Countermeasures for expanding waste paper recyclin

2022-07-27
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Countermeasures for expanding the recycling of waste paper 1. The significance of expanding the recycling of waste paper 1. The world environment is deteriorating day by day, and people's awareness of environmental protection is continuously strengthened. In order to protect the environment, reduce the load of urban solid waste treatment (about 1/3 of waste paper), reduce the logging of forest logs, and maintain ecological balance, the recycling of waste paper (also known as secondary fiber) has attracted increasing attention, especially the recycling of waste paper, It has brought many benefits to paper-making enterprises, such as saving investment, reducing cost, reducing pollution, calculating according to the usage of two pieces per month, and improving quality. According to the estimation of relevant experts, using 1t waste paper is equivalent to saving 3 cubic meters of wood, 1.2t standard coal, 600kW · h electricity and 100 cubic meters of water. Therefore, all countries in the world regard the recycling of waste paper as an important work. Some countries have passed laws and regulations requiring that certain proportion of waste paper must be contained in some papers

II. Overview of global recycling of waste paper

countries around the world are paying more and more attention to expanding the recycling of waste paper, including expanding the import of waste paper and strengthening the recycling of domestic waste paper, so as to promote the recycling of waste paper from the perspective of social public opinion and economic policies. In 1999, the world's annual output of paper was 316million tons, of which 137million tons of secondary fiber were recovered. The recovery rate was 43.69% of the consumption of paper and paperboard that year, and the utilization rate was 44.24% of the production of paper and paperboard that year, including 61.47% in Germany, 72.47% in Britain, 53.96% in France, 73.71% in the Netherlands, 81.18% in Spain, 55.19% in Japan, 79.03% in South Korea, 90.23% in Taiwan, 76% in Zhejiang and more than 60% in Guangdong. The United States is the second country with the largest fiber recovery and export volume in the world. In 1999, it recovered 42.915 million tons, with a recovery rate of 45.34% of the consumption of paper and paperboard that year. Its domestic consumption was 33.77 million tons, and 7.722 million tons were sold on the international market as commodities. According to the prediction of relevant experts, in the 21st century, the gap between the world's raw pulp output and the output of paper and paperboard will become larger and larger, and the difference will be mainly supplemented by secondary fibers. At the end of the 21st century, secondary fiber will account for about 70% of the raw materials of papermaking fiber. At present, some countries and regions have reached or exceeded this level

III. current situation and existing problems of waste paper recycling in China

1. Current situation of waste paper recycling in China

(1) waste paper recycling in China is growing rapidly with the accelerated development of the paper industry. The consumption of waste pulp has increased from 7.6 million tons in 1995 to 12.3 million tons in 2000, accounting for 41% of the total consumption of pulp, but there is still a certain gap compared with some foreign developed countries. There is a shortage of papermaking fiber resources in China, especially wood fiber, so in addition to recycling Chinese waste paper, we should actively use foreign resources. Foreign waste paper is mainly wood fiber, with good quality and high utilization value. It can improve product quality, reduce costs, reduce pollution and improve economic benefits of enterprises. In recent years, the import volume of waste paper has soared. In 1995, the import volume was 890000 tons. In 2000, the import volume has increased to 3.71 million tons, an increase of 47.8% over 2.51 million tons in 1999. In 2001, the import volume has increased to 6.42 million tons, and the import volume is still increasing year by year. Striving to ensure a considerable amount of waste paper supply market will be an important fiber raw material resource that can be expected by the recent development of China's paper industry

(2) since the reform and opening up, China has introduced more than 50 sets of waste paper treatment production lines from abroad. These imported equipment are very necessary to speed up the utilization of waste paper in China. It has greatly narrowed the gap between China's waste paper treatment technology and equipment and the world's advanced level. At present, the waste paper treatment equipment made in China is reliable, practical and reasonable in price. It is suitable for small and medium-sized enterprises

2. Problems in waste paper recycling in China

(1) waste paper recycling is accelerating throughout the country, especially in coastal areas. The current problem is that the development is uneven, and the pace of waste paper recycling in some provinces and cities is still slow

(2) waste paper is collected from different channels around the country, with mixed varieties. In addition, there is no waste paper classification standard in China, so it is not possible to purchase waste paper according to quality and price

(3) the domestic waste paper management organization is not perfect, and the laws and regulations need to be improved. At present, it is still difficult to completely recycle and treat waste paper according to the waste paper classification standards

(4) at present, the vast majority of waste paper in China is imported from the United States, while the annual export volume of waste paper in the United States is about million tons. In 2001, the total amount of waste paper imported by China reached 6.42 million tons. Therefore, in order to meet the demand of domestic enterprises for waste paper, it is far from enough to rely solely on imports from the United States

(5) in recent years, China, including about 20billion plastic bags and 7billion bubble bag light industrial machinery plants and scientific research departments, has done a lot of work on the research and development of waste paper treatment equipment, but it is still far from meeting the needs of production enterprises, especially the large and efficient waste paper treatment equipment, which is almost completely imported at present

(6) over the years, great achievements have been made in the recycling of waste paper, especially waste paper and corrugated packaging board. However, the treatment technology and equipment for mixed office waste paper, old magazine paper and color waste paper still need to be promoted and applied

(7) the waste water and waste residue from the treatment of waste paper should be taken seriously, especially in small and medium-sized enterprises, the treatment device is relatively simple, and the use of chemicals is not reasonable, so it is difficult to make the discharge of waste water and waste residue from deinking waste paper meet the requirements of environmental protection. In the world, there are already factories that use waste paper as raw material to produce packaging paperboard, which meet the requirements of zero discharge of waste water

IV. ideas and Countermeasures for expanding waste paper recycling during the Tenth Five Year Plan period

1. Promoting waste paper utilization and accelerating development

during the Tenth Five Year Plan period, the development goal of China's paper industry is that by 2005, the consumption of paper and paperboard will be 50million tons, the annual production of paper and paperboard will be 40million tons, and the amount of waste pulp accounts for 45% of the total pulp consumption, that is, 18million tons, and about 20million tons of waste paper will be needed. Therefore, in the future, the use of waste paper will not only increase significantly in quantity, but also have a new improvement in quality, variety, recycling methods, treatment technology, waste water and waste residue treatment, so as to promote the accelerated development of waste paper utilization

2. Strive to do a good job in domestic waste paper recycling.

due to the rapid growth of domestic paper consumption, it is possible to increase the number of recycled waste paper. The current problem is to establish a good recycling system for waste paper, waste kraft paper and waste corrugated packaging board. For the office paper of state organs and some large and medium-sized commercial and office institutions, it is necessary to establish a good recycling system, and it is best to assign a special person to manage it; Recycling of household, industrial and store packaging paper should also be strengthened. Try to achieve classified recycling and treatment to ensure the rational utilization of waste paper resources

3. Make full use of foreign waste paper resources

as a commodity of international bulk trade, waste paper has only a history of years. The resources are mainly in high consumption North America and Europe. In addition to local trade, waste paper mainly flows to Asia. The world's waste paper export trade volume is about 16million tons, of which the United States has the largest export volume. With the improvement of environmental protection and resource awareness, countries will strengthen the use of their own waste paper. Due to the large amount of waste paper in China and its rapid growth, in addition to continuing to increase imports from the United States, we should also consider increasing imports of waste paper from other countries (such as Western Europe and Japan). He made a performance comparison of several typical composite materials

4. Speed up the research and development of large and efficient waste paper treatment equipment

large and medium-sized enterprises and enterprise groups should actively cooperate with domestic equipment manufacturers while introducing foreign advanced technology and equipment, effectively organize digestion and absorption, and drive the manufacturing level of domestic equipment to be high. We should speed up the development of large and efficient complete sets of equipment and related instruments and automatic control devices

5. Actively research and develop technical equipment for office waste paper

due to the complex treatment technology of office paper, the treated pulp can be used as a high-grade paper ingredient or as a surface layer of coated white paperboard and high-grade household paper, with high utilization value. However, there is not much successful experience in the whole process in China. Therefore, research and development should be organized

6. Widely used chemical additives

as waste paper has been used for times, some even repeatedly, there are problems such as reduced fiber strength, poor whiteness, more fine fibers, and high chemical content. Domestic and foreign paper-making enterprises are using chemical additives to improve and enhance the utilization value of waste paper. At present, we should focus on new deinking agents, reinforcing agents, detergents and bleaching agents for waste paper treatment

7. Strengthen pollution control and do a good job in sewage and waste residue treatment

although using waste paper for pulping and papermaking can reduce pollution compared with primary fiber, it does not mean that there is no pollution, especially in the deinking process of waste paper, the discharged sewage and waste residue are still serious. In order to meet the requirements of environmental protection, enterprise groups with strong financial strength can consider appropriately introducing foreign advanced technology and equipment; Domestic environmental protection equipment manufacturers and scientific research departments should also speed up the research and development of new sewage treatment equipment, so as to ensure that waste paper produces little or no secondary pollution in the treatment process, and realize the complete closed circulation of waste paper pulping and papermaking waste water in the production of natural color packaging paperboard. There are precedents at home and abroad to achieve zero or near zero discharge of wastewater

8. Speed up the formulation of waste paper recycling classification standards and related standards

some foreign advanced paper-making countries have formulated waste paper recycling classification standards in trade. China's waste paper classification standards and related standards approved by the Ministry of science and technology of the people's Republic of China, including waste paper recycling classification, determination of adhesive content in waste paper, determination of ink residue in waste paper pulp and other standards, are paying close attention to the system. After the completion of this work, it will be of great significance to the recycling and classification of waste paper in China and the pricing of imported waste paper according to quality

waste paper recycling has been mentioned as an important agenda for the development of the paper industry. The waste paper recycling cooperation center should strengthen cooperation with relevant departments, hold seminars and information conferences from time to time, hold technical training courses, and organize experts to help enterprises solve problems in production. Provide technical consultation and technical services for enterprise technical transformation, technical research, equipment selection, project approval demonstration, equipment installation, commissioning, product development and enterprise development

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