Method for treating urban garbage

Abstract

The invention belongs to the field of treatment of solid waste, in particular to a method for treating urban garbage. The method comprises the following steps: charging urban garbage into a sorting machine to carry out proportion wind separation and magnetic separation and dividing the urban garbage into ironware, such as a reinforcing steel bar, and the like, waste plastics, organic garbage and an inorganic matter; delivering the inorganic matter into a screening machine to screen and screening inorganic matters, such as sandy soil, masonry, and the like, wherein the inorganic matters, such as masonry, and the like are made into a building material product by pulverization; washing the waste plastics and then preparing a plastic raw material by an extruder; delivering the organic garbageinto a fermenting tank to naturally ferment for several days and then carrying out disinfection and drying treatment; then pulverizing and directly granulating to prepare organic fertilizer; charginga gas generated in the processes of fermentation and drying into a cooling tower to cool and then packaging into a tank to prepare gas fertilizer. The invention reduces the labor intensity of manpower, is clean and sanitary and has good sorting effect, high utilization ratio of the sorted garbage and no residue; the organic garbage is naturally fermented with low cost; the generated waste gas is made into the gas fertilizer, thereby preventing secondary pollution.

Description

technical field [0001] The invention belongs to the field of solid waste treatment, in particular to an urban garbage treatment method. Background technique [0002] The current urban waste treatment methods are mainly based on landfill and recycling. Among them, landfill will occupy a large area, waste land resources, and will also fill up many renewable resources, which will easily cause groundwater and air pollution. Form secondary pollution or cause explosion accidents. The patent No. is: 03112645.6, and the patent name is: the Chinese patent of municipal solid waste treatment process discloses a kind of rubbish through fermenting and sorting and then through drying, and then after incineration, flue gas is processed, because there are some iron and Inorganic waste such as plastic products is also sorted and incinerated after fermentation treatment like other organic waste, which is not conducive to the recycling of inorganic waste, and the proportion of inorganic waste...

AI Technical Summary

Problems solved by technology

[0002] The current urban waste treatment methods are mainly based on landfill and recycling. Among them, landfill will occupy a large area, waste land resources, and will also fill up many renewable resources, which will easily cause groundwater and air pollution. Form secondary pollution or cause explosion accidents

The patent No. is: 03112645.6, and the patent name is: the Chinese patent of municipal solid waste treatment process discloses a kind of rubbish through fermenting and sorting and then through drying, and then after incineration, flue gas is processed, because there are some iron and Inorganic waste such as plastic products is also sorted and incinerated after fermentation treatment like other organic waste, which is not conducive to the recycling of inorganic waste, and the proportion of inorganic waste such as building materials in cities is also very large. A separate treatment method; although there is incineration flue gas treatment after incineration, although this method curbs the generation of dioxins, it must be sent to the second combustion chamber for high-temperature combustion and deacidification and dust removal in the process of treating flue gas and other processes, the process is complicated, which increases the cost of waste disposal

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