Mine water comprehensive utilization treatment device

Abstract

The utility model relates to mine water treatment technical field especially relates to a mine water comprehensive utilization treatment device, and the device includes pre -treatment pool, post -treatment pool and be located in the filter cylinder and filter part of pre -treatment pool, pre -treatment pool export end and post -treatment pool import end are connected through water pump and pipeline, and pre -treatment pool is separated into filter area and flocculation area along the water flow direction through first baffle, and post -treatment pool is separated into self -gravity precipitation area, inclined -pipe precipitation area and reuse area along the water flow direction in proper order through second baffle and third baffle, and flocculation unit is equipped with by the flocculation room of a plurality of series connection in flocculation area, the utility model has reduced the floor area and the volume of concrete structure significantly, and the hydraulic connection mode is passed through among each treatment unit, effectively reduced the long connecting pipeline and the number of promotion water pump in traditional craft, reduced the infrastructure and operating cost, promoted the efficiency and stability of mine water treatment.

Description

Technical Field

[0001] This utility model relates to the field of mine water treatment technology, and in particular to a comprehensive utilization and treatment device for mine water. Background Technology

[0002] Mine water originates from underground mining water and seepage from coal and metal mines. Its main pollutants include suspended solids, heavy metals, high mineralization, and acidity. The water quality is characterized by high turbidity, possible radioactive substances, and relatively strong overall water quality stability. Based on the above characteristics, the main difficulties in the treatment of mine water are the removal of heavy metals, acid neutralization, and desalination. Through scientific management, mine water can be used in a multi-dimensional and comprehensive manner. The comprehensive utilization directions include: (1) Industrial reuse: After treatment, it can be used for industrial production processes such as underground dust control, equipment cooling, and coal washing, realizing the recycling of water resources; (2) Ecological water replenishment: After meeting the discharge standards, it can be discharged into rivers or wetlands around the mining area, which can effectively restore and improve the mining area ecosystem; (3) Agricultural irrigation: For low salinity mine water, after softening treatment, it can be used as agricultural irrigation water; (4) Resource recovery: Lithium, rare earth and other valuable metals can be extracted from mine water, and coal slime and other resources can be recovered at the same time, realizing the dual benefits of "water management" and "resource utilization".

[0003] Currently, the treatment and comprehensive utilization of coal mine wastewater mostly adopts the "coagulation sedimentation + filtration" process. This process first adds flocculants to aggregate fine particles in the water to form flocs, then performs gravity separation in a sedimentation tank, and finally uses filters (such as V-type filters, fiber filters, etc.) to remove residual trace suspended solids, ensuring that the effluent quality meets the reuse standards. However, this mainstream process has many inherent drawbacks in practical applications: the treatment units are scattered and occupy a large area, and the structures rely on complex pipelines and pumping equipment for connection, resulting in high infrastructure investment, high energy consumption, and a lengthy process flow; the core flocculation stage often uses mechanical stirring or simple pipeline mixing, which has low mixing efficiency and high energy consumption, easily leading to floc waste and loose and fine floc structure, thus increasing the treatment load of subsequent sedimentation and filtration units; the sedimentation stage usually relies on a single large sedimentation tank, which has low hydraulic load, limited sedimentation efficiency, and the effluent quality is prone to fluctuation; as the last barrier to ensure effluent quality, the filter media of the filtration unit is easily penetrated and blocked by fine flocs, requiring frequent backwashing, which not only makes operation and maintenance complex, but also generates a large amount of backwash wastewater, further increasing the system's operating cost and treatment difficulty.

[0004] Therefore, in response to the problems of existing devices such as dispersed treatment units, large footprint, low mixing efficiency, fluctuating effluent quality, and easy clogging of filter media, a comprehensive mine water utilization and treatment device can be designed. This device adopts a highly compact integrated design, which significantly reduces the footprint and volume of concrete structures. The treatment units are connected by hydraulic means, which effectively reduces the lengthy connecting pipes and the number of booster pumps in traditional processes, thereby effectively reducing infrastructure and operating costs and improving treatment efficiency and stability. Utility Model Content

[0005] In order to overcome the problems of existing equipment such as dispersed treatment units, large footprint, low mixing efficiency, easy fluctuation of effluent water quality, and easy clogging of filter media.

[0006] The technical solution of this utility model is as follows: a comprehensive utilization and treatment device for mine water, including a pretreatment tank, a posttreatment tank, and a filter cylinder and filter components installed in the pretreatment tank; the outlet end of the pretreatment tank and the inlet end of the posttreatment tank are connected by a water pump and pipeline; the pretreatment tank is divided into a filtration zone and a flocculation zone along the water flow direction by a first baffle, and the posttreatment tank is divided into a gravity sedimentation zone, an inclined tube sedimentation zone and a reuse zone along the water flow direction by a second baffle and a third baffle; the flocculation zone is provided with a flocculation unit composed of several flocculation chambers connected in series, and adjacent flocculation chambers are connected by a connecting pipe with a mixing component; a filter cylinder is installed at the center of the filtration zone, and a detachable filter component is installed inside the filter cylinder; an inclined plate group is installed in the inclined tube sedimentation zone; water supply pipes are installed in both the gravity sedimentation zone and the inclined tube sedimentation zone; and an inlet pipe extending into the filtration zone is installed at the inlet of the pretreatment tank.

[0007] Preferably, the mine water first enters the filtration zone of the pretreatment tank through the inlet pipe, and then is filtered by the filtration components inside the filter cylinder to effectively intercept large suspended solids and impurities in the water, completing the initial physical filtration. After preliminary filtration, the water gathers in the filtration zone and enters the flocculation zone. The water flows through the connecting pipes between the flocculation chambers. The mixing components force the water to generate violent eddies and collisions, thereby achieving efficient and thorough mixing of the reagent and the water, causing fine particles to clump together into easily precipitated flocs. After sufficient flocculation, the water is pumped into the post-treatment tank through the pipeline. The water first enters the gravity sedimentation zone, where most of the flocs settle naturally under gravity. As the water level rises, the water flows into the inclined tube sedimentation zone through the water supply pipe and then through the inclined plate group. The inclined plates greatly increase the sedimentation area and greatly improve the sedimentation efficiency by utilizing the shallow pool principle, so that the remaining fine flocs are quickly separated and settled. The supernatant after multiple sedimentation processes enters the reuse area to complete the final water separation, enabling the comprehensive utilization of mine water resources.

[0008] Preferably, the filter element adopts a single-layer or multi-layer filter structure with a mesh size of 0.5 to 5 mm.

[0009] Preferably, the filter element is a grid structure with a grid gap of 10-50mm, and the grid surface is covered with an activated carbon or quartz sand filler layer.

[0010] Preferably, the water inlet of the water pipe is located 5 to 20 cm above the filter element.

[0011] Preferably, the water inlet and outlet are located below the filter element.

[0012] Preferably, a first water inlet is provided at the bottom of the filter cylinder.

[0013] As a preferred option, the reuse area is divided into a greywater area and a clean water area by a fourth partition, and a second water inlet is provided at the bottom of the fourth partition.

[0014] Preferably, the mixing component includes several sets of baffles, with adjacent baffles alternately fixed to the upper and lower walls of the connecting pipe, and the distance between the free end of the baffle and the opposite pipe wall is 1 / 4 to 1 / 3 of the pipe diameter.

[0015] Preferably, the mixing component is a spiral static mixer, which has no less than three 180° twisting mixing units inside.

[0016] The beneficial effects of this utility model are: 1. Pretreatment, flocculation, multi-stage sedimentation, and reclaimed water storage are integrated into two treatment tanks, a pre-treatment tank and a post-treatment tank. The modular zoning of functions is achieved through a clever partition design. This highly compact integrated design significantly reduces the floor space and volume of concrete structures, thereby reducing engineering construction costs. At the same time, the hydraulic connection between each treatment unit effectively reduces the lengthy connecting pipes and the number of booster pumps in traditional processes, significantly reducing equipment investment, pipeline complexity, and long-term energy consumption, achieving dual savings in infrastructure and operating costs. 2. An independent mechanical filtration zone is set up before the flocculation zone. By installing detachable filter components inside the filter cylinder, large particulate suspended matter in the water is effectively removed first. This pre-filtration step creates good conditions for subsequent flocculation and sedimentation, avoiding large impurities consuming flocs or interfering with floc formation. The flocculation unit adopts a design of multiple flocculation chambers connected in series by connecting pipes, and a high-efficiency mixing component is set in the connecting pipes. This design achieves instantaneous, full, and uniform mixing of the agent and water by generating intense and controllable eddies. The resulting flocs are larger and denser with excellent settling performance. This efficient flocculation effect significantly reduces the content of colloidal particles and fine suspended matter in the water from the source, greatly reducing the processing pressure on the sedimentation unit. 3. An innovative two-stage series sedimentation process combining gravity sedimentation and inclined tube sedimentation is adopted. Water first enters the gravity sedimentation zone, where most large-sized flocs settle stably at low flow rates. The supernatant then overflows or enters the inclined tube sedimentation zone through the supply pipe. The application of inclined tubes significantly increases the sedimentation area, and the "shallow pool theory" greatly improves sedimentation efficiency, almost completely removing residual fine and loose flocs. This graded, deep sedimentation process ensures the clarity and stability of the effluent, allowing it to meet high-standard reclaimed water quality without complex filtration units. It can be directly stored in the reuse area, simplifying the process and avoiding water loss and operational burden caused by backwashing of filtration units. This truly achieves efficient water resource recovery and comprehensive utilization. The entire system operates stably, has strong resistance to shock loads, and is easy to maintain. Attached Figure Description

[0017] Figure 1 The diagram shown is a three-dimensional structural schematic of Embodiment 1 of the mine water comprehensive utilization and treatment device of this utility model; Figure 2 The diagram shown is a cross-sectional three-dimensional structural schematic of Embodiment 1 of the mine water comprehensive utilization and treatment device of this utility model; Figure 3 The diagram shown is a three-dimensional structural schematic of Embodiment 2 of the mine water comprehensive utilization and treatment device of this utility model; Figure 4 The diagram shown is a cross-sectional three-dimensional structural schematic of Embodiment 2 of the mine water comprehensive utilization and treatment device of this utility model; Figure 5 The diagram shown is a three-dimensional structural schematic of Embodiment 3 of the mine water comprehensive utilization and treatment device of this utility model; Figure 6 The diagram shown is a cross-sectional three-dimensional structural schematic of Embodiment 3 of the mine water comprehensive utilization and treatment device of this utility model; Figure 7 The diagram shown is a three-dimensional structural schematic of the first type of mixing component in the mine water comprehensive utilization and treatment device of this utility model; Figure 8 The diagram shown is a second three-dimensional structural schematic of the mixing component in the mine water comprehensive utilization and treatment device of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1. Pretreatment tank; 101. Filtration zone; 102. Flocculation zone; 2. Posttreatment tank; 201. Gravity sedimentation zone; 202. Inclined tube sedimentation zone; 203. Reuse zone; 2031. Grey water zone; 2032. Clear water zone; 3. Water pump; 4. First baffle; 5. Second baffle; 6. Third baffle; 7. Fourth baffle; 8. Flocculation unit; 801. Flocculation chamber; 802. Connecting pipe; 803. Mixing component; 9. Filter cylinder; 10. Filter component; 11. Inclined plate assembly; 12. First inlet; 13. Inlet pipe; 14. Water supply pipe; 15. Second inlet. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Example 1 Please see Figures 1-2 and Figure 7 This utility model provides an embodiment: a comprehensive utilization and treatment device for mine water, including a pretreatment tank 1 and a posttreatment tank 2 connected to the outlet of the pretreatment tank 1. The outlet of the pretreatment tank 1 and the inlet of the posttreatment tank 2 are connected by a water pump 3 and pipelines. It also includes a filter cylinder 9 and a filter component 10. The pretreatment tank 1 is divided into a filtration zone 101 and a flocculation zone 102 along the water flow direction by a first baffle 4. The posttreatment tank 2 is sequentially divided into a gravity sedimentation zone 201 and an inclined tube sedimentation zone 201 along the water flow direction by a second baffle 5 and a third baffle 6. The sedimentation zone 202 and the reuse zone 203 are equipped with a flocculation unit 8 consisting of several flocculation chambers 801 connected in series in the flocculation zone 102. Adjacent flocculation chambers 801 are connected by a connecting pipe 802 with a mixing component 803. A filter cylinder 9 is installed at the center of the filtration zone 101. A detachable filter component 10 is installed inside the filter cylinder 9. An inclined plate assembly 11 is installed in the inclined tube sedimentation zone 202. Water supply pipes 14 are installed in both the gravity sedimentation zone 201 and the inclined tube sedimentation zone 202. An inlet pipe 13 extending into the filtration zone 101 is installed at the inlet of the pretreatment tank 1.

[0021] The filter element 10 adopts a multi-layer filter screen structure with a mesh size of 0.5 to 5 mm, and the water outlet of the water inlet pipe 13 is located 5 to 20 cm above the filter element 10. Meanwhile, the filter cylinder 9 has a first water inlet 12 at the bottom, the reuse area 203 is divided into a medium water area 2031 and a clean water area 2032 by the fourth partition 7, and the fourth partition 7 has a second water inlet 15 at the bottom. In addition, the mixing component 803 includes several sets of baffles, with adjacent baffles being alternately fixed to the upper and lower walls of the connecting pipe 802, and the distance between the free end of the baffle and the opposite pipe wall being 1 / 4 to 1 / 3 of the pipe diameter.

[0022] During operation, the mine water first enters the filtration zone 101 of the pretreatment tank 1 through the inlet pipe 13, and then is filtered through the filter component 10 in the filter cylinder 9, effectively intercepting large suspended particles and impurities in the water to complete the initial physical filtration. After preliminary filtration, the water enters the flocculation zone 102 through the first inlet 12 at the bottom of the filter cylinder 9. The water flows through the connecting pipe 802 between the flocculation chambers 801. The mixing component 803 forces the water to generate violent eddies and collisions, thereby achieving efficient and thorough mixing of the reagent and the water, causing the fine particles to condense into flocs that are easy to settle. After sufficient flocculation, the water is pumped into the post-treatment tank 2 by the water pump 3 through the pipeline. The water first enters the gravity sedimentation zone 201, where most of the flocs settle naturally under gravity. As the water level rises, the water flows into the inclined tube sedimentation zone 202 through the water supply pipe 14 and flows through the inclined plate group 11. The inclined plates greatly increase the sedimentation area and greatly improve the sedimentation efficiency by utilizing the shallow pool principle, so that the remaining fine flocs are quickly separated and settled. After multiple sedimentation processes, the supernatant enters the reuse zone 203. The reuse zone 203 is divided into a greywater zone 2031 and a clean water zone 2032 by the fourth partition 7. The water flows into the clean water zone 2032 through the second inlet 15 at the bottom of the fourth partition 7, completing the final water quality separation. The sludge that settles in different zones is periodically discharged, while the treated clean water is stored in the clean water zone 2032. Once the water quality meets the reuse standards, the comprehensive utilization of mine water resources can be realized.

[0023] Example 2 Please see Figures 3-4 and Figure 8 The difference from Embodiment 1 is that the water outlet of the inlet pipe 13 is located below the filter component 10, and the mixing component 803 is a spiral static mixer with no less than 3 mixing units that rotate 180° inside.

[0024] By placing the water outlet of the inlet pipe 13 below the filter component 10, a bottom-up water flow is formed, which can more effectively flush the filter screen, significantly reduce filter hole clogging, and reduce the backwashing frequency. At the same time, the use of a spiral static mixer with multiple 180° twisting units inside results in higher and more uniform mixing efficiency, which can significantly reduce the amount of flocculant used and ensure the formation of denser flocs, thereby improving the subsequent sedimentation effect.

[0025] Example 3 Please see Figures 5-6 and Figure 8 The difference from Example 2 is that the filter element 10 has a grid structure with a grid gap of 10-50mm and the grid surface is covered with an activated carbon or quartz sand filler layer.

[0026] The grid structure combined with the lower activated carbon / quartz sand packing layer forms a highly efficient composite filtration system. It first coarses and then refines, resulting in stronger dirt-holding capacity and the ability to adsorb small particulate matter and some dissolved pollutants.

[0027] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A comprehensive mine water utilization and treatment device, comprising a pretreatment tank (1) and a posttreatment tank (2) connected to the outlet end of the pretreatment tank (1), wherein the outlet end of the pretreatment tank (1) and the inlet end of the posttreatment tank (2) are connected by a water pump (3) and pipelines, characterized in that: It also includes a filter cylinder (9) and a filter component (10). The pretreatment tank (1) is divided into a filtration zone (101) and a flocculation zone (102) along the water flow direction by a first baffle (4). The posttreatment tank (2) is divided into a gravity sedimentation zone (201), an inclined tube sedimentation zone (202), and a reuse zone (203) along the water flow direction by a second baffle (5) and a third baffle (6). The flocculation zone (102) is provided with a flocculation unit (8) composed of several flocculation chambers (801) connected in series. The condensation chamber (801) is connected by a connecting pipe (802) with a mixing component (803). A filter cylinder (9) is installed in the center of the filtration zone (101). A detachable filter component (10) is installed inside the filter cylinder (9). An inclined plate assembly (11) is installed in the inclined tube sedimentation zone (202). Water supply pipes (14) are installed in both the gravity sedimentation zone (201) and the inclined tube sedimentation zone (202). An inlet pipe (13) extending into the filtration zone (101) is installed at the inlet of the pretreatment tank (1).

2. The mine water comprehensive utilization and treatment device according to claim 1, characterized in that: The filter element (10) adopts a single-layer or multi-layer filter structure with a mesh size of 0.5 to 5 mm.

3. The mine water comprehensive utilization and treatment device according to claim 1, characterized in that: The filter element (10) has a grid structure with a grid gap of 10-50 mm and an activated carbon or quartz sand filler layer on the grid surface.

4. A mine water comprehensive utilization and treatment device according to claim 2 or 3, characterized in that: The water outlet of the inlet pipe (13) is located 5 to 20 cm above the filter element (10).

5. A mine water comprehensive utilization and treatment device according to claim 2 or 3, characterized in that: The water outlet of the inlet pipe (13) is located below the filter component (10).

6. The mine water comprehensive utilization and treatment device according to claim 5, characterized in that: The filter cylinder (9) has a first water inlet (12) at the bottom.

7. The mine water comprehensive utilization and treatment device according to claim 1, characterized in that: The reuse area (203) is divided into a greywater area (2031) and a clean water area (2032) by a fourth partition (7). A second water inlet (15) is provided at the bottom of the fourth partition (7).

8. The mine water comprehensive utilization and treatment device according to claim 1, characterized in that: The mixing component (803) includes several sets of baffles, with adjacent baffles being alternately fixed to the upper and lower walls of the connecting pipe (802), and the distance between the free end of the baffle and the opposite pipe wall being 1 / 4 to 1 / 3 of the pipe diameter.

9. A mine water comprehensive utilization and treatment device according to claim 1, characterized in that: The mixing component (803) is a spiral static mixer, which has no less than three 180° twisted mixing units inside.

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