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Volume 2 Traffic Police Chapter 687 Biogas System Construction

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    Traditional fermentation technology must use excrement as raw material, and there are certain limitations in the use of materials. After all, we are in rural areas, and the sources of excrement are very narrow. In addition to the excrement of local villagers, there are only livestock excrement, which is difficult to produce.  Once the villagers' excrement is not enough, there will be no raw material such as feces, which will easily lead to insufficient gas supply and no biogas for a long time.  At the same time, it is very easy to "crust" when using manure for fermentation. The composition of manure is complex. If there are many floating objects, it is easy to form an airtight shell on the top layer. Due to the lack of oxygen, the fermentation slows down, and the biogas produced at the same time also  It is impossible to get out, which requires frequent stirring of the fermentation tank. However, the management and services of the fermentation tank in rural areas are very inadequate. It is difficult to complete this process in any place. This is an important reason for the slow development of biogas in rural areas.  And biogas is not only limited by local conditions, but also greatly affected by ambient temperature.  Generally speaking, biogas is buried underground and is in a closed state, and the impact of temperature is very large.  In the summer, the temperature is higher, the fermentation reaction is violent, and the gas production is large. It is too much to be used in the name of the village. Therefore, it must be exhausted in time. However, if the exhaust is not appropriate, the pool will easily swell, that is, the air pressure will be too high.  , will cause the closed pool to swell and cause air leakage.  In winter, because the temperature is too low, the activity of the fermentation group is insufficient and insufficient biogas cannot be produced, so the biogas tools cannot be used normally, especially in cold places. As a result, they can only be used for half a year and are inconvenient to use the rest of the time.  In addition, traditional biogas digesters must ensure that fresh materials are fed in, discharged and mixed every day before they can be used, and the materials inside must be emptied every year.  Clean up accumulated impurities.  It is very inconvenient to manage.  at the same time.  Most of the biogas pools are made of bricks, but because the biogas contains hydrogen sulfide, it is very corrosive to the cement, and air leakage will occur after a short period of use.  Once air leakage, corrosion and other problems occur, repairs are required. During repairs, all raw materials need to be cleaned before they can be re-plastered and sealed.  Someone said, why not use a plexiglass pool, which is more airtight.  It is anti-corrosion and durable, but plexiglass is expensive, which is a huge expense for farmers.  Moreover, the construction of a traditional biogas tank is a labor-intensive and time-consuming project. For example, a 6-10 cubic meter tank, which is a more general model in Ruonei, requires about 8-13 cubic meters of earth excavation and takes a week.  Only then can it be completed.  It takes at least a week of curing before loading, and a month before normal use.     Labor costs.  Time costs and capital costs are all spent, but once the user moves, the pool cannot be taken away, and the only choice is to abandon it. Judging from the current state of rural population migration, there are definitely not a few abandoned pools.  The experts always advocate that the fermented raw materials can be recycled economically and used to fertilize the soil. This is a theory like a castle in the air. You must know that traditional biogas digesters use semi-continuous fermentation, that is, they are fermented every other day.  What will happen if new raw materials are poured into the pool?  This will cause the previous batch of fermenting raw materials to be suddenly mixed with new raw materials and new air, making the raw materials fermented incompletely and incompletely. What will happen?  As a result, the final fermentation raw materials become a mixture of raw and cooked materials, that is, incomplete fermentation and complete fermentation materials are mixed together, and raw materials, that is, raw materials with incomplete and incomplete fermentation, contain various pathogens. Please note  , the main components of these raw materials are human and livestock feces, which contain a lot of pathogens.  If you use this kind of fertilizer containing pathogens for planting, it will be strange if you can grow good crops, but it will not pollute the land.  This has greatly affected the comprehensive utilization of biogas slurry and biogas residue, which is completely different from the theoretical virtuous cycle.  Therefore, the existing rural biogas has a saying that "it is good in one year, leaks in two years, and is discarded in three years." This means that the disadvantages of biogas digesters are too great. Many villages that have been renovated have returned to the state after several years of complaints.  When they arrived at the primitive procession of burning firewood, they abandoned the biogas pool and completely abandoned it.  The early government subsidies and the farmers¡¯ own investment were all wasted, and they didn¡¯t even get their money back. This is the practical situation of rural biogas construction that is being advocated across the country.  Of course, it is not ruled out that there are places with relatively complete management and services. In addition, those places have stable temperatures all year round and biogas construction is very efficient. However, these are only a small number of places, and most places are not as promising as theoretically.  Considering the area of ??Hualuo County and the actual situation of Niuqian Village, the results of biogas construction are almost foreseeable. The money invested will be wasted within three years, and it will eventually become a political achievement project that wastes people and money.  Being asked directly by Liu Yu, Zhou Xuan couldn't help losing face. Liu Yu was already very dissatisfied when he asked such a question. Zhou Xuan had to bite the bullet and answer: "My work is not meticulous enough and serious enough. I will make corrections next.".  " Liu Yu closed the planning book, threw it back, and said in a solemn voice: "You should know better than others the importance I attach to the construction of new rural areas. Do what you are told to do seriously. When the time comes, you will be indispensable for the specific work.  understand?  " Zhou Xuan's face was burning, and she was secretly annoyed. She really didn't pay much attention to this plan. She asked the people below to refer to the previous new rural construction. Unexpectedly, she was severely criticized by Liu Yu. However, Zhou Xuan  I heard the implication of the last sentence. In the end, she will take the lead in promoting new farmers in the county. This means that there will be a lot of funds flowing through her hands. If you have money, it will be easy to do things, and doing good things will be political achievements. As for the  Making money depends on whether Liu Yu will turn a blind eye or keep an eye on it. The important thing is to achieve political achievements. After Zhou Xuan left, Liu Yu sighed helplessly.  Tone: "Hey, it's not easy to be a leader. There are too many people in charge. The people below complain that their hands are tied and can't start work, but don't pay attention. The people below don't try their best. I personally took Zhou Xuan to Niuqian Village for inspection.  , can she understand the importance I attach to the construction of new rural areas?  Even so, in the end, such an unsatisfactory plan was lost.  "What Liu Yu can do is to catch you hard. Since you don't want to do things, don't blame me for intervening. When the time comes, you will be tied up, and don't blame others! In the evening, Tao Linjia came to Liu Yu's residence to sit for a while, and brought  When Yang Qiuyun came, it was about the situation of the Agricultural Foreign Trade Company. Yang Qiuyun was beaming: "County Magistrate, Tyson gave feedback on the sales situation there. I got a sales report through the channel. Judging from the feedback and the report.  Hualuo's chestnuts sell well there, and all the 500 tons of chestnuts that went there were digested. Moreover, compared to the chestnuts imported by Tyson from other channels, our Hualuo chestnuts sell at a higher price and sell faster.  Sen is very satisfied and will send a professional negotiation team to sign a chestnut purchase contract for next year in the near future.  ¡± ¡°Intuitively, Tyson¡¯s next order must be very big, because not only do we have good Hualuo chestnut sales and high profits, but also, judging from the report, the wholesale volume of Tyson chestnut this year has increased by 10% compared to last year.  Knowing that the other party's annual sales growth rate has been below 5% in the past three years, I speculate that it is probably because our Hualuo chestnuts have received a good response from the distributors, and the distributors have increased their purchases from Tyson.  " "So, if nothing else, Tyson's order next year will be quite large. Its 20,000-ton quota, even if it is divided into 5,000 tons, is completely enough to meet the county's output. Even if Tyson's order exceeds 5,000 tons, it will be enough to meet the county's production.  If it's a thousand tons, our agricultural foreign trade in Hualuo needs to purchase it from other counties. We can make a profit from the price difference between the collection and the sale.  ¡± It sounds good, but this is normal. Chinese chestnuts are better than those from France and Portugal in terms of import price and taste. Unless Tyson has trouble with money, it will only increase the purchase volume in the next batch of orders.  By reducing the amount of European chestnuts, it seems that Tyson has also tasted the benefits of the Chinese market. Of course, Liu Yu did not forget to praise Yang Qiuyun. She was able to get a sales report of the company from Tyson, which is enough to prove her success.  There is something special about it. Sales reports are not something that just any small fish in Tyson can get, especially foreign trade, which is more important. It is conceivable that Hua Luo has mastered it in the next business negotiation.  Regarding the sales of Tyson chestnuts, of course, there is more room for negotiation. It is possible to accurately understand Tyson's bottom line without being confused and being severely reduced by Tyson. This report is very important!  Who is able to get this report from Tyson, and is it someone with some status that Yang Qiuyun has come into contact with? Could it be that proud woman Slisha? Now that I think about it, she is the only one  , how arrogant do you think you are, under the offensive of money relations, why don¡¯t you just act like a traitor and sell our business intelligence?  You can¡¯t just deal with Tyson, and you can¡¯t just focus on chestnuts. Agricultural products that have export advantages in the county must go abroad!  "This is to remind Yang Qiuyun not to turn the agricultural foreign trade company into a chestnut foreign trade company, but to develop in many aspects. As Liu Yu mentioned, you cannot put all your eggs in one basket. The biggest risk in international trade is undoubtedly  It is a political risk, which is completely different from domestic trade. In domestic trade, there is basically no need to worry about the impact of policies. Although the protection policies for local products in various places were very confusing twenty years ago, nowadays, there is basically no such barrier.  Even if there is, it is very small, and Fengshan¡¯s products are not allowed to be sold in Shoushan. This phenomenon has basically disappeared. But the international trade is different. The other country¡¯s policy does not greet China, and it is impossible to take care of Chinese businessmen.  , and even, on the contrary, there are many policies targeting Chinese goods, often under the banner of customs entry standards for various products.There are too many policies to boycott Chinese products internationally, and once similar boycotts are encountered, it means that a large number of products are unsalable, and unsalable products are a devastating blow to agricultural products with a short shelf life.  Therefore, it is necessary to prepare several more roads. If one road is blocked, go to another road immediately to avoid being hit on a dead end.  (To be continued)
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