Why is the use of biogas not promoted and what is it

At present, the biogas fermentation in China requires a large amount of water, and the biogas digester occupies a large area, which is affected by climatic conditions and raw material conditions, and the gas production is not stable. Although biogas slurry and digestate can ideally be used for agriculture, it is not so easy, and there is currently an overuse of biogas residue in Germany, resulting in excessive nitrogen content in rivers and eutrophication of lakes. Biogas residue also needs professional disinfection and sterilization without reducing fertilizer efficiency, which is not easy to operate.

There are also many details in the operation of the biogas digester itself, and there are many hard problems in the process flow and equipment, especially in cleaning and maintenance. In addition, it also involves the inflow of toilets, stoves, and other materials into the pool, as well as the laying of pipes for gas to households. Ideally, high-power biogas plants should be designed and managed on a village-by-village basis, with consent to gas, heating and even power supply, and unified post-processing.

Instead of a single-family small pool, an underground pool. It can be said that improper treatment of biogas slurry and biogas residue is definitely polluting to the environment! In addition, biogas itself is not like natural gas, contains sulfur, and requires a one-step desulfurization process, and Germany has only begun to use biogas and natural gas in the grid in recent years, so that the application scope of biogas can be expanded.

In addition, although biogas combustion itself is a clean energy, it still produces greenhouse gases, which is a drawback compared to solar and wind energy. Of course, the investment cost is much cheaper. Just thinking about some problems sporadically can only show that there are reasons not to advocate it, but it is not sufficient.

How so?

There's no reason not to advocate it! In the process of advancing, all sciences naturally have: discovering problems - solving problems; The process! Feasible with current technology! In general, it is good for people, society, and individuals!

Don't let temporary or one-sided difficulties dismiss the big picture!

Welcome to the conversation!

The main components of biogas are methane and carbon dioxide. It is a combustible gas produced by organic matter under the condition of isolating air and a certain temperature, humidity, pH, etc., through the action of biogas bacteria.

Methane, the main component in biogas, is basically non-toxic, but once the content of methane in the air reaches 25%-30%, people will have headaches, dizziness, fatigue, poor concentration, breathing and rapid heartbeat. If you don't stay away in time, you can die of suffocation.

Encounter the treatment method of biogas**.

1) Lie down immediately, lie on the ground and do not move, or squat down quickly with your head in your hands, or take cover with other objects.

2) **Cause disaster**, when the smoke is filled, take appropriate protection, try not to inhale smoke and dust, press your body down as much as possible, and crawl to a safe place with your hands and feet.

3) Call 119 fire alarm ** immediately, if anyone is injured, call rescue** for help or go to the nearest hospital for treatment.

4) When evacuating the scene, try to stay calm, do not panic and confusion, and obey the command of professionals to prevent panic and increase again.

Biogas, which everyone is no stranger to, is, as the name suggests, the gas in the swamp. It is a mixture of gases with methane as the main component. Manure, leaves and stems of crops, weeds, etc., are isolated from the air, and biogas is produced through microbial fermentation as long as there is a suitable temperature and humidity.

Biogas is a mixture of organic matter produced by microbial fermentation under anaerobic conditions.

Biogas, as the name suggests, is a gas found in swampy wetlands. It's not uncommon to see bubbles coming out of swamps, sewers or manure tanks that can be lit if we strike a match, which is a natural occurrence of biogas.

From the perspective of scientific definition, biogas is a combustible gas produced by the fermentation of microorganisms by various organic substances in isolation from air (reducing conditions) and at a suitable temperature and pH value. Biogas is a secondary energy source and is a renewable energy source.

It is an ideal gaseous fuel, it is colorless and odorless, and it will burn when mixed with the right amount of air.

Straw biogas refers to a kind of combustible gas produced by the anaerobic fermentation of biogas bacteria using biogas equipment with straw as the main raw material in a strict anaerobic environment and under certain temperature, moisture, pH and other conditions. Straw biogas, also known as straw biogasification, can be divided into three categories according to the size of the project (pool capacity) and the way of utilization: one is rural household straw biogas, with a pool capacity of 8 12 cubic meters, with farmers as the construction unit, biogas is produced and used by itself.

The second is the centralized gas supply of straw biogasification, which belongs to small and medium-sized biogas projects, with a pond capacity of 100 200 cubic meters, and the construction of biogas fermentation devices and gas storage equipment in natural villages is carried out through the pipe network, and the biogas is transported to farmers' homes through the pipe network. The third is the large and medium-sized straw biogasification project, the pool capacity is generally more than 300 cubic meters, mainly suitable for large-scale plantations or farms straw centralized treatment, the biogas produced is mainly used for power generation.

Biogas combustion power generation is a biogas utilization technology that has emerged with the construction of large-scale biogas digesters and the continuous development of biogas comprehensive utilization, which uses the biogas produced by anaerobic fermentation treatment for the engine, and is equipped with an integrated power generation device to generate electricity and heat. Biogas power generation has the characteristics of efficiency, energy saving, safety and environmental protection, and is a widely distributed and inexpensive distributed energy resource.

In fact, pastures can play this ability very well, which is now called "ecological pastures".

Looking forward to the land of China, each ranch is the commitment of Sifang Leou people to China's dairy industry, through fine and scientific ranch planning and management process control planning, so that the yield of dairy cows, milk fat content, milk protein, dry matter content and somatic cell number in each pasture in each pasture have reached the international level and the environmental protection of the pasture meets the national environmental protection requirements.

With the courtyard "one pond and three reforms" as the basic unit (i.e., household biogas digester and kitchen, toilet and circle), the biogas produced is mainly used for farmers' cooking technology.

Methane. Generally, manure or distiller's grains are used as raw materials, and straw is not used (straw is made of carbon at high temperature, and the efficiency of straw biogas production is not high). Biogas is generally used for natural gas or power generation.

Biogas is a mixture of a variety of gases, generally containing methane 50 70, the rest is carbon dioxide and a small amount of nitrogen, hydrogen and hydrogen sulfide.

The main ingredient is methane, but it also contains some other combustible gases.

Biogas is a kind of combustible gas produced by microbial fermentation of organic substances in an anaerobic environment under certain temperature, humidity and pH conditions. Since this gas was first found in swamps, lakes, and ponds, it is called biogas. Biogas contains a variety of gases, the main component of which is methane (CH4).

The process by which biogas bacteria decompose organic matter to produce biogas is called biogas fermentation. According to the role of various types of bacteria in the biogas fermentation process, biogas bacteria can be divided into two categories. The first type of bacteria is called decomposers, which are used to break down complex organic matter into simple organic matter and carbon dioxide (CO2), etc.

Among them, there are those who specialize in breaking down cellulose, called fibrolytic bacteria; There are those that specialize in decomposing proteins, which are called proteolytic bacteria; There are those that specialize in decomposing fat, called lipolytic bacteria; The second type of bacteria is called methane-containing bacteria, commonly known as methane bacteria, which oxidizes or reduces simple organic matter and carbon dioxide to methane. Therefore, the process of turning organic matter into biogas is like the two processes of producing a product in a factory: first, the bacteria decompose and process complex organic matter such as manure, straw, and weeds into semi-finished products – compounds with simple structures; Then there's the methane bacteria that process simple compounds into products – methane.

The advantages are environmental protection, waste utilization, and low cost.

Disadvantages: Contains hydrogen sulfide gas, which is toxic. It also contains a variety of miscellaneous gases and odors!

The main components of biogas are methane (CH4) and the combustion products are water (H2O) and carbon dioxide (CO2), which has advantages: it can be used for crops such as straw and livestock manure, reducing pollution and saving energy.

Disadvantages: The carbon dioxide produced creates a greenhouse effect.

It is easy to ignite with a low ignition point.

Biogas is a combustible gas that is called biogas because it was first found in swamps.

Biogas is a gas mixture consisting mainly of methane (CH4) and the rest carbon dioxide (CO2), oxygen (02), nitrogen (N2) and hydrogen sulfide (H2S). The methane content is about 55% to 70%, and the carbon dioxide content is about 30% to 45%.