| abstract |
[PROBLEMS] To provide a simple and low-cost soil remediation system capable of classifying gravel, sand and fine particles while washing soil with washing water, while reducing harmful metals adsorbed on the fine particles. To do. A soil purification system (S) includes soil classification units (1-8) and an iron removal device (12). The soil classification units 1 to 8 crush the gravel and sand in the soil with the mill breaker 3 while washing the soil with washing water, and then use the trummel 4, cyclone 5 and thickener 8 to remove the gravel, sand and fine particles. And classify. The iron removing device 12 adsorbs and removes iron-based fine particles containing iron or the like by magnetic force from the sludge containing fine particles separated by the thickener 8 by the magnet mounting drum and washing water, thereby removing sludge. Reduce the content of harmful metals. [Selection] Figure 1 |