Doomsday Bunker Upgrade Chapter 35: Sudden water cut off

A month has passed without any surprises. During this month, Chen Xin's life has not changed much. He wakes up from the alarm on his mobile phone every day, just like he used to sleep until he wakes up naturally every day.

　　 There is no day in the refuge, and it is meaningless to judge day and night by light. In order to avoid sleeping and not knowing the time, Chen Xin reset the alarm on his mobile phone.

　　 Since quitting his job a few years ago to write a novel, this is the first time that Chen Xin has turned his mobile phone alarm back on.

　　 But returning to a regular schedule 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 apart 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 Do more than ten minutes of exercise and exercise.

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

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

　　After turning on the generator to power the entire shelter, he will spend the morning in the planting greenhouse.

　　 Although we don’t need to weed and remove insects, watering, fertilizing, and soil loosening are still needed.

　　 Watering and loosening the soil needless to say. Although Chen Xin has not done it before, but with the video data in the computer, he can still make the difference and basically meet the requirements of planting.

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

　　 The only thing Chen Xin can't stand is fertilizing.

Chen Xin did not buy fertilizer when he moved into the shelter. The soil in the greenhouse was also obtained from the vegetable garden of the nearby farmer's uncle. Of course, the soil quality is not a problem, and the farmer's uncle's own vegetable plot. I usually grow vegetables for my own consumption, so I have never used chemical fertilizers and pesticides.

　　 But when the farmer sold the soil to Chen Xin, he also reminded him that if he wants to grow delicious vegetables, he must remember to fertilize.

　　The fertilization mentioned by the farmer's uncle is of course not chemical fertilizer, but the legendary...farm manure.

　　 This thing is simply to use the previously introduced black water part in the refuge water circulation system, the liquid obtained after fermentation, 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. .

　　 is a very common facility in the rural areas of Yan Country. It was widely promoted in the 1990s to treat rural human and animal waste and 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. Residues of water, shampoo and washing powder cannot be directly added to the biogas digester, because these things will kill the decomposing bacteria in the biogas digester.

Chen Xin had also considered using biogas as an energy source 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 No biogas is used as energy source.

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

　　 is just the smell of the fermentation tank used for sewage treatment...

　　 The smelly socks that haven't been washed for a month in the boys' dormitory are compared with the fermentation tank that hasn't been opened for a month. This is probably the difference between stinky tofu and canned herring.

　　 That sourness... Chen Xin entered with his gas mask, but still almost all the tears came down.

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

　　The recycled sewage that had been fermented for a month was packed into the planting 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 and refreshing, it must be said that nature is a complete cycle. It is the organic matter that is decomposed that can make plants thrive.

　　 After fertilizing, it was watering. However, what surprised Chen Xin today was that when he watered halfway, there was no water in the water pipe.

This made Chen Xin pale in shock. He hurriedly went to the water tank and sewage treatment tank to check, and found that his water tank, which could store three tons of fresh water, was empty~IndoMTL.com~ and the sewage collected in the sewage treatment tank was only half Full state.

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

　　 However, there is no water if there is no water. Although there is still a lot of drinking water for drinking, only two and a half boxes of purified water are used, and there is still a lot of inventory, but the domestic water and the greenhouse water are not Already 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.

　　Using drinking water to supplement domestic water is the last choice made when there is no other way, but Chen Xin would not do that if there are other options.

　　 Without 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 refuge and go out to find fresh water resources.

A month has passed, and the fire caused by the meteorite impact should be extinguished with the gradually falling temperature after the sky is covered by dust. It should not be too big to leave the shelter now. danger.

And this itself is one of Chen Xin's original plans. After entering the shelter for a month, open the shelter, go out and install the antenna of the shortwave radio, and at the same time get in touch with other survival group companions, if possible, also can Exchange supplies with several companions in this city.

　　 At least Chen Xin can be sure that a companion in the city didn't plan to grow a greenhouse. Bringing fresh vegetables over there was a way to exchange a lot of things with her.

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