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　　The mountain city of Chongqing has a "no waste" approach

　　Our reporter Wu Lumu

　　Centralized and harmless disposal of medical waste, agricultural film recycling outlets, and renewable resource recycling system “three full coverages” at the town level or community level. The central urban area of ​​the main urban area realizes zero landfill of native domestic waste and 100% utilization rate of kitchen waste. %...

　　As the only provincial-level "waste-free city" pilot project in the country, Chongqing regards the construction of a "no-waste city" as an important measure to improve the level of ecological civilization construction, promote the green development of the Yangtze River Economic Belt and promote the construction of the Chengdu-Chongqing economic circle. A cross-field, cross-department, and cross-regional solid waste management system has been formed, a batch of innovative achievements with Chongqing characteristics and national leadership have been formed, and a new path of ecological priority and green development has been explored.

　　Cross-provincial linkage services for hazardous waste recycling

　　Walking into Zhongtian Electronic Waste Treatment Co., Ltd. located in Dazu District, Chongqing, in the dismantling workshop, after more than 10 processes of waste electrical appliances on the production line, the dismantling and sorting out electronic circuits such as circuit boards and power cords. product.

　　"The company's main business is the recycling, dismantling and reuse of waste electronic products." Chen Dong, director of the Environmental Protection Department of Zhongtian Electronics Co., Ltd., said that the company produces about 5,000 tons of hazardous waste every year, some of which need to be transported to Sichuan, Yunnan and other places for disposal. In the past, hazardous waste was The approval procedures for inter-provincial transfers are complicated, which brings considerable operational pressure to enterprises.

　　In 2020, Chongqing, together with Sichuan Province, will take the lead in establishing a "whitelist" cooperation mechanism for the transfer of hazardous waste across provinces and cities.

The two parties shall regularly negotiate to determine the operating unit and the acceptable type and quantity according to their respective hazardous waste utilization and disposal capacity and generation and transfer situation.

Those within the scope of the "white list" no longer need the approval of the prefecture-level ecological environment departments, and the two provincial-level ecological environment departments will directly examine and approve, and the reply can be obtained within 5 working days.

　　After entering the "white list", Zhongtian Electronics Co., Ltd. not only felt the convenience of approval, but also relieved the pressure on solid waste inventory.

"Today, the solid waste generated can almost reach 'Zhouqing' or even 'Nissin'. In 2021, the company will recycle more than 1.5 million waste electrical and electronic products, and transfer and dispose of more than 700 tons of hazardous waste across provinces." Chen Dong said.

　　Lv Junqiang, director of the Solid Waste and Chemicals Division of the Chongqing Municipal Bureau of Ecology and Environment, said that in accordance with the principle of "transfer nearby and controllable risks", the "whitelist" system has now been extended to Guizhou and Yunnan provinces.

In 2021, Chongqing will continue to deepen the “whitelist” mechanism for inter-provincial and municipal transfer of hazardous wastes and the joint prevention and control mechanism of hazardous waste with surrounding provinces and cities such as Yun, Gui, and Sichuan, and actively serve hazardous waste production and utilization enterprises.

　　Up to now, Chongqing, Sichuan, Guizhou, and Yunnan have included 8 categories of hazardous wastes and 51 enterprises in the "white list", an increase of 166.7% and 240% respectively compared with 2020.

The latest data shows that in 2021, Chongqing, Sichuan, Yunnan and Guizhou will approve a total of 167 cross-provincial and municipal transfers of hazardous wastes in accordance with the "whitelist" cooperation mechanism, with an approved transfer volume of 72,000 tons.

　　It is worth mentioning that Chongqing and Sichuan signed an agreement on the co-construction of a "no-waste city" in the Chengdu-Chongqing economic circle, promoting resource sharing, mutual recognition of qualifications, regional linkage, emergency cooperation, law enforcement coordination, information exchange, personnel exchange.

　　Chongqing has also created a comprehensive collection model for small and micro-source hazardous waste, and built comprehensive hazardous waste collection and storage facilities in 34 districts and counties, covering more than 6,000 small and micro-source enterprises and social-source enterprises, effectively alleviating the difficulty of collecting and storing small and micro-source hazardous waste. Difficulty, transfer difficulties, etc.

　　Chongqing uses informatization to improve its smart supervision capabilities.

Chongqing has built a big data platform for solid waste pollution prevention and control, and established "three lists" of hazardous waste generating units, self-use and disposal facilities, and key supervision units, covering more than 7,300 enterprises.

Through this platform, the whole process of the generation, collection, storage, transportation, utilization, and disposal of hazardous waste can be traced back and managed.

　　Technological innovation promotes the harmless treatment of waste

　　On the morning of February 20th, the reporter saw at the Luoqi Food Waste Treatment Plant in Yubei District, Chongqing that trucks full of kitchen waste were entering and unloading one after another. , residues and leftovers and other organic substances are packaged and sent to dry anaerobic tanks for anaerobic fermentation.

　　"After more than 10 days of anaerobic fermentation, the organic matter in the kitchen waste will be converted into biogas, which can be used for power generation or compressed natural gas production after purification." said Zhang Zhiwei, head of the Luoqi Food Waste Treatment Plant. The company has cooperated with Chongqing University and other colleges and universities to develop a complete set of key technologies for the collection, transportation, treatment and recycling of kitchen waste, which has broken the monopoly of foreign technology. for treasure.

　　Food waste is a difficult problem in end-of-line disposal in waste classification.

In Chongqing, the kitchen waste generated by hot pot catering has the characteristics of high moisture content, high oil content and high salt content, and it is difficult to reduce the amount and treat it as a resource.

In recent years, Chongqing has attached great importance to the management of kitchen waste, specially established a joint meeting system for the collection, transportation and disposal of kitchen waste, and carried out special joint law enforcement actions on a regular basis, providing a strong policy and mechanism guarantee for the implementation of standardized management of kitchen waste.

Through scientific research and collaborative research, Chongqing took the lead in solving the technical problems of kitchen waste disposal in the country, and realized the harmless treatment and resource utilization of kitchen waste.

　　Since it was put into use at the end of 2020, the Luoqi Food Waste Treatment Plant has undertaken the important task of processing all kitchen waste in the central urban area of ​​Chongqing's main metropolitan area, and can recycle 1.33 million tons of kitchen waste every year.

　　At present, Chongqing has built 11 kitchen waste treatment plants, and built a collection, transportation and treatment system covering urban and rural areas. %, and achieve both economic and environmental benefits.

　　While increasing the resource utilization of kitchen waste, Chongqing has also continuously promoted the construction of a technological innovation system for the harmless disposal of primary domestic waste and urban sewage sludge.

　　Chongqing Sanfeng Environmental Group Co., Ltd. took the lead in the industry to realize the localization of a complete set of domestic waste incineration power generation equipment, which promoted the total incineration and zero landfill of the original domestic waste in the central urban area of ​​the main city of Chongqing, and its related technologies and equipment were exported to the United States and India. and many other countries.

　　Chongqing is also actively exploring the development of the harmless treatment and disposal of sludge and the development of resource recycling and utilization industries. The harmless multi-disposal technology system of sewage sludge.

At present, there are 82 sewage treatment plants and 44 sludge harmless disposal facilities in Chongqing.

Last year, about 750,600 tons of urban sewage sludge were disposed of harmlessly in the central urban area, with a harmless disposal rate of over 99%.

　　"Waste-free city cells" are on the rise

　　"The current Lime City vegetable market has a clean and tidy environment, and shopping is comfortable," said Chen Yan, a resident of Jiaochangkou, Yuzhong District, Chongqing.

　　The Shishi Market in Yuzhong District is the first “waste-free vegetable market” in Chongqing.

In the past, this vegetable market was criticized by nearby residents for its untimely transfer of kitchen waste, disorderly stacking, and odor disturbing the people.

Today, the file has been upgraded here, and 100% of fruit and vegetable waste is recycled on-site, and it has also become a new urban "Internet celebrity check-in point".

　　Tang Lingyu, deputy director of the Ecology and Environment Bureau of Yuzhong District, Chongqing, said that by transforming the vegetable market and the original abandoned parking lot, a kitchen waste treatment equipment with a processing capacity of 5 tons was built in the local area, and the 5 tons of fruit and vegetable waste generated by the vegetable market every day was converted on-site. It is 0.75 tons of nutritious soil, which not only effectively reduces the pressure of garbage storage and transfer in the vegetable market, but also generates economic benefits of about 50,000 yuan of organic fertilizer every year.

　　In Chongqing, there are still many "waste-free urban cells" like the Lime Market.

Chongqing Yongchuan District combines the creation of energy-saving institutions, civilized construction sites, and green factories to create "waste-free institutions," "waste-free construction sites," and "waste-free factories." Resource utilization of oily metal scraps; Nan'an District and Liangjiang New District build "no-waste parks" and "no-waste scenic spots", use litter to prepare organic fertilizers, use waste products to make handicrafts, and realize the reuse of waste resources...

　　Based on common situations of production and life, Chongqing creates an atmosphere of co-construction and sharing, organically combines with green creation activities, highlights "no waste" elements such as garbage classification, green office, waste recycling, etc. There are more than 680 “Waste-Free City Cells” in 16 categories, including “No-Waste Park”, “No-Waste Hospital”, “No-Waste Vegetable Market” and “No-Waste School”, covering all fields of clothing, food, housing and transportation, forming a multi-participation and benign interaction system for the whole people to promote The public has formed a green lifestyle, and the concept of "no waste city" has been widely recognized by the public.

　　At present, Chongqing has launched a new round of "no-waste city" construction in Wanzhou, Qianjiang, Fuling and other districts and counties outside the central urban area, and the leading role of regional co-construction demonstration of "no-waste city" is becoming more prominent.