After almost two years of cleaning up the reservoir, there are several piles of dead branches and leaves in the entire reservoir area. The total landfill volume is about 200,000 tons.
Obviously this amount of biomass is not enough for the giant sacred tree.
Therefore, artificial landfills and subsequent biofertilizers formed after sewage treatment in Yinghuo City can only be used as inputs for the sacred tree to form its basic growth function.
The development of trees is basically composed of four elements: hydrogen, carbon, nitrogen, and oxygen. Hydrogen and oxygen are water.
The carbon dioxide purification function is to obtain carbon.
Considering the size of the sacred tree, the average concentration of carbon dioxide emitted by such a small population and factories in the surrounding area is somewhat insufficient.
No matter how dense the population is due to air flow, the outdoor carbon dioxide concentration will be difficult to exceed one thousandth. There is no particularly good way. To accelerate growth, we can only rely on artificial carbon replenishment.
There are two sources of carbon supplement. One is the volcanic ash in the entire dark place.
The main component of volcanic ash is carbon and a small amount of solid sulfide, so it can be used as a source of fertility to provide agricultural benefits to surrounding residents for decades after a volcanic eruption.
There are a lot of volcanic ash in the dark land, but climate problems in the early days caused the distribution to be relatively even, making it difficult to quantify the mining.
After the floating island floated for a while, relying on the steady water vapor output of the vapor cloud below, the rain gradually normalized, so a lot of volcanic ash was washed into the lowlands. Of course, more because of the unique properties of volcanic ash, it has been concreted and completely solidified. .
Anyway, it can be mined, and the amount is quite large.
The cost of the second source is relatively high, and it directly uses cinders from coal washing in Heishui and Heishan.
Cinder contains a mixture of pulverized coal soil and coal gangue. Coal gangue is a mixture of coal and mudstone. Some of it can be burned, but it is not easy to burn... Wang Qi read some strange knowledge in his previous life, saying that seeds wrapped in cinder will develop. better.
However, there is no way to use trains to transport things to the mountains surrounding the reservoir. It would be good to rely on trucks to replenish a few hundred tons a day, of which less than one-third of the carbon content is contained.
The nitrogen needed by plants mainly comes from the metabolites of microorganisms and insects in the soil, and it obviously cannot keep up with needs.
The location of the giant sacred tree is chosen in the middle of the reservoir. The main purpose is to directly cover the lake surface to minimize evaporation. In addition, the huge water body that lacks light will itself be cleaner.
There is no soil under the feet, so there is no supply of microorganisms. The few support points on the shore and under the water cannot supply enough.
So you still have to fix nitrogen yourself.
Building a biological ammonia production plant can solve the problem. Just refer to the chemical plant for specific reactions.
The ammonia production technology used by Rainbow Chemical is relatively primitive. It mainly obtains nitrogen from the air. Compared with the coal and natural gas mixed ammonia production Wang Qi had heard about, it is much less efficient and consumes more energy. But in a small kingdom, It's quite suitable, at least you don't have to buy natural gas separately.
Only this relatively primitive method is easy to biochemically convert, the conversion ratio is low, and there is enough nitrogen in the atmosphere.
Among the four basic elements, carbon is still relatively lacking.
Elements with smaller amounts are more potassium deficient.
As for the phosphorus part, during the process of world fusion, the sky once turned red and disappeared quickly. At that time, it was suspected that it had reacted with the atmosphere, and it was inferred that it was phosphide. Later, Wang Qi asked the exploration team to measure the composition of the reservoir area, and it was indeed A larger proportion of phosphides is found.
If it is really not enough, you can try to find Wengji to import struvite... which is phosphate rock.
Ongji's royal family has relatively poor governance capabilities and has formed a special national border. Before it became a floating island, it could basically be regarded as a sickle shape. Only the part near the Luna River and the coast was managed, such as the part where trade was done before. Border residents are only present when collecting taxes, and there is no administrative organization at ordinary times.
This dependence on water has led to a high proportion of sailors in Wengji, which also occupies many large and small islands, including struvite, a specialty product.
They are characterized by being far away from the land and lacking a foothold in the middle, so seabirds will gather together to form ore layers.
It's just that importing this thing consumes a lot of air transportation capacity, which cannot be taken into account with the existing air transportation capacity.
There are some solutions for phosphorus, but the potassium part is difficult.
Potassium and sodium compounds are very similar and have very high water solubility. This characteristic also makes it concentrated in areas with long-term droughts. Huge amounts of potassium are evenly distributed in seawater, and it is also a salt compound second only to sodium chloride in content.
Now the damn sea is covered with steam clouds, probably boiling water.
However, there are many islands floating in the sea, and many of them leave a layer of salt. Slowly refining the salt will always produce a little potassium.
I don’t know if this is enough, so I can only ignore it for the time being and see if it develops well. If it doesn’t, I’ll think of another way.
Next comes the serious problem, the metal part.
Wang Qi specially asked Solaris to customize the metallization function of the giant sacred tree, and there were modification instructions so that different metals could be used.
But no matter what kind of metal it is, it is not enough to build a huge city.
There are only two valuable iron mines in the kingdom, Nanzhen and Blackwater. Among them, the iron mine in Nanzhen is relatively small. It is estimated that the remaining reserves will not exceed three million tons, and only the iron element will be reduced by 40%.
The Blackwater Iron Ore is quite large, and the remaining mineable volume is expected to be at least 100 million tons. In fact, there may still be many parts with relatively low mining value.
But even if all these 100 million tons of iron are dug out, it won't be enough. Importing still involves air transportation.
And as far as the sacred tree itself is concerned, the strength cannot be improved simply by using iron.
Plants are not steel-making furnaces. They cannot produce high-temperature crystalline structures such as austenite, so the natural upper limit will be lower.
A lot of titanium ore is also needed.
Fortunately, the basic amount of titanium ore is good. There is a lot of ilmenite in the Golden Red Fortress. Because its plate is close to the kingdom, demon activities are relatively rare. Nearby are the rutile deposits in the form of titanium dioxide east of New Pettus.
Titanium has the highest density-to-strength ratio in nature and is very powerful. However, in industrial applications, titanium also has many inconveniences.
Titanium is much more troublesome to smelt than ordinary metals, and even more troublesome than tungsten. Once titanium parts are formed, they are difficult to reprocess. Cold rolling is not possible, and hot rolling is easy to oxidize. Gas protection is required in products that do not require surface oxidation.
The superposition of the two makes the application threshold of titanium ingots too high. Unless the production capacity is so large that there is no room, it will be difficult to popularize it in the civilian field.
Therefore, although Phoenix Steel has already produced titanium and titanium alloy products, the mining volume is not very high. The two nearby mines are enough to produce two to three hundred years.
There is another advantage to using titanium. The Golden Red Fortress was built by Wang Qi through fumbling. He has some experience in the form in which the titanium element in the sacred tree can flow.
But there is still the same problem. There is an order of magnitude difference between transportation capacity and demand. Even for land transportation on the island, loading and unloading capacity, number of vehicles, drivers, etc. must be considered.
Generally speaking, the development of the giant sacred tree cannot be rushed. It can only be done bit by bit. First, develop a structure about the size of Phoenix City, pull up the water and land bridge, and then slowly find materials later.
