Sister Han is good at farming

Chapter 209 Found a treasure

"Doctor Li doesn't have any good solution for the time being. But Miss Yue, don't be discouraged, maybe there will be a turning point in the future!" Ruan Qingqing comforted.

Yue Linlang's bright smile fell instantly, "Well, I understand."

After a day's rest, Zhuge Hong came to Ruan Qingqing with his hands behind his back, "Master, I heard that you have something important that needs us to make urgently. What is it?"

Later, Lu Dunren and Yue Linlang also came to ask.

"Originally I wanted you to rest for a few more days, after all, you are exhausted from the journey."

"No, we can't sit still. I've heard that there is a great carpenter in Qingshui County, and the things he made are very ingenious. I think that carpenter must be you, Master. I'm also curious about what kind of exquisite things you asked us to build."

Ruan Qingqing chuckled, "There are other great carpenters, but it is true that what I need to build is a bit peculiar."

Seeing that they really wanted to work, Ruan Qingqing immediately showed them the drawings of the biogas tank.

"I want to build a biogas digester, a fermentation tank that is different from ordinary septic tanks. Ordinary septic tanks have shortcomings such as slow decomposition, foul odor, regular manure extraction, large transportation volume, inconvenient management, and easy explosion. Biogas digesters not only make up for the above shortcomings, but also produce a gas that can be used for cooking."

"It can be used to make fire and cook~" Zhuge Hong drew out his tone and glanced at her.

"That's right!"

"This is something that cannot be seen or touched, and it is difficult to control."

Ruan Qingqing nodded again, "I would like you to make the feed pipe, discharge pipe, gas storage box, hydraulic tank, gas pipe cover and gas flow rate regulating valve in this biogas tank. The gas storage box and gas pipe should be strong and durable, well sealed and not easy to rust. I wonder if you can meet this requirement?"

"I see that you want more than just the air storage box and the air duct to be sealed, right? The fermentation room you marked should also have good sealing. Is this movable cover necessary? Wouldn't the sealing be better without it?" Lu Dunren asked, pointing at the movable cover on the drawing.

"The advantage of setting up a movable cover is that it allows ventilation and light, and is convenient for pool construction and maintenance. The cover can be removed to mix the materials, which is conducive to gas production and removal of manure residue. The feed pipe, discharge pipe and skylight are ventilated in three ways, making work safe and convenient. This cannot be missing." Ruan Qingqing said seriously.

"Then what material are you going to use?" Lu Dunren asked again.

"The movable cover can be made of either stone or concrete."

"It's not easy to make both of these things seal properly, not to mention that we have to connect the air duct to the movable cover." Zhuge Hong shook his head.

Yue Linlang, who had been silent the whole time, spoke up: "It's not impossible. I heard from my father that there is a kind of water grass in the East China Sea that can be burned into ashes, mixed with water and stirred into mud. Apply it to the gaps to make the objects leak-proof. Maybe we can try to apply it to the welding point between the movable cover and the air guide tube. We can even mix it directly into the mortar to improve the viscosity and sealing of the mortar."

Zhuge Hong stroked his beard and said, "This is feasible. I have also seen this water grass. In the early years, when I was making refining tools for alchemists, I used this grass. It can indeed greatly improve the sealing of the tools."

Ruan Qingqing hesitated, "Is there any other way? It's quite far from here to the East China Sea, and I can't wait."

"There are other ways, but I have to think about them carefully." Zhuge Hong frowned.

"Okay, but you don't have much time to consider. I will determine the location of the biogas pool in the next two days, and then find someone to start digging. I hope to be able to ferment the first wave of fertilizer in a month. Otherwise, it will not be in time to apply base fertilizer to the late rice." Ruan Qingqing's eyes showed a hint of anxiety.

Zhuge Hong and the other two looked at each other, and nodded as if they had made some kind of decision.

"Okay! We'll try our best!"

Although the three men did not look big and strong, they were very efficient and resolute in their work. Before Ruan Qingqing's swamp pond was finished, they had already discussed and worked out a practical plan.

When the people in Zaoziling saw that Ruan Qingqing was making a big move again, they all came to her house to ask what she was doing.

When they heard that they were making a new type of composting pond, they didn't care about anything else and shouted to wait until Ruan Qingqing's house was finished, and then asked the masters to go to their house to help build one.

Which of them is not in urgent need of fertilizer now?

Nowadays, people are planting much more fields than before. Even if there is pig, duck and chicken manure, it is of no help, and green manure takes up too much space.

When everyone had finished planting the early rice, the biogas digester in Ruan Qingqing's home officially began to be used.

The three of them were more powerful than she expected, and the swamp pool was extremely well sealed.

After every household in Zaoziling had built a swamp pond, Ruan Qingqing couldn't help but have other ideas.

If something like a biogas lamp could be designed, it would be a real blessing for this era. After all, most people in this era light oil lamps, candles, torches, etc. at night, and the flames are not only weak but also easily affected by the wind. It's a pity that biogas is only used for cooking.

But the people in Zaoziling are very satisfied that the gas from the biogas digester can be used to boil water and cook. You know, chopping wood is no longer a matter of climbing two mountains.

Now that life is better, children are born one after another, and the population of Zaoziling is growing explosively. The family needs a lot of firewood, but there is nothing left to chop in the nearby mountains, so they have to go to farther places. It takes a lot of time to chop firewood, and it is a huge workload that cannot be saved.

The soybean stalks, straw, corn stalks, etc. that are harvested at ordinary times should be cut up and used for composting or fermentation. After all, the fertilizer in the field cannot be less, otherwise the fertilizer for the crops in the field will not be enough.

Nowadays, when I come back from working in the fields, I don’t have to look around like searchlights to see if there is anything I can pick up and burn as I did before; I don’t have to stand up from the fields and immediately rush to the mountains to fetch some firewood without going home to rest; or get up early in the morning to collect a load of firewood and then eat and go back to work in the fields.

Now when I get home, I just need to turn on the switch to light the fire, boil water and cook, and I don’t even need to put firewood into the stove hole from time to time. Not to mention lying in front of the stove hole and blowing air with a long bamboo tube that has been opened through the bamboo joints to make the fire burn more vigorously.

The idle people in Zaoziling joked: "The only downside to using the biogas stove is that there is no stove ash. When we plant potatoes next year, we have to prepare some firewood to burn the stove ash."

"Oh! You are such a stubborn person. Aren't the ashes from the stove the same as the manure we burn? You really don't know how to adapt. You don't want to enjoy the good life, but insist on running back to suffer in your stubborn way."

"If you say so, it's true!"

As a result, everyone stopped chopping firewood, and the nearby mountains became green again.