Recently, the British royal family announced a new garbage disposal plan that will ban the use of plastic straws and plastic bottles in the royal industry to reduce the production of plastic waste, and some European scientists said that if they do not change the existing production methods, to 2050 There will be more plastic garbage in the sea than in fish.
Plastics have many advantages, and other materials can not be replaced, but degradable plastics can fully meet the performance and characteristics of traditional plastic raw materials, but there are still many obstacles in popularization and promotion.
'Limiting plastic order' is hard to work
China is one of the top ten producers and consumers of plastic products in the world. It has been a long time since it was plagued by plastic waste. As early as ten years ago, the governance of 'white pollution' has become an important topic of concern for academics and industry. But the seriousness of the problem seems to have left no time for large-scale use of degradable materials.
In 2007, the General Office of the State Council issued the “Notice on Restricting the Production and Sale of Plastic Shopping Bags”, attempting to use economic means to limit and reduce the use of plastic bags and curb 'white pollution' through administrative means. The 'plastic limit order' notice takes the supermarket's ultra-plastic shopping bag 'opening knife', and implements the paid use system of plastic shopping bags. Since the implementation in 2008, it has been a full decade, how is the effect? Is the environment improved?
Many experts who study degradable materials say that the current effect of plastic-free plastics does not achieve the desired results. With the improvement of people's living standards, the quality of life and requirements are getting higher and higher, bringing a lot of over-packaging. This is also the demand. The sharp increase has led to an increase in the use of plastics. For example, the problem of a large amount of plastic waste generated by the express delivery and other industries is not a plastic limit.
Degradable plastics face promotion problems
With the development of materials technology, many degradable synthetic materials have been reported in the newspapers. Some experts in degradable plastic materials said that in practice, the degradable plastic bags currently in use are not enough toughness and can withstand limited weight. When things are put in, they break down, and they simply don't meet the requirements we need every day. Everyone is looking for alternatives in all aspects, but it is hard to replace them by practice.
From the current point of view, the price of degradable plastic materials is still more expensive than traditional plastics. But with the large-scale use of this material, the price of degradable plastics will fall. Even so, the full promotion of biodegradable materials needs 3 ~5 years, the country needs some encouraging policies.
In fact, degradable plastics still have a problem of degradation cycle. Traditional plastics may take one or two hundred years, and the time required for degradable plastics is shorter. For degradable plastics, there may be some misunderstandings that degradable plastics are needed. When carrying an item, it must have the performance of a plastic bag. When it is not needed, it can be degraded immediately without harming the environment. This is actually unrealistic.
Find the right disposal method
In fact, plastic is not an enemy of human beings. On the contrary, it is of great help to the development of human beings. If we need to solve the problem of plastic pollution, we must find a suitable and good treatment method, such as plastic garbage entering the sea and the soil. Living garbage that has not been properly disposed of has caused great harm to the environment. So first we have to classify plastic waste.
Secondly, although plastics are difficult to degrade, there is really no problem in incineration, so there is still a way out. But the plastics that enter the incineration plant will produce dioxins, but dioxins also have a way to deal with them. We can prevent them from entering the ocean or the soil by means of monitoring, and thus enter the global material circulation chain.
Third, economic means is still an important means of controlling the production of 'white pollutants'. At present, the domestic payment of super-shopping plastic bags is indeed an effective means in Pan Gong’s view, but the effect of implementing the decade is very small. Because 'the charge is still too low'.
Because a dime (the cost of plastic shopping bags) is not a way to limit everyone, if you increase the price of plastic bags, then the number of people purchased will be greatly reduced, such as rising to a dollar, there will be more The man used cloth bags to buy things.
There is also a plastic bag for a fee, which means a good quality plastic bag. If people use a good plastic bag, they can be recycled three to four times, then they will be incinerated through the terminal disposal system, which will pollute the plastic. , also has a very large mitigating effect.
At present, the non-supermarket parts of the domestic plastic bag consumer market are still in a chaotic state of 'disorderly use', and the quality of plastics is extremely low-end. If the interest chain of cheap garbage bags is interrupted, environmentally-friendly plastic bags are sold as commodities, plus After the garbage is sorted, the value generated by the recycling of environmentally friendly plastic bags can give enterprises the incentive to produce environmentally friendly plastic bags. This is another way for plastic bags to be commercially available.