In our daily life, trains are the most important means of transportation. In particular, the " green train " is a typical symbol of driving to the distance in the 1980s and 1990s. I guess many people will have this doubt: "Why are excreted on trains directly onto the rails? Will it not corrode the tracks?"
promotes the "revolution" of train toilets
Before understanding this issue, let's introduce to you the past and present life of train toilets. There are thousands of trains running on the track every year. If we look at the number of trains running, the excrement accumulated on the track from the beginning of the year to the end of the year should be extremely huge and cannot be described by numbers.
In the early days of the founding of the People's Republic of China, the train configuration was extremely backward, and the number was limited, with only a handful of trains running every day. At that time, most of the train cars in were transformed into of passenger cars with carriages. The older generation called it "sheel valet". Because there is no ladder, passengers can only climb onto the car. The facilities in the car are simple and only a few small windows. In summer, riding in this shed is like a sauna.
In order to facilitate passengers, a simple toilet is also installed in each car. Fence it with some straw mat or wooden boards and place a wooden barrel in the middle. There is a small hole at the bottom of the barrel, which is directly connected to the track below the train. Although wooden boards and straw mats block privacy, the odor cannot be stopped. If any passenger excretes feces, the air in the entire car is indulgent to breathe.
Mr. Wang, who retired from the railway, introduced: "When I first started working, the train facilities were very backward, especially the wooden bucket toilet inside. In order to facilitate the flushing of excrement, we would place a bucket next to it, which contained water scoops . It was better in winter, but in summer, this smell would spread throughout the carriage, which was unbearable." Shed valets such as
continued until the early 1990s before gradually disappearing from the public's sight. Then it was replaced by the well-known " green leather car ". Not only were comfortable leather sofa seats installed in , but also electric fans and iron plate floors, and even the toilets were changed to ceramics.
This way, it is much more convenient for passengers to go to the toilet and will never be smoldered by the odor of the car. The only downside is that the toilet is ceramic, so long-term urine stains are difficult to clean. Inline-row ceramic toilets can directly discharge excretion into the rails.
With the development of society and entering the 21st century, this green train has gradually been replaced by new trains. The facilities equipped in it are becoming more and more advanced, especially the improvements in toilets have been greatly improved, which has made the passenger experience more and more high. In the past, the toilets of green leather cars were ceramic straight-row. Nowadays, the toilets are equipped with an independent toilet collector. Just a light press will generate a huge vacuum suction force, sucking all the excrement into the toilet collector at the bottom of the car. This improvement is really convenient.
Why is the excrement directly discharged to the railway tracks without corroding the tracks?
Whether it is a shed valet van or a green train, their toilets are inline-line. Many netizens can't help but ask: "Why are excreted directly onto the railway tracks without corroding the railway tracks and piled up into mountains? Isn't the track smelly?" In fact, the reason is very simple, mainly the following aspects:
1. Stay away from the station for excretion
When we are about to enter the station, we often encounter this situation. The broadcaster will notify in advance: "There is xx station in front of the train running. There are passengers who get off at xx station, please prepare in advance."
In fact, the broadcaster's implication is also to tell passengers that passengers who need to go to the toilet go to the toilet in advance, because when enters the station, the toilets on the train will be locked by the conductor and are prohibited from using it. The conductor will not turn it on again until the train is driven away for a long time.
It should be noted that under normal circumstances, in order to facilitate travel, train stations are designed to be built with densely flowing people. Once the train enters the platform and passengers continue to use the toilet, excrement rushes into the tracks of the platform. Over time, the air and environment of the train station will be polluted, and the lives of nearby residents will also be affected.
This is why when we see the train approaching the platform, there is no excrement on the tracks near the platform. Because it is excreted on tracks far away from the platform and the residential living area, it is difficult to smell this odor on the platform.
2. Exhaust is broken by high-speed airflow
We all know that when a train enters the station, it often slows down in advance. When a train leaves the station, it will accelerate in advance. The speed of at high speed reaches about 120 kilometers per hour. Under the impact of this powerful airflow, the excrement dropped from the toilet will be decomposed into countless fragments by this high-speed airflow. is like the one on the ground, which is difficult to maintain intact.
In addition, after is blown by the wind, sun and rain, it will gradually be decomposed and weathered by nature. In this way, these decomposed excrement cannot accumulate into mountains at all. If it encounters rainy days, it will be cleaned up directly by the rain. To a certain extent, nature has helped humans solve their worries, and nature has a strong ability to decompose.
Although the direct discharge of train toilets in the past polluted the ecological environment, for organic matter, this is not only not considered pollution, but also considered a gift. Because this excrement is a good fertilizer for plants, it allows plants to obtain important elements from it and promote their better growth.
Now that the 21st century has arrived, green trains have gradually disappeared from the public's sight, which also means that the straight-line toilets on green trains have entered the end era.
While we are ushering in a new type of train, we are also ushering in a more comfortable and environmentally friendly bathroom. At present, the toilet collectors of new trains are widely used in trains. Although they are not directly discharged to the tracks as before, this toilet collector is more environmentally friendly. After the train arrives at the station, the sewage suction truck directly sucks away the excrement inside. We no longer have to worry about whether the excrement will corrode the rails and whether it will pollute the environment.
The revolutionary process of train toilets proves that human life is getting better and better. I hope that in the near future, we will usher in more convenient and comfortable means of transportation.
