Damp and heat fermentation comprehensive harmless and resource processing system for kitchen waste

Abstract

The invention relates to a damp and heat fermentation comprehensive harmless and resource processing system for kitchen waste, which utilizes kitchen wastes to produce bio-diesel, microbial protein feeds, liquid fertilizers / nutritive water, methane and other products and realizes the effect of eliminating the pollution caused by the kitchen wastes. The system comprises, but not limited to a kitchen waste pre-processing system, a kitchen waste damp and heat hydrolytic system, a kitchen waste solid-liquid separation system, an oil-water separation system, a kitchen waste solid residue microbial fermentation system, a diverse microbial protein feed processing system, a kitchen waste liquid resource processing system, an odor purification system and a waste storage and transportation system. The damp and heat fermentation comprehensive harmless and resource processing system for kitchen waste realizes more than 85 percent of waste oil recovery efficiency and more than 12 percent of feed conversion rate. The whole system is entirely closed and is free from secondary pollution.

Description

technical field [0001] The invention relates to the field of resourceful and harmless treatment of organic solid waste, in particular to a comprehensive food waste resourceful and harmless treatment system comprising a moist heat treatment system and a microbial fermentation system. Background technique [0002] Food waste refers to organic waste such as leftovers produced by restaurants, canteens, restaurants and other catering units. Due to the special food culture and eating habits of dinner parties, the amount of food waste produced in my country is very large, the composition is very complex, and improper treatment can easily pollute the environment and endanger human health. [0003] For food waste, traditional technologies such as incineration, landfill and composting are not ideal for treatment. High water content makes the incineration energy consumption of food waste higher; high organic matter content and high water content will cause a large increase in landfill...

AI Technical Summary

Problems solved by technology

However, this technology also has major limitations, which are mainly manifested in: ① A large amount of clean water is wasted for washing, and the high organic content in the kitchen wastewater will increase the COD and BOD of the administrative wastewater, which greatly increases the urban municipal sewage treatment. The load of water quantity and water quality treatment in the plant; ② Washing away these nutrients is also a huge waste of resources

③Because of the high oil content in kitchen waste wastewater, especially animal fat, it will condense into blocks in the drainage pipe at low temperature, which will cause blockage after a long period of time, and it is difficult to clean, which greatly reduces the drainage capacity of the city. During the flood season, There may also be oily sewage spills

The limitations of aerobic biological treatment are: ① Incomplete sterilization; ② When used to treat kitchen waste, due to the high viscosity, poor dispersion and high oil content of the waste, the waste pile is easy to be compacted, resulting in moisture and heat diffusion conditions. Deterioration, which hinders the penetration of oxygen and the contact between microorganisms and organic matter, is not conducive to the degradation of organic matter, so it is usually necessary to add fillers

③ High protein such as fish and meat will aggravate the odor problem; ④ It requires a large site and a long processing cycle

Disadvantages: high energy consumption, high technical requirements for operators

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