Some important features o Waste contains the same materials as are found in useful products o Only differs from useful materials by its lack of value o The lack of value can be related with mixed and unknown composition of the waste. UNEP
Some important features Waste contains the same materials as are found in useful products Only differs from useful materials by its lack of value The lack of value can be related with mixed and unknown composition of the waste
Classification of waste o by physical state o By original use(Packaging,food,etc) o Physical property (combustible, compostable,recyclable) o Origin o Safety level 9 UNEP
Classification of waste by physical state By original use (Packaging, food, etc) Physical property (combustible, compostable, recyclable) Origin Safety level
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 90 UNEP 8
8 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
Classification of Wastes according to their Properties Bio-degradable can be degraded (paper,wood,fruits and others) Non-biodegradable cannot be degraded (plastics,bottles,old machines,cans,styrofoam containers and others) 90 UNEP 9
9 Classification of Wastes according to their Properties Bio-degradable can be degraded (paper, wood, fruits and others) Non-biodegradable cannot be degraded (plastics, bottles, old machines, cans, styrofoam containers and others)
Classification of Wastes according to their Effects on Human Health and the Environment Hazardous wastes Substances unsafe to use commercially,industrially, agriculturally,or economically that are shipped, transported to or brought from the country of origin for dumping or disposal in,or in transit through o Non-hazardous o Substances safe to use( commercially,industrially, agriculturally,or economically that are shipped, transported to or brought from the country of origin for dumping or disposal in,or in transit through UNEP 10
10 Classification of Wastes according to their Effects on Human Health and the Environment Hazardous wastes Substances unsafe to use commercially, industrially, agriculturally, or economically that are shipped, transported to or brought from the country of origin for dumping or disposal in, or in transit through Non-hazardous Substances safe to use commercially, industrially, agriculturally, or economically that are shipped, transported to or brought from the country of origin for dumping or disposal in, or in transit through