A high temperature anaerobic fermentation system for kitchen waste

Abstract

The invention discloses a high-temperature anaerobic fermentation system for kitchen waste. A metering system (11) is in butt joint with a receiving hopper, the receiving hopper is in butt joint with an oil-water separator (13), the oil-water separator (13) is in butt joint with an oil treatment device (15), a solid outlet of the oil-water separator (13) is in butt joint with an inlet of a sorting and crushing device (14), the sorting and crushing device (14) is in butt joint with a large object treatment device (16) and a sand removing device (7), the sand removing device (17) is in butt joint with the large object treatment device (16) and a hydrolytic acidification tank (21), the hydrolytic acidification (21) is in butt joint with a high-temperature anaerobic fermentation tank (22), the high-temperature anaerobic fermentation tank (22) is in butt joint with inlets of a biogas slurry treatment device (31), a biogas slag treatment device and a biogas purification device (33), gas outlets of a pretreatment section (1), an anaerobic fermentation section (2) and an aftertreatment section (3) are in butt joint with an inlet of a chemical desulfurization device (41), and an outlet of the chemical desulfurization device (41) is in butt joint with an inlet of a biological desulfurization device (42). The kitchen waste treatment system has high integration level, small environmental influence, high resource utilization rate and high economic value.

Description

technical field [0001] The invention relates to a kitchen waste treatment system, in particular to a high-temperature anaerobic fermentation system for kitchen waste. Background technique [0002] Kitchen waste has the characteristics of high moisture content, high organic matter content, high oil content, and high salinity. It is easy to ferment, deteriorate, rot, breed pathogenic microorganisms, emit foul odor, generate a large amount of greenhouse gases, and cause complaints from residents. Waste is not waste but treasure, which has great resource reuse value. [0003] Traditional food waste disposal methods include sanitary landfill and incineration. The sanitary landfill method has a large processing capacity and relatively low operating costs, but it occupies a large area and has secondary pollution such as water and gas; the incineration method has a high degree of harmlessness and a small area, but it requires large investment and consumes Due to the high water con...

AI Technical Summary

Problems solved by technology

Biogas produced by anaerobic fermentation can be used for power generation, and the residue of fermentation can also be used as organic fertilizer through aerobic composting. However, there are slow hydrolysis speed, acid inhibition, ammonia nitrogen inhibition and the production of H 2 S malodorous gas and other issues

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