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Anonymous users2024-02-06The opening report of the research study "White Pollution".
Leader: **
Panelists: **
Instructor (or expected instructor):
Division of labor in small groups. Printouts, questionnaires.
Origin of the problem. Background).
See a lot of plastic bags on the grass.
There are many disposable lunch boxes in the cafeteria, and disposable dishes and chopsticks will be messy, and if they are thrown on the soil, the soil will harden and plants cannot be grown.
Research Methods: Survey Method: Questionnaire Survey, Online Collection, Sample Survey.
Alternate Topics. 1. How to reduce white pollution.
2. What harm does white pollution bring to people?
Research phase. 1 Conduct surveys of different populations.
2 Data classification.
3. Summarize and draw conclusions.
Time required. 14 days expected results.
Success, with our efforts, to investigate, find relevant departments for guidance, plus their own feelings about white pollution to observe, think, will be successful.
Instructors. Suggestions and comments.
Date: 2010 *month**.
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Anonymous users2024-02-05Dongwai drops a kiss and hugs one.
I won't say either.
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Anonymous users2024-02-04As 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.
Use less plastic bags and bring your own bags on the street.
Pollution Status:
According to the survey,3% of Beijing's domestic waste is waste plastic packaging, with a total of about 140,000 tons per year7% of Shanghai's domestic waste is waste plastic packaging, with a total annual volume of about 190,000 tonsTianjin 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. >>>More
The so-called "white pollution" is a figurative term for the phenomenon of waste plastics polluting the environment. In nature, there are almost no microorganisms that can use plastic as nutrients. Plastic waste stays in nature for a long time, even up to 500 years.
About white pollution.
According to the survey, the domestic garbage in Beijing. >>>More
White pollution is a unique environmental pollution in China's cities, a large number of discarded plastic products can be seen everywhere in various public places, they come from nature, made by human beings, and are not easy to be absorbed by nature when they are ultimately attributed to nature, thus affecting the ecological environment of nature. 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. >>>More