An important strategy for the sustainable developm

  • Detail

An important strategy for the sustainable development of the plastic industry: green environmental protection (IV)

sum up experiences and lessons, earnestly implement the green, environmental protection and sustainable development strategy, and create a new image of the plastic industry

1 from the prohibition of disposable foamed plastic lunch boxes

more than two years after the promulgation of order No. 6 of the State Economic and Trade Commission on January 22, 1999, On April 23 this year, the State Economic and Trade Commission again issued the "urgent notice on immediately stopping the production of disposable foamed plastic tableware" (Guo Guo Jing Mao ye ye [2001] No. 382). It can be said that the production, sales and use of disposable foamed plastic tableware have come to an end. Some experts then reminded all walks of life that "banning foamed plastic tableware is only a means, not an end", because banning white tableware is to cure white. If the old pollution disappears, New pollution has appeared again, even more serious, no doubt not because of the intention of the competent department. The total output of disposable plastic tableware is only about 50000 tons, accounting for 0.25% of the total annual output of plastic. The prohibition of production and prohibition may cause some losses to the plastic industry. Enterprises and personnel engaged in the industry should adjust the direction of products, and there may also be factory production changes, layoffs, unemployment, etc., which will bring some difficulties and impacts in a short time. However, as employees in the plastic industry, they should learn profound and valuable lessons from this event, That is, when producing your product, you must consider its whereabouts after consumption and use. If it is not solved well, it is to die. Since 1997, in order to effectively control "white pollution", the State Environmental Protection Administration has clearly proposed to solve the environmental problems caused by waste plastic products, put forward the prevention and control principle of "taking education and publicity as the guide, strengthening management as the core, recycling as the means, and product substitution as supplementary measures", and also agreed that Beijing and Tianjin should be taken as pilot cities to control white pollution, and required that the pilot cities should be examined and accepted before June 5, 1998. It can be said that the national competent departments have given sufficient time to the production enterprises of foamed plastic tableware and greatly encouraged the treatment measures led by recycling. Unfortunately, our enterprises did not cherish this rare and valuable opportunity. Before various types of substitutes were mature and relevant national standards were born, they did not come up with convincing facts and practical countermeasures. It was because we failed to grasp the initiative, retreated under the attack of various social forces, and even entered the desperate situation of being banned. During this period, the author also undertook the scientific research task assigned by the China Light Industry Association. The research results of using the "non solvent thermal medium defoaming technology" to recycle polystyrene foam passed the ministerial appraisal in January, 1998, and was evaluated as "reaching the international advanced level in the treatment and reuse technology of waste polystyrene foam". We have discussed the industrialization of this achievement with a number of enterprises, but failed. If our research results are successfully industrialized, if we can recycle polystyrene foam at the price of 2000 yuan/ton and then make recycled plastic products of tens of thousands of yuan/ton, the scattered lunch boxes will be converged as wealth like cans, beer bottles, plastic barrels and other items, and will no longer be discarded by people at will to form landscape pollution. Imagine that there is no "white pollution", and its use is safe, convenient, hygienic and cheap, which is deeply welcomed by consumers. After use, it can be collected and become a valuable renewable resource again. Why not? What is the need for governments at all levels to kill them? Unfortunately, people in our own industry are saying that during the pilot period, "due to the short time, lack of experience and too many problems to be solved, the objective facts that the pilot requirements have not been fully met, and during this period, the momentum of the spread of 'white pollution' has not been controlled". We have been regretting that our internationally advanced research results have not been put to use, that there is no mechanism for incubating scientific research results to play its due role, and that no enterprise is willing to spend a mere 80000 yuan to cooperate with us to share the burden of industrialization

2 adhering to recycling and striving to develop high-tech recycling is the only way for the plastic industry to achieve sustainable development.

the annual output of plastic products in China has reached about 20million tons, and the per capita has reached the world average level of about 18kg. China is already a large plastic country, and is moving forward to a world power. In the distribution of plastic products, plastic products for packaging account for about 1/4 of the national plastic products, and will be further developed in the future. In addition, the output of agricultural film in agricultural plastics is also important. No matter how calculated, plastic products used in these two aspects produce about 2million tons of waste plastics every year. Whether it can be used well is a major event that affects the environment and whether it has attracted more fierce criticism. In the past, the most difficult aspects in the recycling of all kinds of waste plastics were mulching films, food and drug packaging films and bags. We can't ask farmers and consumers to improve their environmental protection quality instantly, and we can't ask them to sacrifice their personal time to collect waste films for the sake of future generations at any cost. However, if we use high-tech technology to process the collected waste films into recycled plastic products with high added value or clear market use, we are bound to bear high recycling costs, Using this part of funds to raise the price of recycled waste plastic products is bound to mobilize the enthusiasm of ordinary people to collect and sell waste plastic, just as they sell waste products such as old books and newspapers. On the contrary, if the waste recycling enterprise can only use the recycled waste plastic products at a low level, it will be difficult for the enterprise to sustain itself economically, and it will be difficult to collect the waste plastic film bags and other products with low value. Recycling and resource regeneration are empty words

now there is a technology to mix waste plastics (without strict classification and thorough cleaning) with the powder of articles containing natural fibers to make composite plastic profiles, which can be used as pallets, bench chairs, guardrails, armrests and other products. The powder of these articles containing natural fibers includes wood powder, rice husk powder, cotton straw powder, peanut husk powder and so on, which are difficult to have better uses, cheap and easy to get, and encouraged to use, The raw material cost of the composite materials made of these items is about 6000 yuan/ton, but the price can reach more than 60000 yuan/ton, which not only has high added value, but also effectively turns waste into treasure

as for our technology of recycling polystyrene foam mentioned above, its recycled products are selected as polystyrene recycled foam products for heat insulation, sound insulation and water proofing. Because the new expandable polystyrene material is about 9000 yuan/ton, while our particles are only about 5000 yuan/ton, there is a lot of room for appreciation. The products are very popular with foam factories, and their uses are also very clear, For example, foamed plastic sandwich steel or aluminum alloy plates, cold storage wall plates and river bank lining plates for the roof of modern industrial buildings do not require high hygiene and color of products, but their performance can be no significant difference from that of products made of new materials. This kind of use is more cost-effective than using it as a filler for new materials, and it is also more utilized. Funds are used for recycling, forming a virtuous circle

in a word, if we want to adhere to the leading role of recycling, we must adopt high-tech to make the recycled plastics have high added value and clear use purpose, so that the enthusiasm of recycling can be driven by economic benefits and be sustained

3 we should take immediate action against all kinds of plastic wastes that have appeared and are about to appear, and manufacturers must bear the responsibility of recycling and reuse. We should be sober to see that with the improvement of people's living standards and the development of China's national economy, the upgrading of durable consumer goods such as furniture and household appliances has accelerated, Some waste plastics that we are not familiar with will be discarded more and more, such as polyurethane foam (mattresses, seat cushions), artificial leather and synthetic leather, auto parts and interior accessories, home appliance shells, communication and power cables, refrigerators, washing machines, air conditioners, televisions, and computer plastic parts and shells emerging in the information age. On the one hand, these plastic parts rarely use single component raw materials, some are inlaid with metal parts, and some have been crosslinked or coated with non plasticizing coatings; On the other hand, little is known about the identification and reuse methods of these plastic materials, which will undoubtedly increase the difficulty of reuse. For example, there is a hard polyurethane (PUR) foam layer between the inner and outer shells of the refrigerator, which not only needs to be separated from the refrigerator shell itself, but also contains a large amount of Freon foaming agent that also needs to be collected and treated, so that it can no longer escape into the atmosphere to cause harm to the earth's ozone layer. Another example is that the outer skin of wires and cables includes polyethylene and polyvinyl chloride, and the wires inside are copper or aluminum. No matter which kind of plastic is facing the problem of separation from metal materials, otherwise it will not be used. In addition, the plastic part of cables has been crosslinked in order to improve its heat resistance and weather resistance, which is more difficult to reuse. The bumper of automobile is the main plastic part of modern automobile. Its main raw material is modified polypropylene. Because the original formula already contains enough antioxidants and weather proofing agents, it can also be used as a good raw material after recycling and crushing, which slows down the problems such as lack of standards and standard age aging existing in the new material industry. But now many bumpers have been painted, and the surface often has a layer of crosslinked thermosetting film, If mixed with recycled materials, the performance of the material will be greatly affected. In addition, with the advent of the information age, the use and popularization of computers are developing at a speed beyond human imagination. Correspondingly, there are more and more discarded computers. In the United States, 20million computers were discarded in 1998, and it is estimated that 500million computers will be eliminated in 2007. If they are not recycled and recycled and enter the landfill, it will undoubtedly be another human disaster

for these plastic wastes that have appeared and will appear in large quantities in the new era, we seem to have not been prepared mentally and technically. If we don't study the Countermeasures in this regard as early as possible, we may face more problems of plastics and the environment in a few years, and more forms of "white pollution". We must never follow the old road of pollution before treatment. When producing and popularizing certain plastic products, we should consider the recycling and treatment after consumption, especially the government departments should formulate a series of measures and regulations as soon as possible. 4) the scale of the initial crack in the ceramic body is equivalent to the MM level microstructure scale. From production to sales and use, we should strengthen the education of consumers' awareness of environmental protection, To solve the problems of who pays and how to operate, no matter whether the cost is ultimately passed on to consumers, manufacturers of various products must bear the responsibility of recycling and treatment. Manufacturers should not only bear the quality of products, but also bear the responsibility of environmental protection without complaint

4 learn from foreign successful recycling experience and measures to promote the socialization of pollution control and resource transformation

in the long run, it is necessary to pay attention to publicity and startup to show that this situation occurred in 1999. Education and improving people's awareness of green environmental protection are necessary, but also necessary

Copyright © 2011 JIN SHI