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Open AccessCommunication

Application Status of Co-Processing Municipal Sewage Sludge in Cement Kilns in China

1
College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
2
Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
3
Key Laboratory of Yangtze River Water Environment, Ministry of Education, Shanghai 200092, China
*
Author to whom correspondence should be addressed.
Sustainability 2019, 11(12), 3315; https://doi.org/10.3390/su11123315
Received: 6 May 2019 / Revised: 11 June 2019 / Accepted: 11 June 2019 / Published: 15 June 2019
(This article belongs to the Collection Trends in Municipal Solid Waste Management)
Municipal sewage sludge (MSS) disposal is an urgent issue in China with the continuous growth of sewage treatment capacity. Among various disposal methods, co-processing of MSS in cement kilns has been one of the most promising disposal methods in recent years. The present situation of sewage treatment and sludge disposal, the development of co-processing MSS in a cement kiln, and main disposal routes in China were discussed in this study. The results indicated that China had paid considerable attention to the technology and released correlative policies in the past few years. There were about 35 co-processing projects built in China, all of which were limited by construction scale and pollutant emissions. Due to differences in construction methods and economic conditions, China’s co-processing projects mainly employed three routes—direct addition to a transition chamber, addition to a precalciner after direct thermal drying, and addition to a precalciner after indirect drying. Summarizing and analyzing the characteristics of MSS co-processing would facilitate its development in China and similar regions. View Full-Text
Keywords: municipal sewage sludge; cement kilns; co-processing; application status municipal sewage sludge; cement kilns; co-processing; application status
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MDPI and ACS Style

Xu, J.; Ping, L.; Cao, H.; Liu, W.; Gu, Y.; Lin, X.; Huang, J. Application Status of Co-Processing Municipal Sewage Sludge in Cement Kilns in China. Sustainability 2019, 11, 3315.

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