What is waste? can bring us harm? can be recycled and how to use it?

Electronic waste, commonly known as "e-waste",
Include all kinds of waste after use of computers, communications equipment, television sets, refrigerators, washing machines and other electrical and electronic products.
The volume of electronic waste. Beijing in 2003 to 3.015 million, e-waste, weight about 100,000 tons of electronic waste. At present, the electronic waste set an annual average growth rate of 4.4%, weight of an average annual growth of 3.9%. In addition, since 1996, urban residents ' purchases of electronic products reached a peak. 1996-2002, television sets, refrigerators, washing machines, air conditioners and computers, buying a total of about 6.585 million units, will also face the scrapping of these products within the next decade, e-waste problem will be more prominent.
Harm of e-waste. Fluorine-containing substances in electronic waste will cause direct damage to the ozone layer of the atmosphere, including lead, chromium, cadmium, mercury and other metals on many systems within the human body, especially the blood system, nervous system and kidneys are dangerous.
The value of e-waste. From the perspective of resource recycling e-waste, and higher potential value. Denmark Technical University study found: 1 ton free collection of e-cards contain about 272.16 kilo plastic, 129.73 kilos of copper, 0.45 kg of gold, 40.82 kg of iron, 29.48 kg of lead, antimony nickel 19.96 kg, 9.98 kg. If it can be recycled, can reach only 0.45 kilograms of gold worth $ 6000, so e-waste recycling has significant social and economic benefits.
Main problems in recycling. A management vacuum. From waste, recycling e-waste to deal with all aspects are not regulations, there is no clear regulatory authorities and responsibilities. Second, low level of processing technology. Processed only as a means of profit, feel free to vent during processing freon and the compressor oil dumping, burning polyurethane insulation, causing environmental pollution. Third, used electrical and electronic products quality and safety could not be guaranteed. About 80% after repair, the e-waste each year into the secondary market, used electrical and electronic products do not have quality and safety testing are in the area of sales. Four is electrical and electronic product manufacturers, retailers, and consumers ' environmental awareness is not high. Most manufacturers have not fully taken into account in the design of future from the source recycling requirements. Manufacturers, distributors and consumers there is no e-waste recycling as their social responsibility and environmental responsibility.
Second, foreign experience of
European, and Japan and United States, national in electronic waste legislation, and implementation, and process technology and the industry development, aspects in leading status, they of experience can antibody for following points: legislation is established electronic waste recycling processing system of guarantees; producers accountability is electronic waste recycling processing system effective run of guarantee; public consciousness of improve is carried out resources cycle again using of premise conditions; processing process technology of improve is electronic waste recycling processing industry development of necessary.
Third, principles and objectives of e-waste recycling in Beijing
Principle: the principle of reduction, recycling and harmless; principles of unified planning, process control; industrial principles.
Immediate objectives: by 2006, through the implementation of relevant State departments issued related regulations, establish e-waste recycling management system, e-waste comprehensive treatment demonstration projects in key areas, electronic waste recycling and dismantling of disorder, resulting in environmental pollution, the waste of resources is controlled.
Specific measures: recycling e-waste 50%; utilization of parts and materials recycling utilization of 65%.