A method and system for in-situ resource processing of stock garbage

Abstract

The invention discloses a stock garbage in-situ resourceful treatment method and a stock garbage in-situ resourceful treatment system. The system comprises a garbage temporary storage area, a plate feeder, a first breaking device, a drum screen, an air separation device, a second breaking device, a first magnetic separation device, a tension and relaxation screen, an aerobic biological drying reactor, an organic fertilizer compressing and packing device, a second magnetic separation device, a liquid type drum screen, a dewatering device, a percolating liquid treatment system and a deodorization system; garbage in the garbage temporary storage area is transported to the plate feeder; the plate feeder is sequentially connected with the first breaking device and the drum screen; a first outlet of the drum screen is connected with the air separation device; a first outlet of the air separation device is connected with the second breaking device; a second outlet of the air separation deviceis sequentially connected with the second magnetic separation device, the liquid type drum screen and the dewatering device; an outlet of the dewatering device is connected with a first inlet of theaerobic biological drying reactor; a second outlet of the drum screen is connected with the first magnetic separation device and the tension and relaxation screen; an outlet of the tension and relaxation screen is connected with a second inlet of the aerobic biological drying reactor; an outlet of the aerobic biological drying reactor is connected with the organic fertilizer compressing and packing device; the aerobic biological drying reactor is further connected with the percolating liquid treatment system and the deodorization system; and the garbage temporary storage area is further connected with the percolating liquid treatment system. Production of secondary pollution can be completely prevented, and highly-resourceful utilization of the stock garbage can be achieved.

Description

technical field [0001] The invention relates to the technical field of stock garbage disposal, and more particularly to a method and system for in-situ resource recycling of stock waste. Background technique [0002] With the rapid development of my country's economy and society and the continuous expansion of the scale of urbanization, the amount of municipal solid waste is increasing day by day. As one of the most widely used garbage disposal methods, landfill has been widely used in my country. In the next few years, more and more landfills will enter the closing stage one after another. The problems of environmental pollution and land occupation caused by landfills and their existing garbage have hindered the green and healthy development of the city, which has aroused people's increasingly close attention. [0003] At present, the conventional technologies for domestic waste management include in-situ closure treatment, off-site transfer treatment, and off-site screen...

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Problems solved by technology

[0003] At present, the conventional technologies for domestic waste management include in-situ closure treatment, off-site transfer treatment and off-site screening treatment technology, etc. These three conventional technologies have the following problems: 1. In-situ closure treatment has a short construction period and is effective Fast, low investment and operating costs, simple operation, and the land resources can be reused after the closure treatment, but if the geological conditions of the site are complicated and the groundwater is rich, the in-situ closure treatment will cause the leachate to be in an uncontrollable state, and it is possible Pollution to groundwater; 2. Off-site transfer treatment can completely solve the pollution problem of simple landfills, and the original site can be redeveloped and utilized, but the cost of garbage transfer is high, and the process of garbage transportation may cause secondary pollution. Pollution; 3. Although the off-site screening treatment technology can better realize the recycling and reduction of waste, there are local collapses or settlements in the landfill, high transfer costs, secondary pollution caused by the transfer process, and increased load on the receiving site and other shortcomings

However, although the current existing waste disposal technology can realize the recycling and harmlessness of waste to a certain extent, the effect of resource utilization is not perfect, and it only focuses on the sorting and recycling of stock waste. The leachate and malodorous gas generated are less considered, and there is a certain degree of secondary pollution

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