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A technology of kitchen waste and anaerobic digestion, applied in biochemical equipment and methods, chemical instruments and methods, waste fuels, etc., can solve the problems of heavy metals in fertilizers, poor system stability, and low biogas conversion rate
Active Publication Date: 2016-05-25
SHANGHAI ONEDEAR ENVIRONMENT TECH
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[0006] The existing methods and equipment for anaerobic digestion of kitchen waste generally use single-phase or two-phase anaerobic digestion, that is, both medium-temperature anaerobic digestion (30-40°C) or high-temperature anaerobic digestion (50-60°C) , or it needs to be mixed with sludge for joint treatment, resulting in problems such as small amount of kitc
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Embodiment 1
[0062] see figure 2 , the present invention discloses a high-temperature combined anaerobic digestion equipment for kitchen waste. The equipment includes: feeder 1, drum coarse grid 4, crusher 5, extruder 6, receiving pool 8, Cyclone desander 9, feed buffer tank 11, medium temperature anaerobic fermentation tank 12, high temperature anaerobic fermentation tank 13, centrifugal dehydrator 14, sewage purification system 17, vacuum dryer 16, biogas boiler 15.
[0063] The feeder 1, the drum coarse grid 4, the crusher 5, the extruder 6, the receiving tank 8, the cyclone desander 9, the feeding buffer tank 11, the medium temperature anaerobic fermentation tank 12, the high temperature anaerobic Oxygen fermenter 13, centrifugal dehydrator 14, and sewage purification system 17 are connected sequentially, medium-temperature anaerobic fermenter 12, high-temperature anaerobic fermenter 13 are respectively connected to biogas boiler 15, centrifugal dehydrator 14 is connected to vacuum dr...
Embodiment 2
[0080] A high-temperature combined anaerobic digestion equipment for kitchen waste, the equipment includes: a feeder, a drum coarse grid, a crusher, an extruder, a receiving tank, a cyclone desander, and a feeding buffer tank , Medium temperature anaerobic fermentation tank, high temperature anaerobic fermentation tank, centrifugal dehydrator, sewage purification system, vacuum dryer, biogas boiler.
[0081] The feeder, drum coarse grid, crusher, extruder, receiving tank, cyclone desander, feeding buffer tank, medium temperature anaerobic fermentation tank, high temperature anaerobic fermentation tank, centrifugal dehydrator, The sewage purification system is connected in sequence, the medium temperature anaerobic fermentation tank and the high temperature anaerobic fermentation tank are respectively connected to the biogas boiler, the centrifugal dehydrator is connected to the vacuum dryer, and the vacuum dryer is connected to the biogas boiler; the sewage purification system ...
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Abstract
The invention discloses kitchen waste medium-high-temperature combined anaerobic digestion equipment and anaerobic digestion method. The equipment comprises a feeder, a drum coarse screen, a grinder, an extruder, a collection pool, a cyclone desander, a feeding buffer pool, a medium-temperature anaerobic fermentation tank, a high-temperature anaerobic fermentation tank, a centrifugal dehydrator, a sewage purification system, a vacuum drier and a biogas boiler, wherein the feeder, the drum coarse screen, the grinder, the extruder, the collection pool, the cyclone desander, the feeding buffer pool, the medium-temperature anaerobic fermentation tank, the high-temperature anaerobic fermentation tank, the centrifugal dehydrator and the sewage purification system are connected in sequence; the medium-temperature anaerobic fermentation tank and the high-temperature anaerobic fermentation tank are respectively connected with the biogas boiler; the contrifugal dehydrator is connected with the vacuum drier; the vacuum drier is connected with the biogas boiler; and the sewage purification system is connected with the collection pool. According to the kitchen waste medium-high-temperature combined anaerobic digestion equipment and anaerobic digestion method, the biogas yield can be improved, the system operation stability can be improved, and resource utilization is easy.
Description
technical field [0001] The invention belongs to the technical field of kitchen waste treatment, and relates to a kitchen waste treatment equipment, in particular to a high-temperature combined anaerobic digestion equipment for kitchen waste; at the same time, the invention also relates to the above-mentioned anaerobic digestion equipment anaerobic digestion method. Background technique [0002] Kitchen waste is the main source of organic phase in municipal solid waste, and it is generally produced in enterprises, institutions, schools, farmers' markets, supermarkets, and catering service industries. Taking Beijing, Shanghai, Guangzhou and other big cities as examples, the daily output of kitchen waste exceeds 1,000 tons. Food waste is mainly composed of organic substances such as starch, dietary fiber, and animal fat, and has the characteristics of high moisture, high fat, high salt, perishable odor, and easy biodegradation. In addition to being used to raise pigs, most of...
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