Qianlong. com, Beijing, May 20 th, how to coordinate ecological elements such as mountains, rivers, fields, lakes and grasses and implement ecological restoration and environmental protection projects from the perspective of the integrity of the ecosystem and the systematicness of the Yangtze River Basin? Committed to the pollution control in the Yangtze River Economic Belt, China Energy Conservation has developed a traditional Chinese medicine prescription of "taking the pulse systematically and comprehensively" with its own exploration.
From May 13th to 17th, a series of activities entitled "Entering New State-owned Enterprises", directed by the Network Review Bureau of the Central Network Information Office, the Propaganda Bureau of the State Council State-owned Assets Supervision and Administration Commission, and sponsored by the State Council State-owned Assets Supervision and Administration Commission Press Center, went from Guiyang to Chengdu and then to Huzhou, into the Yangtze River Economic Belt and into China to save energy.
"Aggregate the strength of all parties and be the respondent together." Chen Shuguang, deputy secretary of China Energy Conservation Party Committee, said. As the main platform enterprise for pollution control in the Yangtze River Economic Belt, China should take concrete measures and actions to actively promote cooperation with provinces and cities along the Yangtze River, and jointly make greater contributions to winning the tough battle of Yangtze River protection and restoration and promoting the green development of the Yangtze River Economic Belt.
Exploring a new distributed heating mode in the Yangtze River basin with technological innovation
If "the dispute between bean curd and sweet potato" is the epitome of the difference in food between the north and the south, then "central heating" is the biggest difference in housing between the north and the south. In recent years, winter heating in southern China, especially in the Yangtze River basin, has gradually become a hot topic. How to properly solve the heating demand of people in the south and strictly control the increment of building energy consumption at the same time? China’s exploration of energy conservation in Guizhou is worth learning.
Located in Yunyan District of Guiyang City, a large community — — Zhongtian Future Ark Project is the first green heating community in southwest China. The project is located in the mother river of Guiyang — — In the lower reaches of Nanming River, relying on this advantage, China innovated the concept of distributed energy supply, adopted multi-energy complementary thinking, and combined water source heat pump, ground source heat pump, sewage source heat pump and other technologies to extract energy from low-grade energy such as river water, sewage and air, and make overall use of it, so as to reduce the dependence on traditional fossil energy and realize zero pollution and zero emission. Zhongtian Future Ark Renewable Energy Centralized Energy Supply Project is one of the first eight green ecological demonstration cities in China approved by the Ministry of Housing and Urban-Rural Development. The project can save 45,000 tons of standard coal, 119,000 tons of carbon dioxide, 4,000 tons of sulfur dioxide and 6,000 tons of mixed particulate matter annually.
The attitude of local residents towards this green heating community has gone through the process of initial rejection, resistance, gradual acceptance and increasing dependence, and green heating community has become a new choice for local residents.
Create an idyllic complex and realize the organic combination of ecological value and economic value.
Under the call of "Great Protection, No Great Development", China Energy Conservation has actively explored the pastoral complex mode of agriculture, light, fishing and complementary industries in many provinces and cities in the Yangtze River basin, ensuring the deep integration of photovoltaic industry and agricultural and sideline industries on the premise of agriculture-oriented, among which the agricultural town integrating fishing, agriculture and light of China Energy Conservation (Changxing) Solar Energy Technology Co., Ltd. is a typical representative.
Changxing County, which belongs to Huzhou City, Zhejiang Province, is located on the southwest bank of Taihu Lake. It has always been known as the land of plenty and the house of silk, and its aquatic products in Taihu Lake are also famous at home and abroad. Therefore, at the beginning of Changxing photovoltaic project planning, China Energy Conservation clearly put forward the concept of building a photovoltaic demonstration project with local characteristics, fully integrating the linkage of high value-added agriculture, industry and service industry, and put forward the concept of "weak photovoltaic" in photovoltaic projects for the first time, introducing local powerful breeding enterprises and planting enterprises to participate in the operation through joint investment of local governments, and combining the development of ordinary photovoltaic power stations with fisheries, agriculture and leisure tourism. The aim is to create a small town model integrating fishing, agriculture and light, and bind the investment operators, government and farmers of photovoltaic power plants into a combination of common interests, so as to achieve a win-win situation for all parties and re-empower traditional photovoltaic power plants. As the core of photovoltaic intelligent agriculture comprehensive demonstration project, the overall installed capacity of the project is 70 MW, producing 75 million kWh of clean electricity every year, saving 34,000 tons of standard coal, reducing 250 tons of sulfur dioxide, 72,000 tons of carbon dioxide and 287.1 tons of soot.
While realizing energy conservation and emission reduction, Changxing project pays attention to the combination with local conditions, highlights characteristic agriculture, and improves the comprehensive efficiency and modernization level of agriculture. The first phase of the project covers an area of 1,000 mu with 50 MW of complementary fish and light, which integrates the original pit and pond water surface into a standard fish pond, realizing the combination of photovoltaic power generation on the upper part and fishery culture on the lower part. Since its establishment more than two years ago, a crayfish breeding cooperative model has been formed, in which seedlings are supplied from the base to neighboring farmers and then recycled and sold at high prices, achieving an annual output of nearly 500,000 Jin, solving the contradiction between raising and selling, and the average output value per mu is more than 12,500 yuan. In the second phase of the project, the 20 MW complementary part of agriculture and light covers an area of about 500 mu. The whole project consists of 24 photovoltaic linked greenhouses and a sightseeing shed, all of which adopt the construction mode of modern science and technology multi-span greenhouses. The greenhouse is equipped with natural ventilation and fan ventilation system, which can conveniently control the indoor temperature and humidity of the greenhouse so that crops are not damaged at high temperature; The thermal insulation system enables crops to grow normally in cold winter. In addition, a rainwater collection system is installed to collect rainwater in time for later irrigation, and at the same time, the rainwater can be recycled and water can be saved, and water can be replenished at any time according to crop growth through the sprinkler system installed in the greenhouse. All facilities in the greenhouse are electrically automated, which greatly improves the use efficiency. Dendrobium candidum is mainly planted in the shed, with an annual output of 200,000 Jin, and the overall output value per mu is more than 80,000 yuan.
After the completion of the project, more than 100 jobs were provided for villagers in villages and towns, which solved the problem of rural surplus labor force employment and the problem of returning farmers’ entrepreneurial venues. The per mu yield of agricultural land in the project was increased from less than RMB 35,000 in 1000 yuan to an average of RMB 35,000, and a set of photovoltaic agriculture-based "small town model" was successfully explored.
Actively arrange solid waste treatment projects and innovatively put forward a comprehensive solution of "two parks and one chain" solid waste.
The problem of pollution control in the Yangtze River lies in the water and the roots are on the shore. In recent years, China Energy Conservation has always taken solving the problem of coastal solid waste pollution as an important starting point to participate in the pollution control of the Yangtze River Economic Belt, actively arranged solid waste treatment projects, and innovatively put forward a comprehensive solution of "two parks and one chain" solid waste.
Qingbaijiang district Waste Incineration Power Generation Project in Chengdu, Sichuan Province is the most representative waste incineration power generation project invested and constructed by China. As the third large-scale waste incineration treatment project in Chengdu, it undertakes the treatment of domestic waste in jinniu district, chenghua district, Xindu District and qingbaijiang district, Chengdu, with a daily capacity of 1,800 tons, an annual capacity of 650,000 tons, a power supply of 190 million kWh/year, 81,000 tons of standard coal saving and 189,400 tons of carbon dioxide reduction.
What’s even more surprising is that, unlike the imagined mess, the roads in the factory area are wide and tidy. In the artificial lake, water lilies lie in a reclining position, goldfish swim, green grass is around the lake, and flowers are in full bloom. The green bamboo and panda drawn on the main factory building set off against the blue sky, white clouds and lake water, forming a landscape map of their own. Walking among them, there is no smell in the whole factory, as quiet and beautiful as a garden. Different from other waste power plants, the Chengdu project is a rare integrated design of factory and office in China, that is, the comprehensive office building and the main waste incineration plant are in the same building, and the staff dormitory is less than 200 meters away from the main plant, so that "one of our own" can work and live in the factory, which fully embodies the "technical confidence" of China in the field of safe production and emission standards.
Su Zhigang, general manager of Chengdu China Energy Saving Renewable Energy Co., Ltd. said that the project adopts the world’s most advanced reciprocating mechanical incinerator grate (Seghers grate) and semi-dry flue gas purification technology and equipment, and it is the first government franchise project in China to adopt flue gas emission indicators according to the EU pollutant control standards (2000/EU/76). The principle of "3T+E" is adopted in the incineration process to ensure the effective control of the dioxin problem that people are most concerned about. Since the project was completed and put into operation, the detection index of dioxins can reach the EU 2010 standard. At the same time, the smoke emission data is networked with the monitoring center of the local environmental protection bureau, which is under all-weather online supervision. The leachate treatment of the project adopts the process of "deslagging pretreatment+anaerobic UBF+ external MBR+ nanofiltration", which can meet the first-class discharge standard of sewage. At the same time, the biogas generated by the project can be used for power generation, and the slag is used as the raw material of building materials. After the fly ash is harmlessly treated, it will be transported to a professional landfill site for landfill, so as to truly achieve zero emission of pollutants and realize the full utilization of resources. The project also uses waste incineration steam to wash linen, and the daily average washing capacity of the washing plant is 8000 sets, which effectively reduces the pollution discharge of small boilers and achieves good social benefits.
Chengdu project is only the epitome of nearly 100 energy-saving solid waste treatment projects in China. As one of the company’s important business sectors, China’s energy-saving solid waste treatment projects are spread all over 26 provinces, municipalities and autonomous regions, with a total solid waste treatment capacity of about 90,000 tons/day. Among them, there are 19 solid waste treatment projects along the Yangtze River Economic Belt, with a designed daily treatment capacity of 17,000 tons and an investment scale of nearly 10 billion yuan.
At present, the problem of solid waste pollution in the Yangtze River Economic Belt faces a series of problems, such as large solid waste base, limited effective financial investment in the current period, serious decentralization and fragmentation of treatment facilities, large rural non-point source pollution, and division of industrial chain. In order to meet the overall requirements of environmental management in the Yangtze River Economic Belt, China put forward a new model of "two parks and one chain" to comprehensively solve solid waste. This model breaks through the geographical boundaries, based on the classification of dry and wet garbage and driven by the logistics chain of smart environment, and intensively and cooperatively treats the garbage that can be transported for a long distance to achieve the optimal efficiency of solid waste treatment; For organic waste that is not suitable for long-distance transportation, distributed ecological treatment is adopted to give back to nature and realize ecological environment friendliness. Through the cooperation between urban and rural areas, all kinds of solid waste are recycled in the "two parks and one chain" system, so that no waste flows out. At present, the model has been piloted in Bijie, Xianning and other places. It is planned to launch 4-5 demonstration projects in 2019 and fully promote the plan in 2020, forming the overall layout of the Yangtze River basin and making positive contributions to keeping the mother river youthful and energetic forever.
