在用于厨房垃圾处理的膜覆盖有氧堆肥过程中,气的保留和排放
Fei Li1, Qingbin Yuan1,2, Meng Li1
1College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, People's Republic of China.
Environmental technology
|August 24, 2023
概括
覆盖膜的厨房废物的有氧化堆肥改善了堆肥质量,并大大减少了氨 (NH3) 和氧化 (N2O) 的排放. 这种方法增强了气保留,是可持续的废物管理策略.
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:
- 厨房垃圾堆肥对于可持续的废物管理至关重要.
- 空气堆肥可以导致大量的气损失和气体排放 (NH3,N2O).
- 目前正在探索膜覆盖,以提高堆肥效率和减少排放.
研究的目的:
- 通过使用覆盖膜的有氧堆肥来研究厨房废物的堆肥性能.
- 在膜覆盖下分析转化和气体排放 (NH3,N2O).
- 评估膜覆盖对堆肥质量和微生物群落的影响.
主要方法:
- 覆盖膜的厨房废物的有氧堆肥.
- 测量温度,水分含量和气体排放 (NH3,N2O).
- 种子发芽指数测试用于堆肥质量.
- 有限元建模用于分析凝结水层.
- 细菌和氨氧化微生物群落的分析.
主要成果:
- 堆肥产品表现出高种子发芽指数 (∼180%).
- 膜覆盖使早期冷却阶段的温度提高了4.5°C,降低了湿度,并保留了7.9%的.
- 由于凝结水吸附,NH3排放减少了48.5%;由于微正压力提高了氧气分布,N2O排放减少了44.1%.
- 细菌群体的多样性减少,而氨氧化菌株增加.
结论:
- 覆盖膜的有氧堆肥对于厨房废物管理是有效的.
- 这种方法显著减轻了氨 (NH3) 和氧化 (N2O) 的排放.
- 该技术提高了堆肥质量和气保留,提供了可持续的废物处理解决方案.
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