The paper industry in Fuyang City, Zhejiang Province has achieved success in implementing circular economy.
the paper industry in Fuyang City, Zhejiang Province, accounts for the vast majority of medium and low-grade paperboard, with a total output of more than 2 million tons. It is "China's white paperboard base". Papermaking accounts for more than 20% of Fuyang's industrial output value and has become the lifeline of Fuyang's economy. However, while making contributions to the local economy, "Fuyang papermaking" has also become an "environmental killer": the wastewater from papermaking is directly discharged into the Fuchun River or its tributaries, seriously polluting the water quality and affecting the drinking water quality of more than 3 million people in Hangzhou downstream. In the face of the "ancestral industry" with high consumption, high pollution and low efficiency, Fuyang City dares to take the lead in the industry, and has found a new way to transform the "big polluter" into a "typical circular economy", which is widely praised by the society
the paper industry in Fuyang City, Zhejiang Province focuses on building an industrial system of circular economy at the three levels of "point, line and area", and implements the transformation of circular economy for "Fuyang paper industry"
establish a small cycle on the "point" of enterprises
"Fuyang papermaking" is characterized by small and medium-sized private enterprises, with grass and bamboo as the main raw materials. Straw pulp papermaking requires a large storage site and high transportation cost of straw. Therefore, the scale of straw pulp papermaking plant is very small, the level of technical equipment is low, and the pollution control capacity is weak
as the "cell" project of circular economy, Fuyang first strengthens the role of enterprises as the main force in circular economy. 76 production lines of 68 enterprises with a production capacity of less than 10000 tons of white paperboard and less than 2000 tons of thin paper were shut down. At the same time, three paper-making functional parks, Lingqiao, Chunjiang and Dayuan, are planned to centralize the reserved enterprises in the park for centralized heating, water supply and pollution control. The five sewage treatment plants of "Yongtai", "Bayi", "Chunnan", "Dayuan" and "Lingqiao" with an investment of 1.4 billion yuan have formed five unified discharge outlets, and the sewage outlets of all other enterprises are blocked. At present, the Fuchunjiang environmental thermal power, Zhejiang Sanxing thermal power and Gaoqiao thermal power projects under construction have initially realized continuous heating, making the self built small boilers of enterprises withdraw from the historical stage
establish the medium circulation in the papermaking production line
the participants are required to register: the black liquor of straw pulp has high silicon content, high viscosity, poor water filtration performance, low alkali recovery rate, and large water consumption. Therefore, the circular economy of "Fuyang papermaking" has implemented the principle of reduction from the source of papermaking. It has taken the lead in banning traditional raw materials such as self-made straw pulp and bamboo pulp in the country and used waste paper for papermaking. At present, Fuyang has a nationally famous Jiangnan waste paper market. According to statistics, the daily turnover of the waste paper market is about 50000 tons. Fuyang paper enterprises consume about 3million tons of waste paper every year, accounting for more than 10% of the national annual waste paper consumption
Zhejiang Fuyang Yongtai Paper Group is the largest paper-making enterprise in Fuyang, with an annual production capacity of 200000 tons, ranking the 22nd among the national key paper-making enterprises and the third among the industries in Zhejiang Province. It is one of the largest township enterprises in China's paper-making industry. The enterprises basically use waste paper to replace straw pulp and wood pulp as papermaking raw materials. In 2005, more than 180000 tons of waste paper were consumed. At present, the enterprise is preparing to build a production line with an annual output of 200000 tons of coated kraft cardboard. It also points out the direction for the development of China's plastic granulator technology.
therefore, recycling waste paper for papermaking makes "Fuyang papermaking" obtain the "green pass" of circular economy
at the same time, "Fuyang papermaking" strengthened the treatment of wastewater in the papermaking process. For example, Zhejiang Fuyang Yongtai Paper Group invested 55.78 million yuan to build a Chunjiang sewage reuse project with a daily treatment capacity of 45000 tons in September 2003, using a/o biochemical treatment process. From the aspects of process flow, technical innovation, equipment management, etc., the sewage discharge in the production process is controlled in an all-round way. After the sewage is reused, 80% of the sewage is reused for production. Moreover, the discharged water is completely pollution-free, and the clear water can be used for fish culture. In order to reduce the "white water" pollution, they installed advanced fiber recycling devices on the paper machine, so that a large number of fibers can be reused. In the past, a large number of white water had to be discharged. Now 80% of the white water has been recycled. The annual recycled 400t fiber raw materials have increased the income by 600000 yuan; The sludge after sewage treatment is comprehensively utilized, and the recovered calcium carbonate has become a high-quality filler for papermaking, eliminating the secondary pollution caused by sludge, increasing the annual income by millions of yuan, thus achieving environmental and economic benefits
it is a technical problem to establish the recycling and reuse of packaging waste and realize a large cycle in the "face" of ecological economy.
the recycling of waste packaging materials is a large number of packaging materials are discarded in vain, resulting in secondary environmental pollution. However, in the concept of circular economy, there is no concept of waste. All waste is a resource that has been misplaced. Fuyang paper making enterprises have made some wastes realize their own value by developing circular economy and relying on science, technology and innovation. Fuyang Fulun paper factory separates high-quality long fiber wood pulp from the perishable waste beverage boxes to make paper, which is processed into cartons, envelopes, paper bags, books and other products. How to turn the aluminum plastic part (aluminum 20%, plastic 80%) of high-quality milk boxes from the high speed of development into plastic particles after processing, and become a good raw material for flowerpots, sewage pipes and other plastic products
"entrepreneurship should be profitable, but profits must be based on environmental protection. This is an industrial trend." Fuyang paper enterprises have their own interpretation of circular economy. The main product structure of "Fuyang papermaking" is medium and low grade paperboard. In order to meet the needs of the market, "Fuyang papermaking" must speed up the structural adjustment of the paper industry, improve the ecological industrial chain of papermaking, speed up the research on technical support and other measures, and promote the sustainable development of Fuyang papermaking industry
the structure of waste paper raw materials must be optimized
waste paper accounts for 50% ~ 60% of China's papermaking raw materials, but most of them rely on imports. For example, a Shanghai enterprise used 25500 tons of waste paper in 2004 and 30000 tons of waste paper in 2005, all of which were deinked from No. 37 waste paper imported from Japan. This is mainly because: (1) straw fiber still accounts for about 30% of domestic papermaking raw materials, while straw pulp is basically not used in foreign papermaking. Therefore, there is a significant gap between domestic waste paper and imported waste paper in terms of strength. Many large-scale enterprises with high-grade product varieties are unwilling to use domestic waste paper; (2) domestic waste paper recycling is not satisfactory. The recovery rate of waste paper in China is only 30%, which is not classified. In addition, human damage factors, such as malicious addition of water, mixing of stone cement, food waste, etc., and some even add iron to damage papermaking equipment. "Fuyang papermaking" uses a large number of domestic waste paper as raw materials, and the paper produced is of low quality. Therefore, in order to improve the quality of paper, on the one hand, we should call on the government to make regulations on waste paper recycling and strengthen the public's understanding of circular economy; On the other hand, enterprises should sort out the recycled waste paper, speed up the development of new technologies and processes, and actively adopt new equipment
take the road of "Forest Pulp paper integration"
in the world's paper and paperboard output, the utilization of wood fiber is about 95%, while China's domestic wood pulp is only about 18%. In order to improve the quality of paper, we must take wood pulp papermaking as the basis. Wood papermaking is the only way for the development of papermaking. "Integration of forest, pulp and paper" refers to the core idea of accelerating the renewal of plastic granulator technology through "green big cycle of afforestation, pulp and paper making and small cycle of waste paper recycling", using ecological laws to guide afforestation, pulp and paper making, and realizing circular economy. Many years ago, people worried that papermaking with wood would damage the ecology. However, the development of the world paper industry over the years has proved that the paper industry not only did not damage the ecology, but also promoted the ecology. Of course, the essence of "Forest Pulp paper integration" is that the enterprises producing wood pulp must rely on the power of the factory to self operate the high-yield forest base. The forest land and the paper factory belong to the same business entity. At present, some enterprises in China have experience in this field. For example, app of Jinguang group, the largest paper industry group in China, has planted 266700 hm2 of plantations by August, 2005, mainly in South China, and is the most powerful promoter of "Forest Pulp paper integration" in China; Chenming and Huatai also built more than 66700 hm2 of artificial forest land; According to the statistics of Meili group, if the 66700 hm2 fast-growing forest base can be built, the raw material demand of Meili Paper industry can be fully guaranteed. Cutting and planting can not only protect the ecology and increase farmers' income, but also reduce enterprise costs and greatly improve the quality of paper
source: Zhonghua paper