What are the references for white pollution research? Urgently

As early as 40 years ago, it was found that there was a residual vinyl chloride monomer in polyvinyl chloride plastics. When people come into contact with vinyl chloride, they will have symptoms such as swelling of the wrists and fingers, **sclerosis, and may also have symptoms such as splenomegaly and liver damage. In our country, almost all of the ultra-thin plastic bags we use come from the reuse of waste plastics, which are produced by small businesses or family workshops.

The raw materials used in these production plants are waste plastic drums, basins, disposable syringes, etc. The degradation time of plastic products used in China usually takes at least 200 years. If it is landfilled, it will directly occupy the land, and it is difficult to degrade within 1000 years, and the waste agricultural film and plastic bags in the farmland remain in the field for a long time, which will affect the absorption of water and nutrients by crops, inhibit the growth and development of crops, and cause the reduction of crop yields.

If livestock eat plastic film, it will cause livestock to become sick and even die. Landfill operation is still one of the main methods of municipal waste disposal in China. Due to the small density and large volume of plastic film, it can quickly fill the site, reducing the capacity of the landfill site to process waste; Moreover, due to the soft foundation of the landfilled site, harmful substances such as bacteria and disease pure toxins in the garbage can easily seep into the ground, pollute the groundwater, and endanger the surrounding environment.

If the PVC is directly incinerated, it will cause serious secondary pollution to the environment. When plastic is incinerate, it produces not only large amounts of black smoke, but also dioxins, by far the most toxic of all. It takes at least 15 months for dioxins to decompose in the soil, causing damage to plants and crops. Dioxins have a serious damaging effect on the liver and brain of animals.

The pollution of the environment by dioxins emitted from incineration garbage has become an extremely sensitive issue of concern to the whole world.

From the perspective of resource conservation, because plastic products are mainly facing depleted petroleum resources, they should be as much as possible, but because the production cost of re-production at this stage is much higher than the direct production cost, it is difficult to do so under the current market economy conditions. 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 cavity, 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 play a role in improving the soil.

Polluting water bodies. The harmful components in the garbage are easily washed into the surface water body through rainwater, and a large number of acidic and alkaline organic pollutants will be produced in the process of garbage stacking or pit filling, and the heavy metals in the garbage will be dissolved at the same time. The leachate produced by the garbage pollution source will enter the groundwater body through soil infiltration; Waste is disposed of directly into rivers, lakes or oceans, causing even more pollution.

You see: plastic bottles and lunch boxes floating on the surface of the Summer Palace and Beihai Sea, plastic bags and bread wraps scattered on the forest and mountain roads in Xiangshan and Bada and hanging on tree branches, etc., some tourists only want their own convenience, causing pollution of the tourism environment. If an animal accidentally ingests white garbage, it will not only harm health, but even lead to death.

Fire hazardsFire hazards, garbage contains a large number of combustibles, and methane and other combustible gases will be produced in the natural stacking process, which is easy to cause disasters in case of open flames or spontaneous combustion. With the increase of the organic matter content in urban garbage and the change from open-air scattered stacking to centralized storage, and in long-term storage, only simple covering is used, resulting in the harm of garbage biogas becoming increasingly prominent, and garbage accidents continue to occur, resulting in heavy losses.

Therefore, we must vigorously carry out publicity and education on the source classification and collection of garbage through television, radio, newspapers and information networks; We should pay close attention to formulating laws and regulations on the classification and collection of garbage suitable for national conditions, and strictly implement them; Consideration can be given to carrying out in-depth and detailed pilot work on source separation and collection of waste in some units; And further discuss with you to improve the management methods, so that the source classification and collection of garbage as soon as possible. Let us work together to promote garbage classification, remove garbage pollution, turn waste into treasure, and save resources. It will enable Beijing to win the right to host the 2008 Olympic Games with a new look, and at the same time provide us with a beautiful and healthy living space.