1. Biomass energy is the energy provided by living plants in nature. These plants use biomass as a means of storing solar energy and are renewable energy sources. Biomass energy can be converted into conventional, inexhaustible, inexhaustible solid, liquid and gas fuels. It is a renewable energy source and the only renewable carbon source. According to different sources, biomass suitable for energy use can be divided into five broad categories: forest resources, agricultural resources, domestic wastewater and industrial organic wastewater, municipal solid waste, and livestock and livestock manure. poultry.
2. Forest biomass resources refer to biomass energy provided by forest growth and forest production processes, including fuelwood forests , scattered wood and residue to forest maintenance and thinning operations. leaves and sawdust, etc. ; branches, sawdust, sawdust, tips, boards and truncations during extraction, transportation and processing of wood;
3. Agricultural biomass energy resources refer to agricultural crops (including energy crops) in the agricultural production process, such as crop straw remaining in agricultural land during harvest (corn); straw, sorghum straw, wheat straw, rice straw, soybean straw and cotton straw, etc.); waste from the agricultural processing industry, such as rice husks remaining in the agricultural production process. Energy plants generally refer to various plants used to provide energy, including herbaceous energy crops, oilseed crops, hydrocarbon-producing plants, and aquatic plants.
4. Sewage and sewage. Domestic sewage mainly consists of various drainages from urban residents' lives, commerce and service industries, such as cooling water, bath drainage, toilet drainage, laundry rooms, kitchen drainage, fecal wastewater, etc. Industrial organic wastewater is mainly wastewater discharged from production processes in the alcohol, brewing, sugar, food, pharmaceutical, papermaking and slaughtering industries, etc., all of which are rich in organic matter.
5. Solid waste. Municipal solid waste mainly consists of solid waste such as domestic waste from urban residents, commercial and service waste, and a small amount of waste from the construction industry. Its composition is relatively complex andis affected by factors such as the average living standard of local residents, energy consumption structure, urban construction, natural conditions, traditional habits and seasonal changes.
6. Livestock and poultry manure. Livestock and poultry manure is the general term for livestock and poultry droppings. It is the form of processing other forms of biomass (mainly cereals, crop straw and pastures, etc.), including feces, urine and litter excreted by livestock and poultry .
7. Biogas. Biogas is a fuel gas converted from biomass energy. Biogas is a mixture whose main component is methane (CH4). Biogas is a mixed gas generated by the microbial fermentation of organic materials under anaerobic conditions. Since this gas was first discovered in theswamps, it is called biogas. Various organic materials such as human and animal manure, straw, sewage, etc. are fermented in a closed biogas tank under anaerobic (oxygen-free) conditions, and are broken down and transformed by a wide variety of biogas fermentation microorganisms. This produces biogas. Biogas is a mixed gas that can be burned. It can generally be used by farmers for cooking and lighting.