Sludge treatment airing pool connected with skid-mounted treatment equipment for discharging and collecting water from coal bed gas

Abstract

The utility model discloses a sludge treatment airing pool connected with skid-mounted treatment equipment for coal bed gas drainage and mining water. The sludge treatment airing pool solves the problem of how to accelerate the hardening time of sludge in a sludge pool. A rectangular brick cofferdam (2) is arranged in the closed pool body, a gravel layer (3) is arranged at the bottom in the closed pool body, a leachate drainage inner side pipeline (4) is arranged in the gravel layer (3), the leachate drainage inner side pipeline (4) penetrates through the rectangular brick cofferdam (2) to be communicated with a pool outer drainage pipe (11), a sludge leading-in pipeline (10) is arranged on the upper portion of the rectangular brick cofferdam (2), and the inner side end of the sludge leading-in pipeline (10) is arranged in the closed pool body; filter cloth (5) is arranged on the top end face of the gravel layer (3), a cushion block (8) is arranged on the top end face of the rectangular brick cofferdam (2), and a transparent organic glass plate (9) is placed on the cushion block (8); and rapid drying of the sludge in the pool is realized.

Description

Technical Field

[0001] The utility model relates to a water pollution treatment device, in particular to a sludge treatment and drying pond connected with a skid-mounted treatment device for coalbed methane drainage water. Background Art

[0002] At present, the water pollution risk brought by coalbed methane exploitation is becoming increasingly prominent; during the coalbed methane exploitation process, with the extraction of the gas to be exploited, a large amount of drainage water will be discharged from the gas well. The drainage water contains pollutants such as suspended solids, organic matter, fluoride, petroleum, etc. Especially the pharmaceutical materials used in coalbed methane drilling exploitation will also enter the produced water, causing serious water pollution to the drainage water; the existing coalbed methane wells are relatively scattered, generally scattered in mountainous and hilly areas with farmland and rivers nearby; the drainage water generated by multiple gas wells on-site is generally collected, and the collected drainage water should be treated to remove the pollutants in the water. The treated drainage water is generally discharged locally into the surface river; therefore, the pollution treatment of coalbed methane drainage water has become a top priority for local society and production enterprises.

[0003] For the treatment of coalbed methane drainage water, if treated by analogy with traditional industrial wastewater, a ground sewage treatment station needs to be built, which requires land acquisition and corresponding water treatment equipment, and has the defects of long construction time and large floor area; due to the dispersion of coalbed methane wells and the limited continuous exploitation time, it is neither economical nor practical to equip a ground fixed sewage treatment station beside the gas well; how to design a movable integral treatment device for drainage water has become an urgent requirement for coalbed methane drainage water treatment.

[0004] The main pollutants in the drainage water of coalbed methane are suspended solid pollution and ammonia nitrogen pollution. Generally, the water treatment method of coagulation → sedimentation → sand filtration → ultrafiltration is adopted; when using a movable integral drainage water treatment equipment, due to the limited space of the treatment equipment, the sludge deposited in the sedimentation tank needs to be discharged regularly. Generally, it needs to be discharged once every 1-2 days. The discharged sludge needs to be dried into sludge cakes, and then uniformly collected by the solid waste treatment department for harmless treatment to avoid causing coagulation pollution; the sludge generated by the skid-mounted treatment equipment for coalbed methane drainage water has a high water content and needs to be dewatered. If the traditional mechanical dewatering method is used to dehydrate and form a sludge cake with less water content, it needs to be dehydrated multiple times, and the dewatering efficiency is low, which is not conducive to high efficiency and energy saving; if a sludge drying pool is used for air drying, limited by the environmental site, the sludge drying pool cannot be made large enough. During on-site operation, there is often a phenomenon that the sludge in the sludge drying pool has not been dried, and new sludge is discharged into the drying pool, resulting in the disruption of the normal production rhythm of normal sludge cake formation. In addition, when the sludge is dried into a sludge cake, the operator also needs to enter the sludge pool to break the sludge cake into small pieces for easy cleaning from the sludge pool to the outside of the pool, which has the defects of time-consuming and high labor intensity; therefore, how to accelerate the hardening time of the sludge in the sludge pool and how to accelerate the operation of cleaning the sludge cake out of the pool have become urgent problems to be solved on site. Summary of the Invention

[0005] The utility model provides a sludge treatment and drying pool connected with the skid-mounted treatment equipment for coalbed methane drainage water, which solves the technical problems of how to accelerate the hardening time of the sludge in the sludge pool and how to accelerate the operation of cleaning the sludge cake out of the pool.

[0006] The utility model solves the above technical problems through the following technical solutions:

[0007] A sludge treatment and drying pool connected with the skid-mounted treatment equipment for coalbed methane drainage water, comprising a concrete bottom plate, on which a rectangular brick cofferdam is arranged. The concrete bottom plate and the rectangular brick cofferdam form a closed pool body. A gravel layer is arranged at the bottom inside the closed pool body, and an inner leachate drainage pipe is arranged in the gravel layer. The inner leachate drainage pipe passes through the rectangular brick cofferdam and is connected with the drain pipe outside the pool. A sludge inlet pipe is arranged at the upper part of the rectangular brick cofferdam. The outer end of the sludge inlet pipe is connected with the sludge hopper in the sedimentation sludge area, and the inner end of the sludge inlet pipe is arranged in the closed pool body; a filter cloth is arranged on the top surface of the gravel layer, a cushion block is arranged on the top surface of the rectangular brick cofferdam, and a transparent organic glass plate is placed on the cushion block; an air inlet and outlet is arranged between the transparent organic glass plate and the top surface of the rectangular brick cofferdam.

[0008] Filter cloth suspension ropes are arranged at intervals on the side of the filter cloth, and hooks are arranged at intervals on the inner vertical surface of the rectangular brick cofferdam. The upper ends of the filter cloth suspension ropes are hung on the hooks.

[0009] A grid frame is movably arranged on the filter cloth in the closed tank body, and sludge is filled in each grid of the grid frame; a left hanging ring and a right hanging ring are respectively and fixedly arranged at the top of the grid frame; a grid graphene heating plate is embedded on the partition plate of the grid frame, and the grid graphene heating plate is electrically connected to the heating power supply through a connecting wire; a side wall graphene heating plate is arranged on the inner side wall of the closed tank body, and the side wall graphene heating plate is connected to the heating power supply through a connecting wire. The heating power supply is arranged in the skid-mounted treatment equipment outside the closed tank body.

[0010] The utility model realizes the rapid drying of the sludge in the tank by means of air drying, sunlight exposure and the graphene heating plate to accelerate the drying of the sludge, and discharging the seepage liquid through osmosis; enables the sludge in the sludge hopper to be quickly dried after normal discharge, and realizes the quick cleaning of the dried sludge cake out of the tank. Description of the Drawings

[0011] Figure 1 is a schematic structural view of the utility model in the front view direction;

[0012] Figure 2 is a schematic structural view of the utility model in the side view direction;

[0013] Figure 3 is a schematic structural view of the utility model in the top view direction;

[0014] Figure 4 is a connection diagram of the grid frame 12 and the heating power supply 16 of the utility model. Detailed Description of the Invention

[0015] The present invention will be described in detail below with reference to the drawings:

[0016] A sludge treatment and drying pond connected to a skid-mounted treatment device for coalbed methane drainage water, comprising a concrete bottom slab 1 obtained by pouring concrete. The bottom of the concrete bottom slab 1 is tamped with plain soil, and the compaction coefficient is not less than 0.90. A rectangular brick cofferdam 2 is arranged on the concrete bottom slab 1. The rectangular brick cofferdam 2 is constructed with MU10 machine-made red bricks, and the inner and outer side surfaces of the wall are plastered with cement mortar. The concrete bottom slab 1 and the rectangular brick cofferdam 2 form a closed pool body. A gravel layer 3 is arranged at the bottom of the closed pool body, and an inner leachate drainage pipe 4 is arranged in the gravel layer 3. The inner leachate drainage pipe 4 passes through the rectangular brick cofferdam 2 and is connected to an external pool drain pipe 11. A sludge inlet pipe 10 is arranged at the upper part of the rectangular brick cofferdam 2. The outer end of the sludge inlet pipe 10 is connected to a sludge hopper in a sedimentation sludge area, and the inner end of the sludge inlet pipe 10 is arranged in the closed pool body; A filter cloth 5 is arranged on the top surface of the gravel layer 3. The water in the sludge entering the closed pool body passes through the filter cloth 5 and enters the gravel layer 3, and then enters the inner leachate drainage pipe 4 and is drained away through the external pool drain pipe 11, making the sludge change from dilute to dry; A plurality of cushion blocks 8 are arranged on the top surface of the rectangular brick cofferdam 2, and a transparent organic glass plate 9 is placed on the cushion blocks 8. The transparent organic glass plate 9 is placed movably on each cushion block 8. Sunlight shines on the sludge in the pool through the transparent organic glass plate 9, and the evaporated water vapor is discharged through an air inlet and outlet arranged between the transparent organic glass plate 9 and the top surface of the rectangular brick cofferdam 2. The transparent organic glass plate 9 also plays a role in blocking rainwater from entering the pool.

[0017] Filter cloth suspension ropes 6 are arranged at intervals on the side of the filter cloth 5, and hooks 7 are arranged at intervals on the inner vertical surface of the rectangular brick cofferdam 2. The upper ends of the filter cloth suspension ropes 6 are hung on the hooks 7; When the sludge in the pool is dried, the transparent organic glass plate 9 is first removed from the pool top; When the filter cloth 5 is damaged after being used multiple times, it can be removed from the hook and replaced.

[0018] A grid frame body 12 is movably arranged on the filter cloth 5 in the closed pool body, and sludge is filled in each grid of the grid frame body 12; Left lifting rings 13 and right lifting rings 14 are respectively fixedly arranged at the top of the grid frame body 12; Grid graphene heating plates are embedded on the partition plates of the grid frame body 12, and the grid graphene heating plates are electrically connected to a heating power supply 16 through connecting wires 15; Side wall graphene heating plates are arranged on the inner side wall of the closed pool body, and the side wall graphene heating plates are connected to the heating power supply 16 through connecting wires. The heating power supply 16 is arranged in a skid-mounted treatment device outside the closed pool body.

[0019] First, lay the filter cloth 5 in the closed pool body. The filter cloth 5 is laid flat on the bottom of the pool. Then, place the grid frame 12 on the laid filter cloth 5 by hoisting. Subsequently, also by hoisting, place the machine glass plate 9 on multiple cushion blocks 8 arranged on the top surface of the rectangular brick cofferdam 2; the sludge discharged from the skid-mounted equipment enters the closed pool body through the sludge inlet pipe 10 and fills each grid in the grid frame 12; the water in the sludge leaks through the filter cloth 5 into the inner side pipe 4 of the leachate drainage and is then drained away; the sludge in the grid is dried under the heating of the graphene heating plate and simultaneously under the sunlight irradiation, and the evaporated water vapor is discharged through the air inlet and outlet arranged between the transparent organic glass plate 9 and the top surface of the rectangular brick cofferdam 2; when the sludge is dry, first lift the machine glass plate 9 away from the pool body, and then lift the grid frame 12 upward by hoisting. The dried sludge in the pool is divided into small mud cakes, and the operator can easily transfer the small mud cakes out of the pool by entering the pool.

Claims

1. A sludge treatment and drying pool connected to a skid-mounted treatment device for coalbed methane drainage and production, comprising a concrete base plate (1), a rectangular brick cofferdam (2) being arranged on the concrete base plate (1), the concrete base plate (1) and the rectangular brick cofferdam (2) forming a closed pool body, characterized in that: A gravel layer (3) is provided at the bottom of the closed pool body, an inner leachate drainage pipe (4) is provided in the gravel layer (3), the inner leachate drainage pipe (4) passes through a rectangular brick cofferdam (2) and is connected to an outer drainage pipe (11) of the pool, a sludge introduction pipe (10) is provided on the upper part of the rectangular brick cofferdam (2), the outer end of the sludge introduction pipe (10) is connected to a sludge bucket in a sludge settling area, and the inner end of the sludge introduction pipe (10) is provided in the closed pool body; a filter cloth (5) is provided on the top surface of the gravel layer (3), a cushion block (8) is provided on the top surface of the rectangular brick cofferdam (2), and a transparent organic glass plate (9) is placed on the cushion block (8); and an air inlet and outlet are provided between the transparent organic glass plate (9) and the top surface of the rectangular brick cofferdam (2).

2. The sludge treatment drying pool connected to the skid-mounted treatment equipment for coalbed methane drainage water according to claim 1 is characterized in that: Filter cloth hanging ropes (6) are arranged at intervals on the sides of the filter cloth (5), and hooks (7) are arranged at intervals on the inner vertical surface of the rectangular brick cofferdam (2), and the upper ends of the filter cloth hanging ropes (6) are hung on the hooks (7).

3. The sludge treatment drying pool connected to the skid-mounted treatment equipment for coalbed methane drainage water according to claim 1 is characterized in that: A grid frame (12) is movably arranged on the filter cloth (5) in the closed tank body, and each grid of the grid frame (12) is filled with sludge; a left hanging ring (13) and a right hanging ring (14) are fixedly arranged at the top of the grid frame (12); a grid graphene heating plate is pre-buried on the partition plate of the grid frame (12), and the grid graphene heating plate is electrically connected to a heating power supply (16) through a connecting wire (15); a side wall graphene heating plate is arranged on the inner side wall of the closed tank body, and the side wall graphene heating plate is connected to the heating power supply (16) through a connecting wire, and the heating power supply (16) is arranged in a skid-mounted processing device outside the closed tank body.

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