虫堆肥作为市政污水污泥管理的有效方法,通过优化选定的过程变量来实现
Beauty Banda1, Nigus Gabbiye Habtu2, Getachew Dagnew Gebreeyessus3
1Africa Center of Excellence for Water Management, Addis Ababa University, P.O. Box 1176, Addis Ababa, Ethiopia
概括
微生物堆肥将污水污泥转化为有价值的农业肥料. 这种可持续的方法优化了营养含量 (,,) 以实现有效的废物管理和土壤丰富.
科学领域:
- 环境科学 环境科学
- 农业学是一种农业学.
- 废物管理 废物管理
背景情况:
- 发展中国家的城市污水污泥的不可持续的最终用途做法引发了严重的环境问题.
- 现有的污泥管理策略往往无法提供环保和经济可行的解决方案.
- 迫切需要可持续的方法来将污水污泥转化为有益的资源.
研究的目的:
- 研究用于农业应用的城市污水污泥单独或与其他生物废物混合的变态堆肥的可行性.
- 优化动态堆肥参数以最大限度地提高最终堆肥中的营养物质含量 (,,).
- 评估虫堆肥作为城市污水污泥可持续管理战略的潜力.
主要方法:
- 利用响应表面的方法与一个盒子-Behnken设计的过程优化.
- 优化了关键参数,包括水分含量 (60-90%),转频率 (1-3转/周) 和基板混合比率 (50:50至80:20重量%).
- 雇员设计专家软件 (版本10.0.7) 用于统计分析和优化.
主要成果:
- 在72%的水分含量,基板混合率为72.34: 27.6%的质量,以及每周2个转的转频率下,实现了最佳的形堆肥条件.
- 优化的工艺产生了高质量的混凝土,营养物质的最大度为2.76%的,1.80%的和1.88%的.
- 与传统的污泥管理方法相比,营养含量显著改善.
结论:
- 虫堆肥是一种高效和可持续的城市污水污泥管理方法.
- 该过程成功地将有问题的污泥转化为有价值的富含营养的农业投入.
- 这种方法为发展中国家的可持续废物管理和资源回收提供了一个有希望的解决方案.
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