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First, it is conducive to the protection of the ecological environment Currently, due to the negative effects of a variety of pollution factors, the ecological environment has been gradually destroyed, and it is critical to the safety of human survival. This is not about the world. It is very grave and worrying just because of the current state of the environment in our country. According to relevant information, its severity is reflected in:
- The freshwater resources are deteriorating. Every year, China discharges more than 35 billion tons of sewage into fresh water, and 36% of urban river sections. 50% of urban water sources are polluted, and the pollution in the offshore waters is also very serious.
- The air is getting polluted. Every year, China has 12 million tons of throat dust and 7 million tons of sulphur dioxide discharged into the air. In some cities, the concentration of aerosols exceeds several times that of the World Health Organization. There is even heavy metal dust and toxic waste gas drifting in our country’s atmosphere.
- Solid waste is increasing. China's annual industrial waste discharge amounts to more than 600 million tons, and it has now accumulated 70-80 billion tons of garbage, covering an area of ​​nearly 700 million square meters. Urban solid waste (solid waste) has exceeded 140 million tons in 1994 and increased at a rate of 10% per year. These wastes have seriously polluted China's rivers, lakes, coastal waters, and farmland. Many industrial cities have been "encircled" in garbage, and the "white" pollution is even more serious.
- Soil erosion is getting worse. At present, the area of ​​soil erosion in China is 3.67 million square kilometers, accounting for 38.2% of the total land area. For more than 40 years, the area of ​​cultivated land has been reduced by more than 40 million mu, and there has been an increase.
- The area of ​​forests and grasslands is declining. At present, China's forest coverage rate is only 13.5%, which is only about 60% of the world average. The degraded area of ​​grassland in China is nearly 100 million hectares, accounting for 1/3 of the existing grassland. China's annual desertification of 2,100 square kilometers of land, a total area of ​​1.53 million square kilometers of desertification, accounting for 16% of the country's total land area. Take Qilian Mountain alone as an example. In the 1950s, the forest coverage rate was 22.4% and now it has fallen to 14.4%. The glacier snow water is reduced, the snow line is elevated, the glacier retreats at a rate of 16.8 meters per year in individual sections, the deserts in the northern corridors incur southwards, nearly 2 million mu of farmland are forced to abandon farming, and 6 million mu of farmland is harmed by wind and sand. The past oasis agriculture is vulnerable. .
- The urban population is increasing. The number of cities in China in 1949 was 450, and the city’s non-agricultural population was 146 million, including 30 cities with more than 1 million; in 1993, there were 570 cities in China, and the urban population was nearly 200 million, of which nearly 100 were cities with more than 500,000 people. Compared with the 50s, it has shown an explosive increase. This has caused "modern four harms" of water, air, solid waste and noise pollution. In urban pollution, various packaging wastes account for a considerable proportion. Therefore, focusing on the recycling and comprehensive utilization of packaging waste is an effective protection of the ecological environment.
Second, it is beneficial to save the earth's resources The earth's resources are limited, but human development is unlimited. The limited resources on the earth will only become less and less because of the constant consumption of human beings. And once some resources are consumed, they will not be able to grow again, and they will not be able to change them like magic masters. "come out. The magician's stage performance is only an art and fantasy. It will never become an eternal reality. Our country is a country with little resources. Therefore, we must not be complacent about what we used to say in the past as a “big bountyâ€. According to the average calculation of 1.2 billion people across the country, the proportion of China’s resources is quite low. As far as the area of ​​forests is concerned, the total area is the fifth largest in the world, and the per capita area accounts for the 119th place, which is regarded as the last one.
Packaging plays a decisive role for commodities, and high-quality packaging also adds a certain amount of added value to the goods. However, after the package has been recycled, it is discarded as waste and garbage. This is both a pollution to the environment and a waste of resources. As the staff of the "Earth Village-Environmental Culture Center" in Beijing said: "Tossing out all sorts of packaging waste is garbage, and categorizing it as waste can become resources and wealth," which makes sense. . At present, some regions and some units are working on re-refining gasoline, diesel, or other useful substances from various waste plastic products. This is a useful exploration of changing “junk†into “resourcesâ€. In addition, the largest amount of packaging materials is cardboard.
93% of the world's papermaking fiber (including waste utilization) is wood. It's not hard to imagine how much pressure is exerted on the earth by the expense of such a large papermaking raw material! The massive deforestation of the forest seriously endangers the environment in which human beings live. Therefore, the recycling of various packaging wastes should, to a large extent, be used for the recycling of wastes. To a large extent, recycling of waste paper products and waste plastics should be placed in a prominent position, both directly or Indirect protection of the ecological environment, and effectively save the Earth's resources. (To be continued)
Packaging waste recycling and comprehensive utilization (on)
Various waste packaging materials and packaging items are an important source of pollution. Therefore, the effective recovery and comprehensive utilization are the objective requirements of human self-survival, and its significance lies in: