The general term for waste discharged from agricultural production, processing of agricultural products, livestock and poultry breeding, and rural residents. Agricultural straw can be used to produce biogas and become agricultural organic fertilizer. It is also a rough feed and bedding material for livestock. Poultry manure and fence bedding, or chopped straw mixed with the appropriate amount of human and animal manure for high-temperature composting, after short-term fermentation, can kill a large number of pathogenic bacteria and parasites eggs in human and animal manure. The plant pests and various weed seeds hidden in the straw are then put into the biogas tank for fermentation to produce biogas. This treatment method can not only provide biogas fuel but also obtain high-quality organic fertilizer; after the manure is sealed, it can also prevent the breeding of flies. This method of treatment has been widely used in rural China and has been valued by countries all over the world.
Agricultural Waste Introduction
Agricultural waste is also called agricultural waste. According to its composition, it mainly includes plant fibrous waste and livestock manure. It is the difference between resource input and output material and energy in the chain of agricultural production and reproduction. The share of material energy lost.
It can be divided into:
- Farmland and orchard residues, such as straws, stubbles, weeds, fallen leaves, fruit shells, vines, branches and other waste;
- Livestock and poultry manure and fence bedding, etc.;
- Agricultural product processing waste;
- Human excrement and urine and domestic waste.
Harm
Large-scale livestock farms and places where large-scale poultry and livestock are raised in house-feeding methods discharge a large amount of manure and the bedding of corrals and poultry houses. If you pay attention to the combination of agriculture and animal husbandry, it can become an important source of organic fertilizer; if not Adding treatment to the environment will pollute the environment. For example, the discharge of untreated feces into rivers and lakes will make the water dirty, increase the biochemical oxygen demand (BOD) load, form anaerobic degradation or eutrophication, and threaten the survival of fish, shellfish and algae; it will also be contagious. Diseases affect the health of residents.
If the irrigation water is seriously polluted by agricultural wastes, the ammonia nitrogen and protein nitrogen content in the water will be too high, which will cause the rice to grow, lodging, late or immature; in addition, there may be excessive nitrate in the underground aquifer. , Or make the surrounding environment breed a lot of flies and other pests.
Processing and Utilization
Agricultural straw can be used to produce biogas and become agricultural organic fertilizer. It is also a rough feed and bedding material for livestock. Poultry manure and fence bedding, or chopped straw mixed with the appropriate amount of human and animal manure for high-temperature composting, after short-term fermentation, can kill a large number of pathogenic bacteria and parasites eggs in human and animal manure. The plant pests and various weed seeds hidden in the straw are then put into the biogas tank for fermentation to produce biogas.
This treatment method can not only provide biogas fuel but also obtain high-quality organic fertilizer; after the manure is sealed, it can also prevent the breeding of flies. This method of treatment has been widely used in rural China and has been valued by countries all over the world. Earthworms are rich in protein and are high-quality feeds for poultry and fish. Earthworm manure is a comprehensive organic fertilizer. Agricultural straw, poultry manure and its bedding can be used as earthworm food to promote artificial earthworm breeding.
Accrocessing of Agricultural Products
Most of the waste generated from agricultural product processing can also be used comprehensively. For example, waste from the meat processing industry can be used to produce leather products, soap, animal glue, biopharmaceuticals, down, bone meal, etc. Some residues in farmland and orchard are raw materials for the production of corrugated cardboard, soft fiberboard and paper, which can be used to make fiberboard, paper and further use lignin and cellulose to make chemical products. The use of agricultural waste has a lot to do.