Garbage classification is an effective way to promote the recycling of resources, many people want to know: after the red, green, blue, gray trash can has sorted the garbage, the garbage flows to where?

Turn waste into treasure, 1 ton of waste paper can produce 850 kilograms of household paper

In Beijing Xinjiekou Daxi Lane community garbage recycling point, neatly placed 14 garbage cans, books, waste paper, plastic bottles, waste shoes, kitchen waste garbage and so on are classified and placed. Among them, the paper waste will be transported to the next destination by truck -- the packaging factory.

Upon entering the gate of Beijing Xidou Recycling Center's packaging factory, the smell of paper products filled the air immediately. It is understood that the packaging plant can receive 150-200 tons of waste paper a day.

Is the waste paper piled up directly after discharge? "Of course not." According to Li Yang, A staff member of the packaging plant, the packaging plant will divide the waste paper into four grades, A, B, C and D, according to the water content and impurity composition, and stack them in different locations respectively for packaging and processing.

The factory has a total of two packaging equipment, push the waste paper into the groove, the machine runs, "huff and puff" between a square of waste paper package is completed. The bales are sent to a paper mill, where they are sorted, disinfected and bleached to produce clean paper for different uses.

According to rough statistics, each ton of waste paper can make 850 kilograms of household paper, save 300 kilograms of wood, and reduce pollution by 74 percent compared with the equivalent amount of production.

"Even the kitchen waste of Tangtangshui water is also valuable. One ton of food waste can be made into 0.3 tons of fertilizer, which is better than pig manure, cow manure and other fertilizers, and does not pollute the soil." According to Li Jian, classification instructor and propagandist of Xinjiekou Garbage recycling Station, the station has cooperated with Beijing Shunyi Strawberry Base to provide them with food waste fertilizer. "Strawberries grown from kitchen fertilizer have a particularly good taste."

Detailed classification, recycling, the use of two systems integrated more efficient

For the benefits of garbage classification, Tsinghua University China circular economy industry Research Center director Wen Zongguo pointed out: the clearer the classification, the higher the purity, the more convenient behind the reprocessing, making the use of high value possible. "For example, the plastic PVC and PET classification treatment, recycled materials less impurities, better quality."

How to promote the classification of waste more refined, in order to improve the efficiency of resource recycling? The model of "Internet + recycling" is favored by all walks of life. "Internet +" companies such as Aihuishou, Huishou Bao, Xidou Dou recycling, re-life and 9shell have reduced the five to seven links in the traditional recycling industry chain to three links, greatly improving the efficiency of resource recovery. However, these companies are not easy to survive, Xiandou recycling founder Fang Hao said, the company also used to directly face the residents of the B2C model of garbage collection, and then had to turn to the B2B model, that is, with the community garbage disposal stations and other cooperation. "The cost of recycling for residents is too high to survive," Fang said. Fang Hao said. 9 Shell, which recycles waste in a B2B model, went out of business at the end of 2016.

Residents' weak awareness of garbage classification also affected the promotion of the work.

Since July last year, 3,000 smart garbage collection machines have been installed in some residential communities in Beijing. A year on, how is the situation? In the Xicheng district Ping 'an Li Street jade corridor East garden community, cleaning staff Huo Zhenqin said that the community has a total of eight intelligent garbage recycling machines, a year residents have a certain sense of classification, but the overall classification is not very detailed, need cleaning personnel to process again.

Wen Zongguo believes that to do a good job of garbage classification and subsequent reuse, three aspects of work should also be strengthened: first, to speed up relevant legislation and clarify the responsibilities and obligations of residents for this work. Second, garbage classification, transportation and treatment should be supported, for example, after the completion of garbage classification, a sanitation truck will be divided into good categories of garbage and mixed together, the previous classification work is meaningless. The third is to scientifically plan the layout of the city and give space to the places and facilities for classifying and disposing of renewable resources. Chen Haibin, a professor at the School of Environment and Engineering at Huazhong University of Science and Technology, pointed out that at present, waste sorting is dominated by the government, while resource recycling and reprocessing are mainly market-based operations. "The connection between the two systems is not good, resulting in some waste not being efficiently reused after recycling." He suggested that a breakthrough should be made in the reform of the system and mechanism to organically integrate the recycling and utilization systems, especially to support the development of the resource recycling market through preferential tax policies. (Yang Tongtong)