Core Viewpoint - The article argues that the narrative of Shanghai's waste classification failure is misleading, as data and industry feedback indicate that the system has been successful in improving waste management and resource recovery [2][19]. Group 1: Misconceptions about Waste Classification - A popular argument claims that advanced incineration technology renders waste sorting unnecessary, suggesting that sorting is merely a formality [3][4]. - Critics assert that waste sorting efforts are futile because collected waste is often mixed during transportation and processing [3][4]. - The notion of overcapacity in incineration plants is presented as evidence of the failure of the waste classification system [3][4]. Group 2: Evidence of Success - Industry feedback indicates that the quality of recyclable materials from Shanghai has improved significantly since the implementation of waste classification, with stable supply and reduced costs for recyclers [4][5]. - Official data shows that since the implementation of the waste management regulations in July 2019, the daily collection of recyclable materials has increased from approximately 4,000 tons to over 7,973 tons by 2024 [9]. - The amount of dry waste collected daily has decreased from 21,500 tons in 2018 to 17,200 tons in 2024, indicating a reduction in waste needing incineration [9][10]. Group 3: Understanding Incineration Plant Capacity - The phenomenon of incineration plants being underutilized is attributed to a successful reduction in the total amount of waste requiring incineration, rather than a failure of the classification system [7][10]. - The increase in incineration capacity from 13,300 tons per day to 28,000 tons per day reflects proactive planning to achieve "zero landfill" goals [11][10]. - The reduction in "other waste" is a direct result of effective waste sorting, which has led to a significant decrease in the volume of waste sent for incineration [10][11]. Group 4: Importance of Waste Sorting - Waste sorting is essential for providing high-quality fuel for incineration, as mixed waste can lead to inefficiencies and increased pollution [14][15]. - Proper sorting enhances the calorific value of waste, making incineration more efficient and environmentally friendly [14][15]. - The establishment of a comprehensive waste sorting system in Shanghai has improved the overall waste management process, countering claims of widespread mixing of sorted waste [15][16]. Group 5: Future Considerations - The article suggests that while current waste sorting efforts are necessary, future technological advancements may provide more efficient solutions for waste management [21][24]. - Innovations such as AI-based sorting robots and biodegradable materials could eventually reduce the need for manual sorting [22][23]. - The transition to these advanced technologies may take time, highlighting the importance of maintaining current waste management practices in the interim [24][25].

Core Viewpoint - The article argues against the notion that Shanghai's waste classification system has failed, presenting evidence that the system has actually improved waste management and recycling rates. Group 1: Waste Classification Success - Since the implementation of the waste management regulations in July 2019, the recovery rate of recyclable materials has increased from approximately 4,000 tons per day to over 7,973 tons per day by 2024 [16] - The amount of dry waste collected has decreased from 21,500 tons per day in 2018 to 17,200 tons per day in 2024, indicating a reduction in waste generation [16] - The volume of wet waste has increased from about 9,000 tons per day to over 12,000 tons per day, showing effective separation and processing [16] Group 2: Misinterpretation of Data - The claim that incineration plants are "underutilized" is misleading; it reflects the success of waste classification, as less "other waste" is being sent for incineration [19][18] - The increase in incineration capacity from 13,300 tons per day to 28,000 tons per day, with the number of incineration facilities rising from 9 to 15, indicates proactive planning to handle future waste [20][21] - The reduction in "other waste" is a direct result of successful waste classification, not a failure of the system [19] Group 3: Importance of Waste Sorting - Effective waste sorting enhances the quality of fuel for incineration, improving energy recovery and reducing pollution [32][27] - The presence of contaminants in mixed waste can lead to increased emissions of harmful substances, making sorting essential for environmental protection [28][31] - The establishment of a comprehensive waste sorting system in Shanghai ensures that different types of waste are collected and processed appropriately [34] Group 4: Future Considerations - The article suggests that while current waste classification efforts are beneficial, future technological advancements may provide more efficient solutions for waste management [46][49] - The potential for AI and machine vision technologies to automate waste sorting could reduce the burden on residents and improve efficiency [43] - The development of biodegradable materials may eventually eliminate the need for extensive waste sorting, but such advancements are still in progress [44][49]