Quality Improvement of Granular Wastes- The Effective Way to Recycle Secondary Raw Building Materials

Granul teastes have negative effects on the environment due to contamination.On the other hand stony components in granular wastes have a potential good perspectives for utilization in civil engineering works as aecondary row building materials to reuse such materials without enwironmental risks,all contaminamts must be remored or reduced to an acceptable level.therefore liberation of materials is an important step in waste treatment.for this purpose,separation and cleansing techniques are suitable based on the analysis of contaminants in wastes,it is discussed how to select suitable techniques.the rules for technique selection and processes for quality improrement are set up to evaluate the entironmental quality and lechnical quality of output producls.it is necessary to check leaching be haviours and physical properties.

Quality improvement of granular wastess—The effective way to recycle secondary raw building materials

Granular wastes have negative effects on the environment due to contamination. On the other hand, stony components in granular wastes have a potential good perspectives for utilization in civil engineering works as secondary raw building materials. To reuse such materials without environmental risks, all contaminants must be removed or reduced to an acceptable level. Therefore liberation of materials is an important step in waste treatment. For this purpose, separation and cleansing techniques are suitable. Based on the analysis of contaminants in wastes, it is discussed how to select suitable techniques. The rules for technique selection and processes for quality improvement are set up. To evaluate the environmental quality and technical quality of output products, it is necessary to check leaching behaviours and physical properties. XING Wei-hong: Born in 1967 Funded by the Dutch Ministry of Transportation of the Netherlands(DWW98)