试点规模的食品废弃物的覆盖膜堆肥:初始水分,成熟的堆肥添加,通风时间和速率
Fei Wang1, Ting Pan1, Dafang Fu1
1School of Civil Engineering, Southeast University, Nanjing 211189, China.
The Science of the total environment
|March 21, 2024
概括
优化食品废弃物的膜覆盖堆肥 (MCC) 需要平衡初始水分和通风. 最初的混合物湿度显著影响温度和湿度,而通风率是减少堆肥过程中营养损失的关键.
科学领域:
- 环境科学 环境科学
- 废物管理 废物管理
- 土壤科学 土壤科学
背景情况:
- 食品废弃物是一个重大的处理挑战.
- 堆肥是一种可持续的有机废物管理方法.
- 覆盖膜的堆肥 (MCC) 为高效的食品废物处理提供了潜力.
研究的目的:
- 评估操作参数对食品废物堆肥效率和质量的影响,使用MCC.
- 为了确定最大限度地提高堆肥温度,最大限度地减少湿度和减少营养损失的最佳条件.
- 为了确定特定参数对堆肥成熟度,pH值,电导率和发芽指数的影响.
主要方法:
- 试点规模的食品废物的膜覆盖堆肥 (MCC).
- 正角实验设计评估了四个因素:初始混合物湿度 (IMM),通风时间 (AT),通风速率 (AR) 和成熟堆肥添加率 (MC).
- 分析堆肥温度,湿度,碳/损失,成熟度,pH值,电导率和发芽指数.
主要成果:
- 高温和低湿度的最佳条件:55%的IMM,6小时/天的AT,0.4 m3/h的AR,4%的MC. IMM是主要的驱动力.
- 降低碳和损失的最佳条件:65%的IMM,6小时/天的AT,0.4 m3/h的AR,2%的MC. 实际上,AR影响最大.
- 堆肥成熟的最佳条件:55%的IMM,9小时/天的AT,0.2 m3/h的AR,6%的MC.
- AR影响pH和电导率;IMM影响发芽指数. 蛋白质有限的堆肥效率.
结论:
- 最初的混合物湿度是控制食品废弃物堆肥温度和水分含量的关键因素.
- 空气化速度在减少堆肥过程中的营养损失方面起着至关重要的作用.
- 了解这些参数的影响可以指导MCC技术的应用,以有效地管理有机固体废物.
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