Group 1: Overview of "Waste-Free City" Initiative - The Ministry of Ecology and Environment announced a significant push for "Waste-Free City" construction, aiming to expand pilot cities to around 200 by 2027, with a goal of 60% of cities participating by 2027 and full coverage by 2035 [1] - "Waste" in "Waste-Free City" refers to solid waste, including household garbage, construction waste, industrial waste, agricultural waste, and hazardous waste [2] Group 2: Current Challenges and Environmental Impact - Over 600 major cities in China face significant challenges with high volumes of solid waste, leading to severe environmental issues such as water, air, and soil pollution [6] - Historical waste accumulation has not been effectively managed, posing risks to human health and the environment [6] Group 3: Concept and Goals of "Waste-Free City" - The concept of a "Waste-Free City" does not imply zero waste production but aims for a green, circular development model that minimizes waste impact on urban environments and residents [8] - The initiative focuses on promoting green production and living, with strict management processes to enhance resource recovery and high-value recycling [8] Group 4: Innovative Solutions and Case Studies - In Zhejiang, the province plans to collect and process 7.64 million tons of perishable waste by 2025, achieving a 100% harmless treatment rate, which will contribute to urban green development [9] - The New Chang County's kitchen waste disposal center efficiently processes perishable waste, converting it into high-quality insect protein and organic fertilizer, generating economic benefits of over 5 million yuan [13] - In Chongqing, construction waste, which constitutes over 40% of urban solid waste, is being processed into various reusable materials, with a resource utilization rate of 69% and plans to reach 80% during the 14th Five-Year Plan [20] Group 5: Economic and Environmental Benefits - The transformation of marble tailings into usable materials has significantly increased their economic value, with annual processing of over 2 million tons and a potential output value exceeding 3 billion yuan [20]