Urban kitchen waste recycling utilization and harmless treatment technology

Abstract

The invention relates to an urban kitchen waste recycling utilization and harmless treatment technology. The urban kitchen waste recycling utilization and harmless treatment technology is characterized by grinding and sorting kitchen waste by a crushing sorting machine, separating out inorganic substances, carrying out high-temperature steam pyrolysis of organic matter slurry, and carrying out solid-liquid and oil-water separation, wherein separated residues and sewage are fed into a biogas fermentation tank and are subjected to anaerobic fermentation to produce biogas for power generation or civil heating; and separated waste oil undergoes an acid-base reaction to produce glycerin and biodiesel. The urban kitchen waste recycling utilization and harmless treatment technology realizes maximum recycle of active resources of kitchen waste, reduces the pollution and the damage on the environment, and has environmental, economic and social benefits.

Description

technical field [0001] The invention relates to the technical field of disposal and utilization of urban kitchen waste. Background technique [0002] As a metabolite of human life, kitchen waste is not only a kind of domestic garbage, but also a kind of resource, which has dual properties. Kitchen waste, the main components are leftovers, leftovers, vegetable juice, waste oil, etc., are human food residues, and its exact quantity is difficult to count. According to preliminary estimates in Shanghai, restaurants and canteens produce various types of kitchen waste every day There are as many as 1100 tons, which shows that the amount of urban kitchen waste is very considerable. This type of waste is special, mainly composed of oil, bone, meat, and rice. It is troublesome to dispose of and requires a lot of investment. The waste oil that appeared in the past few years has attracted the attention of the society. Contents of the invention [0003] Aiming at the above problems ...

AI Technical Summary

Problems solved by technology

Kitchen waste, the main components are leftovers, leftovers, vegetable juice, waste oil, etc., are human food residues, and its exact quantity is difficult to count. According to preliminary estimates in Shanghai, restaurants and canteens produce various types of kitchen waste every day There are as many as 1100 tons. It can be seen that the amount of urban kitchen waste is very considerable. This kind of waste is special, mainly composed of oil, bone, meat, and rice. It is troublesome to dispose of and requires a lot of investment.

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