Non-degradable plastic bags are called "the worst inventions of humans in the 20th century." In addition to providing convenience to people's daily lives, non-degradable disposable plastic products are used on a large scale without restraint, resulting in white pollution and raging. A major public nuisance.
Recently, the Hainan Provincial Press Office held a press conference to announce and interpret the implementation plan of Hainan Province for the complete ban on the production, sale and use of disposable non-degradable plastic products (hereinafter referred to as the “Programâ€), and announced that Hainan has been classified since this year. Gradually promote a comprehensive ban.
Upgraded “Limited Plastics†to “Forbidden Plasticsâ€, Hainan’s actions have been rugged. Experts reminded that in order to "ban plastics", we should summarize the shortcomings in the implementation of "restricting plastics" in the past, and do a good job in R&D, production and promotion of alternative products.
Implemented more than ten years of "restricted plastics" upgraded to "forbidden plastic"
Talking about "forbidden plastics", the current "plastic limit order" is a topic that cannot be bypassed. Since 2008, China has implemented a “plastic limit order†nationwide.
Zhang Jing, deputy director of the Soil and Environmental Management Department of the Department of Ecology and Environment of Hainan Province, said that the “plastic limit order†has obvious effects on large-scale commercial supermarkets. According to statistics, in recent years, the use of large-scale commercial ultra-plastic bags has been reduced by about two-thirds, but it has little effect on the farmer's market. “At this stage, large shopping malls need to spend money to buy disposable plastic bags. Free plastic bags are still everywhere in farmer's markets, shops and other places. In addition, during this period, the Internet has promoted the rapid development of online consumption, take-out, express delivery and other new formats. The use of plastic packaging and plastic tableware has risen sharply."
During the past ten years, some provinces and cities and some places in the country have issued different restrictions on plastics. After sorting out the effectiveness of plastics restrictions in various places, the reporter found that most of the restrictions on plastics in the region are focused on the management of large-scale commercial super-plastic shopping bags, lacking specific supervision mechanisms for e-commerce and farmer markets.
In the "Plan" introduced recently, specific solutions have been proposed for the "industry standards" and "channel management": perfecting the standard system, establishing a traceability system for biodegradable materials, and strengthening the closed loop of market supervision and enforcement. management.
“Now there is no national standard for all biodegradable products, and there are no relevant standards in other provinces. Therefore, Hainan needs to innovate and be the first local standard for full biodegradation.†Deng Xiaogang, director of the Hainan Provincial Department of Ecology and Environment, said .
Accelerate the development, production and supply of alternative products
"Limited plastic" has changed to "forbidden plastic", and it has to replace the product with strong reinforcement.
In fact, the implementation of the "ban on plastics" is not to block all plastic products, but to prohibit the production, sale and use of non-degradable plastic bags, plastic tableware and so on. This requires accelerating the development, production and supply of alternative products to meet market demand.
To this end, the "Proposal" proposes that Hainan will establish a demonstration base for the biodegradable plastics industry, organize the formulation of industrial development plans, and introduce advanced enterprises to cooperate with local enterprises to form a production capacity of one-time whole biodegradable plastic products on the island.
In view of the “green, environmentally friendly, and renewable†characteristics of biodegradable materials, scientists from all over the world are working hard to develop new biodegradable materials.
It is understood that the latest research results of domestic biodegradable materials include: wood-like composite materials, intelligent seawater degradable materials, blue water biotechnology, and high-strength, high-tough, fully-degrading biomass/polymer composite materials. Foreign research results mainly include: PET substitutes made of bio-based furan molecules, "sugar + carbon dioxide" biodegradable plastics, and new milk protein films.
“The biodegradation industry has developed to the present day. Most of the technical routes have matured in terms of raw materials and end products. However, there are still some problems to be solved in large-scale production.†China's biodegradation industry technology innovation strategy Alliance Secretary General Lu Lianfeng said that the current processing technology, equipment and molds for biodegradable products need to be further explored to meet the characteristics of biodegradable materials.
In addition, some special additives or auxiliaries used in the production and modification of biodegradable raw materials require further development.
Strengthening social advocacy for the proper use of biodegradable materials
Although the use of biodegradable materials is more environmentally friendly than plastics, in the final analysis, it is still in the category of industrial products. Will it bring new environmental problems?
Lu Lianfeng believes that inappropriate, excessive use and unreasonable treatment will still have a certain impact on the environment.
He proposed that the production and development of biodegradable materials should pay attention to the conditions of degradation. Polylactic acid (PLA), polybutylene succinate (PBS) and its copolyester (PBAT) can be converted to carbon dioxide and water in 180 days under industrial composting conditions, but in soil, seawater and other environments. The degradation rate is relatively slow. Therefore, when using and promoting biodegradable materials, it is necessary to strengthen social propaganda and popularize knowledge about biodegradable materials to avoid a one-sided understanding of “degradabilityâ€.
“In addition, according to the composting conditions, the biodegradable material wastes are separately recycled and collectively composted, so as to ensure the bio-degradable materials to achieve the maximum environmental protection effect.†The “Proposal†issued by Hainan Province will improve the domestic garbage recycling. The use of the system as an independent task highlights the importance of recycling.
The large-scale production of biodegradable materials will consume the current cultivated land resources. In this regard, Lu Lianfeng suggested that China's corn stocks are relatively high. When producing starch-based biodegradable materials, using corn as much as possible can reduce the occupied farmland and help the country to solve the turnover of the reserve grain.
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