Pilot-scale and laboratory tests for efficient separation and recovery of soil-waste mixtures
Pilot-scale and laboratory tests for efficient separation and recovery of soil-waste mixtures
Enormous amounts of disaster waste have been generated by several disasters which occurred in recent years. Also, for waste management including landfill mining and rehabilitation of improper dumping, soil-waste mixtures are often encountered. For further utilization of soils recovered from such mixed wastes as geomaterials, effective separation techniques need to be developed. In this study, separability of soil-wood chips mixtures is investigated by pilot-scale and laboratory tests with a special emphasis on water and fine contents of soil fractions in the mixtures. The separability of the mixtures is worsened due to aggregation of soil-wood chips mixtures, which notably occurs near the plastic limit of soil fractions. Rotary screens can attribute to a better separability, compared to vibratory screens, probably because of better agitation and beating of materials. It was also found that drying of soil-waste mixtures is essential for efficient separation. Based on the results obtained, proper selection of screens according to the type of disaster is also suggested.
Atsushi Takai; Y. Shimizu; Tomohiro Kato; Takeshi Katsumi
9th International Congress on Environmental Geotechnics (ICEG2023)
Keynote Lectures
https://doi.org/10.53243/ICEG2023-69
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