Refuse landfill filtrate backflow system

Abstract

The utility model discloses a filtrate backflow system for a refuse landfill, relates to the field of refuse landfill, and solves the problems that in the prior art, when leachate on the lower layer of the refuse landfill is pumped to the upper layer of the refuse landfill and the cyclic utilization of the leachate is realized, as the height of the refuse landfill is relatively high, the requirement on the lift of a pump is relatively high when the leachate is pumped, and the cost is relatively high. And the working difficulty is high. According to the utility model, the reflux pump extracts the percolate in the percolate pool through the liquid extraction pipe and the liquid collection pipe in sequence and extracts the percolate into the booster tank, when the percolate enters the booster tank, the percolate can occupy the meteorological space in the booster tank and improve the internal pressure of the booster tank, and meanwhile, the air compressor conveys compressed gas into the booster tank, so that the internal pressure of the booster tank is further improved, and the percolate is recycled. According to the invention, the power required by the upward flowing of the leachate can be supplemented through the pressure stored in the booster tank, the high lift of a water pump is not required, and the leachate in the booster tank can be supplied to the top of a garbage mountain through smaller power consumption, so that the circulation of the leachate is realized.

Description

Technical Field

[0001] The utility model relates to the field of landfill, in particular to a landfill leachate reflux system. Background Art

[0002] The currently widely used waste treatment method is sanitary landfill, which uses microorganisms to ferment waste. In actual work, it is found that the waste heap is easily affected by seasons in the natural state. In high-temperature seasons such as summer, the moisture on the upper layer of the waste will, on the one hand, seep downward naturally due to the action of gravity, and on the other hand, evaporate due to high temperature, resulting in water shortage in the upper layer of the waste, low internal humidity in the upper waste layer, and slow or even non-fermentation of waste fermentation treatment. In low-temperature seasons such as winter, the overall temperature of the landfill decreases, the microorganisms are not active enough, and the waste fermentation treatment speed is slow.

[0003] Therefore, it is necessary to pump the leachate at the lower layer of the landfill to the upper layer to realize the recycling of the leachate, so as to improve the utilization rate of microorganisms and water, increase the production of biogas, and at the same time reduce the discharge of waste liquid.

[0004] However, the height of a general landfill is relatively high. When pumping the leachate, a higher head is required for the pump, resulting in greater working difficulty. Content of the Utility Model

[0005] The purpose of the utility model is to provide a landfill leachate reflux system, which is used to solve the problem that when the leachate at the lower layer of the landfill is pumped to the upper layer to realize the recycling of the leachate in the prior art, due to the relatively high height of the landfill, a higher head is required for the pump when pumping the leachate, resulting in greater working difficulty.

[0006] The technical scheme adopted by the utility model is as follows: a landfill leachate reflux system includes a waste mountain. A leachate pool for accommodating leachate is arranged on the side of the waste mountain. The waste mountain is communicated with the leachate pool through a pipeline. The inlet of the reflux pump is communicated with the leachate pool through a pipeline. The outlet of the reflux pump is communicated with the inner cavity of a pressure increasing tank through a pipeline. The pressure increasing tank is communicated to the top of the waste mountain through a reflux pipe. The pressure increasing tank is also communicated with the air outlet of an air compressor through a pipeline;

[0007] The pressure increasing tank is arranged at the middle position of the waste mountain.

[0008] Further, an anti-corrosion layer is arranged inside the pressure increasing tank.

[0009] Further, the end of the reflux pipe is communicated with a liquid dispersing pipe.

[0010] Further, the liquid dispersing pipe is in a radial shape.

[0011] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0012] 1. In the present utility model, the reflux pump extracts the leachate in the leachate tank through a pipeline and pumps the leachate into the pressurizing tank. When the leachate enters the pressurizing tank, it will occupy the gas space in the pressurizing tank, increasing its internal pressure. At the same time, the air compressor conveys compressed gas into the pressurizing tank, further increasing its internal pressure. The pressure stored in the pressurizing tank can be used to supplement the power required for the upward flow of the leachate, without the need for the water pump to have a very high lift. The leachate in the pressurizing tank can be supplied to the top of the garbage mountain with relatively small power consumption, thus realizing the circulation of the leachate;

[0013] 2. An anti-corrosion layer is provided inside the pressurizing tank of the present utility model to prevent the leachate from corroding its tank body and extend its service life. At the same time, the end of the reflux pipe is connected to a liquid dispersing pipe, which is radially arranged to ensure that the leachate is effectively covered from all positions and prevent the leachate from accumulating in certain areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model.

[0015] Description of the reference numerals:

[0016] 1. Garbage mountain; 2. Leachate tank; 3. Liquid dispersing pipe; 4. Reflux pump; 5. Air compressor; 6. Pressurizing tank; 7. Reflux pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] Embodiment 1

[0020] Figure 1As shown in the figure: A landfill leachate reflux system includes a waste mountain 1. On the side of the waste mountain 1, there is a leachate pond 2 for accommodating leachate. The waste mountain 1 is connected to the leachate pond 2 through a pipeline. The inlet of the reflux pump 4 is connected to the leachate pond 2 through a pipeline. The outlet of the reflux pump 4 is connected to the inner cavity of a pressure boosting tank 6 through a pipeline. The pressure boosting tank 6 is connected to the top of the waste mountain 1 through a reflux pipe 7. The pressure boosting tank 6 is also connected to the outlet of an air compressor 5 through a pipeline;

[0021] The pressure boosting tank 6 is arranged at the middle position of the waste mountain 1.

[0022] The leachate generated in the waste mountain 1 converges into the leachate pond 2 on its side through a pipeline. The reflux pump 4 extracts the leachate in the leachate pond 2 through a pipeline and pumps the leachate into the pressure boosting tank 6. When the leachate enters the pressure boosting tank 6, it will occupy the gas space in the pressure boosting tank 6, increasing its internal pressure. At the same time, the air compressor 5 conveys compressed gas into the pressure boosting tank 6 to further increase its internal pressure. The power required for the leachate to flow upward can be supplemented by the pressure stored in the pressure boosting tank 6, without the need for the water pump to have a very high lift. The leachate in the pressure boosting tank 6 can be supplied to the top of the waste mountain 1 with relatively small power consumption, thus realizing the circulation of the leachate.

[0023] Among them, an anti-corrosion layer is provided inside the pressure boosting tank 6 to prevent the leachate from corroding its box body and improve its service life. At the same time, the end of the reflux pipe 7 is connected to a liquid dispersing pipe 3. The liquid dispersing pipe 3 is in a radial shape to ensure that the leachate is effectively covered from all positions and prevent the leachate from accumulating in some areas.

[0024] Obviously, the above-mentioned embodiments of the present invention are only examples for clearly explaining the present invention, and are not limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments, and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A landfill leachate reflux system, characterized in that It includes a garbage mountain (1), and a leachate pool (2) for accommodating leachate is arranged on the side of the garbage mountain (1). The garbage mountain (1) is communicated with the leachate pool (2) through a pipeline. The liquid inlet of a reflux pump (4) is communicated with the leachate pool (2) through a pipeline, and the liquid outlet of the reflux pump (4) is communicated with the inner cavity of a pressure boosting tank (6) through a pipeline. The pressure boosting tank (6) is communicated to the top of the garbage mountain (1) through a reflux pipe (7), and the pressure boosting tank (6) is also communicated with the air outlet of an air compressor (5) through a pipeline; The pressure boosting tank (6) is arranged at the middle position of the garbage mountain (1).

2. The leachate reflux system for a landfill according to claim 1, wherein: An anti-corrosion layer is arranged inside the pressure boosting tank (6).

3. A landfill leachate reflux system according to claim 1, characterized in that: A liquid dispersion pipe (3) is communicated at the end of the reflux pipe (7).

4. A landfill leachate reflux system according to claim 3, characterized in that: The liquid dispersion pipe (3) is in a radial shape.

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