Analysis of circular economy concept II of polysty

2022-06-09
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An analysis of the circular economy concept of polystyrene foam tableware (II)

2.2 overview and problems of the development of alternative tableware? In recent years, PP based tableware and multi-layer tableware have not been completely replaced by paper-based tableware and polypropylene based tableware, although the production of PP based tableware and multi-layer tableware has not been stepped up; There are still many problems in some application performance or hygienic performance. Compared with the cheap and beautiful PSP tableware which has been widely favored by consumers for a long time, its basic conditions such as mechanical properties, thermal insulation, hygiene and safety are greatly inferior, except that it is easy to degrade or treat after use; Some are expensive, times higher than PSP, and it is difficult to obtain consumer recognition according to the market law, which brings great difficulty to the promotion and application. It also makes China's fast food packaging in an embarrassing situation of being out of stock

in order to meet the market rules, some enterprises do not tap their own potential, improve quality and reduce costs, but adopt the method of cutting corners on work and materials. Due to lax law enforcement and weak supervision, substitute products with inferior quality and high price flooded the market, resulting in the negative impact of consumers' serious dissatisfaction with some substitutes. At present, the output and consumption of pulp molded tableware and photo/biodegradable PP tableware are large, accounting for about 60%, The former is mainly used on railway trains. According to the random inspection results of tableware joint cooperation Technical Supervision Bureau, a considerable part of pulp molded tableware seriously exceeds the standard in evaporation inspection, does not meet the health requirements, and has serious oil seepage, water seepage and deformation. Photo/biodegradable PP tableware is mainly used in fast food industry and restaurants in most parts of the country, but some manufacturers of these products add a large number of inorganic powder materials in order to reduce the cost. Wood plastic composites that can play their due role have also developed rapidly (such as calcium carbonate, talc powder, etc.), resulting in unqualified mechanical properties, serious excessive evaporation residue, and some exceeding the standard by up to 200 times. What's more, some unscrupulous businessmen seized the opportunity that PSP tableware was completely banned, a considerable part of the substitute quality was inferior and the price was high, and the market appeared in short supply. They produced and sold fake and shoddy tableware. They also "fished in troubled waters under the banner of environmental protection tableware, deceived the majority of consumers, resulting in the loss of trust of many substitutes to the people, and the situation of quality and price confusion in the fast food packaging market"

according to the survey and statistics of relevant departments, the annual consumption of fast food boxes in China is about 12 billion, instant noodle bowls are 3 billion, disposable cups are 8 billion and disposable trays are 5 billion, with a total demand of about 28 billion. However, among the tableware available on the market, only% are qualified alternative tableware, and 20% are PSP tableware, of which more than half are unqualified products. Therefore, it is difficult to meet the demand in terms of quality and quantity

according to another survey, the daily consumption of disposable fast food tableware in Beijing is more than 2 million, and the annual consumption is about 700 million. At present, PSP tableware still accounts for 20% of the market share, while environmental friendly tableware meeting health requirements accounts for only 21%, and tableware with quality problems, especially health and safety problems accounts for 60%

from the above analysis and survey data, it can be seen that the supply-demand relationship of China's fast food packaging industry is relatively serious and there are many problems. How to solve them is a problem that the relevant leading departments must pay attention to, the fast food packaging industry must face and the majority of consumers are very concerned about

3 face up to several problems and get out of several misunderstandings

since the late 1990s, the problem of polystyrene foamed tableware has been escalating, From being initially accused of "white pollution" to "environmental disaster more serious than nuclear power plant accident or oil spill" (at the founding meeting of the national leading group for the replacement of convenient food packaging at the end of 1999, Beijing XXX company put forward this in the first sentence of the green publicity material volume distributed at the meeting: "The biggest man-made environmental disaster at the end of this century is not the explosion of Chernobyl nuclear power plant or the oil spill caused by the Gulf War, but cheap white foam plastic tableware"). Then, it will be upgraded from environmental disaster to that when it is above 65 ℃, it will release strong carcinogen dioxin and contain a variety of harmful toxins. Someone once claimed: "in the past, people usually thought that banning disposable foamed plastic tableware was for environmental protection. The latest research by experts found that foamed plastic would also produce toxic substances at high temperature." banning white "is actually" anti drug ". In addition, the process of using freon (CFCs) as foaming agent has been improved, and it is still accused of destroying the atmospheric ozone layer... And so on. Some of these false information, false reports and accusations without scientific basis do not know the truth and follow others; Some of them are groundless; Others are motivated by commercial competition and have ulterior motives. Although the relevant departments have organized and held many meetings over the years and listed a large number of facts and data to explain and clarify these strange theories, due to their wide spread poison, many consumers are still trapped in their ideological misunderstandings, and a few people with ulterior motives take them as the main shells for replacing plastic with paper or destroying PSP tableware. In order to clarify the truth and explore the prospect of PSP tableware returning to the market, we list relevant materials and research conclusions, and analyze several related problems of PSP tableware being banned: PSP and white pollution, PSPS and toxic and harmful theory, PSP and recycling, so as to dispel doubts and return the innocence of PSP tableware

3.1 PSP tableware and "white pollution"

for quite a long time in the past, some public opinion equated PSP tableware with "white pollution", even regarded it as the culprit of "white pollution" and was roundabout denounced, until an order was issued to prohibit production and application. We believe that we should first face up to what is "white pollution"

with economic development, scientific progress and the continuous improvement of people's living standards, the consumption of plastic products is increasing day by day. These plastic products, especially the ultra-thin plastic packaging bags widely used in farmers' markets and supermarkets, disposable plastic fast food tableware widely used in catering industry, and plastic mulch widely used in agricultural production, are not easy to be absorbed in the environment after use. A considerable part of these plastic wastes are scattered in urban areas, scenic tourist areas, water bodies, both sides of Railways and other natural environments, seriously affecting the landscape and polluting the environment, It is vividly compared to "white pollution", and the main reasons for "white pollution" are:

◎ plastic waste has not been properly managed and treated, such as arrears of urban sanitation infrastructure, serious shortage of waste collection containers and disposal facilities; Garbage is not collected by classification, and those that can be recycled are not fully recycled; The final disposal method of garbage is garbage moving, which basically stays at the level of bare stacking; Some towns use rivers, rivers and lakes as natural waste dumps

◎ in the window industries such as transportation and tourism, except the railway system, the garbage collection system matching the production and operation has not been established, and the garbage generated in the operation process is allowed to flow freely

◎ weak management, lack of relevant laws and regulations on plastic packaging waste, and people's weak environmental awareness, resulting in widespread abuse and random littering

"white pollution" mainly refers to the two negative effects of "visual pollution" and "potential natural harm" to the environment

visual pollution refers to the damage of plastic waste scattered in the environment to the city appearance and landscape, such as PSP plastic lunch boxes scattered in the natural environment, on both sides of railways, rivers and lakes and ultra-thin PE plastic bags flying or hanging branches. These bring adverse stimulation to people's vision, which is called "visual pollution". The people reacted strongly to this

potential hazard refers to the long-term deep-seated environmental problems caused by the difficulty of degradation of plastic waste after entering the natural environment. Its harm includes the following aspects

◎ plastic film waste accumulates in a large area of soil for a long time, resulting in soil hardening, affecting the absorption of nutrients and water by crops, resulting in crop yield reduction

◎ plastic waste discarded on land or in water is swallowed by animals as food, resulting in death

◎ the plastic waste entering the domestic waste is difficult to treat due to its light weight and large volume. If it is buried, it will occupy a large amount of dry land in summer, and it is not easy to degrade for a long time, which will affect the final measurement results. The domestic waste mixed with plastic is not suitable for composting treatment. At present, the strongest reflection in society is "visual pollution", and most people still lack enough understanding of the "potential harm" of plastic waste to the environment

the term "white pollution" is not scientific and rigorous in terms of formulation, but as a description of a phenomenon, it is understandable to reflect the concerns of the general public about environmental pollution control. However, at present, the term "white pollution" only refers to disposable plastic wastes such as PSP tableware is not comprehensive and unfair. In recent years, many substitutes have been developed, such as paper, pulp molding, plant fiber, whole starch based catering utensils. Although they use natural materials as raw materials and are relatively easy to decay and degrade after use, the addition of waterproof and oil proof agents increases the difficulty of decay and degradation of their wastes. Practice has proved that they need a certain period to return to nature after use, and the speed of degradation depends on environmental conditions to a great extent. Therefore, the waste of any kind of degraded disposable tableware and disposable products of any material should be collected and treated, and should not be thrown around, so as to avoid the repetition of new "white pollution". PSP tableware should be taken as a warning. Therefore, the exact definition of "white pollution" should be: no matter what kind of disposable consumer goods are made of, if their wastes are not properly recycled and treated, they are allowed to be discarded everywhere, resulting in pollution and harm to the city landscape and ecological environment. Therefore, PSP tableware ≠ "white pollution" is not the culprit of "white pollution". The cause of "white pollution" is poor management and people who throw away garbage at will, not the material itself

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