What are the biomass energy resources?

Based on whether it can replace conventional fossil energy on a large scale, it is divided into traditional biomass energy and modern biomass energy. The traditional biomass energy mainly includes energy for rural life: fuel wood, straw, rice straw, rice husks, and other agricultural production wastes and animal manure; modern biomass energy is biomass energy that can be used on a large scale, including modern forestry. Production of waste, bagasse and municipal solid waste, etc.

According to the different sources, the biomass suitable for energy use can be divided into five categories: forestry resources, agricultural resources, domestic sewage and industrial organic wastewater, municipal solid waste, and animal manure.

(1) Forestry resources Forest biomass resources refer to the biomass energy provided by the forest growth and forestry production process, including firewood forest, scattered timber in the forest tending and thinning operation, residual branches, leaves and sawdust, etc.; And the processing of the branches, sawdust, sawdust, shoots, plates and truncated, etc.; waste of forestry by-products, such as shells and cores.

(2) Agricultural resources Agricultural biomass energy resources refer to agricultural crops (including energy plants); wastes from agricultural production processes, such as crop stalks (corn stalks, sorghum stalks, wheat straw, rice straw, etc.) that remain in farmland when crops are harvested. Soybean straw, cotton stalks, etc.); waste from the agricultural processing industry, such as rice husks remaining during agricultural production. Energy plants generally refer to various types of plants that are used to provide energy, and generally include herbaceous energy crops, oil crops, and the production of hydrocarbon plants and aquatic plants.

(3) Domestic Sewage and Industrial Organic Wastewater Domestic sewage is mainly composed of all kinds of drainage from the living, commercial and service industries of urban residents, such as cooling water, bath drainage, toilet drainage, laundry drainage, kitchen drainage, and fecal sewage. Industrial organic wastewater is mainly wastewater discharged from the production process of alcohol, brewing, sugar, food, pharmaceuticals, papermaking and slaughtering industries, all of which are rich in organic matter.

(4) Municipal Solid Waste Urban solid waste is mainly composed of solid waste such as urban residents' living garbage, commercial and service industry garbage, and a small amount of construction industry garbage. Its composition is relatively complex and affected by the average living standards of local residents, energy consumption structure, urban construction, natural conditions, traditional habits, and seasonal changes.

(5) Livestock and poultry manure Livestock and poultry manure is the general term for livestock and poultry excrement. It is a form of transformation of other forms of biomass (mainly foodstuffs, crop stalks, pastures, etc.), including feces, urine, and mats discharged from livestock and poultry. Mixture of grass. The main livestock and poultry in China include chickens, pigs and cattle, and their resources are related to animal husbandry production. According to the factors such as the breed, body weight, and fecal excretion of these livestock and poultry, it can be estimated that the amount of physical resources available for livestock and poultry excrement throughout the country in 2000 was 320 million tons of dry matter.