Doomsday Bunker Upgrade

A month passed quietly, and Chen Xin's life did not change in this month. He woke up from the alarm on his mobile phone every day, just like he used to sleep until he woke up naturally every day.

There is no daylight in the shelter, and it is meaningless to judge day and night by light. In order to prevent himself from falling asleep without knowing the time, Chen Xin reset the alarm on his mobile phone.

This is the first time Chen Xin has turned his mobile phone alarm back on since he quit his job a few years ago to write novels.

However, returning to a regular routine is also a brand new experience for Chen Xin. At least he feels that his mental and physical conditions have improved a lot.

And regular work and rest time naturally brings regular work and rest habits. After getting up, brushing teeth and washing face, Chen Xin will tear open a generation of self-heating food for breakfast, and while waiting for self-heating food to heat up, he will take advantage of this time to do more than a dozen Minutes of exercise, exercise your body.

Wait until the warm-up is over and breakfast is already cooked, and eating at this time will make people more appetizing.

In the morning after eating, Chen Xin will first check the operation of various equipment in the shelter, and fill up the generator with oil.

After turning on the generator to power the entire sanctuary, he spends his mornings in the growing greenhouse.

Although there is no need for weeding and pest control, watering, fertilizing, and loosening the soil are still to be done.

Needless to say, watering and loosening the soil, although Chen Xin has never done it before, but with the video data in the computer, he can still do it well and basically meet the requirements of planting.

Although these vegetables cannot be said to be very lush, they are basically growing healthily, and there is nothing wrong with them.

The only thing that made Chen Xin a little unbearable was fertilization.

When Chen Xin moved into the shelter, he did not buy chemical fertilizers. The soil in the greenhouse was also obtained from the vegetable garden of the nearby farmer's uncle. Of course, the soil quality was not a problem. I grow vegetables for my own consumption, so I have not used chemical fertilizers and pesticides.

However, when the farmer's uncle sold the soil to Chen Xin, he also reminded him that he must remember to fertilize if the vegetables he grows are delicious.

Of course, the fertilization that the farmer's uncle said was not chemical fertilizer, but the legendary ... farmyard manure.

Simply put, this thing is the liquid obtained after fermentation using the black water part of the water circulation system of the refuge, and the gas produced during the fermentation process is the legendary biogas.

Under normal circumstances, biogas digesters are usually built in rural areas. The wastes of humans and animals, straw and other organic matter are filled into the digesters, and methane is generated under the decomposition of biogas bacteria, which can be used for daily cooking, heating, lighting and power generation.

It is a very common facility in the rural areas of the Yan Kingdom. It was vigorously promoted in the 1990s for the treatment of human and animal excrement in rural areas and to improve rural living conditions.

The same principle applies to the black water treatment system in the sewage treatment system installed by Chen Xin, which uses bacteria to decompose the organic matter in the recovered black water, thereby realizing the recycling of water resources. The residue of hair liquid and washing powder cannot be added directly to the digester, because these things will kill the decomposing bacteria in the digester.

Chen Xin had also considered using biogas as energy in the shelter before, but after calculating, he found that his own excretion volume was not enough to meet the gas production needs of a biogas digester, so he had to give up this idea and did not use biogas as energy.

However, even if biogas energy is not used, biogas digesters can still be used as an important means of sewage treatment, which can effectively decompose organic matter in sewage and accelerate the recycling of water resources.

Just the smell of a fermenter used for sewage treatment...

Comparing the stinky socks that haven’t been washed for a month in the boys’ dormitory and the fermenter that hasn’t been opened for a month, it’s probably the difference between stinky tofu and canned herring.

That sour... Chen Xin went in with his own gas mask, but the tears that were still almost smoked came down.

Fortunately, the sewage treatment tank is outside the container room, and Chen Xin has turned on the forced ventilation considering the smell of this thing, so the smell will not permeate the entire shelter.

The recycled sewage that had been fermented for a month was packed into the greenhouse by Chen Xin in plastic buckets prepared in advance, and then poured into the soil one by one.

Although the taste of this thing is really sour, it has to be said that nature is a complete cycle, and it is these decomposed organic substances that enable plants to thrive.

After fertilizing, watering is followed by watering. However, what surprised Chen Xin today was that when he had watered half of the water, there was no water in the water pipe.

This made Chen Xin pale in shock, and hurried to the water tank and sewage treatment tank to check, and found that his water tank that could store three tons of fresh water was empty, and the sewage collected in the sewage treatment tank was only half full.

Looking at the empty water tank, Chen Xin didn't understand why the sewage treatment tank and the water circulation system even collected the water vapor in the air, but still ran out of water.

However, if there is no water, there is no water. Although there is still a lot of drinking water for drinking, only two and a half boxes of pure water have been used, and there are still a lot of stocks, but the water for domestic use and greenhouse cultivation has been exhausted. .

Now Chen Xin must find a way to replenish fresh water, otherwise he will fall into a crisis of water shortage, or use stored drinking water to supplement domestic water.

Supplementing domestic water with drinking water is the last choice when there is no other way, but if there are other options, Chen Xin will not do it.

Instead of using drinking water to supplement domestic water, Chen Xin has only two choices.

First of all, Chen Xin can choose to take the risk to open the door of the sanctuary and go out to find fresh water resources.

A month has passed, and the fire caused by the meteorite impact should have been extinguished with the gradually falling temperature after the sky was covered by dust over time, and it should not be too dangerous to leave the shelter now.

And this itself is one of Chen Xin's original plans. After entering the shelter for a month, he will open the shelter, go out and install the antenna of the short-wave radio, and at the same time get in touch with other survival group companions. Several companions in the city exchanged materials.

At least Chen Xin can be sure that a companion in the urban area is not planning to grow a greenhouse, so he can exchange a lot of things with her by bringing his own fresh vegetables.

But there is a problem with this, and that is how Chen Xin can bring the fresh water back.