White pollution, soil pollution, white pollution status

The value of plastic bags is low, and in addition to being scattered on city streets, tourist areas, water bodies, and both sides of roads and railways in the process of use, it also has potential hazards. The plastic structure is stable, not easy to be degraded by natural microorganisms, and does not separate in the natural environment for a long time. This means that if waste plastic waste is not used, it will become a pollutant in the environment and continue to accumulate forever, which will cause great harm to the environment.

First, it affects agricultural development. The accumulation of waste plastic products in the soil will affect the absorption of nutrients and water by crops, resulting in reduced crop yields.

Second, it poses a threat to the survival of animals. Waste plastic products discarded on land or in water bodies are swallowed by animals as food, resulting in the death of animals. Last year, nearly 1,000 sheep from 20 herdsmen in Qinghai Lake were killed, causing an economic loss of more than 300,000 yuan.

Sheep like to eat the oily residue wrapped in plastic bags, but often eat together with plastic bags, because the eaten plastic remains in the stomach for a long time and is difficult to digest, these sheep's stomachs are crowded, can no longer eat, and can only be starved to death. This kind of thing is not uncommon in zoos, pastoral areas, rural areas, and oceans.

Third, waste plastics will not only occupy a large amount of land with landfills, but also the occupied land will not be restored for a long time, affecting the sustainable use of land. If the waste plastic products that enter the domestic garbage are landfilled, they will not degrade for 200 years.

Moreover, plastic bags use petroleum as raw materials, which not only consumes a lot of resources, but also cannot be decomposed, and buried in the ground will pollute land and rivers.

In addition, the plastic bag itself can release harmful gases. Cooked food, in particular, often spoils after being packaged in plastic bags. Spoiled food has a particularly prominent impact on children's healthy development.

I think the first is white pollution, and the second is the deeper level of soil pollution.

Clause. 1. Invasion of land is excessive. Plastic waste also stays in nature for a long time, generally up to 100-200 years.

Clause. 2. Polluting the air. Plastic, paper scraps and dust fly in the wind.

Clause. 3. Polluting water bodies. Plastic bottles and lunch boxes floating on the surface of rivers and seawaters, plastic bags and bread wraps hanging on branches above the water surface not only cause environmental pollution; And if the animal eats the white garbage by mistake, it will hurt its health, and even starve to death because it is twisted in the digestive tract and cannot be digested.

Clause. Fourth, fire hazards. Almost all white garbage is combustible, and methane and other combustible gas will be produced in the natural stacking process, and fire accidents caused by open flames or spontaneous combustion continue to occur, often causing heavy losses.

Clause. 5. White garbage can be a nest for pests, providing food, habitat and breeding for rats, birds, mosquitoes and flies, and the residue in it is often the source of infectious diseases.

Clause. 6. After waste plastic packaging enters the environment, it is difficult to degrade, causing long-term and deep-seated ecological and environmental problems. First of all, waste plastic packaging is mixed in the soil, which affects the absorption of nutrients and water by crops, which will lead to a reduction in crop yield.

Soil pollution is very harmful, which can be roughly explained from the following aspects:

First, soil pollutants are further polluted by volatilization and rainwater erosion in the environment, resulting in a decline in regional environmental quality.

Second, the impact on plants. Pollutants in the soil exceed the tolerance limit of plants, which will cause absorption and metabolism disorders of plants, and some pollutants remain in plants, which will affect the growth and development of plants and cause plant variation. As far as agricultural production is concerned, it will reduce the yield of crops and the quality of agricultural products.

Third, soil pollution has an impact on human health. Crops grown in contaminated soil absorb and accumulate large amounts of toxic substances (plant residues) that ultimately affect human health through the food chain (e.g. mercury, cadmium, lead, hexahexah, DDT, etc.). In addition, pathogen contamination, including parasites, infectious bacteria and pathogenic viruses, can directly transmit diseases to people, which is more harmful to human health.

After the soil is contaminated with radioactive materials, it can produce radiation through radioactive decay. These rays can penetrate human tissues, causing some tissue cells in the body to die, causing dizziness, fatigue, decreased or increased white blood cells, and cancer.

Summary. According to the survey, 3% of Beijing's domestic waste is waste plastic packaging, with a total annual volume of about 140,000 tons; 7% of Shanghai's domestic waste is waste plastic packaging, with a total annual volume of about 190,000 tons. Tianjin also has more than 100,000 tons of waste plastic packaging every year.

Every year, Beijing discards about 2.3 billion plastic bags, about 100 million disposable plastic tableware, and about 6.75 million square meters of waste agricultural film in the environment.

People jokingly called it "the suburbs are white". As a new type of material, plastic products have the advantages of light weight, waterproof, durable, mature production technology and low cost, and are widely used all over the world and are increasing year by year. The growth rate of plastic packaging materials in the world market is higher than that of other packaging materials, and the average annual growth rate of plastic packaging materials in 1990-1995 is.

White Pollution Status.

According to the survey, 3% of Beijing's domestic waste is waste plastic packaging, with a total annual volume of about 140,000 tons; 7% of Shanghai's domestic waste is waste plastic packaging, with a total annual volume of about 190,000 tons. Tianjin also has more than 100,000 tons of waste plastic packaging every year. Every year, Beijing discards about 2.3 billion plastic bags, about 100 million disposable plastic tableware, and about 6.75 million square meters of waste agricultural film.

People jokingly called it "the suburbs are white". As a new type of material, plastic products have the advantages of light weight, waterproof, durable, mature production technology and low cost, and are widely used all over the world and are increasing year by year. The growth rate of plastic packaging materials in the world loss market is higher than that of other packaging materials, and the average annual growth rate of plastic packaging materials in 1990-1995 is.

The social harm of white pollution: With the acceleration of people's life rhythm, the social life is developing towards convenience and hygiene. In order to meet this demand, disposable styrofoam lunch boxes, plastic bags, chopsticks, water cups, etc. have begun to frequently enter people's daily lives.

The emergence of these easy-to-use and low-cost packaging materials has brought a lot of convenience to people's lives. On the other hand, these packaging materials are often discarded after use, resulting in"White pollution";It forms an environmental hazard and becomes a great environmental problem.

White pollution mainly includes plastic bags, plastic packaging, disposable polypropylene fast food boxes, plastic tableware, cups and plates, electrical stuffing foam stuffing, plastic beverage bottles, yogurt cups, ice cream skins, etc.

In the face of the increasingly serious problem of white pollution, people hope to find a plastic substitute that can replace the current plastic performance, and does not cause white pollution, degradable plastic came into being, this new functional plastic, which is characterized by a certain service life after being discarded, under specific environmental conditions, due to its chemical structure changes significantly, causing some performance loss and appearance changes and degradation, harmless or less harmful to the natural environment.

For example, starch filled plastic, first of all, the starch contained in it is quickly decomposed by the amylase secreted by the microorganisms in the soil in a short period of time and forms a void, resulting in the decline of the mechanical properties of the film, and at the same time, the self-oxidizer added in the formula reacts with the metal salts in the soil to form peroxide, so that the chain of polyethylene is broken and degraded into small fragments that are easily swallowed by microorganisms, which are absorbed by the natural environment, and at the same time play a role in improving soil quality.