Change of physical and chemical properties of dredged sludge with repeat of drying and wetting
2016
Nishimura, S. (Okayama University, Okayama (Japan). Graduate School of Environmental and Life Science) | Yoshida, M. | Okubo, K. | Shuku, T. | Shibata, T.
This report deals with the dredged sludge from the farm ponds, and the fundamental properties are clarified to promote the use of the sludge for the agricultural use. Particularly, the change of the chemical and physical properties with the desiccation is discussed. The previous works including authors' works already have clarified the property change with desiccation, while, in this report, the more variety of factors are examined, namely, the repeat of the desiccating and wetting, and several drying temperatures are tested. Concluding remarks are as follows. The repeat of the desiccating and wetting reduces drastically the liquid limit, and the first repeat has the predominant effect. The permeability increases with desiccation, and the increase tendency is clearer with the higher temperature. The total dissolved suspension increases with the temperature.
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