Domestic waste landfill odor treatment device

Abstract

The utility model relates to an odor treatment device for a household garbage landfill, which relates to the technical field of garbage landfill and comprises a biological filter box, an air outlet pipe is wound in the biological filter box, a filler layer is laid above the air outlet pipe, and main odor components in landfill odor are decomposed by microorganisms in the biological filter box, so that the main odor components in the landfill odor are decomposed by the microorganisms in the biological filter box. Nozzles are arranged above the filler layer at intervals, and a medium is circulated through a circulating pipeline and sprayed on the filler layer, so that survival conditions required by microorganisms are maintained, and a reaction medium is provided; an inclined collecting tank is arranged at the bottom of the biological filter box, the spray head and the collecting tank are externally connected with a circulating pipeline, the circulating pipeline is communicated with a liquid storage box, and a filling port for filling replenishing liquid is formed in the top of the liquid storage box; a gas collecting pipe is arranged at the top of the biological filter box and connected with a purification channel, the purification channel is filled with activated carbon and doped with a deoxidizing agent, gas which does not meet the ignition or collection standard flows back through a backflow pipe, the treatment effect is improved, and safety accidents are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of garbage landfill, in particular to an odor treatment device for a domestic garbage landfill. Background Art

[0002] Domestic waste is often disposed of by landfill. During the landfill process, the piled-up domestic waste will emit a foul odor, which is unbearable for the workers at the landfill. In the long run, it will cause harm to the body and also pollute the surrounding environment.

[0003] At present, biological deodorization equipment is mainly used to treat landfill odor. Microorganisms attached to the filler layer decompose the malodorous components in the landfill odor, but the living conditions of the microorganisms are poor, which affects the work efficiency. At the same time, the malodorous components in the odor are not completely treated, and the mixing of methane and oxygen during the transportation process is also prone to safety accidents. Utility Model Content

[0004] In order to improve the problems in the above-mentioned background technology, the utility model provides an odor treatment device for a domestic waste landfill.

[0005] The utility model provides a domestic waste landfill odor treatment device adopts the following technical solution:

[0006] A device for treating odor in a domestic waste landfill comprises a biological filter box, an air outlet pipe is coiled inside the biological filter box, a packing layer is laid above the air outlet pipe, nozzles are arranged at intervals above the packing layer, an inclined collecting trough is arranged at the bottom of the biological filter box, the nozzles and the collecting trough are both externally connected to a circulation pipeline, and an air collecting pipe is arranged on the top of the biological filter box, the air collecting pipe is connected to a purification channel and refluxes through a reflux pipe.

[0007] Preferably, the purification channel is filled with activated carbon and doped with a deoxidizer, a gas detector is provided behind the activated carbon, the end of the purification channel is externally connected to a reflux pipe and the reflux pipe is connected to an outlet pipe, and the reflux pipe is controlled by a three-way valve.

[0008] Preferably, the circulation pipeline is connected to a liquid storage tank, a heat exchange tube is passed through the interior of the liquid storage tank and a detector for detecting temperature and pH value is provided, a filling port for injecting supplementary liquid is provided on the top of the liquid storage tank, the output end of the liquid storage tank is connected to a nozzle through a circulation pipeline, and the input end of the liquid storage tank is connected to a filter tank and connected to a collection tank through a circulation pipeline.

[0009] Preferably, the supplementary solution is NaOH alkaline solution and nutrient salt solution.

[0010] Preferably, the air outlet pipe is arranged in an S-shape and coiled, and air outlet holes are evenly distributed on the air outlet pipe.

[0011] Preferably, the filler layer is made of multiple layers of sponge or stacked hollow balls, and a cloth layer is laid on the top of the filler layer.

[0012] In summary, the utility model has the following beneficial technical effects: the utility model decomposes the main malodorous components in the landfill odor through the microorganisms in the biological filter box, and the medium circulates through the circulation pipeline and is sprayed on the filler layer, so as to maintain the living conditions required by the microorganisms and provide the reaction medium, and deodorize efficiently; by setting up a purification channel, the landfill gas is purified for the second time, and the gas that does not meet the ignition or collection standards is refluxed through the reflux pipe, which improves the treatment effect of the domestic waste landfill odor and reduces the occurrence of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a partial structural schematic diagram of a domestic waste landfill odor treatment device according to an embodiment of the utility model;

[0014] Figure 2 It is a partial structural schematic diagram of the purification channel of an embodiment of the utility model;

[0015] Figure 3 It is a partial structural schematic diagram of the circulation pipeline of the embodiment of the utility model;

[0016] Figure 4 It is a partial structural schematic diagram of the air outlet pipe of an embodiment of the utility model.

[0017] Explanation of the reference numerals: 1. biological filter box; 2. outlet pipe; 3. packing layer; 4. nozzle; 5. collecting tank; 6. circulation pipeline; 7. gas collecting pipe; 8. purification channel; 9. reflux pipe; 10. activated carbon; 11. deoxidizer; 12. gas detector; 13. three-way valve; 14. liquid storage tank; 15. heat exchange tube; 16. detector; 17. replenishing liquid; 18. injection port; 19. outlet hole; 20. cloth layer; 21. filter tank. DETAILED DESCRIPTION

[0018] The following combination Figure 1-Figure 4 The utility model is described in further detail.

[0019] Reference Figure 1 , Figure 2 The utility model embodiment discloses an odor treatment device for a domestic waste landfill, including a biological filter box 1, an air outlet pipe 2 is coiled inside the biological filter box 1, a packing layer 3 is laid above the air outlet pipe 2, nozzles 4 are arranged at intervals above the packing layer 3, an inclined collecting tank 5 is arranged at the bottom of the biological filter box 1, the nozzle 4 and the collecting tank 5 are both externally connected to a circulation pipeline 6, and an air collecting pipe 7 is arranged on the top of the biological filter box 1, and the air collecting pipe 7 is connected to a purification channel 8 and refluxes through a reflux pipe 9.

[0020] Trained microorganisms are cultured in the packing layer 3 and attached to the surface of the packing layer 3 to form a microbial film, which utilizes the oxidative metabolism of the microorganisms to decompose the malodorous components in the landfill odor.

[0021] Reference Figure 2 The purification channel 8 is filled with activated carbon 10 and doped with a deoxidizer 11. A gas detector 12 is arranged behind the activated carbon 10. The gas detector 12 mainly detects the content of methane, oxygen and sulfide. The end of the purification channel 8 is externally connected to a reflux pipe 9, and the reflux pipe 9 is connected to the outlet pipe 2. The reflux pipe 9 is controlled by a three-way valve 13. The gas that does not meet the ignition or collection standards flows back to the outlet pipe 2 through the reflux pipe 9 and is re-processed.

[0022] Landfill gas contains methane and oxygen. When the methane and oxygen content reaches a certain limit, an explosion may occur. The deoxidizer 11 absorbs the oxygen mixed in the landfill gas, which reduces the occurrence of safety accidents and increases operational safety.

[0023] Reference Figure 1 , Figure 3 The circulation pipeline 6 is connected to the liquid storage tank 14, a heat exchange tube 15 is passed through the liquid storage tank 14 and a detector 16 for detecting temperature and pH value is provided. A filling port 18 for filling a supplementary liquid 17 is provided on the top of the liquid storage tank 14, and a valve is provided at the position of the filling port 18; the output end of the liquid storage tank 14 is connected to the nozzle 4 through the circulation pipeline 6, and the input end of the liquid storage tank 14 is connected to the filter tank 21 and connected to the collection tank 5 through the circulation pipeline 6.

[0024] The main medium in the liquid storage tank 14 is circulating water. Circulating water is one of the living conditions of microorganisms and is also the medium for microorganisms to decompose landfill odor. As the oxidative metabolism of microorganisms proceeds, the metabolites of microorganisms and the peeled microbial membranes are collected with the water and separated in the filter tank 21.

[0025] Reference Figure 3 , the supplementary solution 17 is a NaOH alkaline solution and a nutrient salt solution.

[0026] During the circulation process, the medium in the liquid storage tank 14 absorbs a small amount of hydrogen sulfide gas and nitrogen oxides dissolved in the circulating water, and the pH value is acidic. As the number of cycles increases, the acidity becomes stronger. Therefore, adding NaOH alkaline solution can maintain a suitable growth environment for microorganisms. The nutrient solution provides the microorganisms with what they need for initial survival. The acid-base neutralization reaction releases heat. A heat exchange tube 15 is installed inside the liquid storage tank 14 for heat exchange, and the temperature and pH value are detected by a detector 16.

[0027] Reference Figure 4The outlet pipe 2 is coiled in an S shape, and outlet holes 19 are evenly distributed on the outlet pipe 2. The coiled outlet pipe 2 cooperates with the evenly distributed outlet holes 19 to increase the contact range between the outlet pipe 2 and the filler layer 3, ensuring that the landfill gas is discharged more evenly and the odorous substances can be fully decomposed by microorganisms.

[0028] Reference Figure 1 The packing layer 3 uses multiple layers of sponges or stacked hollow balls to ensure that the porosity is above 30%, so that the microorganisms have sufficient growth and metabolic conditions. A cloth layer 20 is laid on the top of the packing layer 3 so that the medium in the circulation pipeline 6 can fully and evenly infiltrate the packing layer 3.

[0029] The implementation principle of the odor treatment device for a domestic waste landfill in the embodiment of the utility model is as follows: nutrient solution is added to the liquid storage tank 14 and mixed with a water medium and sprayed on the packing layer 3, the microorganisms in the packing layer 3 grow and multiply to form a microbial film, the water medium overflowing after infiltrating the packing layer 3 is collected by the collecting tank 5 and circulated in the circulation pipeline 6, and the corresponding supplementary liquid 17 is added to the liquid storage tank 14 of the circulation pipeline 6; after the landfill odor of the domestic waste landfill is collected, it is transported to the biological filter box 1 through the outlet pipe 2, the microorganisms oxidize and metabolize and decompose the hydrogen sulfide gas in the landfill odor, the purification channel 8 purifies the landfill odor for a second time, and the gas that does not meet the ignition or collection standards is refluxed through the reflux pipe 9, so as to realize the treatment of the domestic waste landfill odor.

[0030] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A domestic waste landfill odor treatment device, characterized in that: The invention comprises a biological filter box (1), wherein an air outlet pipe (2) is coiled inside the biological filter box (1), a packing layer (3) is laid above the air outlet pipe (2), nozzles (4) are arranged at intervals above the packing layer (3), an inclined collection tank (5) is arranged at the bottom of the biological filter box (1), the nozzles (4) and the collection tank (5) are both externally connected to a circulation pipeline (6), and an air collecting pipe (7) is arranged at the top of the biological filter box (1), and the air collecting pipe (7) is connected to a purification channel (8) and refluxes through a reflux pipe (9).

2. The odor treatment device for a domestic waste landfill according to claim 1, characterized in that: The purification channel (8) is filled with activated carbon (10) and doped with a deoxidizer (11), and a gas detector (12) is arranged behind the activated carbon (10). The end of the purification channel (8) is externally connected to a reflux pipe (9), and the reflux pipe (9) is connected to the gas outlet pipe (2). The reflux pipe (9) is controlled by a three-way valve (13).

3. The odor treatment device for a domestic waste landfill according to claim 1 is characterized by: The circulation pipeline (6) is connected to a liquid storage tank (14), a heat exchange tube (15) is provided inside the liquid storage tank (14) and a detector (16) for detecting temperature and pH value is provided. A filling port (18) for injecting a supplementary liquid (17) is provided at the top of the liquid storage tank (14). The output end of the liquid storage tank (14) is connected to a nozzle (4) through the circulation pipeline (6), and the input end of the liquid storage tank (14) is connected to a filter tank (21) and is connected to a collection tank (5) through the circulation pipeline (6).

4. The odor treatment device for a domestic waste landfill according to claim 3 is characterized by: The supplementary solution (17) is a NaOH alkaline solution and a nutrient salt solution.

5. The odor treatment device for a domestic waste landfill according to claim 1, characterized in that: The air outlet pipe (2) is arranged in an S-shaped coil, and air outlet holes (19) are evenly distributed on the air outlet pipe (2).

6. The odor treatment device for a domestic waste landfill according to claim 1, characterized in that: The packing layer (3) is made of multiple layers of sponge or stacked hollow balls, and a cloth layer (20) is laid on the top of the packing layer (3).

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