With the Mid-Autumn Festival and National Day holidays approaching, Beijing's major railway stations are bracing for a surge in passenger traffic. According to estimates from the Municipal Key Station Area Management Committee, the eight major station areas collectively receive nearly one million visitors daily, and passenger numbers will climb even higher during the holiday period. Combined with the diverse commercial operations inside the hubs, such as restaurants and gift shops, the volume of waste generated is enormous, averaging 126 tons per day.

Yet, why is it that walking through Beijing's railway station transport hubs, one can barely catch a glimpse of any rubbish? Where does all this massive amount of waste disappear to? After recently visiting several railway stations, reporters discovered that behind the so-called "clean as people leave" phenomenon lies a little-known, yet highly organized, waste collection and disposal system.

Front-End Collection And Sorting

Stepping into Beijing Tongzhou Station, which opened at the end of last year, the environment is spacious, bright, and impeccably clean with no unpleasant odors. The station has over 200 sets of waste bins, strategically positioned so that in high-traffic areas, passengers can find a disposal point every few dozen meters. So where does the waste deposited by travelers actually go? The first point of handling is the station's cleaning staff. Zhou Junbo, the person in charge of waste sorting at the Tongzhou Station Office of the Municipal Key Station Area Management Committee, explained that during routine inspections, once cleaners notice a bin is more than two-thirds full, they package the waste and place it onto trolleys. After accumulating a certain amount, it is transported to a nearby temporary storage point.

At a temporary waste storage area inside the waiting hall, the standard sight is a set of larger "four-color trash bins" designed for greater capacity. Staff members are busy sorting recyclables, kitchen waste, hazardous waste, and other waste into separate bins before loading them onto collection carts and transporting them to the waste room on the underground garage level. Zhou Junbo stated that the station typically operates 20 of these temporary storage points, most of which are tucked away in inconspicuous corners. "We adjust the number of active storage points flexibly based on passenger flow to improve work efficiency," he added. This similar front-end waste collection scenario is more often "designed on demand."

Reporters noticed that in the urban corridor leading from the subway exit to the railway entrance at Tongzhou Station, there are more waste bins on the eastern side than on the western side. Zhou Junbo explained that this is because passenger flow is heavier on the eastern side of the corridor. The placement of the bins is also highly calculated; they are generally positioned about 10 meters away from the waiting seats. "They need to be within the passengers' line of sight, but not so close as to cause discomfort."

Beyond fixed-position bins, there are also mobile, patrolling "garbage carts." On the plaza in front of Beijing West Station, a robot named "Intelligent Helper Cart" draws considerable attention as it weaves back and forth along a planned route, attracting stares from passing travelers with its striking design. The "Intelligent Helper Cart" carries a sorting bin on its back and remains on active duty for over 8 hours daily, changing the traditional method of passengers having to "search for a bin to dispose of waste." Equipped with LiDAR and depth vision sensors, the robot can identify pedestrians, vehicles, and obstacles in real time, proactively slowing down and avoiding them in dense crowd scenarios with great agility. This summer, Qinghe Station's plaza also introduced this new robot.

Transfer Station Compression And Weight-Based Billing

Beyond smaller-scale temporary storage points and waste rooms like those at Beijing Tongzhou Station, major stations like Beijing West Station have their own dedicated waste processing centers. In the northeastern corner of Beijing West Station, a waste processing center of about 120 square meters operates around the clock. Waste from train cars, bins within the station, and commercial tenant operations all flows first to this central "transfer station."

In the early hours of September 18, around 3 a.m., while the city was still under the cloak of darkness, transfer vehicles had already delivered the night's waste from Beijing West Station to the processing center. Starting at 4 a.m., every ten minutes or so, electric tricycles, quadricycles, and manual carts continuously bring collected waste from the station to this location for temporary storage. By 9:30 a.m., in the monitoring area of the control room, a green electric waste transfer cart slowly entered the garage and drove onto a weighing zone. The screen immediately displayed the net weight of the waste: "422 kilograms." Underneath the cart is a floor scale, and the weight is recorded in real time and automatically transmitted to a database without requiring manual oversight. This collected data serves as the basis for source-based waste metering and billing, and also helps guide regional waste collection operations to shift to "off-peak" transportation times.

After weighing, the transfer cart reverses into position, aligning its rear with the compaction equipment. A mechanical telescopic arm lifts and tips the waste bin, and the waste falls into the compactor. The bulky waste is compressed into a cube, "slimmed down," and stored in a large 10-ton capacity waste container that is four to five meters long. The entire process, from the transfer cart entering for unloading to exiting, averages only two to three minutes. Around noon, as the large waste container approaches full capacity, a hook-lift truck lifts the container onto a larger vehicle for transport to a waste sorting station for standard disposal. The working area is almost free of obvious odors, thanks to a negative pressure deodorization system. This system uses negative pressure technology to channel odors, dust, and other pollutants generated during waste compression into equipment like nano-biological catalytic oxidation towers and ion-activated oxygen filter towers. After washing and filtering, the air is released, and combined with sprayed deodorizers, effectively controls odors within the station.

Zhang Shuying, from the West Station Office of the Municipal Key Station Area Management Committee, noted that in earlier times, domestic waste in the West Station area had to be manually tamped down into bins, resulting in a dirty and messy environment. In 2016, construction began on the new waste processing center for the West Station area, and in 2025, the center completed an intelligent upgrade, with a designed daily processing capacity of 120 tons. "Last year, the center processed an average of 22.65 tons of domestic waste per day, with peak daily volumes reaching 35 tons."

Station-Specific Strategies And Recycling Rewards

While the eight major railway stations share a similar waste collection and disposal mechanism, the specifics vary depending on each station's unique spatial layout, waste output, and operational model. At the eastern exit of the south hub of Beijing Fengtai Station, a sleekly designed intelligent recycling machine stands out. This is the city's first intelligent waste sorting and recycling machine in a railway station area, first deployed in May this year, capable of collecting recyclable waste from travelers at any time. Below the machine's operation screen and deposit opening, recyclables such as paper, plastic, fabric, and metal are categorized with clear icons, making them easy to understand and quick to reference during deposit.

Cheng Kai, deputy general manager of Fengtai Environmental Technology Group, explained that for every kilogram of recyclables deposited into the machine, users receive 0.6 yuan in environmental credits. A reporter tested the machine on site, following the prompts to scan a QR code. The box door opened automatically, and a countdown timer appeared on the screen. The reporter immediately placed a gift packaging box into the deposit port, pressed "end deposit" on the screen, and the system played a voice prompt saying "data uploading, please wait." Within seconds, the weight and environmental credits were displayed simultaneously -- "This deposit weighs 0.40 kg, earning amount 0.24 yuan."

Waste sorting promotion is an essential part of the operations. Qinghe Station has introduced an interactive "You Sort, I Evaluate" segment -- randomly selecting waste just generated by a merchant, having staff sort it on the spot, and law enforcement officers provide immediate comments and scores. Chaoyang Station has set up a permanent promotional booth, using visual and engaging formats to continuously offer consulting services to passing travelers. The "Sky Curtain" smart screen in the transfer hall of Beijing South Railway Station also promotes waste sorting, using an immersive large-screen visual effect to capture the attention of travelers. In the Beijing North Railway Station area, domestic waste sorting guidelines are printed in pictorial form on custom-designed bins on the plaza, guiding travelers to sort efficiently and achieve "precise and convenient disposal."

Clean As People Leave Requires Conscious Passenger Participation

Railway stations are the "first stop in Beijing" for millions of travelers, directly shaping their initial impression of the city. Facing a daily passenger flow of nearly one million, the ability to quietly and efficiently collect and dispose of massive amounts of waste is not a simple matter of sweeping and cleaning. From dynamic front-end collection points, to intelligent central compression, to station-specific measures, the entire process relies on the joint relay of multiple roles -- cleaners, haulers, and maintenance staff -- reflecting the sophistication of the city's fine-grained governance. The "clean as people leave" standard at railway stations depends not only on the silent dedication of sanitation workers but also requires the conscious participation of every traveler. No matter how complete the facilities or efficient the disposal mechanism, the cooperation of passengers is essential for maintaining cleanliness.

Travelers should consciously develop waste sorting awareness during their journeys, following station signage to dispose of waste properly -- not littering, not mixing waste types, and not leaving behind any refuse. After waiting or dining, they should proactively take away their own trash, achieving the goal of "clear waste as people leave, no residue upon departure." According to requirements like the "Beijing Action Plan for Further Improving Domestic Waste Sorting Quality and Efficiency (2026-2028)," the eight major railway stations will continue to promote the quality upgrade of waste sorting disposal points, embedding more convenient recyclable collection ports into the travel experience to guide the public in shifting from passive compliance to active participation.