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Production of Lightweight Aggregates from Sewage Sludge and Dredged Sediment


Affiliations
1 School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan, 430023, China
 

In order to solve disposal problems of solid wastes, sewage sludge from wastewater treatment plants was mixed with dredged sediment to be recycled into lightweight aggregate through sintering process. The effect of sintering temperature, sintering time and mass ratio of sewage sludge to dredged sediment on characteristics of the aggregate were investigated to optimize the lightweight aggregate production process. Experimental results show that the optimal sintering temperature and time were 1150°C and 10 min respectively, and the optimal mass ratio of sewage sludge to dredged sediment was 7:3. It is concluded that sintering temperature and time, and sewage sludge/dredged sediment have a significant effect on the characteristics of lightweight aggregate.

Keywords

Sewage Sludge, Dreged Sediment, Lightweight Aggregate.
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  • Production of Lightweight Aggregates from Sewage Sludge and Dredged Sediment

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Authors

Wei Na
School of Civil Engineering and Architecture, Wuhan Polytechnic University, Wuhan, 430023, China

Abstract


In order to solve disposal problems of solid wastes, sewage sludge from wastewater treatment plants was mixed with dredged sediment to be recycled into lightweight aggregate through sintering process. The effect of sintering temperature, sintering time and mass ratio of sewage sludge to dredged sediment on characteristics of the aggregate were investigated to optimize the lightweight aggregate production process. Experimental results show that the optimal sintering temperature and time were 1150°C and 10 min respectively, and the optimal mass ratio of sewage sludge to dredged sediment was 7:3. It is concluded that sintering temperature and time, and sewage sludge/dredged sediment have a significant effect on the characteristics of lightweight aggregate.

Keywords


Sewage Sludge, Dreged Sediment, Lightweight Aggregate.

References