I would like to ask if it is possible to build a biogas digester on a household basis in rural areas

OK. About 1,000 yuan.

Yes, it takes about 1500-1800 yuan to build an 8 cubic biogas digester. It is not enough to only look at the information and books, the biogas digester should be built by professionals, not built casually, otherwise there will be problems, you can contact the local biogas (energy) office, they have technical personnel to design and build for you, the department is located in the Department of Agriculture (Bureau).

Fixed arch hydrostatic digester

The fixed arch hydraulic digester has a cylindrical shape (see figure) spherical shape (see figure) and ellipsoidal shape (see figure Three types of pools. The upper gas chamber of this type of tank body is completely closed, and with the continuous generation of biogas, the biogas pressure increases accordingly. This increasing air pressure forces a part of the liquid in the digester to enter the water pressure room that communicates with the tank body, so that the liquid level in the water pressure room rises.

In this way, there is a water level difference between the liquid level between the water pressure and the liquid level in the digester, and this water level difference is called "water pressure" (that is, the value displayed by the U-shaped biogas pressure gauge). When using gas, the biogas switch is turned on, and the biogas is discharged under water pressure; When the biogas is reduced, the liquid between the water pressure is returned to the tank, so that the water level difference continues to decrease, resulting in a corresponding decrease in the biogas pressure. This kind of tank type that uses part of the material liquid to move back and forth, causing repeated changes in water pressure to store and discharge biogas, is called hydraulic biogas tank.

The state now has national debt funds to support the construction of biogas digesters every year, and each farmer who builds the pond can receive financial subsidies ranging from 800 to 1,200 yuan (mainly depending on the region). In the case you said, construction is fine, but there is only one elderly person in the family, and if there are no other livestock (at least four pigs or one cow), there will not be enough raw materials to produce biogas, so the amount of biogas produced will be small, and it will not be able to be used.

If you still have any questions, please text me on the site.

Now many places advocate the construction of biogas, thinking that it is clean energy, of course, the technology is very mature, but there are still some problems, mainly whether a household will have enough excrement and other raw materials to provide the biogas digester to produce enough biogas, and there are applicable problems, the actual situation is different in each place. You should think carefully about whether building a biogas digester is suitable.

Or you can go and see it.

I guess I'll want to apply for it.

Summary. Hello, the construction of biogas digesters in rural areas needs to be approved. The construction of biogas digesters needs to comply with the relevant local regulations and laws and regulations, and generally needs to be approved.

The specific approval process and required documents may vary from region to region, and it is recommended that you consult with your local ** relevant authorities or professional bodies for more accurate information.

Hello, the construction of biogas digesters in rural areas needs to be approved. The construction of a biogas digester needs to comply with the relevant local regulations and laws and regulations, and it needs to be approved. The specific approval process and required documents may vary from region to region, and it is recommended that you consult with the relevant authorities or professional agencies of your local government for more accurate information.

Hello, the number of ponds to build a certain scale, by the jurisdiction of the administrative area of the village of Fan Potato village up to the level of the respondent to declare, approved by the state of the Ming family to issue the investment plan, the rural construction of biogas digesters can enjoy the state subsidy.

Hello, the construction of rural Minhu biogas digester needs to be approved, the specific process is: first, the builder should declare to the Huangping County Agricultural and Environmental Protection Department; The state will take the burial times, and the environmental protection department will assess it according to the technical feasibility; third, to evaluate the investment plan; Finally, the relevant departments make an approval decision.

Rural household biogas digester is a device for producing and storing biogas, and whether its structure and layout are reasonable is directly related to whether it can produce, use and manage biogas well. Therefore, the construction of biogas digester should be reasonable in design, simple in structure, convenient in construction, durable and durable, and low in cost. In some places, due to lack of experience, insufficient attention is paid to the quality of the pool, so that the pool leaks air and water after completion, and cannot be used normally and becomes a "sick pool"; Some biogas digesters are too large and too deep, the effective utilization rate is low, and the discharge is also inconvenient.

Years of practical experience have proved that the structure of the biogas digester should be "round" (circular pool), "small" (small volume), and "shallow" (shallow pool depth); The layout of the biogas digester is mostly "three combinations" (toilet, pigsty, biogas digester) in the south, and "four-in-one" (toilet, pigsty, biogas digester, solar greenhouse) is mostly used in the north. How to build a biogas digester? How to build a biogas digester, the size and size of the biogas digester, what materials are used in the biogas digester, and how to judge whether its quality meets the requirements of the biogas digester after it is repaired, these questions can be found in the following national standards, namely:

GB4750 Rural Household Water Pressure Biogas Digester Standard Atlas; GB4751 Quality Acceptance Standard for Rural Household Water Pressure Biogas Digesters; GB4752 Rural household water pressure biogas digester construction operation code; GB7637 Code for the construction and installation of rural household biogas pipelines; GB9958 Rural household biogas fermentation process specification; GB7959 Sanitary standard for fecal harmlessness. You can also refer to DB21 T-835-94 Standard for Ecological Models of Northern Rural Energy. The construction of a biogas digester is different from the construction of residential housing and has some special requirements.

Therefore, the state has issued relevant technical standards (including relevant national standards in civil engineering) to ensure the construction quality of biogas digesters. If the quality of the pond does not meet the requirements or because the foundation of the pond is not properly treated, the biogas digester will leak and leak and cannot work normally, it is necessary to check the fault and repair it, which is time-consuming and laborious.

You can view the video of Tudou.com building a biogas digester

Search on the Internet "is one of the few high-quality entrepreneurial projects in China at present" It is strange if you want to make a fortune.

This must be in line with your environmental conditions, and the average family basically adopts 6 square meters.

It is enough for rural families to build a biogas digester of 4-6 square meters.

Then you have to look at the amount of biogas in your home, which is generally about 3 square meters.

Very simple.

A reaction vessel, a biogas appliance will do.

Preparation: The common cooking of the reaction vessel is to dig a circular pit on the ground with a depth of about 2m, leave a filler opening, a discharge port, and use cement to reinforce and prevent water leakage. Then use cement to make a bucket-shaped cover, the size of which is smaller than the pit, and the top of the air pipe interface.

Installation: Introduce an appropriate amount of wastewater into the pit, put the cement cover upside down in the pit, and connect the gas pipe to the biogas burner.

Principle: Wastewater is used to seal, when the biogas is generated, the cement hood will be lifted, and the cement hood will sink when the biogas is reduced, so that the biogas can be pressurized, and the flame is more vigorous.

Note that the size and weight of the cement hood are moderate, and in addition it is better to use a filter for the use of biogas, and there are special filters to buy.

The concrete pouring sequence must be carried out continuously, and the intermittent time shall not exceed 1 hour, and the pouring must be vibrated and compacted, and the honeycomb surface phenomenon is not allowed.

Build"mode"The first thing to do is to do a good job in the design of the biogas digester. Summarizing the experience of scientific experiments and production practices over the years, the following principles must be adhered to in the design and mode of supporting biogas digesters:

1，"Four-in-one"Principle.

Four-in-one"It means that the biogas digester is connected with the corral, toilet and solar greenhouse, so that human and animal manure continues to enter the biogas digester, ensure normal gas production and continuous gas production, and is conducive to manure management and environmental sanitation, and the biogas slurry can be easily transported to the vegetable field of the solar greenhouse for fertilizer use.

2，"Round, small, shallow"principles.

Round, small, shallow"It refers to the pool type is mainly cylindrical, the pool capacity is 6 12 cubic meters, the pool depth is about 2 meters, and the circular biogas digester has the following advantages: first, according to the geometric principle, the biogas digester of the same volume, the circular surface area is smaller than that of the square or rectangular, and it is more material-saving. Second, it has good airtightness and is relatively firm.

The internal structure of the circular pool is reasonable, the pool wall has no right angle, it is easy to solve the problem of sealing, and the force is uniform all around, and the pool body is relatively firm. Third, the temperature in northern China is low, and the round pond is placed underground, which is conducive to winter heat preservation and safe wintering. Fourth, it is suitable for promotion.

Regardless of the south and north, the construction of a circular biogas digester is conducive to ensuring the quality of the pond, so that the construction of one, the success of one, the use of one, the consolidation of one, and the active and steady popularization of the popularization. Small, means that the volume of the main pool should not be too large. Shallow, in order to reduce the depth of excavation, but also convenient to avoid groundwater, at the same time, the surface area of the fermentation broth is relatively expanded, which is conducive to gas production and fertilizer production.

3. Adhere to the principle of separating incoming and outgoing materials.

The purpose of straight pipe feeding is to make the feeding smooth and also easy to stir. The grate at the feed port is used to prevent the pigs from getting stuck in the digester feed pipe. The cover of the discharge port is to maintain environmental hygiene, eliminate mosquito and fly breeding sites and prevent people and animals from falling into the pool.