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Updated: Jun 5, 2025

Evaluation of Integrated Anaerobic Digestion and Hydrothermal Carbonization for Bioenergy Production

Evaluation of Integrated Anaerobic Digestion and Hydrothermal Carbonization for Bioenergy Production

Published on: June 15, 2014

整合水热碳化和化学液,从污水污泥中回收生物碳

A Salimbeni¹, H Demey²

¹Renewable Energy Consortium for Research and Demonstration, Viale Kennedy 182, 50038, Scarperia e San Piero, Fi, Italy; University of Florence, Department of Industrial Engineering, Via di S. Marta, 3, 50139, Firenze, FI, Italy.

Journal of environmental management

|December 16, 2024

概括

水热碳化 (HTC) 和化学水将污水污泥转化为钢铁制造的煤炭替代品. 这一过程减少了灰含量,并提取了有价值的无机化合物,提供了可持续的废物回收利用途径.

科学领域:

环境化学环境化学
化学工程是化学工程的重要组成部分.
材料科学材料科学材料科学

背景情况:

污水污泥 (SS) 是废水处理的主要副产品,造成处理挑战.
石灰含有大量的生物碳,但由于高湿度和灰含量阻碍了其利用.
目前的污泥管理通常涉及能源密集的干燥或填埋,缺乏可持续的解决方案.

研究的目的:

评估水热碳化 (HTC) 作为传统污泥干燥的可持续替代方案.
调查HTC与用于污水污泥价值化的化学漏的整合.
制造化 (LHC),适用于钢铁制造中的煤炭替代品,并提取无机化合物.

主要方法:

在20分钟和120分钟的时间内,在180至270°C的温度下,对污水污泥进行了7次HTC测试.
随后,用70°C的酸 (HNO3) 在1小时内水.
由此产生的化 (LHC) 分析了作为减少剂的组成,稳定性和性能.

主要成果:

HTC的平均固体质量产率为62%,居住时间的影响最小.
洗将灰含量降低了50%,实现了P和Ca的提取率高于95%,Fe的提取率高于80%.
在燃气化过程中,LHC表现出增强的稳定性和高炉中40%的化石煤的替代潜力.

结论:

HTC与化学漏相结合,为污水污泥的价值化提供了一个可行的途径.
产生的LHC是钢铁制造中化石煤的有希望的替代品,提高了工艺效率和可持续性.
这种综合方法促进了资源回收,并减少了污水污泥管理对环境的负担.

关键词:

碳碳碳碳碳碳煤炭是一种煤炭.热水碳化碳化是一种热水碳化过程.泄漏泄漏是一种泄漏.是一种的物质.污水污泥的污水污泥是污水中的污泥.

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