Method for comprehensive treatment of kitchen waste

Abstract

The invention relates to the technical field of environmental-protection engineering, in particular relates to a method for comprehensive treatment of kitchen waste, and is characterized in that the processing steps comprise kitchen waste pretreatment and insect abdominal conversion. The kitchen waste pretreatment process comprises automatic sorting, oil-water separation, biological fermentation, drying, steam condensation and ionization deodorization. The kitchen waste is subjected to automatic sorting, oil-water separation, biological fermentation, drying, steam condensation and ionization deodorization by devices to obtain a granular pretreated material, and the granular pretreated material is used for feeding insects and is completely converted by the insects to obtain insect frass and an insect product. Because of adopting of the method, the method has complete technology, is environmentally friendly and has no pollution during the treatment process, allows the treated material to accord with national relevant ecological standards, and has the advantages of harmless treatment, resource utilization, environmental protection, no pollution and the like.

Description

technical field [0001] The invention relates to the technical field of environmental protection engineering, in particular to a comprehensive treatment method for kitchen waste. Background technique [0002] At present, kitchen waste accounts for about 40% to 50% of the total urban domestic organic waste. If it is stored for a long time, it will breed germs, mosquitoes, and cockroaches, which will affect the health of residents and the home environment. difficulty. At present, the main treatment methods of urban kitchen waste are sanitary landfill and incineration, and a small part is treated by composting. Sanitary landfill has the largest treatment capacity, relatively low operating costs, relatively simple process, and low investment. It is the other treatment method. The final digestion method of residues, but the treatment address of this method is limited, it occupies a lot of land, the service life is limited, the management requirements are high, and the water and ...

AI Technical Summary

Problems solved by technology

[0002]At present, kitchen waste accounts for about 40% to 50% of the total urban domestic organic waste, and if it is stored for a long time, it will breed germs, mosquitoes, and cockroaches, affecting Residents' health and home environment, kitchen waste is a difficult point in municipal solid waste disposal

At present, the main treatment methods of urban kitchen waste are sanitary landfill and incineration, and a small part is treated by composting. Sanitary landfill has the largest treatment capacity, relatively low operating costs, relatively simple process, and low investment. It is the other treatment method. The final digestion method of residues, but the treatment address of this method is limited, it occupies a lot of land, the service life is limited, the management requirements are high, and the water and air pollution cannot be completely solved; the reduction degree of the incineration method is high, and the calorific value of the garbage can be used , the ground has a high degree of harmlessness, a small footprint, and a large capacity reduction, which can reach 70-80%. However, this method requires large investment, high operating costs, high water content in food waste, and low calorific value, which easily leads to difficulties in incineration. , the economy is extremely poor, the tail gas treatment is difficult, and it is easy to form secondary pollution; the composting method has obvious effects of weight reduction and volume reduction, and has good adaptability to food waste with high water content, which is conducive to the harmlessness of waste. However, due to the large amount of salt in the food waste, the soil becomes saline-alkali land, which is not conducive to the growth of crops.

[0003] After searching, CN published an invention patent on a method and material formula of using black soldier fly larvae to treat kitchen waste. After crushing, add dressing to obtain the black soldier fly larva culture material, insert black soldier fly eggs on the surface of the black soldier

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