In today's society, electronic cigarettes, especially disposable electronic cigarettes , have been widely popularized around the world due to their unique user experience and some advantages over traditional tobacco. However, with the rapid increase in its usage, the environmental pollution problem caused by electronic cigarette waste is becoming more and more serious. A large amount of electronic cigarette waste is piled up, including batteries, plastics, metals, and residual chemicals, which not only occupy precious land resources, but also may pollute the soil, water and air through various channels, bringing a heavy burden to the ecological environment. Therefore, how to effectively improve the recycling efficiency of electronic cigarette waste has become a key problem that the entire electronic cigarette industry needs to overcome. Designing electronic cigarettes that are easy to recycle is by no means a simple task. It requires us to comprehensively consider multiple important aspects such as environmental protection, resource recycling, user convenience experience, and recycling efficiency. After in-depth research and analysis, the following proposes a comprehensive and detailed optimization plan from seven dimensions.

1. Innovative structural design to facilitate easy disassembly
1. Modular and easy to disassemble structure
The key components of the electronic cigarette, such as the battery, cartridge, atomizer and shell, are carefully designed into independent modules, using snap-on or magnetic connection technology, and abandoning glue bonding and welding. The significant advantage of this design is that the disassembly work in the recycling stage can be carried out quickly and efficiently. Taking a very creative "building block" electronic cigarette on the market as an example, its battery module adopts high-strength magnetic connection technology. While ensuring the stable power supply of the battery, the user only needs to apply light force to separate the battery from the main body of the device. The cartridge part is connected to the atomizer through a cleverly designed snap-on structure. The size and shape of the snap-on are precisely calculated, which can not only ensure that the cartridge will not fall off accidentally during use, but also allow users to easily apply force during disassembly. Users can complete the disassembly in just 5 seconds with bare hands, and each component can be recycled separately, which greatly improves the convenience and practical operability of the recycling work. This modular design not only facilitates recycling, but also has great advantages in the daily maintenance and repair of the product. When a component fails, the user does not need to send the entire device for repair, but only needs to replace the corresponding module by himself, which reduces the repair cost and time cost.
2. Anti-mixing identification design
For parts made of different materials, use color or texture differentiation identification. For example, use eye-catching red to mark battery parts, and blue to represent plastic parts. This intuitive way of distinguishing allows recyclers to quickly identify parts of different materials during the sorting process, effectively reducing the difficulty of sorting and greatly improving recycling efficiency. In actual operation, recyclers may have to deal with a large amount of e-cigarette waste every day. Without such clear identification, it will take a lot of time and effort to accurately distinguish parts of different materials. Through color identification, recyclers can determine the material of a certain part at a glance, so that they can quickly put it into the corresponding recycling container. For some recyclers with poor eyesight or working in dimly lit environments, texture differentiation identification can play an important role. For example, the surface of the battery part can be designed with a unique concave and convex texture, which can be felt by touching it with your hand. The difference from other parts further improves the accuracy and efficiency of sorting. At the same time, this identification method also helps to improve the public's awareness of the material of e-cigarette parts. When users discard e-cigarettes, they can know more clearly how different parts should be classified, so as to better cooperate with recycling work .
2. Innovative material selection to break through recycling bottlenecks
3. Use of single recyclable material
In the production of parts such as shells and cartridges, single recyclable materials such as polypropylene PP and polylactic acid PLA are preferred, and composite materials such as metal-plastic mixtures are avoided. The "all-plastic degradable atomizer" successfully developed by a Shenzhen company has successfully passed the EU EN13432 certification, providing a valuable reference example for the industry in material selection, and resolving the problem of material recycling from the source. Polypropylene PP has good plasticity and mechanical properties, which can meet the requirements of electronic cigarette shells for strength and durability. Moreover, it is easy to handle during the recycling process, and can be reprocessed into various plastic products through specific processes. Polylactic acid PLA is a biodegradable material that uses renewable plant resources as raw materials. It can gradually decompose in the natural environment and will not exist for a long time and cause pollution like traditional plastics. For cartridges, the use of polylactic acid PLA material is not only environmentally friendly, but also ensures that the smoke liquid will not be polluted during use, ensuring the quality of electronic cigarettes . In contrast, metal-plastic composite materials face great challenges when recycling. Due to the large differences in the properties of metals and plastics, it is difficult to separate and recycle them separately through simple processes. The use of a single recyclable material not only simplifies the recycling process, but also increases the recycling rate of resources, making a positive contribution to sustainable development.

4. Application of easy-to-separate coating technology
By applying a water-soluble coating on the surface of metal parts, the plastic layer can be easily peeled off through a simple water washing operation. This innovative technology makes the originally complex and cumbersome material separation work simple and easy, and has effectively promoted the improvement of the speed and quality of the overall recycling process. This water-soluble coating is a special chemical substance that has strong adhesion to the metal surface and can dissolve quickly in water. In the production process of electronic cigarettes, the metal parts are first pre-treated, then evenly coated with this water-soluble coating, and then the plastic parts are assembled with the metal parts. When the electronic cigarette enters the recycling link, the components containing metal and plastic parts are placed in water. After a certain period of soaking, the coating gradually dissolves, and the plastic layer will be separated from the metal parts. The advantage of this technology is that it does not require complex equipment and high costs, and only a simple water washing device is needed to achieve material separation. Moreover, the separated metal and plastic can be recycled separately, which greatly improves the efficiency and quality of recycling. At the same time, this technology also meets environmental protection requirements, because the water-soluble coating will not pollute the environment after dissolution, and its components can be treated through conventional sewage treatment systems .
3. Introducing smart technology to optimize recycling experience
5. Digital Recycling Guide Service
An NFC chip is implanted inside the electronic cigarette device. After scanning the code, the user can jump directly to the "Shenzhen Garbage Classification" applet, which will provide personalized animation demonstrations of disassembly and recycling steps. In this way, users can easily obtain detailed recycling instructions anytime and anywhere to ensure that the disassembly and recycling operations are accurate. The NFC chip is a near-field communication technology with the characteristics of small size, low power consumption and high security. After the NFC chip is implanted in the electronic cigarette device, the user only needs to use a mobile phone or other mobile device that supports the NFC function and approach the electronic cigarette to automatically identify the information in the chip and jump to the corresponding applet. The "Shenzhen Garbage Classification" applet is a platform designed specifically for garbage classification and recycling, in which detailed sections are set for electronic cigarette recycling. When the user enters the section, he will see personalized animation demonstrations of disassembly and recycling steps made according to different brands and models of electronic cigarettes. The animation demonstration uses 3D modeling technology to vividly show the disassembly method and order of each component of the electronic cigarette, and is also equipped with clear text instructions and voice explanations. Users can pause and replay the animation according to their needs to ensure that each step is fully understood. This digital recycling guide service not only facilitates users, but also improves the accuracy and standardization of recycling, and reduces recycling difficulties caused by improper user operations .
6. Accurate lifespan reminder mechanism
When the remaining capacity of the battery management system of the electronic cigarette is less than 10%, it will push the recycling reminder information to the user through the associated APP, and accurately associate the "Dandelion Plan" recycling point closest to the user. This precise reminder mechanism effectively improves the timeliness of recycling and the initiative of users. The battery management system of the electronic cigarette is a complex electronic system that can monitor the battery power, voltage, current and other parameters in real time, and calculate the remaining capacity of the battery based on these parameters. When the remaining capacity of the battery is less than 10%, the battery management system will send the information to the associated APP through Bluetooth or other wireless communication technology. After receiving the information, the APP will immediately push the recycling reminder information to the user. The prompt information not only contains the content that the battery power needs to be recycled due to low power, but also displays the location and navigation information of the "Dandelion Plan" recycling point closest to the user. The "Dandelion Plan" is an electronic cigarette recycling project jointly initiated by the government, enterprises and social organizations. Multiple recycling points are set up in various areas of the city to facilitate users to deliver discarded electronic cigarettes. Users can quickly find the location of the recycling point through the map application on their mobile phones by clicking on the navigation information, which greatly improves the convenience of recycling. This precise life reminder mechanism allows users to know the usage status of e-cigarettes in a timely manner, while providing users with a convenient recycling channel, effectively increasing users' initiative to participate in recycling .
4. Build an incentive system to stimulate recycling enthusiasm
7. Traceable recycling label rewards
Each electronic cigarette device is equipped with a unique QR code. After the user scans the code and uploads the recycling certificate, he can exchange it for a 5% discount coupon in the brand's exclusive mall. This incentive method can not only fully mobilize the enthusiasm of users to participate in recycling, but also strengthen the interactive communication between the brand and the user. QR code is a technology that encodes information into black and white patterns. It has the characteristics of large information capacity, fast recognition speed and high reliability. In the production process of electronic cigarette equipment, a unique QR code is generated for each device and printed on the shell or packaging of the device. When the user sends the discarded electronic cigarette to the recycling point for recycling, the recycling staff will scan the code to register the device and provide the user with a recycling certificate. After the user returns home, he only needs to use his mobile phone to scan the QR code on the recycling certificate and upload the relevant information to the brand's official website or APP to exchange a 5% discount coupon in the brand's exclusive mall. The brand's exclusive mall not only sells electronic cigarette products, but also includes some accessories and peripheral products related to electronic cigarettes. Users can enjoy certain price discounts when purchasing these products using discount coupons, thereby reducing the user's purchase cost. At the same time, through this traceable recycling label reward mechanism, the brand can understand the recycling status of each e-cigarette, establish a closer connection with users, and enhance user loyalty to the brand .
8. Recycling points redemption system
Users can obtain corresponding points by recycling old e-cigarette devices, and these points can be used to purchase branded products in the future. The points system can attract users to continue to participate in recycling activities in the long term, and help form a stable and efficient recycling channel. The recycling points exchange system is a common incentive mechanism that encourages users to participate in specific activities by giving users certain points rewards. In the field of e-cigarette recycling, when users send old e-cigarette devices to designated recycling points for recycling, the recycling staff will calculate the corresponding points for the user based on factors such as the model, brand, and status of the device. These points will be recorded in the user's account, and users can check their points balance on the brand's official website or APP. In the brand's online mall or offline store, a special points exchange area is set up, where users can use points to exchange for various products, including e-cigarette products, accessories, gifts, etc. The proportion of points exchange is reasonably set according to the value of the goods and market demand, ensuring that users can get real returns by recycling old equipment. This recycling points exchange system can not only attract users to participate in recycling activities in the long term, but also promote interaction and consumption between users and brands, forming a virtuous circle, and providing strong support for the establishment of stable and efficient recycling channels.

5. Follow compliance standards and improve product design
9. Standardized interface settings
The electronic cigarette battery interface is designed as a USB-C universal interface, so that it can be compatible with various existing electronic equipment chargers, greatly reducing the number of discarded dedicated chargers. This design is in line with the concept of environmental protection, and it is greatly convenient for users to use in daily life, effectively reducing the phenomenon of idle chargers. The USB-C interface is a new type of universal serial bus interface standard, which has the advantages of small size, fast transmission speed, and support for positive and negative insertion. The use of the USB-C interface in electronic cigarette devices not only allows users to use existing mobile phone chargers, computer chargers and other devices to charge electronic cigarettes, but also improves the efficiency and stability of charging. In contrast, traditional dedicated chargers are not only large in size and inconvenient to carry, but also often idle after users replace electronic cigarette devices due to incompatible interfaces, resulting in a waste of resources. After adopting the USB-C universal interface, users only need to carry one charger when going out to meet the charging needs of a variety of electronic devices, greatly improving the convenience of life. At the same time, from an environmental protection perspective, reducing the number of discarded dedicated chargers can reduce the generation of electronic waste, which has positive significance for environmental protection .
10. Anti-leakage structure optimization
Adding a double sealing ring design to the cartridge part can effectively prevent the leakage of nicotine residue and reduce the difficulty of recycling pretreatment. Ensure that no harmful substances leak during the recycling process and effectively ensure environmental safety. Nicotine is one of the main components of e-cigarette liquid. It has certain toxicity. If it leaks out during the recycling process, it will cause harm to the environment and human health. The double sealing ring design is to set two tightly fitting sealing rings at the connection between the cartridge and the atomizer to prevent the leakage of liquid through double sealing. These two sealing rings are made of special rubber materials with good elasticity and corrosion resistance, and can maintain sealing performance during long-term use. During the recycling process, even if the electronic cigarette device has been bumped and squeezed, the double sealing ring can effectively prevent the leakage of nicotine residue. This not only reduces the difficulty of recycling pretreatment, reduces the risk of recycling personnel being exposed to harmful substances, but also ensures that there will be no pollution to the environment during transportation and storage. At the same time, this anti-leakage structure optimization also helps to improve the quality and user experience of e-cigarette products, and reduce equipment failures and inconveniences caused by liquid leakage .
6. Promote industry collaboration and expand recycling networks
11. Innovative model of shared recycling warehouse
E-cigarette companies actively cooperate with convenience stores, and cleverly embed a pop-up recycling bin at the bottom of the e-cigarette device. After the user is finished using it, the device can be directly delivered to the smart recycling bin set up in the convenience store. With the advantage of the widely distributed outlets of convenience stores, a convenient and efficient recycling network is built, which greatly improves the recycling coverage. The pop-up recycling bin is an innovative design. It sets a small bin at the bottom of the e-cigarette device. When the user finishes using the e-cigarette, just press a button and the recycling bin will pop up automatically. Users can put discarded cigarette cartridges, batteries and other parts into the recycling bin, and then take out the entire recycling bin and deliver it to the smart recycling bin set up in the convenience store. Convenience stores are places that people often visit in their daily lives, with a wide distribution and high traffic. E-cigarette companies cooperate with convenience stores to make full use of the advantages of convenience stores' outlets and provide users with convenient recycling channels. The smart recycling bin uses advanced recognition and communication technologies, which can automatically identify the parts in the recycling bin and upload relevant information to the management system. At the same time, the smart recycling bin also has an overflow alarm function. When the recycling bin is about to be full, it will automatically send a notification to the relevant personnel so that they can clean up and transport the waste in time. This innovative model of shared recycling bins not only facilitates users, but also improves the efficiency and coverage of recycling, providing a new way to solve the problem of recycling e-cigarette waste .
12. Reverse logistics tracking system
Blockchain technology is used to record the data of the entire life cycle of electronic cigarette equipment from production and manufacturing to recycling and processing in detail to ensure that the entire recycling process strictly complies with the waste recycling management methods of the destination country. The whole process can be traced, which effectively ensures that the recycling process is carried out in compliance and orderly. Blockchain technology is a distributed ledger technology with the characteristics of decentralization, immutability, and traceability. In the electronic cigarette industry, the use of blockchain technology can create a unique digital identity for each electronic cigarette device and record its entire process information from raw material procurement, production and manufacturing, sales and circulation to recycling and processing. When the electronic cigarette device enters the recycling link, the recycling personnel can enter the recycling information into the blockchain system by scanning the QR code or other identification marks on the device. This information includes recycling time, recycling location, recycling personnel, equipment status, etc. Through blockchain technology, enterprises and regulatory authorities can view the recycling status of each electronic cigarette device in real time to ensure that the recycling process complies with the waste recycling management methods of the destination country. At the same time, the information records that can be traced throughout the process will also help to improve the transparency and credibility of the recycling process and enhance the public's trust in the recycling of electronic cigarettes. If there is a problem in the recycling process, the blockchain system can also be used to quickly trace the source of the problem and take timely measures to solve it .
7. Strengthen education and publicity to enhance environmental awareness
On the packaging and instructions of e-cigarette products, detailed information on the correct recycling of e-cigarettes is added in eye-catching large fonts and brightly colored pictures, covering the disassembly methods of each component, the way to find the recycling site, and the importance of recycling work. At the same time, environmental slogans such as "Recycle e-cigarettes, protect the green home" are printed on the product packaging to remind users to pay attention to environmental protection at all times. Product packaging and instructions are important channels for users to obtain product information. By adding detailed recycling information on them, users can subtly understand the importance and methods of recycling during the purchase and use of e-cigarettes. Eye-catching large fonts and brightly colored pictures can attract users' attention and improve the effectiveness of information communication. For example, large pictures are used on the packaging to show the disassembly steps of each component of the e-cigarette, and simple and easy-to-understand text is used to explain it so that users can see it at a glance. Environmental slogans can stimulate users' environmental awareness and allow users to actively consider recycling issues after using e-cigarettes .
Regularly organize environmental protection publicity activities, go deep into communities, schools, office buildings and other places, hold lectures on e-cigarette recycling knowledge, invite professional environmentalists to explain recycling knowledge on site, and demonstrate the disassembly and recycling process of e-cigarettes. On social media platforms, carefully produce and publish environmental protection publicity videos. The video content covers the harm caused by e-cigarette waste to the environment, the correct recycling method and the recycling reward mechanism, etc. Through topic interaction, lucky draws and other forms, enhance the publicity effect, and greatly enhance the public's awareness and enthusiasm for e-cigarette recycling. Communities, schools, office buildings and other places are places where people gather. By holding lectures and demonstrations in these places, we can directly publicize e-cigarette recycling knowledge to the general public. The explanations of professional environmentalists are authoritative and professional, which can enable the public to have a deeper understanding of the harm of e-cigarette waste to the environment and the importance of recycling. On-site demonstrations of the disassembly and recycling process of e-cigarettes can allow the public to master the recycling methods more intuitively. Publishing publicity videos on social media platforms can expand the scope of publicity with the help of the communication power of the Internet. Through topic interaction and lucky draws and other forms, user participation can be increased and publicity effects can be improved. For example, a topic discussion area is set up below the video to encourage users to share their views and experiences on e-cigarette recycling, and certain prizes are given to users who actively participate in the discussion. Through these publicity and education activities, a good atmosphere of paying attention to e-cigarette recycling can be created in the whole society, and the public's environmental awareness and participation can be improved.