Double-layer HDPE (high-density polyethylene) membrane structure leak detection system for red mud storage yard backwater pool

Abstract

The invention discloses a leak detection system for a double-layer HDPE (high-density polyethylene) membrane structure of a red mud storage yard backwater pool, belongs to the technical field of pool leak detection, solves the problem of seepage prevention of the red mud storage yard backwater pool, and adopts the technical scheme that the leak detection system mainly comprises a collection pool arranged between an upper HDPE membrane and a lower HDPE membrane, a lining is arranged in the collection pool, a supporting structure is arranged at the bottom of the lining, and the supporting structure is connected with the collection pool through a pipeline. The supporting structure is arranged above the lower layer HDPE film, the lining layer is internally connected with a leak detection pipe, the leak detection pipe is connected with a leak detection well, and the leak detection well is provided with a drainage pipe; and a lift pump is also arranged in the leak detection well and is communicated with the drain pipe. The device is mainly used for monitoring whether leakage occurs in the water pool or not and discharging the leaked liquid in time, so that the HDPE film is prevented from being further damaged by the leaked liquid.

Description

Technical Field

[0001] The invention relates to a double-layer HDPE membrane structure leakage detection system for a red mud dump reclaiming pool, belonging to the technical field of pool leakage detection. Background Art

[0002] The red mud dump rewater pool is an important facility for collecting leaching water from the red mud dump. The pH value and the content of heavy metals such as lead and cadmium in the red mud leaching water are relatively high. If the anti-seepage measures are not appropriate, the red mud leaching water may leak and cause pollution to the surrounding environment. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a double-layer HDPE membrane structure leak detection system for a red mud dump recycle pool, which solves the problem of anti-seepage of the red mud dump recycle pool.

[0004] The present invention provides a double-layer HDPE membrane structure leak detection system for a red mud dump reclaim pool, comprising a collecting pool arranged between an upper HDPE membrane and a lower HDPE membrane, wherein a lining layer is arranged in the collecting pool, a supporting structure is arranged at the bottom of the lining layer, and the supporting structure is arranged above the lower HDPE membrane, a leak detection pipe is connected in the lining layer, the leak detection pipe is connected to a leak detection well, and the leak detection well is provided with a drainage pipe; a lifting pump is also arranged in the leak detection well, and the lifting pump is connected to the drainage pipe.

[0005] Furthermore, a geotextile protective layer is provided on the top of the lining layer, and the geotextile protective layer is arranged below the upper HDPE film.

[0006] Furthermore, a steel mesh is installed on the water inlet side of the leak detection pipe, and the steel mesh is fastened to the leak detection pipe by a steel wire hoop.

[0007] Furthermore, a waterproof pipe sleeve is provided at the connection between the leak detection pipe and the collection tank and at the connection between the leak detection pipe and the leak detection well.

[0008] Furthermore, the supporting structure is a geocomposite drainage net with double-sided filtering function, and its thickness is 5.00-7.00 mm.

[0009] Furthermore, the upper HDPE film and the lower HDPE film are both environmentally friendly HDPE smooth films or single rough films, the thickness of the upper HDPE film is 1.50-2.50 mm, and the thickness of the lower HDPE film is 0.50-1.50 mm.

[0010] The above technical scheme is adopted, and the advantages of the present invention are: whether the upper HDPE film and the lower HDPE film are leaking can be detected through the collection pool, and the leaked liquid is collected and sent to the leak detection well, and the leaked liquid is discharged from the leak detection well to prevent the leaked liquid from damaging the upper HDPE film and the lower HDPE film, thereby reducing the impact of the red mud leaching water in the return water pool on the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of welding the HDPE film and the leak detection tube; In the figure: upper HDPE membrane 1, lower HDPE membrane 2, collection tank 3, lining layer 4, leak detection pipe 5, leak detection well 6, drainage pipe 7, lifting pump 8, supporting structure 9, geotextile protective layer 10, wire mesh 11, steel wire 12, waterproof pipe sleeve 13, welding plate 14. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0013] The terms "first", "second", etc. (if any) in the specification and claims of the present invention are used to distinguish similar objects, rather than to describe a specific order or sequence. Even if "second" is used to distinguish before a certain technical feature, it does not necessarily indicate that "first" is present. It should be understood that in the present invention, "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. It should be understood that in the present invention, "multiple" refers to two or more. "And / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, X and / or Y can represent: X exists alone, X and Y exist at the same time, and Y exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "Including X, Y and Z", "Including X, Y, Z" means that X, Y, and Z are all included, "Including X, Y or Z" means that one of X, Y, and Z is included, and "Including X, Y and / or Z" means that any one, any two, or three of X, Y, and Z are included.

[0014] like Figure 1 As shown, the present invention provides a double-layer HDPE membrane structure leak detection system for a red mud dump reclaim pool, comprising a collecting pool 3 arranged between an upper HDPE membrane 1 and a lower HDPE membrane 2, a lining layer 4 is arranged in the collecting pool 3, a supporting structure 9 is arranged at the bottom of the lining layer 4, the supporting structure 9 is arranged above the lower HDPE membrane 2, a leak detection pipe 5 is connected in the lining layer 4, the leak detection pipe 5 is connected to a leak detection well 6, and the leak detection well 6 is provided with a drainage pipe 7; a lifting pump 8 is also arranged in the leak detection well 6, and the lifting pump 8 is connected to the drainage pipe 7.

[0015] The present invention can detect whether the upper HDPE film 1 and the lower HDPE film 2 are leaking through the collecting pool 3, and at the same time, the leaked liquid is collected and sent to the leak detection well 6, and the leaked liquid is discharged from the leak detection well 6 to prevent the leaked liquid from damaging the upper HDPE film 1 and the lower HDPE film 2, thereby reducing the impact of the red mud leaching water in the return water pool on the surrounding environment.

[0016] Among them, a lifting pump 8 is also provided in the leak detection well 6, and the lifting pump 8 is connected to the drain pipe 7. After the leak detection pipe 5 discharges the leaked liquid into the leak detection well 6, the lifting pump 8 will suck the leaked liquid in the leak detection well 6, and after pressurizing the leaked liquid, discharge it from the leak detection well 6 through the connected drain pipe 7. The staff can conduct water quality testing based on the leaked liquid discharged from the drain pipe 7, and choose to discharge it into the return water pool or directly discharge it according to the water quality.

[0017] Specifically, the lining layer 4 is mainly composed of pebbles, and a supporting structure 9 is provided at the bottom of the lining layer 4, and the supporting structure 9 is arranged above the lower HDPE film 2. The supporting structure 9 can prevent the pebbles from crushing the lower HDPE film 2; and a geotextile protective layer 10 is provided on the top of the lining layer 4, and the geotextile protective layer 10 is arranged below the upper HDPE film 1. Not only that, in this embodiment, except for the bottom of the lining layer 4, all contact surfaces of the lining layer 4 with the upper HDPE film 1 and the lower HDPE film 2 are provided with a geotextile protective layer 10 for protecting the upper HDPE film 1 and the lower HDPE film 2.

[0018] Among them, in this embodiment, the supporting structure 9 is a geocomposite drainage net with double-sided filtering function, and its thickness is 6.00mm; the upper HDPE film 1 and the lower HDPE film 2 are both environmentally friendly HDPE smooth film or single rough film, the upper HDPE film 1 is 2.00mm thick, and the lower HDPE film 2 is 1.00mm thick.

[0019] Among them, a steel wire 12 mesh 11 is installed on the water inlet side of the leak detection pipe 5. The steel wire 12 mesh 11 is tightened on the leak detection pipe 5 by the steel wire 12. The steel wire 12 mesh 11 can effectively prevent pebbles in the lining layer 4 from entering the leak detection pipe 5.

[0020] It can be understood that in order to prevent leakage at the installation location of the leak detection tube 5, a waterproof pipe sleeve 13 is provided at the connection between the leak detection tube 5 and the collection pool 3 and at the connection between the leak detection tube 5 and the leak detection well 6 to prevent the leaked liquid from leaking out from the connection and causing damage to the environment, and the waterproof sleeve is a flexible structure.

[0021] In this embodiment, since the leak detection tube 5 needs to extend into the interior of the lining layer 4, the leak detection tube 5 needs to pass through the lower HDPE film 2. The leak detection tube 5 and the lower HDPE film 2 are connected at the perforations by welding, and a welding plate 14 for connection is also provided between the leak detection tube 5 and the lower HDPE film 2.

[0022] In addition to the above-mentioned preferred embodiments, the present invention also has other implementation modes. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. A double-layer HDPE membrane structure leak detection system for a red mud dump reclaim pool, characterized in that: The invention comprises a collecting pool (3) arranged between an upper HDPE film (1) and a lower HDPE film (2), wherein a lining layer (4) is arranged in the collecting pool (3), a supporting structure (9) is arranged at the bottom of the lining layer (4), and the supporting structure (9) is arranged above the lower HDPE film (2); a leak detection pipe (5) is connected in the lining layer (4), and the leak detection pipe (5) is connected to a leak detection well (6), and the leak detection well (6) is provided with a drainage pipe (7); a lifting pump (8) is also arranged in the leak detection well (6), and the lifting pump (8) is connected to the drainage pipe (7).

2. The double-layer HDPE membrane structure leak detection system for the red mud dump reclaiming pool according to claim 1 is characterized by: A geotextile protective layer (10) is provided on the top of the lining layer (4), and the geotextile protective layer (10) is arranged below the upper HDPE film (1).

3. The double-layer HDPE membrane structure leak detection system for the red mud dump reclaiming pool according to claim 1 is characterized by: A steel mesh (11) is installed on the water inlet side of the leak detection pipe (5), and the steel mesh (11) is fastened to the leak detection pipe (5) by means of a steel wire (12).

4. The double-layer HDPE membrane structure leak detection system for the red mud dump reclaiming pool according to claim 1 is characterized by: A waterproof pipe sleeve (13) is provided at the connection between the leak detection pipe (5) and the collection tank (3) and at the connection between the leak detection pipe (5) and the leak detection well (6).

5. The double-layer HDPE membrane structure leak detection system for the red mud dump reclaiming pool according to claim 1 is characterized by: The supporting structure (9) is a geocomposite drainage net with double-sided filtering function, and its thickness is 5.00-7.00 mm.

6. The double-layer HDPE membrane structure leak detection system for the red mud dump reclaiming pool according to claim 1 is characterized by: The upper HDPE film (1) and the lower HDPE film (2) are both environmentally friendly HDPE smooth films or single rough films. The thickness of the upper HDPE film (1) is 1.50 to 2.50 mm, and the thickness of the lower HDPE film (2) is 0.50 to 1.50 mm.

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