Garbage treatment system of irregular garbage dump

Abstract

The utility model provides a garbage disposal system of an irregular garbage dump, which comprises an in-situ garbage disposal system, an ectopic garbage disposal system and a gas collection and disposal system, the in-situ garbage disposal system can perform in-situ aeration treatment on a landfill area which is better in landfill and sufficient in anti-seepage measure, the activity of native microorganisms in the landfill area is improved, and the gas collection and disposal system is used for collecting and disposing gas in the landfill area. The garbage degradation speed of the landfill area is increased, and meanwhile the excavation cost is saved; according to the ectopic garbage treatment system, a landfill area which is shallow in landfill and poor in anti-seepage measure can be dug out and screened to be divided into light garbage mainly containing plastics, the light garbage is sent to a professional garbage treatment plant for resource utilization, and the other part mainly containing humus can be recycled after being screened and treated, so that the environment-friendly garbage treatment system is suitable for large-scale popularization and application. As an adsorbent for overflowing gas after aeration treatment, the treatment cost is saved, and unreasonable utilization of land and secondary pollution are avoided to the greatest extent.

Description

Technical Field

[0001] The utility model relates to the technical field of stock garbage treatment, in particular to a garbage treatment system for informal garbage sites. Background Art

[0002] In recent years, with the development of urban economies, the increase in population and the number of cities, the amount of domestic waste has also continued to rise. A solid waste disposal report released in December 2017 showed that the urbanization rate of the permanent population reached 58.52%. 214 major large and medium-sized cities generated 188.5 million tons of waste, of which 99.1% had been disposed of. This efficient waste disposal rate is primarily due to the focused efforts of relevant national departments and municipalities. However, while the focus is on the collection and disposal of existing waste, informal landfills appear to have become a blind spot in this area. These informal landfills lack waste sorting and contain few anti-seepage measures, leading to leachate further contaminating the surrounding soil and groundwater. Furthermore, these informal landfills are often located on the outskirts of underdeveloped towns, and this irrational land occupation hinders urban expansion and development.

[0003] The core issues facing informal landfills are the land occupation, the remediation of leachate that can easily contaminate soil and groundwater, and the disposal of the waste itself. Currently, the most straightforward approach involves on-site incineration or landfill at a new location. However, this inevitably leads to secondary environmental pollution, such as air pollution. The wholesale transfer of waste also wastes various resources, and the fundamental issue of land use remains unresolved, limiting farmland use and urban expansion. Therefore, developing new waste treatment technologies for informal landfills is crucial.

[0004] To this end, Chinese invention patent CN201610900726.X discloses a harmless and environmentally friendly treatment process for existing domestic waste, which includes the following steps: 1. reducing methane concentration; 2. excavating, sorting, and crushing; 3. rolling screening; 4. air-selecting the rolling screening oversize to obtain a first light material, a first heavy material, and a first medium material, manually sorting out the first combustible material from the first heavy material, and leaving the remainder as the first heavy residue; 5. vibrating screening the rolling screening undersize, and air-selecting the vibrating screening oversize to obtain a second light material and a second heavy material; 6. magnetically separating the iron metal from the first heavy residue and the second heavy material, and air-selecting the combustible and non-combustible materials from the remainder; 7. magnetically separating the iron metal from the first medium material, the first combustible, and the second light material, leaving a mixed combustible material; 8. crushing the mixed combustible material and the first light material into crushed combustible material; 9. combining the combustible material and the crushed combustible material to obtain regenerated combustible material; fine soil, non-combustible materials, and iron metal are stored separately. This design can achieve harmless and environmentally friendly treatment of existing domestic waste. However, the processing cost of this treatment process is too high, and the treatment process is relatively simple and lacks relevance, resulting in excessively high processing costs. Summary of the Invention

[0005] In order to solve the above problems, the utility model provides a garbage disposal system for informal landfills to solve the problems in the existing technology of excessively high garbage excavation costs in existing landfills and the lack of correlation caused by the separate single-process treatment after garbage screening, thereby avoiding the irrational use of land and secondary pollution to the greatest extent.

[0006] The utility model provides a garbage disposal system for an informal garbage dump, comprising an in-situ garbage disposal system, an ex-situ garbage disposal system and a gas collection and treatment system. The in-situ garbage disposal system is located in a deep landfill area of the informal garbage dump, and the ex-situ garbage disposal system is located in a shallow landfill area of the informal garbage dump. The gas collection and treatment system connects the in-situ garbage disposal system and the ex-situ garbage disposal system, and is used to collect the gas generated in the deep landfill area by the in-situ garbage disposal system, and react the gas with part of the garbage screened out in the shallow landfill area by the ex-situ garbage disposal system.

[0007] Part of the garbage screened out from the shallow landfill area by the off-site garbage treatment system can be used as an adsorbent for the gas generated by the in-situ garbage treatment system in the deep landfill area. Local materials are used to fully utilize existing resources in the landfill and save treatment costs.

[0008] Furthermore, the in-situ waste treatment system includes a gas generating device and a connecting pipe. The gas generating device is established near the deep landfill area. The connecting pipe is connected to the deep landfill area through several connecting branches. The gas generating device is connected to the connecting pipe through a pressurizing device.

[0009] The gas generating device may be an oxygen generating device, and the pressurizing device may be an air pump.

[0010] Furthermore, the off-site garbage disposal system includes a screening device, and the upper end of the screening device is a garbage input end.

[0011] The garbage input end at the upper end of the screening device can be in the shape of a receiving hopper, and the receiving hopper can be connected to a vibration device so that the input garbage can be evenly scattered on the screening device.

[0012] Furthermore, the screening device is provided with a 120 mm screen, a 40 mm screen and an 8 mm screen in sequence from top to bottom along the vertical direction.

[0013] The 120mm screen, the 40mm screen and the 8mm screen are arranged in parallel at equal intervals, and each screen can also be connected to a vibration device to facilitate the falling of garbage on the screen.

[0014] Furthermore, the gas collection and processing system includes a gas collection device, a gas processing device and a temperature control device. One end of the gas collection device is connected to the deep landfill area, and the other end is connected to the gas processing device. The gas processing device is also connected to a gas exhaust pipe. The temperature control device is arranged on the inner wall of the gas processing device.

[0015] The operator controls the temperature control device by remote control, and the temperature control device can also be set on the outer wall of the gas processing device to facilitate direct operation by the operator.

[0016] Furthermore, the gas processing device is arranged between the 40mm sieve and the 8mm sieve, and an openable and closable garbage inlet is provided at the upper end of the gas processing device.

[0017] A sealing ring is provided on the inner wall of the garbage delivery port to ensure that the gas treatment device has good air tightness.

[0018] Furthermore, the temperature control device adjusts the temperature in the gas processing device, and the temperature control device includes a temperature sensor, an electric heating device and a power adjustment device.

[0019] The garbage treatment system and treatment process of the informal garbage dump in the utility model can perform in-situ aeration treatment for landfill areas with good landfill and sufficient anti-seepage measures, thereby improving the activity of native microorganisms therein and increasing the degradation rate of garbage in the landfill area, while saving excavation costs; for landfill areas with shallow landfill and poor anti-seepage measures, they can be dug out and, after screening, divided into lightweight garbage mainly composed of plastics, which can be sent to professional garbage treatment plants for resource utilization; the other part mainly composed of humus can be screened and recycled, and used as an adsorbent for overflow gas after aeration treatment, thereby saving treatment costs and avoiding irrational land use and secondary pollution to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0021] Figure 1 The utility model provides a schematic diagram of the overall operation of a new process for treating garbage in an informal garbage dump.

[0022] Description of reference numerals:

[0023] 1-deep landfill area, 2-shallow landfill area, 3-screening device, 4-120mm screen, 5-40mm screen, 6-8mm screen, 7-gas generating device, 8-connecting pipeline, 9-gas collecting device, 10-gas processing device, 11-temperature control device. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the following describes in detail the specific embodiments of the present invention in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] Example 1

[0026] See attached Figure 1The utility model provides a garbage disposal system for an informal garbage dump, comprising an in-situ garbage disposal system, an ex-situ garbage disposal system, and a gas collection and treatment system. The in-situ garbage disposal system is located in a deep landfill area 1 of the informal garbage dump, and the ex-situ garbage disposal system is located in a shallow landfill area 2 of the informal garbage dump. The gas collection and treatment system connects the in-situ garbage disposal system and the ex-situ garbage disposal system, and is used to collect the gas generated in the deep landfill area 1 through the in-situ garbage disposal system, and react the gas with part of the garbage screened out in the shallow landfill area 2 through the ex-situ garbage disposal system.

[0027] Part of the garbage screened out from the shallow landfill area 2 by the off-site garbage treatment system can be used as an adsorbent for the gas generated by the in-situ garbage treatment system in the deep landfill area 1. Local materials are used to fully utilize the existing resources of the landfill and save treatment costs.

[0028] Furthermore, the in-situ garbage treatment system includes a gas generating device 7 and a connecting pipe 8. The gas generating device 7 is established near the deep landfill area 1. The connecting pipe 8 is connected to the deep landfill area 1 through several connecting branches. The gas generating device 7 is connected to the connecting pipe 8 through a pressurizing device.

[0029] The gas generating device 7 may be an oxygen generating device, and the pressurizing device may be an air pump.

[0030] Furthermore, the off-site garbage disposal system includes a screening device 3, and the upper end of the screening device 3 is a garbage input end.

[0031] The garbage input end at the upper end of the screening device 3 can be in the shape of a receiving hopper, and the receiving hopper can be connected to a vibration device so that the input garbage can be evenly scattered on the screening device 3.

[0032] Furthermore, the screening device 3 is provided with a 120 mm screen 4, a 40 mm screen 5 and an 8 mm screen 6 in sequence from top to bottom along the vertical direction.

[0033] The 120 mm screen 4, the 40 mm screen 5 and the 8 mm screen 6 are arranged in parallel at equal intervals, and each screen may be connected to a vibration device to facilitate the falling of garbage on the screen.

[0034] Furthermore, the gas collection and processing system includes a gas collection device 9, a gas processing device 10 and a temperature control device 11. One end of the gas collection device 9 is connected to the deep landfill area 1, and the other end is connected to the gas processing device 10. The gas processing device 10 is also connected to a gas exhaust pipe. The temperature control device 11 is arranged on the inner wall of the gas processing device 10.

[0035] The operator controls the temperature control device 11 by remote control, or the temperature control device 11 can be arranged on the outer wall of the gas processing device 10 so that the operator can directly operate it.

[0036] Furthermore, the gas processing device 10 is arranged between the 40 mm sieve 5 and the 8 mm sieve 6 , and an openable and closable garbage inlet is provided at the upper end of the gas processing device 10 .

[0037] A sealing ring is provided on the inner wall of the garbage inlet to ensure that the gas treatment device 10 has good air tightness.

[0038] Furthermore, the temperature control device 11 adjusts the temperature in the gas processing device 10 , and the temperature control device 11 includes a temperature sensor, an electric heating device, and a power adjustment device.

[0039] Waste disposal at informal landfills involves the following steps:

[0040] S1. Pre-processing: Based on basic landfill information, identify and classify the deep landfill area 1 and shallow landfill area 2 of the informal landfill. Excavate the garbage in the shallow landfill area 2 and transfer it to the screening device 3 using a conveyor belt.

[0041] S2. Ex situ treatment: The garbage dug out from the shallow landfill area 2 is sieved by the screening device 3 to obtain a portion larger than 120mm, a portion 120 to 40mm, a portion 40 to 8mm and a portion smaller than 8mm;

[0042] S3. In-situ treatment: Gas is generated by the gas generating device 7, passed into the connecting pipe 8, and evenly injected into the deep landfill area 1 through a plurality of connecting branches to aerate the garbage therein. Hazardous gases such as methane generated by the degradation of garbage in the deep landfill area 1 overflow from the garbage aggregates and soil layer, are collected by the gas collection device 9, and then enter the gas treatment device 10;

[0043] S4. Gas treatment: The 40-8 mm portion of the garbage in step S2 is introduced into the gas treatment device 10 through the openable and closable garbage inlet provided at the upper end of the gas treatment device 10. After the temperature is adjusted by the temperature control device 11, the gas is adsorbed with the methane and other harmful gases in step S3.

[0044] The screening device 3 is used to perform on-site screening, and each part is subjected to different resource utilization, treatment, recycling, etc., which greatly reduces the volume of off-site transportation and alleviates the pressure on the garbage plant treatment.

[0045] Furthermore, the garbage larger than 120 mm in step S2 includes plastic, paper, fiber and glass, which are collected and recycled; the garbage between 120 and 40 mm in step S2 includes kitchen organic waste and plastic waste, which are collected and sent to a professional waste treatment plant for treatment; the garbage smaller than 8 mm in step S2 includes inorganic matter, which are collected and used as backfill or overburden.

[0046] The garbage part that does not pass the 120mm sieve is smaller in proportion and cleaner, mainly composed of plastic, paper, fiber and glass, with low moisture content, low ash content, high calorific value and high resource utilization rate. It should be collected and utilized as a resource; the 120mm~40mm part has a larger total amount and complex composition, mainly kitchen organic waste and plastic waste, and should be collected and sent to a professional waste treatment plant for treatment.

[0047] Furthermore, the 40-8 mm portion of the garbage in step S2 contains native microorganisms that can degrade gases such as methane produced by aeration treatment, decomposing them into simple compounds such as carbon dioxide and water for harmless treatment; the garbage after the adsorption treatment is collected and used as backfill.

[0048] The 40mm to 8mm part of garbage has the largest total amount, complex composition, is relatively broken, has a large specific surface area, is easy to be used for adsorption, and has a high water content, large ash content, and low calorific value. This part has more native microorganisms and is most likely to generate microorganisms that promote degradation during the long-term burial of garbage. Therefore, it can be used as the main component of the gas treatment system to absorb and treat gases such as methane produced by accelerated degradation after aeration.

[0049] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0050] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0051] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A garbage disposal system for an informal garbage dump, comprising an in-situ garbage disposal system, an ex-situ garbage disposal system, and a gas collection and treatment system, wherein the in-situ garbage disposal system is located in a deep landfill area (1) of the informal garbage dump, and the ex-situ garbage disposal system is located in a shallow landfill area (2) of the informal garbage dump, characterized in that: The gas collection and treatment system is connected to the in-situ waste treatment system and the ex-situ waste treatment system, and is used to collect the gas generated by the deep landfill area (1) through the in-situ waste treatment system, and react the gas with part of the waste screened by the ex-situ waste treatment system in the shallow landfill area (2).

2. The garbage disposal system for an informal garbage dump according to claim 1, characterized in that: The in-situ garbage disposal system comprises a gas generating device (7) and a connecting pipe (8); the gas generating device (7) is established near the deep landfill area (1); the connecting pipe (8) is connected to the deep landfill area (1) through a plurality of connecting branches; and the gas generating device (7) is connected to the connecting pipe (8) through a pressurizing device.

3. The garbage disposal system for an informal garbage dump according to claim 2, characterized in that: The ectopic garbage disposal system comprises a screening device (3), the upper end of the screening device (3) being a garbage input end.

4. The garbage disposal system for an informal garbage dump according to claim 3, characterized in that: The screening device (3) is provided with a 120 mm screen (4), a 40 mm screen (5) and an 8 mm screen (6) in sequence from top to bottom along the vertical direction.

5. The garbage disposal system for an informal garbage dump according to claim 4, characterized in that: The gas collection and treatment system comprises a gas collection device (9), a gas treatment device (10) and a temperature control device (11). One end of the gas collection device (9) is connected to the deep landfill area (1), and the other end is connected to the gas treatment device (10). The gas treatment device (10) is also connected to a gas discharge pipe. The temperature control device (11) is arranged on the inner wall of the gas treatment device (10).

6. The garbage disposal system for an informal garbage dump according to claim 5, characterized in that: The gas processing device (10) is arranged between the 40 mm sieve (5) and the 8 mm sieve (6), and an openable and closable garbage inlet is provided at the upper end of the gas processing device (10).

7. The garbage disposal system for an informal garbage dump according to claim 5, characterized in that: The temperature control device (11) adjusts the temperature in the gas processing device (10), and the temperature control device (11) includes a temperature sensor, an electric heating device, and a power adjustment device.

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