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On world environment day, millions of netizens gathered around to watch the garbage turn into green power

Time: June 9, 2020

"Hello, everyone. Today is world environment day. We will take you to explore circular economy." At present, garbage sorting is becoming a nationwide action, but many people may not know where to go and how to deal with the garbage after sorting. On the morning of June 5, Beijing Daily's client, Beijing live, joined hands with Beijing state-owned assets company to come to the circular economy industrial park of Beijing Sub Center. In the innovative form of cloud live broadcasting, millions of netizens closely watched how to turn waste into treasure and turn into green energy.

Beijing Urban sub center circular economy industrial park is a large-scale municipal facilities project invested, constructed and operated by green power group of Beijing state owned assets Corporation, covering an area of 295 Mu and a total construction area of 63000 square meters. The park will be put into operation in 2018, which can meet the domestic waste treatment needs of the urban sub center and Tongzhou District.

Different from the garbage treatment plant imagined by many people, this is a garden style and modern park with a greening rate of 30%. Lotus flowers in the landscape pool of the park have begun to bloom. The office building on one side is designed with "Siheyuan" with Beijing architectural characteristics, and the atrium garden is chic, simple and elegant.

The 39000 square meter production building integrates the functions of garbage collection and storage, incineration, flue gas treatment and steam power generation. From a distance, the building is composed of red, yellow and blue, which is like a giant magic cube. The appearance design of the three primary colors of the external curtain wall makes the whole park become the urban landscape with the attribute of "visual landmark". According to reports, the park receives more than 3000 people from all walks of life every year, including a large number of primary and secondary school students.

"We mainly deal with 'other wastes' as resources." According to Han Liguo, general manager of the industrial park, there are currently three waste incineration lines in the park, with a design capacity of 2250 tons per day and an annual actual treatment capacity of 900000 tons. The heat generated in the process of waste incineration can promote two 25MW steam turbine generator units, generating 1.2 million kwh of green power every day, and 220 million kwh of online electricity each year.

Every morning, the garbage truck will continue to drive into the park, after weighing in the ground pump room, it will be unloaded to the feeding area. After 5 to 7 days of stacking, fermentation, drainage and mixing, the calorific value becomes higher. Then the garbage is put into the incinerator by the giant grab, which can grab 10 tons of garbage at a time.

Through the real-time picture of the central control room, we can see that the garbage is burning on the grate in the furnace of the waste incineration line. According to the staff, the temperature in the furnace reaches about 1000 ℃. The flue gas, which is up to the standard, is discharged into the air through the chimney after flue gas purification and dust removal. On the electronic display screen at the gate of the park, various data indicators of gas emission are displayed in real time. The slag enters the slag pit and can be used for road brick making in the later stage.

As the gate shaped chimney 82 meters high, has become a landmark around the building. Standing on the 68 meter viewing platform, you can have a panoramic view of the park. You can see the city's sub center and Tongzhou District in the north, Langfang City in the South and Wuqing District in Tianjin in the East.

After incineration and utilization, the waste can be reduced by more than 90%, which is equivalent to saving 100 mu of land for stacking garbage every year; waste power generation is equivalent to saving nearly 88000 tons of standard coal and reducing the emission of carbon dioxide by more than 200000 tons The environmental benefits brought by the park are very considerable, which truly realizes the harmless, reduction and resource optimization of garbage treatment. Huang Jianzhong, vice president of green power group, said that it will adhere to the business philosophy of "social benefit first and economic benefit oriented" of the parent company Beijing state owned assets company, innovate the investment and financing mode, give full play to the advantages of project scale, promote technological innovation and progress, and make more and greater contributions to the construction of ecological civilization.