Influence of Turning on Physicochemical Properties and Odor Emission during Composting

Abstract:

In order to study the impact of turning on physicochemical properties, oxygen supply and odor emission during composting, the physicochemical properties, oxygen, odor and volatile organic compounds concentrations before and after turning were investigated. Results showed that turning can accelerate the temperature, density and moisture decrease. Among the four times turning, the first turning influnenced pile temperature, porosity and odor emission deepest which the temperature and density decreased 16.9% and 22.2% respectively after turning than before, while the NH3 and VOCs emission were higher than 115% and 150% respectively than before. However, the forth turning effected moisture change deepest which decreased 6% than before. The other turings didn’t effect pile parameters significantly. Considering energy saving and parameter changes, it’s suggested to reduce the turning frequency. Moeover, proper measures should be adopted to controll odor spread during first turning.

• Periodical: Advanced Materials Research (Volumes 1092-1093)
• Pages: 867-873
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1092-1093.867
• Online since: March 2015
• Authors: Yu Jun Shen, Yue Qing Hou, Li Xin Zhao, Hai Bo Meng*
• Keywords: Composting, Odor, Oxygen Supply, TURN

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