Addition of large amount of municipal sewage sludge as raw material in cement clinker production

Two addition modes were used to explore the maximum addition of municipal sewage sludge as a raw material in cement clinker production. The clinker and cement product quality were determined by chemical analysis, cement quality testing, characterization of the clinker crystalline phases, and leachin...

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Bibliographic Details
Published in:Environmental science and pollution research international 2017-12, Vol.24 (36), p.27862-27869
Main Authors: Huang, Minrui, Feng, Huajun, Li, Na, Shen, Dongsheng, Zhou, Yuyang, Jia, Yufeng
Format: Article
Language:English
Subjects:
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Cement
Cements
Chemical analysis
Clinker
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Environmental science
Heavy metals
Leaching
Metal concentrations
Municipal wastes
Municipal wastewater
Research Article
Sewage disposal
Sewage sludge
Sludge
Waste Water Technology
Water Management
Water Pollution Control
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Summary:Two addition modes were used to explore the maximum addition of municipal sewage sludge as a raw material in cement clinker production. The clinker and cement product quality were determined by chemical analysis, cement quality testing, characterization of the clinker crystalline phases, and leaching tests. Municipal sewage sludge addition in the raw mix could be up to 30% based on the cement clinker moduli, and the cement quality met the P.O 42.5 cement standard (GB 175-2007). The amount of municipal sewage sludge added based on the direct addition mode should be less than 15% because of an insufficient early-term cement strength (third day). The leaching concentrations of heavy metals in all cements were below the threshold (GB 30760-2014) using the latest leaching procedure (GB 30810-2014). The municipal sewage sludge could be used with a high addition (30%) in the raw mix as a raw material in cement clinker production.
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-017-9949-6