Treatment system for garbage anaerobic and aerobic composting and wastewater purification

Abstract

The invention discloses a treatment system for garbage anaerobic and aerobic composting and wastewater purification. The treatment system comprises a feeding tank for containing garbage, an extrudingmachine, an anaerobic fermentation tower, a biogas slurry concentration evaporator, a plurality of aerobic composting towers and a biological deodorization tower. The extruding machine is used for extruding the garbage, and the anaerobic fermentation tower is connected with the extruding machine through a first pipeline to receive slurry discharged by the extruding machine; the biogas slurry in the middle of the anaerobic fermentation tower is conveyed to the biogas slurry concentration evaporator through a second pipeline, the evaporation concentrated liquid discharged from the biogas slurryconcentration evaporator is conveyed to the aerobic composting tower through a third pipeline, and non-condensable gas discharged by the biogas slurry concentration evaporator and aerobic composting waste gas discharged by the aerobic composting tower are conveyed to the biological deodorization tower through a waste gas main pipe. The treatment system is used for treating the garbage high in water content and can realize harmless treatment, recycling and reduction of the garbage, and the treatment cost is low.

Description

technical field [0001] The invention relates to the technical field of waste water treatment, in particular to a treatment system for garbage anaerobic, aerobic composting and waste water purification. Background technique [0002] Traditional food waste treatment methods mainly include incineration, landfill, composting, and making feed. [0003] Due to the complex composition and high water content of food waste, it will be incinerated, the treatment cost is high, the operation is unstable, and secondary pollution is likely to occur. [0004] The landfill requires that the moisture content of incoming garbage is below 60%, and that of food waste is about 85%, so direct landfilling of food waste is almost unfeasible. [0005] There are potential safety hazards such as mad cow disease if food waste is directly used as feed for pigs and cattle. [0006] Direct anaerobic and aerobic composting of kitchen waste is easy to breed flies and mosquitoes, and the environmental sani...

AI Technical Summary

Problems solved by technology

[0005] There are potential safety hazards such as mad cow disease when food waste is directly used as feed for pigs and cattle

[0006] Direct anaerobic and aerobic composting of kitchen waste is easy to breed flies and mosquitoes, and the environmental sanitation conditions are poor; the content of organic matter is high, and the ripening is not complete, and it is easy to burn roots and seedlings when applying organic fertilizers

Moreover, the moisture content of food waste is high. If the moisture content is degraded by adding straw and wood chips, etc., it does not meet the principle of waste reduction.

If the wastewater is directly biochemically and advancedly treated, due to the high concentration of COD, ammonia nitrogen, total phosphorus, high salt content and high oil content in the wastewater, it is extremely difficult and costly to meet the discharge standards.

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