With the arrival of a new round of rapid economic growth, some developed areas in the east are short of energy and raw materials, which provides a rare opportunity for the development of resource-based industries in the western region. While speeding up development, how to keep the economy, environment and resources in harmony, realize the harmonious coexistence between man and nature, and embark on the development road of production development, affluent life and good ecology is a subject that we must seriously treat and study. Circular economy, as an important breakthrough in economic development theory, overcomes the shortcomings of traditional economic theory that separates economic and environmental systems, requires the use of natural resources and environmental capacity in an environmentally friendly way, realizes the ecological turn of economic activities, and provides us with a new economic development model. 1. Developing circular economy is an inevitable choice to realize sustainable development and a realistic model for the international community to promote sustainable development. It emphasizes the most effective use of resources and the protection of the environment. In the whole process of resource input, enterprise production, product consumption and its abandonment, the economic system is reconstructed by using ecological laws, and cleaner production, comprehensive utilization of resources and their wastes, ecological design and sustainable consumption are integrated. The economic system should be harmoniously integrated into the material cycle of the natural ecosystem, and the traditional open-loop economy of "resource-product-waste discharge" should be transformed into a closed-loop economy of "resource-product-waste-renewable resources", so as to realize the ecologicalization of economic activities, minimize pollution discharge in production and consumption, recycle waste and make it harmless, and obtain the maximum economic and environmental benefits at the lowest cost, thus realizing economic growth and social progress. The industrialization history of developed countries and the development process of China have experienced serious environmental problems caused by large-scale production, large-scale consumption and large-scale waste. The area of Jiuquan Gobi Desert accounts for 70%, and the per capita water resources are less than 2/3 of the national average and 1/6 of the world average. The forest coverage rate is only 1.4%, far below the national and provincial average. The ecological environment is fragile and the self-purification ability is not strong. However, for a long time, due to the exploitation of mineral resources, over-reclamation, resettlement development, over-grazing, over-exploitation of groundwater and other factors, land desertification, river depletion, wetland reduction, natural ecological vegetation has been seriously damaged, especially industrial "three wastes" and urban domestic wastewater and garbage discharge, resulting in rivers, reservoirs and atmospheric pollution, which has affected the sustainable development of economy and society. Since the implementation of the western development strategy, although the ecological environment has improved, and the total amount of pollutant discharge has decreased year by year, the economic growth is mainly driven by investment, and the utilization rate of resources is low, showing obvious extensive characteristics of high input, high consumption, low quality and low efficiency, and the ecological environment pressure is still great. If we continue to follow the traditional road of economic development, maintain economic growth with the extensive mode of "three highs" (high consumption, high energy consumption and high pollution), and take terminal treatment as environmental protection means, the limited resources will be rapidly exhausted, the environmental situation will further deteriorate, and the resource stock and environmental carrying capacity will seriously restrict economic and social development. It is urgent to protect the natural resources on which we depend, accelerate the construction of a resource-saving society, promote economic development and rebuild the ecological environment. Therefore, we must change the traditional development model, develop circular economy, and ensure the sustainable support of water and soil resources and mineral resources for economic development. Second, developing circular economy is an important strategy to change the mode of economic growth. Our city is rich in mineral resources, with excellent light and heat conditions for agricultural production, and good material foundation and comparative advantages for economic development. After years of development, the mining and processing of mineral resources and agricultural products have begun to take shape and become the pillar industries of the local economy. However, the level of resource development and utilization is not high, the industrial level is low, the product chain is short, the agricultural product processing industry is still in the primary product stage, and the development and utilization of mineral resources basically stays at the mining level. The value-added rate of agricultural products processing and transformation is only 25%, which is equivalent to the national average 1.2, and the processing industry only accounts for 1 1.8% of heavy industry, which is 29.3 percentage points lower than the national average, which is typical. According to relevant data, China's energy consumption per unit output value is 2.3 times of the world average, the energy consumption per unit of major energy-consuming products is 40% higher than the advanced level abroad, and the energy consumption of industrial products and raw materials accounts for about 75% of the production cost of enterprises. Restricted by the low level of technical equipment and industrial marginalization, the problem of high consumption of energy and raw materials in our city is more prominent. This extensive mode of economic growth is not conducive to the harmonious development between man and nature and the sustainable development and utilization of resources. At present, the economic development of our city is in the initial stage and the critical period of undertaking industrial gradient transfer. Compared with the developed areas in the east, the cost of establishing an environmental economic system is lower, and we can give full play to the advantages of backwardness, plan and construct ecological industrial chains and ecological industrial parks according to ecological principles, realize the sustainable utilization of resources, and realize the transformation of economic development from quantitative growth to quality growth. At the same time, developing circular economy is also an important strategic measure to extend the processing chain of mineral products and agricultural products, upgrade the industrial structure, increase employment opportunities and realize the transformation from the export of primary raw materials to the export of deep-processed products. Third, developing circular economy is an objective requirement to enhance industrial competitiveness. Practice has proved that the low level of resource utilization and the economic cost of pollution discharge have become important obstacles for enterprises to reduce production costs and improve economic benefits and market competitiveness. The theory and model of circular economy development based on ecology make it possible for enterprises to improve the efficiency of resource utilization and minimize the payment of environmental damage. Especially with the establishment and popularization of green GDP theory, the pace of improving efficiency by relying on circular economy has obviously accelerated, and it has become the mainstream mode of economic activities in developed countries. Germany is a pioneer country in developing circular economy. As early as 1972, the waste disposal law was promulgated. At present, the annual output value of waste utilization is 40 billion euros, and the number of employed people reaches 240,000. The United States formulated a series of energy policies aimed at recycling in the 1970s, and the environmental protection industry reached $654.38+000 billion in 2000. In Japan, which is short of resources, in order to cope with the increasing shortage of energy and raw materials in the international market and the rising price trend, the "Environmental Protection Congress" in 2000 proposed to develop environmental protection industries and circular economy system as an important content to improve Japan's economic structure and enhance industrial competitiveness, accounting for nearly two-thirds of the global environmental protection industry market of 600 billion US dollars in 2000. EU countries, Australia, Canada and other countries have successively formulated waste management laws and regulations in accordance with the principle of closed recycling of resources and avoiding waste generation. From the practice of our country, since the promulgation and implementation of the Cleaner Production Promotion Law in 2002, Guigang and other places have established 10 eco-industrial parks according to the production organization mode based on ecological principles, making the "waste" of upstream enterprises become the raw materials of downstream enterprises, effectively controlling and reducing pollution emissions. From the point of view of our city, in recent years, it has also achieved certain results in developing clean production, circular economy and environmental protection industry. For example, Aksai County, Beijing Campus of China University of Mining and Technology and Southwest University of Science and Technology have jointly developed a relatively complete closed-loop ecological industrial chain, from selecting modified fibers from waste asbestos tailings to extracting chemical products such as superfine silicon dioxide, magnesium hydroxide, iron hydroxide, basic magnesium carbonate whiskers and ammonium sulfate, and then processing the remaining minerals into light building materials, so that by-products and wastes from upstream production links become raw materials for downstream products, and the utilization rate of asbestos tailings is close to 100. Green energy projects such as Yumen wind power and orange stalk gas have been completed, which has brought good economic benefits. Cleaner production, such as recovery and utilization of oil production wastewater in Yumen Oilfield, power generation with waste heat from coal ash heating in Yumen Thermal Power Plant and new building materials, power generation with waste heat from sulfuric acid production line in Hexi Chemical Plant, and plastic recycled particle project in Dunhuang City under construction, has reduced pollutant emissions through the reuse of energy and waste, and achieved good social, economic and environmental benefits. Judging from the development trend of economic globalization, the role of tariff barriers is weakening day by day, and the role of "green barriers" in international trade is increasingly prominent. Enterprises are facing more intense market competition and environmental factors. Some developed countries not only require end products to meet environmental protection requirements, but also stipulate that all links from product development and production to packaging, transportation, use and recycling should meet environmental protection requirements. Therefore, only by vigorously developing circular economy and promoting clean production can product production reach international standards in terms of resources and environmental protection, break through "green barriers" and expand foreign trade; Only in this way can the contradiction between economic development, ecological construction and environmental protection be alleviated. Only in this way can we realize the transformation of economic growth mode, improve economic benefits and enhance market competitiveness. Fourth, the development of circular economy must be guided by scientific industrial policies. Circular economy is the product of human re-understanding nature, respecting objective laws and exploring economic laws under the severe situation of global population explosion, resource shortage, environmental pollution and ecological transformation. To develop circular economy, we need to build a brand-new concept of development, system, values, production and consumption, and we must take the government as the leading factor to establish the concept of circular economy in which resources are continuously recycled at all levels of social and economic life. For Jiuquan, which has a large proportion of resource-based industries, weak environmental carrying capacity and underdeveloped economy, the task of changing the mode of economic growth, improving the efficiency of resource utilization and coordinating the harmonious development between man and nature is even more arduous and urgent. We must take Scientific Outlook on Development as the guide, take building a resource-saving society and reducing waste emissions as the goal, take optimizing the way of resource utilization as the core, take technological innovation and institutional innovation as the driving force, make overall plans, adjust measures to local conditions, highlight key points, comprehensively promote clean production, vigorously advocate green consumption, take practical and effective measures, mobilize all forces, and accelerate the construction of a sustainable resource-saving society. At present, we should focus on five aspects: 1, and accelerate the research and formulation of circular economy development strategy. Strengthen the research on relevant theories and practice modes, raise the awareness of governments at all levels and relevant decision-making departments on the importance of developing circular economy, hire experts and scholars to study and formulate the development plan of circular economy in the whole city, and carry out industrial ecological layout demonstration focusing on Jiuquan High-tech Industrial Park, Yumen Dongjianhua Industrial Park, Yumen Electric Metallurgical Industrial Park, Axel Asbestos Industrial Park and Liuyuan Mineral Products Processing Trade Park. Re-examine the industrial orientation, environmental protection access, whether the settled enterprises have industrial relevance, whether they can form an industrial organization with resources, whether the wastes from the upstream production link can become raw materials and energy for the downstream production link, formulate the development plan of the eco-industrial chain in the industrial park, gather enterprises and projects with complementary functions, and promote the formation of an eco-industrial chain or industrial cluster. Actively strive for pilot cities of circular economy, innovate planning and design concepts, and give priority to major industrial projects with clean production technology and projects with terminal treatment as the source of prevention in accordance with the principle of "reduction, reuse and recycling" when formulating the Eleventh Five-Year Plan and long-term development plan, and plan to build a number of eco-industrial chains, eco-industrial parks and circular economic circles. In rural areas, we will focus on developing green food and organic food bases, vigorously promote industrial layout, standardized production and large-scale operation, and promote the development of a number of agro-ecological industrial parks for planting, breeding and energy (biogas energy, straw gasification, etc.). ) .2. Explore the establishment of an institutional guarantee system. Make full use of the guiding role of national macro-industrial policies, study and formulate institutional mechanisms and policy environment conducive to promoting the development of circular economy, and establish and improve local regulations and normative documents for saving resources and protecting the environment as soon as possible. Take environmental protection as the goal of economic and social development, formulate and improve the environmental protection access system, clean production system and waste recycling system for industrial park projects according to ecological principles, incorporate the development of leading industries and the cultivation of industrial clusters into the ecological industrial chain, encourage and support projects that can connect upstream and downstream industries and comprehensively utilize resources, resolutely reject projects that do not meet the industrial development plan of the park, and prevent the enterprises in the park from being "a hodgepodge". Combined with the reform of the investment system, we will improve the preferential policies for comprehensive utilization of resources and give strong support to cleaner production technology and circular economy pilot parks from the aspects of finance, taxation, finance, investment, environmental protection and technology. Adhere to the combination of encouragement and restriction, strengthen law enforcement supervision, strengthen sewage charges, especially use economic incentives and penalties to promote enterprises to carry out cleaner production and develop circular economy. 3. Efforts should be made to promote industrial restructuring. We should give priority to the orderly development and comprehensive utilization of resources, resolutely put an end to the introduction of high-pollution projects, vigorously develop the tertiary industry and high-tech industries with low energy consumption and low emissions, and focus on supporting the development of new energy sources such as wind power generation, straw gasification and biogas, the intensive processing of mineral products and agricultural products, and the development of tourism, chain operation, logistics distribution and information consultation. Through technology introduction, joint research, grafting transformation and other measures, we will accelerate the transformation of traditional industries with high and new technologies and advanced applicable technologies, eliminate backward processes, technologies and equipment, strictly limit industries that consume high energy and water and waste resources, extend the processing chain of products such as minerals, building materials, chemicals and cotton livestock products, promote the docking of resources among enterprises, build a number of regional resource reproduction enterprises, and improve the comprehensive utilization level of resources. 4. Preferential development of a number of eco-industrial projects. Pilot projects of cleaner production technology and eco-industrial chain have been widely carried out in key industries, key fields and industrial parks. By selecting the best to help the strong, focusing on cultivating and developing enterprises with recycling mode of resources, we will demonstrate the establishment of a new framework of intensive and ecological industrial system. For example, take Axel Institute of Nonmetallic Minerals and Asbestos Institute of Yun Xin Company as the core, speed up the industrialization of research results of comprehensive utilization of asbestos tailings, and turn the asbestos industrial park into an eco-industrial park integrating asbestos, chemicals, light building materials and thermal insulation materials. More than 6,543.8 billion cubic meters of asbestos tailings abandoned for many years will be brought into play as soon as possible. The sewage treatment plant project in Nanjiao Industrial Park should consider building a clean reclaimed water supply system, which should be linked with enterprises with low water quality requirements in and around the park to realize the optimal allocation and utilization of reclaimed water. Support domestic sewage treatment plants in Jiuquan City and counties and cities, introduce advanced and mature technologies, and utilize sludge and reclaimed water resources to make reclaimed water be used for urban greening and agricultural irrigation, and sludge be used for processing and producing organic compound fertilizer. Encourage Yumen Electric Metallurgical Industrial Park to cooperate with hydropower, wind power, ferrosilicon plant, steel plant, concentrator and building materials production enterprises to realize the recycling of fly ash and ore tailings and reduce the discharge of solid waste. 5. Strengthen organizational leadership and publicity. Governments at all levels should strengthen the organization and leadership of circular economy development, establish an effective coordination mechanism, and promote clean production and comprehensive utilization of resources step by step. It is necessary to organize various publicity and education activities, actively advocate the use of environment-friendly products, reduce the use of disposable products, raise the awareness of saving resources and protecting the environment of the whole people, make the ecological values of harmonious coexistence between man and nature deeply rooted in the hearts of the people, turn energy saving, water saving, material saving, grain saving and garbage recycling into the conscious behavior of every citizen, gradually form a lifestyle and consumption pattern of saving resources and protecting the environment, and create a good social environment for developing circular economy and building a resource-saving society.