蚯蚓堆肥处理校园有机垃圾的热解特性及物质转化特征

薛梓涛; 储雪飞; 邢丽波; 孙晓杰; 邢美燕

doi:10.13205/j.hjgc.202306012

蚯蚓堆肥处理校园有机垃圾的热解特性及物质转化特征

doi: 10.13205/j.hjgc.202306012

1. 同济大学长江水环境教育部重点实验室, 上海 200092;
2. 上海市政工程设计研究总院(集团)有限公司, 上海 200082;
3. 桂林理工大学广西环境污染控制理论与技术重点实验室, 广西桂林 541004

基金项目:

同济大学"双带头人"学术能力提升计划（0400219423）

详细信息

作者简介:
薛梓涛(1998-),男,硕士研究生,主要研究方向为污水污泥生物生态处理技术。xzt19980615@163.com

通讯作者:
邢美燕(1977-),女,副教授,主要研究方向为污水污泥生物生态处理技术。xingmeiyan@tongji.edu.cn

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出版历程
- 收稿日期: 2022-06-05
- 网络出版日期: 2023-09-02

PYROLYSIS CHARACTERISTICS AND MATERIAL TRANSFORMATION CHARACTERISTICS OF CAMPUS ORGANIC WASTE TREATED BY VERMICOMPOSTING

1. Key Laboratory of Yangtze River Water Environment, Ministry of Education, Tongji University, Shanghai 200092, China;
2. Shanghai Municipal Engineering Design Institute (Group) Co., Ltd., Shanghai 200082, China;
3. Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology, Guilin University of Technology, Guilin 541004, China

摘要

摘要: 以校园餐厨垃圾为主要原料，校园绿化垃圾、废纸、锯末为调理剂，利用热重、荧光、红外等技术探讨了校园有机垃圾蚯蚓堆肥就地处理的热稳定性和物质转化特征。结果表明：将餐厨垃圾、树叶、废纸以1：1：1（干重）物料配比混合进行蚯蚓堆肥，堆肥周期较短（10周），有机物稳定化和资源化效果较好；热重分析表明：堆肥前后堆料失质量大幅减少，由71.44%降低至41.44%，堆体的稳定性增强。通过动力学模型计算发现，堆肥后该处理组的活化能降低了6.163 kJ/mol，三者组合堆肥加快了堆肥进程；对DOM转化的腐殖化表征可知：堆肥后，其腐植酸含量增加了20.13%，而蛋白类物质减少了17.3%；与堆肥前相比，蚓粪中的速效氮、速效磷含量分别提高了6.54，1.82倍。校园餐厨垃圾、绿化垃圾与废纸的联合蚯蚓堆肥处理，可有效加快堆肥进程，提高有机物稳定化和资源化利用的程度，实现校园垃圾就地处理。
- 校园有机垃圾 /
- 蚯蚓堆肥 /
- 有机物转化 /
- 热解特性 /
- 腐殖化
Abstract: The thermal stability and material transformation characteristics of organic waste treated by vermicomposting were investigated with campus kitchen waste assisted by campus green waste, wasted paper and sawdust. The results indicated that vermicomposting with kitchen waste, leaves and waste paper (1:1:1, by dry weight) with a vermicomposting cycle of 10 weeks, gained better organic stabilization and resource recovery effect. Furthermore, the thermogravimetric analysis showed that the weight loss of the heap decreased from 71.44% to 41.44% after vermicomposting, and the stability of vermicompost was enhanced. Additionally, the kinetic model deduced that the activation energy of the composting group decreased by 6.163 kJ/mol after vermicomposting, indicating that the composting process was accelerated. Humic acid and protein content increased by 20.13% and 17.3% after composting. The content of available nitrogen and available phosphorus in vermicompost increased by 6.54 times and 1.82 times, respectively, after vermicomposting. The vermicomposting treatment of campus kitchen waste, green waste and waste paper effectively accelerated the composting process, improved the degree of organic stabilization and resource utilization, and has the potential in realizing onsite treatment of campus organic wastes.
- campus organic wastes /
- vermicompost /
- organic conversion /
- pyrolysis characteristics /
- humification

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