CN212986774U

CN212986774U - Landfill leachate and landfill gas collecting system

Info

Publication number: CN212986774U
Application number: CN202021815776.6U
Authority: CN
Inventors: 胡伟儒; 潘炳新; 周菲; 何依文
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-04-16
Anticipated expiration: 2030-08-26

Abstract

The utility model relates to the field of garbage disposal, in particular to a landfill leachate and landfill gas collecting system, which comprises a first air duct, a second air duct and a water guide pipe, wherein the first air duct is arranged in an inclined angle relative to the horizontal direction, the second air duct is arranged between the first air duct and the water guide pipe, the first air duct, the second air duct and the water guide pipe are mutually communicated, the second air duct is arranged along the vertical direction, a water seal part is arranged in the water guide pipe, the first air duct of the utility model is arranged in an inclined angle, the end head is high, the outlet is low, the leachate in the landfill garbage pile can flow out of the garbage pile body through the gradient, the leachate in the landfill leachate enters the water guide pipe, is treated after overflowing through the water seal part arranged on the water guide pipe, and the liquid in the collecting pipe is discharged through the water seal overflow, the electric and automatic control timing pumping drainage is not needed to be arranged, so that the daily maintenance is convenient, and the collection is convenient.

Description

Landfill leachate and landfill gas collecting system

Technical Field

The utility model relates to a refuse treatment technical field especially relates to a landfill leachate and landfill gas collecting system.

Background

In the process of landfill, pollutants in the garbage are separated out along with water due to precipitation, garbage self-moisture and the like, so that garbage leachate is formed. The landfill leachate has higher concentration of organic matters and ammonia nitrogen, and various pollutants. If the leachate is not treated and is directly discharged into the environment, the leachate can pollute water resources, even soil, crops, aquatic animals and the like, and seriously threatens the health of human beings. Therefore, the landfill leachate is treated to ensure that the effluent quality reaches the discharge standard.

At present, leachate in a household garbage pile and landfill gas are guided and exhausted by a horizontal pipeline to flow out for uniform collection and treatment, and the horizontal pipeline is guided and exhausted to cause insufficient gas production, which is mainly caused by the following two reasons:

1. after the horizontal pipeline is used for a period of time, as the garbage stack sinks, leachate in the stack cannot be discharged from the horizontal pipe well, and the horizontal collecting pipe well with most of the length is blocked; or the percolate is blocked at the turning part of the horizontal well and cannot be dredged in time;

2. the water content of the landfill gas in the garbage pile is high, the internal temperature of the pile is about 45 ℃, a large amount of condensed water is generated after the gas of the pile is pumped out and cooled, and the condensed water is easy to block pipelines and influence the pumping and the drainage of the landfill gas.

Due to the defects, the pipeline needs to be frequently patrolled and maintained to dredge the pipeline, the environmental risk caused by the overflow of percolate and condensed water is prevented, the maintenance is difficult, and the collection and the treatment of the percolate and the landfill gas in the landfill site are seriously influenced.

Disclosure of Invention

In order to solve the problem, the utility model provides a landfill leachate and landfill gas collecting system, its simple structure, reasonable in design can effectively avoid the pipeline to block up and the landfill gas leaks, collects effectually, maintains easily.

The utility model adopts the technical proposal that:

the utility model provides a landfill leachate and landfill gas collection system, includes first air duct, second air duct and aqueduct, the relative horizontal direction of first air duct is inclination setting, the one end of first air duct stretches into in the landfill, the second air duct with the aqueduct respectively with first air duct does not stretch into landfill one end and is connected, the second air duct is located first air duct with between the aqueduct, just first air duct the second air duct with the aqueduct communicates each other, the second air duct sets up along vertical direction, the second air duct is kept away from first air duct one end is connected with little negative pressure pump drainage subassembly, be equipped with water seal portion in the aqueduct.

The technical proposal is further improved in that the inclination angle of the first air duct is 3-5 degrees.

The technical proposal is further improved in that a T-shaped pipe fitting is arranged at the joint of the first air duct and the second air duct.

According to the technical scheme, the pipeline length of the second air duct in the vertical direction is larger than 1.5 m, and a PE butterfly valve is arranged between the second air duct and the micro negative pressure pumping and exhausting assembly.

The further improvement of the technical scheme is that a flange and a sealing ring are arranged at the joint of the water guide pipe and the first air guide pipe.

The further improvement of the technical scheme is that the water guide pipe is a steel wire hose.

The technical scheme is further improved in that the water guide pipe is provided with a U-shaped bend, the water seal part is arranged at the U-shaped bend, and the water seal height of the water seal part is larger than 1.0 meter.

The utility model has the advantages as follows:

the utility model discloses a include first air duct, second air duct and aqueduct, first air duct is the inclination setting relatively the horizontal direction, the one end of first air duct stretches into in the landfill yard, second air duct and the aqueduct respectively with first air duct does not stretch into landfill yard one end and is connected, the second air duct is located between first air duct and the aqueduct, and just first air duct, second air duct and the aqueduct communicate with each other, second air duct sets up along vertical direction, second air duct keeps away from one end of first air duct, is connected with the exhaust subassembly of micro negative pressure, be equipped with water seal portion in the aqueduct, the utility model discloses a first air duct is the inclination setting, can form that the end is high, the export is low, and the filtration liquid in the landfill yard rubbish pile can flow out the rubbish pile body through the slope, wherein landfill gas gets into the second air duct, carries out pump drainage collection processing, and wherein filtration liquid gets into the aqueduct, through the excessive aftertreatment in the water seal portion of locating the aqueduct, and because the interior liquid of collecting tube is discharged through the water seal overflow, need not set up electric and automatic control and regularly pump drainage and make things convenient for routine maintenance, because the utility model discloses a second air duct is that vertical direction sets up, and landfill gas is at the rising process, and the temperature descends, and the comdenstion water condenses, and the comdenstion water can flow back, continues to handle, and the utility model discloses a water seal portion can block landfill gas and leak outward, the utility model has the advantages of simple structure, reasonable in design can effectively discharge filtration liquid and landfill gas in the landfill yard heap body, also solves the pipeline blockage problem that the gas-liquid mixed drainage leads to simultaneously, and it is easy to maintain, convenient to use.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the utility model in the installation and use states;

description of reference numerals: 1. the air-conditioning system comprises a first air duct, 2 second air ducts, 3 water guide pipes, 4T-shaped pipe fittings, 5 PE butterfly valves and 6 flanges.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1-2 and fig. 1-2, the landfill leachate and landfill gas collecting system of this embodiment includes a first air duct 1, a second air duct 2 and a water guiding pipe 3, the first air duct 1 is disposed at an inclined angle relative to the horizontal direction, one end of the first air duct 1 extends into the landfill, the second air duct 2 and the water guiding pipe 3 are respectively connected with one end of the first air duct 1 that does not extend into the landfill, the second air duct 2 is disposed between the first air duct 1 and the water guiding pipe 3, the first air duct 1, the second air duct 2 and the water guiding pipe 3 are communicated with each other, the second air duct 2 is disposed along the vertical direction, one end of the second air duct 2, which is far away from the first air duct 1, is connected with a micro-negative pressure pumping and exhausting assembly, a water sealing part is disposed in the water guiding pipe 3, the first air duct 1 of the utility model is arranged in an inclined angle, which can form a high end and a low outlet for the percolate entering the landfill garbage stack, the percolate in the landfill garbage stack can flow out of the garbage stack through a slope, the landfill gas in the landfill garbage stack enters the second air duct 2 for pump drainage and collection treatment, the percolate in the landfill garbage stack enters the water guide pipe 3 and is treated after overflowing through the water seal part arranged on the water guide pipe 3, and the percolate in the water guide pipe 3 is discharged through water seal overflow without arranging electric and automatic control timing pump drainage, thereby facilitating daily maintenance, meanwhile, because the second air duct 2 of the utility model is arranged in a vertical direction, the landfill gas rises in the rising process, the temperature drops, the condensed water flows back after condensing, enters the water guide pipe 3 for continuous treatment, the pipeline can not be blocked, the pump drainage of the landfill gas is influenced, the using effect is good, in addition, the water seal part of the utility model can effectively prevent the leakage of the landfill, avoid producing the environmental risk, the utility model discloses simple structure, reasonable in design can effectively discharge filtration liquid and landfill gas in the landfill rubbish heap body, also solves the pipeline blockage problem that the liquid gas thoughtlessly arranges and lead to simultaneously, and it is easy to maintain, uses and collects the convenience.

In some embodiments, the inclination of first air duct 1 is 3 degrees ~ 5 degrees, specifically shows the inclination of first air duct 1 in this embodiment, and such setting makes first air duct 1 present certain slope, compares in the level setting, the utility model discloses an inclination sets up, can effectively avoid sinking because of the rubbish heap body, and the filtration liquid in the heap body can't be discharged from the pipeline, appears the condition of pipeline jam.

In some specific examples, first air duct 1 with second air duct 2 junction is equipped with T type pipe fitting 4, through setting up T type pipe fitting 4, is convenient for second air duct 2 and first air duct 1's connection, makes things convenient for the intercommunication of first air duct 1, second air duct 2 and aqueduct 3 simultaneously, and its simple structure connects convenient firm, excellent in use effect.

In some embodiments, the pipeline length of the vertical direction of second air duct 2 is greater than 1.5 meters, second air duct 2 with be equipped with PE butterfly valve 5 between the exhaust subassembly of little negative pressure, such setting of this embodiment, mainly because landfill gas water content of the rubbish heap body is very high, the internal temperature of heap is about 45 ℃ simultaneously, will produce a large amount of comdenstions water after taking out the gas cooling of the heap body, influence the gaseous exhaust of landfill, and in this embodiment, the pipeline length of the vertical direction of second air duct 2 is greater than 1.5 meters, and the comdenstion water can flow back, avoids influencing the exhaust processing to the landfill gas, in addition, overhauls the utility model discloses the time, can carry out the change of aqueduct 3 and the adjustment of water seal height through closing the PE butterfly valve 5 in this embodiment.

In other specific examples, aqueduct 3 with 1 junction of first air duct is equipped with flange 6 and sealing washer, through setting up flange 6, makes things convenient for

aqueduct

3 and 1 first air duct to be connected, simultaneously, through setting up the sealing washer, can realize better sealed effect, effectively prevents that the filtration liquid of

aqueduct

3 and 1 junction of first air duct from leaking outward, and the practicality is strong.

In some optional specific examples, the water guiding pipe 3 is a steel wire hose, and in this embodiment, the steel wire hose is specifically used, so that the steel wire hose is corrosion-resistant, has a long service life, and can better meet the use requirement.

In other specific embodiments, aqueduct 3 is equipped with the U type and buckles, water seal portion locates U type department of buckling, the water seal height of water seal portion is greater than 1.0 meter, in this embodiment, when filtration liquid flows into aqueduct 3, because the U type kink of aqueduct 3 is formed with the water seal, and the water seal height is greater than 1.0 meter, atmospheric pressure equals approximately 10kPa, water seal portion can effectively prevent landfill gas to pass through, simultaneously, filtration liquid gets into water seal portion after, water seal portion liquid level rises, infiltration liquid is held through water seal portion overflow and is overflowed to filtration liquid collection system, carry out subsequent processing, its simple structure, it is convenient to collect.

When the collecting system of the utility model is adopted to collect landfill leachate and landfill gas, firstly, the landfill leachate flows through the first air duct 1 which is arranged obliquely, wherein the landfill gas enters the second air duct 2, is pumped and discharged by micro negative pressure, and enters the water vapor of the second air duct 2 along with the landfill gas, and the water vapor is condensed by the cooling and gravity action in the gas rising process, flows back to the first air duct 1, then flows into the water guide pipe 3 to be collected; leachate flows into aqueduct 3, locates aqueduct 3 water seal portion excessive back is collected, and gets into along with leachate aqueduct 3's landfill gas, warp water seal portion blocks, can't pass through water seal portion leaks outward, and the landfill gas that is blockked continues to flow into second air duct 2 is handled, the utility model discloses a method, convenient operation collects easily, can effectively discharge landfill yard stack body leachate and landfill gas, also can solve the pipeline blockage problem that the liquid gas mixing row leads to simultaneously, because leachate discharges through the water seal overflow, need not set up electric and automatic control timing pump drainage, makes things convenient for daily maintenance moreover.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a landfill leachate and landfill gas collecting system, its characterized in that, includes first air duct, second air duct and aqueduct, the relative horizontal direction of first air duct is inclination setting, the one end of first air duct stretches into in the landfill, the second air duct with the aqueduct respectively with first air duct does not stretch into landfill one end and connects, the second air duct is located first air duct with between the aqueduct, just first air duct the second air duct with the aqueduct communicates each other, the second air duct sets up along vertical direction, the second air duct is kept away from first air duct one end is connected with little negative pressure and is taken out the row subassembly, be equipped with water seal portion in the aqueduct.

2. The landfill leachate and landfill gas collection system of claim 1, wherein the first gas duct is inclined at an angle of 3 degrees to 5 degrees.

3. The landfill leachate and landfill gas collection system of claim 1, wherein the junction of the first gas duct and the second gas duct is provided with a T-shaped fitting.

4. The landfill leachate and landfill gas collection system of claim 1, wherein the second gas duct has a vertical conduit length greater than 1.5 meters, and a PE butterfly valve is disposed between the second gas duct and the micro-negative pressure pump drainage assembly.

5. The landfill leachate and landfill gas collection system of claim 1, wherein the junction of the aqueduct and the first gas duct is provided with a flange and a sealing ring.

6. The landfill leachate and landfill gas collection system of claim 1, wherein the water conduit is provided as a steel wire hose.

7. The landfill leachate and landfill gas collecting system of claim 1, wherein the aqueduct is provided with a U-shaped bend, the water sealing part is arranged at the U-shaped bend, and the water sealing height of the water sealing part is greater than 1.0 m.