Kinds of Wastes Solid wastes:domestic,commercial and industrial wastes especially common as co-disposal of wastes Examples:plastics,styrofoam containers,bottles, cans,papers,scrap iron,and other trash Liquid Wastes:wastes in liquid form Examples:domestic washings,chemicals,oils,waste water from ponds,manufacturing industries and other sources 6
6 Kinds of Wastes Solid wastes: domestic, commercial and industrial wastes especially common as co‐disposal of wastes Examples: plastics, styrofoam containers, bottles, cans, papers, scrap iron, and other trash Liquid Wastes: wastes in liquid form Examples: domestic washings, chemicals, oils, waste water from ponds, manufacturing industries and other sources
Quality of waste ·Combustible or not ·MC
Quality of waste • Combustible or not • MC
Physical properties of MSW o Moisture content Wet-weight method:M=100 oW initial weight kg oD=weight of sample after drying at 105 。C Dry-weight method:M=100 UNEP
Physical properties of MSW
Physical properties of MSW Specific weight 。 Weight of unit volume of a substance,it is not its density. It is normally reported as loose,as found in containers,uncompacted,compacted Typical MSW without compaction is about 0.1~0.6t /m3,after compacton,it is about 1 t m3. 90 UNEP
Physical properties of MSW • Specific weight • Weight of unit volume of a substance, it is not its density. • It is normally reported as loose, as found in containers, uncompacted, compacted • Typical MSW without compaction is about 0.1～0.6t ／m3, after compacton, it is about 1 t／m3
Particle size and size distribution 。L ·W 。H
Particle size and size distribution • L • W • H