co-digestion of exogenous organic waste and excess sludge. Although the current environmental policy of our country limits the engineering process of anaerobic co-digestion of sludge, the co-digestion of sludge with kitchen waste, municipal pruning of plants / trees, excrement of aqua latrines and other substrates will be the future research direction of co-digestion. It is also a comprehensive solution to the actual needs of municipal organic solid waste.
【作者单位】：北京建筑大学城市雨水系统与水环境省部共建教育部重点实验室;
【基金】：北京市科研基地建设-节能减排协同创新中心专项(2015) 北京应对气候变化研究与人才培养基地专项(2015)
【分类号】：X703.1

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