期刊
JOURNAL OF CLEANER PRODUCTION
卷 311, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jclepro.2021.127811
关键词
Thermochemical treatment; Municipal sludge; Combustion; Pyrolysis; Gasification; Hydrothermal carbonization; Hydrothermal liquefaction; Wet oxidation; Supercritical water oxidation
资金
- National Key Research and Development Program of China [2021YFE0104900]
- National Natural Science Foundation of China [22078258]
- Natural Science Basic Research Plan in Shaanxi Province of China [2019JLM21]
- Fundamental Research Funds for the Central Universities [xtr042019015, xjh012019005]
Rapid economic growth has made the disposal of municipal sludge increasingly important during urbanization acceleration. Among various thermochemical treatment methods, combustion is preferred for rapid and significant volume reduction of sludge, while other methods face challenges in system operation and technological development.
Rapid economic growth is making the disposal of municipal sludge non-negligible during the acceleration of urbanization. Thermochemical treatment has been proved to be of superiority with regard to volume reduction and product conversion of municipal sludge. This work provides a comprehensive review on thermochemical treatment methods of municipal sludge, including combustion, pyrolysis, hydrothermal carbonization, hydrothermal liquefaction, wet oxidation, supercritical water oxidation and gasification. Comparisons among these thermochemical methods are clarified from technological process, environmental risks, use of products and economic cost. Combustion, more specifically mono-incineration, is preferred for its rapid and obvious volume reduction of municipal sludge. While other methods are relatively uncompetitive now owing to difficulties on system operation and technological development. The combination of additives with atomized municipal sludge which is ejected by high-pressure air, and the coupling of different processes (e.g., pyrolysis) are potential optimization methods of combustion. Gasification provides an option for sustainable disposal of municipal sludge due to acceptable disposal costs and low environmental risks. It exhibits considerable emission decrease and energy saving effect. To compare thoroughly all treatment methods, effective evaluation like life cycle assessment methodology is necessary.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据