In 2016, the output of plastic products in China exceeded 77 million tons, with an output value of nearly 2 trillion yuan. While plastic brings convenience to human beings, its harm to the environment is gradually emerging. How to deal with waste plastics correctly? How to promote the recycling of plastic products? These problems are worth thinking about.

Xi'an plastic bucket manufacturer Don't know how to recycle waste plastics

Plastic is a great invention in the 20th century. Its application fields and varieties are constantly expanding. It is very convenient for people's life and has become a material closely related to human life. It is unimaginable what our life would be like without plastics. The output of plastic products in China has exceeded 77 million tons, with an output value of nearly 2 trillion yuan, and is growing year by year. Such a huge market also bears the heroic dreams of countless people and makes unremitting efforts for it. Legendary Li Ka shing's Yangtze River industry once started with plastic products.

However, perfect things cannot exist, and God does not allow them. Similarly, plastic is also known as one of the worst inventions in the 20th century, because its serious pollution has been gradually discovered and increasingly valued. To make matters worse, the treatment of such pollution is more difficult than expected.

Once, a generation of outstanding chemists worked hard to realize the excellent physical and chemical properties and durability of plastics, making plastics widely used in many fields because of its light weight, durability, beauty and low price. But unexpectedly, it is these excellent properties that produce a large number of durable and non corrosive plastic waste. A large number of plastic products discarded after use have become a major hazard to the environment.

2. Disposal of waste plastics

At present, there are three main treatment methods for municipal plastic solid waste: landfill, incineration and recycling. Countries vary according to their national conditions. The United States is mainly landfill, while Europe and Japan are mainly incineration.

1. For the treatment of the landfill site, because the plastic is generally light and not easy to rot, the landfill site will become a soft soil foundation, which is difficult to use in the future.

2. Incineration treatment: due to the high calorific value of plastics, it is easy to damage the furnace. In addition, the gases generated by incineration will contribute to global warming. Some plastics will release harmful gases and pollute the atmosphere during incineration.

3. Adopt recovery method. Due to high labor consumption, high recovery cost and lack of corresponding recovery channels, recycling only accounts for about 15% of the world's total plastic consumption.

However, due to the limited oil resources in the world, the recycling of plastics is of great significance from the perspective of saving the earth's resources. Therefore, countries all over the world have invested a lot of manpower and material resources to develop the key technology of waste plastic recycling, and are committed to reducing the cost of plastic recycling and developing corresponding application fields.

3. Recycling method of waste plastics

Xi'an plastic bucket The manufacturer tells you that there are several ways to recycle waste plastics:

1. Heat recovery method

Most plastics are mainly composed of hydrocarbons and can be burned. For example, polystyrene burns more heat than dye oil. However, heat recovery is one of the later methods of recycling waste plastics, because most waste plastics produce toxic gases, which also pose a threat to the environment. The burning of halogen containing plastics will be the main culprit of dioxin production.

2. Physical recovery and regeneration

Physical recycling is a method actively advocated and promoted at present. It is an effective means to turn waste into treasure, save energy and protect the environment. However, at present, it mainly stays in the recycling and sorting link, with less recycling income, great sorting difficulty and high cost. People's awareness of environmental protection is not high, and they cannot effectively classify garbage.

3. Chemical reduction method

This method is to cut the long chain of the polymer and restore its original properties. Cracked raw materials can be used to make new plastics. Some methods are to promote chemical cracking of combined carbon atoms by adding chemical elements, or to promote thermal cracking by adding energy. Some materials have been realized