优化MSW焚烧底灰再利用:一项关于处理废水冲洗和漏控制的研究
Deepesh Bansal1, Garima Gupta1, G V Ramana1
1Department of Civil Engineering, Indian Institute of Technology Delhi, New Delhi 110016, India.
Waste management (New York, N.Y.)
|April 23, 2024
概括
处理废水的洗和选有效地减少了焚烧底灰 (IBA) 中的污染物. 这种多步骤的过程使IBA适合重复使用,促进循环经济原则和可持续废物管理.
科学领域:
- 环境工程 环境工程
- 材料科学 材料科学 材料科学
- 废物管理 废物管理
背景情况:
- 焚烧底灰 (IBA) 的再利用受到化物,硫酸盐和微量金属的浸出限制.
- 处理废水 (TWW) 为IBA处理提供了潜在的洗剂.
- 循环经济原则鼓励再利用废物产生的材料.
研究的目的:
- 调查TWW洗和选在增强IBA属性的有效性,以便不受限制地重复使用.
- 优化多步处理过程,以减少IBA分数中的污染物.
- 评估经过处理的IBA作为可持续的二次材料的潜力.
主要方法:
- 从废水处理厂利用处理废水 (TWW) 作为IBA的洗剂.
- 在IBA分数 (SLM <4.75 mm,OM <3.5 mm) 上,探索了各种洗和选 (去除细分<0.15 mm) 的组合.
- 进行批量漏试验,并根据荷兰无限制IBA重复使用标准对结果进行评估.
主要成果:
- 单纯的洗是不够的;洗与选 (去除罚款) 相结合,有效地减少了污染.
- 一个多步骤的洗和选过程 (液体与固体的比率为6L/kg,总洗时间为15分钟) 使OM和SLM分量适合不受限制的重复使用.
- 硫酸盐污染减少了65-74%,化物污染减少了83-89%.
结论:
- 多步骤的TWW洗和选过程是克服IBA漏局限性的可行方法.
- 这种方法增强了IBA无限制重复使用的特性,支持可持续废物管理和循环经济目标.
- 经过处理的IBA在各种应用中显示出作为一种有价值的二次材料的潜力.
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