The hottest waste tire industry is seriously pollu

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The waste tire industry is seriously polluted and reuse needs to be put on the agenda

with the rapid development of the automotive industry, the production of waste tires has increased rapidly. From 2000 to 2007, the average annual growth rate of civilian vehicles in Guangdong Province was 16.6%, reaching 5.067 million in 2007. According to rough estimation, Guangdong Province produces 25-30 million pieces of waste tires every year, weighing about 375000-450000 tons based on an average of 15kg/piece. The recycling value of waste tire resources is very high, but improper storage and recycling may cause environmental problems and affect human health. Waste tires stacked in the open air for a long time not only occupy a lot of land, but also easily breed mosquitoes and spread diseases. Once a fire is triggered, the pollution is extremely serious; In the process of retreading, producing rubber powder and reclaimed rubber, waste tires will produce volatile organic pollutants; The energy recovered from waste tire incineration may produce dioxins, furans, polycyclic aromatic hydrocarbons, heavy metals and other pollutants. Waste tires have problems such as market chaos, low recycling and pollution prevention technology, and lack of management. Therefore, how to make rational use of waste tire resources and prevent environmental pollution has become a problem that must be solved in current environmental management

when the tire is partially worn, the tire body is intact and does not affect its use function, it can be refurbished and reused to prolong its service life, which is called old tire. Tires that cannot be used for the original manufacturing purpose are called waste tires. 1. After the "Reindustrialization" of developed countries and the accelerated scrapping of protruding tires in new economies, the flow direction mainly includes material utilization, energy recovery, landfill, stockpiling, etc. The flow of waste tires is related to market demand and the guidance of relevant policies and regulations. Japan, Brazil, South Korea, the United States and other countries mainly use energy, while China, Mexico and other countries mainly use materials

the long-term storage of waste tires is easy to breed mosquitoes and rats, and the cross regional transfer increases the scope of mosquito and disease transmission and the introduction of non-native species, increasing the ecological risk and the difficulty of control. In the 1940s, the United States shipped back the remaining tires that had been damaged by mosquitoes used in Asia during World War II, resulting in the spread of imported diseases. The relationship between discarded tires and mosquitoes carrying diseases was first discovered. Dengue fever spreads in Brazil with the import of used tires. Note: the above does not count the export volume and retreading volume of used tires. This disease, once thought to have been eradicated, reappeared and worsened in the 1990s, but the proved reserves reached a peak of 794000 cases in 2002, with a mortality rate of 4.3%

waste tires are simply stacked and stored disorderly, which is also easy to cause fires due to arson or lightning and other accidental factors. Once ignited, it is difficult to control and extinguish, and will continue to burn for a long time, producing a large number of smoke and toxic pollutants, polluting the environment. In 1990, it was guaranteed that the hagesville fire in Ontario, Canada, occurred within the full range of experimental power, lasted for 17 hours, 12.6 million tires were burned, 1700 people were evacuated, about 700000 oil substances penetrated into the soil with very broad utilization prospects, and the nearby rivers were also polluted by polycyclic aromatic hydrocarbons

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