Lead
When we take a plane or a train, we will find that there are toilets and special toilets for us to excrete, and even special vacuum toilets on the plane for us to use.
But the question arises, where does the water come from on these planes and trains, on ships and ships?
Where does the waste from the toilets we use go?
The most primitive way of disposing of excrement.
As we all know, when the train began to pass through the world, it was used to pull goods and transport people, and not only people could sit on it, but even livestock could get on the train and travel with it.
So in order to provide convenience for the animals, so that they don't let them and pee all over the car, at this time there was the prototype of the train toilet, but the train toilet was very primitive at the beginning, just a simple toilet, without any processing function.
In the beginning, these toilets discharged excrement directly onto the railroad tracks, and as long as the toilet was pulled and the lever was pulled, the excrement would fall onto the track with the effect of gravity.
This is tantamount to discharging sewage directly into the ground, and even if there are regular sanitation workers to clean and clean it, it will also cause the environment around the train station to be unsightly and grow bacteria.
In addition, both sides of the railway are unmanaged, and there is excrement rotting on the railway for a long time, which not only emits an unpleasant odor, but also attracts flies, fleas and other insects to gather here, making the sky fly all over the sky, and passengers on the train will inevitably be bitten.
What's more, the long-term decomposition of the bones of organisms produces a large number of harmful gases, which may cause damage to the health of passing train drivers and other workers, and also cause pollution to villages and farmland along the railway line.
However, in the era when science and technology were not developed, such a method of disposing of excrement was also the most environmentally friendly method, although it could not be treated, but at least it would not pollute the local water source and the land.
There is no way to do the manual work on site, but fortunately, the train itself is very fast, and once the train passes, there will be no more excrement left.
So later, the toilets on the train finally had more advanced sewage treatment equipment, first of all, the introduction of a chemical treatment system.
The system mixes toxic and harmful excrement and chemicals together to form a safe ingredient for sewage treatment, and the ejector will spray the excrement into the woods or open spaces on both sides of the track.
At the same time, disinfectant can also be sprayed on the two open spaces to ensure the environmental hygiene and safety there, and will not cause pollution to the external environment when the train passes by, causing harm to the villages along the line.
Excretory problems in train toilets.
On railways, especially on electrified railways, train toilets are sometimes combined with power supply units to form a whole, which not only vacuum collects and decomposes the waste, but also discharges the treated sewage through vacuum pipes, and then disposes the remaining solid waste into the trash can next to the tracks.
In fact, this treatment method is not new, and it is similar to the previous pharmaceutical treatment, but it is more environmentally friendly.
In this mechatronic excreta treatment system, the power supply provides power to the toilets to ensure that they can work reliably for a long time, and then discharges the wastewater through vacuum pipes to a special sewage treatment plant for treatment.
The safe excreta and chemicals treated by the equipment are then sprayed to the more ecologically rich areas on both sides of the track, where they are naturally decomposed and degraded, which is not only environmentally friendly, but also provides fertilizer for the soil for plants to grow.
And in the case of such treatment, the degree of environmental protection will not cause harm to the animals along the railway, and the whole process is more gentle and civilized.
However, the treatment of excreta in train toilets is far from complete, and although this treatment method is relatively environmentally friendly, it is only treated after the train has passed, and it does not deal with the wider environmental problem.
And this treatment method not only fails to solve the most fundamental environmental problems, but also causes a lot of accidental injury to the animals along the railway.
And this method is not perfect, sometimes there are small animals along the railway, such as rabbits, because they are afraid of the train whistling by, and they will be sprayed by the agent produced by this spraying mechanism.
This not only harms small animals, but also causes a lot of environmental pollution, so in order to better manage the excrement, the railway system has introduced a new type of vacuum toilet.
This type of vacuum toilet collects and treats excrement in a vacuum and decomposes it at high temperature and pressure, so that even if no one disposes of it, it will not pollute the environment.
At the same time, this is also the protection of the ecological environment along the way, no one disturbs the living behavior of animals, and it will not affect the ecology along the railway.
This is very important, especially on the mainland, which has a railway network that covers almost the entire country, and there are railways crossing every piece of land.
The technical problem of the disposal of train excrement has always been a difficult problem, and until now, these vacuum toilet technologies on the continental railway are constantly being improved.
Where to go for poop on airplanes.
The disposal of excreta on airplanes is also a problem, as airplanes fly at high altitudes, the air pressure is lower than that on the ground, and the oxygen is relatively thin, which makes the airdrop no longer suitable for the disposal of excreta.
This will cause the excreta to disperse into very small particles when it falls to the ground, which will not only cause air pollution, but also cause bacteria and viruses in the feces to enter the air with the dispersed gases, causing serious infectious diseases.
As a result, this type of excreta disposal is no longer permitted, and aircraft excreta is now stored in storage tanks after being disposed of on board.
After the aircraft lands, the ground crew will treat and clean up the excrement in the storage tank, and only after the disposal can the excreta be safely discharged to the ground.
In fact, this method is the same as the method of the vacuum toilet on the train, but due to the particularity of the aircraft, the new vacuum toilet cannot be installed in the toilet for use, so it can only be stored and processed.
However, this treatment also has its advantages, it does not cause pollution as it did in the initial airdrop treatment, and the excrement in the storage tank is treated in a timely manner after each plane lands.
Therefore, the disposal of excrement on airplanes is actually more environmentally friendly and civilized than that on trains.
There is also the disposal of excrement on ships and ships, and the way in which excrement is disposed of when ships and ships are sailing is actually the same as the original airdrop disposal method.
However, due to marine ecological reasons, marine life is not very resistant to this method, and coupled with the vastness of the ocean, this excrement can also be dispersed in all directions with the waves of the sea.
Therefore, this treatment method can be regarded as a disguised environmental protection effect, and it is because of this that the ocean retains the little ecological function left by our original airdrop treatment.
epilogue
In fact, in today's era of advanced technology, we already have more advanced systems for treating excrement, such as biodegradable toilets and other equipment.
Such devices can even be found on Mars rovers, where excrement is broken down and converted into fertilizer, which can be used to provide fertilizer for plants on Mars.
So, none of this is a fantasy or even not far away, what we have to do is wait for the technology to develop gradually, and the excreta disposal system is becoming more and more advanced like all other technologies.