Efficient treatment system and method for mine water suspended solids

Abstract

The invention discloses an efficient treatment system and method for mine water suspended solids, and belongs to the technical field of water treatment. The system comprises an outer cylinder and a water inlet pipeline, wherein an inner cylinder is arranged in the outer cylinder; the outlet end of the water inlet pipeline penetrates through the outer cylinder and is arranged in the inner cylinder; a pipeline flocculation reactor is arranged on the water inlet pipeline and is used for adding a coagulant to react with inlet water during working; the outer cylinder is connected with an activated carbon adding system and a centrifugal device; a separation and clarification device is arranged at the upper part of the outer cylinder, and the centrifugal device is arranged below the separation and clarification device; and a water outlet device is arranged on the outer cylinder above the separating and clarifying device. Through modular design, such as a pipeline flocculation reactor, an activated carbon adding system, a centrifugal device and a separating and clarifying device, the system can be flexibly adjusted and optimized according to the characteristics and treatment requirements of different mine water, so that the adaptability and flexibility of the system are improved, and the stability and reliability of the treatment effect are ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of water treatment, and relates to a system and method for efficiently treating suspended matter in mine water. Background Art

[0002] Mine water containing suspended matter is a complex and variable treatment object. Its suspended matter components are mainly composed of coal powder and rock powder. The presence of these particles poses a challenge to the treatment and reuse of mine water. According to existing data, the mass concentration of suspended matter in mine water is widely distributed. Among them, mine water with a suspended matter mass concentration between 0 and 300 mg / L accounts for 80% of the total, which indicates that the suspended matter content of most mine water is at a relatively low level. However, there are also some mine waters with a suspended matter mass concentration exceeding 500 mg / L. Although the proportion of this part of mine water is less than 12%, its high suspended matter content puts higher requirements on the treatment process. In addition, the particle size characteristics of suspended matter are also an important factor that needs to be paid attention to in mine water treatment. Generally speaking, the particle size of suspended matter in mine water is less than 50 μm, which means that these particles have high stability and dispersibility in water and are difficult to remove by simple physical methods. With the large-scale and intelligent development of coal mining machinery, the particle size of suspended matter may be further reduced, which undoubtedly increases the difficulty of treatment. The density of suspended matter is also one of the key factors affecting the treatment effect of mine water. The density of suspended matter in mine water is generally low, usually between 1.2 t / m³ and 1.3 t / m³. This low density makes it easy for suspended matter to suspend and disperse in water, but not easy to settle. In the conventional treatment process of mine water, pre-sedimentation adjustment, coagulation, sedimentation, filtration and disinfection are indispensable steps. These steps are aimed at removing pollutants such as suspended matter, organic matter and microorganisms in mine water by physical and chemical methods to ensure the safety and stability of water quality. Among them, coagulation is a key step. It uses coagulants to aggregate suspended matter particles into larger flocs, which is convenient for subsequent sedimentation and filtration. The commonly used coagulant is polyaluminum chloride (PAC), which has the advantages of high efficiency, low toxicity and easy operation. The coagulant aid polyacrylamide (PAM) is often used to enhance the coagulation effect and improve the removal rate of suspended matter. However, the dosage of coagulant and coagulant aid needs to be accurately adjusted according to the content of suspended matter in mine water to ensure a balance between treatment effect and economy.

[0003] Although conventional treatment processes play an important role in mine water treatment, they also have some shortcomings. For example, conventional processes occupy a large area, take a long time to process, and cannot meet the needs of efficient and rapid removal of suspended solids. In addition, with the increasingly stringent environmental regulations and the improvement of people's awareness of water resource protection, the requirements for mine water treatment processes are also getting higher and higher. Summary of the invention

[0004] The purpose of the present invention is to solve the technical problems in the prior art that the conventional process occupies a large area, takes a long processing time, and cannot meet the needs of efficient and rapid removal of suspended matter, and to provide a mine water suspended matter removal system and method.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: In the first aspect, the present invention provides a high-efficiency treatment system for suspended matter in mine water, comprising an outer cylinder and a water inlet pipe, wherein an inner cylinder is arranged in the outer cylinder; the outlet end of the water inlet pipe passes through the outer cylinder and is arranged in the inner cylinder; a pipeline flocculation reactor is arranged on the water inlet pipe, which is used to add a coagulant to react with the inlet water during operation; the outer cylinder is connected to an activated carbon addition system and a centrifugal device; a separation and clarification device is arranged on the upper part of the outer cylinder, and the centrifugal device is arranged below the separation and clarification device; and a water outlet device is arranged on the outer cylinder above the separation and clarification device.

[0006] Further improvements are: The inner cylinder is provided with an inner cylinder mud discharge device, and the outlet end of the inner cylinder mud discharge device passes through the outer cylinder; the outer cylinder is provided with a granulation body discharge device.

[0007] The bottom of the inner cylinder is configured as a two-stage inverted cone structure with a cone angle of 45° to 60°; the bottom of the outer cylinder is configured as an inverted cone structure.

[0008] A water distribution channel is arranged above the bottommost cone structure of the inner tube for uniformly distributing water.

[0009] An inner circulation baffle is arranged in the inner cylinder, and the inner circulation baffle is parallel to the upper wall surface of the inner cylinder which is not provided with the two-stage inverted cone structure; the distance between the inner circulation baffle and the inner cylinder is 300-500 mm.

[0010] The outlet end of the activated carbon adding system is arranged above the two-stage inverted cone structure of the inner cylinder.

[0011] The separation and clarification device adopts a corrosion-resistant material mesh with a pore size of 0.1-1 μm.

[0012] The outlet end of the water inlet pipe is arranged at the bottom of the inner cylinder.

[0013] The designed flow rate of the pipeline flocculation reactor is less than 1 m / s.

[0014] In a second aspect, the present invention provides a method for efficiently treating suspended matter in mine water based on the above system, comprising: Step 1: After the mine water enters the pipeline flocculation reactor, a coagulant is added into the pipeline flocculation reactor to cause micro-flocculation and destabilization to form small-size and high-density micro-flocculates; the coagulant is polyaluminium chloride, and the dosage is less than 10 mg / L; Step 2: the mine water producing micro-flocs enters the inner cylinder, and activated carbon particles are added into the inner cylinder through an activated carbon adding system to adsorb the micro-flocs to form mother flocs. After that, the remaining micro-flocs are regularly arranged one by one on the mother flocs to form a high-density cluster; the thickness of the activated carbon particles added is greater than 1 m; Step 3: if the water output of the water outlet device decreases suddenly, a polymer coagulant is added at the outlet of the water inlet pipe; the polymer coagulant is polyacrylamide; Step 4: Open the centrifugal device. The high-density clusters are separated to the edge due to the large centrifugal force. Under the action of gravity, they settle and are naturally separated from the water flow. Step 5: the mine water after the above steps flows out from the water outlet device through the separation and clarification device; the separation and clarification device strengthens the separation of micro-flocs carried in the mine water.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The invention discloses a highly efficient treatment system for suspended matter in mine water. By means of a cleverly designed pipeline flocculation reactor, a coagulant (such as PAM) is added at the water inlet stage, which can quickly induce micro-flocculation and destabilization of suspended matter in water to form micro-flocs with small particle size but high density. Such micro-flocs are not only easy to be subsequently treated, but also significantly improve the treatment efficiency. Compared with the traditional method, the reaction time is greatly shortened, making the entire treatment process more compact and efficient. The activated carbon particles added to the system not only act as an adsorbent to remove organic matter and impurities in the water, but more importantly, in the initial stage, the activated carbon particles can adsorb these micro-flocs to form the so-called "mother flocs". This step provides a solid foundation for the subsequent floc construction, so that the remaining micro-flocs can be regularly arranged on the mother flocs, and further form high-density and structurally stable clusters. Such structured flocs not only improve the sedimentation efficiency, but also help to reduce the energy consumption in subsequent treatment. The centrifugal device located at the upper part of the outer cylinder utilizes the large centrifugal force of the high-density clusters to effectively separate them to the edge, and achieve rapid sedimentation under the action of gravity, and naturally separate from the water flow. This design not only improves the removal efficiency of suspended solids, but also ensures the clarity of the effluent water quality. At the same time, the separation and clarification device on the top serves as a secondary guarantee, further strengthening the removal of micro-flocs carried in the produced water, avoiding the potential impact of micro-flocs on the produced water quality, and ensuring the high quality of the final effluent. Since the sludge formed in the system has a high moisture content, these sludges have a high secondary utilization value after proper treatment. For example, it can be used as a soil conditioner or raw material for building materials, realizing the resource utilization of waste, which is in line with the concept of sustainable development. The system uses modular design, such as pipeline flocculation reactor, activated carbon addition system, centrifugal device and separation and clarification device, etc., which can be flexibly adjusted and optimized according to the characteristics and treatment requirements of different mine water, improving the adaptability and flexibility of the system, and ensuring the stability and reliability of the treatment effect.

[0016] Furthermore, the bottom of the inner cylinder is set to a two-stage inverted cone structure with a cone angle of 45°~60°, which helps to optimize the fluid dynamics during the sedimentation process. Under the action of gravity, the suspended particles are more likely to sink along the conical wall, reducing the diffusion of particles in the horizontal direction, thereby improving the sedimentation efficiency. At the same time, the two-stage inverted cone structure can also slow down the water flow speed to a certain extent, extend the sedimentation path of the suspended particles, and further increase the sedimentation opportunity of the particles. The bottom of the outer cylinder is also set to an inverted cone structure, which helps to reduce the accumulation of sediment at the bottom. During the sedimentation process, heavier suspended particles will settle at the bottom of the cone, and due to the guidance of the cone, these sediments will be more likely to gather toward the center and eventually be discharged through the discharge port at the bottom. This not only avoids the accumulation of sediment on the cylinder wall, reduces the difficulty of cleaning and maintenance, but also improves the continuous operation capacity of the system. The inverted cone structure design at the bottom of the inner and outer cylinders not only optimizes the sedimentation process, but also enhances the stability of the entire system. During the flow of fluid, the conical structure can better resist the impact and disturbance of the fluid, reduce the turbulence and vortex phenomenon inside the system, and thus ensure the smooth progress of the sedimentation process. This stability is essential for improving treatment efficiency and ensuring the quality of effluent water. By adopting the inverted cone structure, the bottom space of the inner and outer cylinders is more effectively utilized. Under the same volume, the conical structure can accommodate more sediment, thereby reducing the system's occupation of external space. This is particularly important for compact water treatment facilities, which helps to reduce construction costs and improve space utilization efficiency. The design of the inverted cone structure also takes into account the maintenance and cleaning needs of the system. Since the sediment mainly accumulates at the bottom of the cone, it is easy to keep the system clean and unobstructed by regularly discharging the sediment. This reduces maintenance costs, extends the service life of the system, and ensures a continuous and stable treatment effect.

[0017] Furthermore, the setting of the inner circulation baffle effectively introduces disturbance in the water flow by keeping it parallel to the upper wall of the inner cylinder and at a certain distance (300-500 mm). This disturbance promotes the circulation and mixing of the water flow, making the contact between the coagulant and the suspended particles more complete, which is conducive to accelerating the speed and efficiency of the microflocculation reaction. At the same time, this disturbance also helps to break up the larger flocs that may be formed and disperse them into smaller and more uniform microflocs, further improving the effect of subsequent treatment. The introduction of the inner circulation baffle allows the water flow to form a certain circulation path in the inner cylinder. This circulation path helps to distribute the suspended particles more evenly in the entire inner cylinder space before sedimentation, avoiding the situation of local concentration being too high or too low. This uniform distribution state not only improves the sedimentation efficiency, but also reduces the fluctuation of the treatment effect caused by uneven concentration. The distance between the inner circulation baffle (7) and the inner cylinder wall is moderate (300-500 mm), which not only ensures the smooth passage of the water flow, but also reduces the risk of sludge deposition and blockage under the baffle. This design helps keep the system unobstructed, prolongs the continuous operation time of the system, and reduces the number of shutdowns for cleaning due to sludge deposition. The setting of the internal circulation baffle not only optimizes the water flow state, but also improves the stability and reliability of the entire system. By enhancing the disturbance and mixing of the water flow and optimizing the distribution state of the suspended matter, this design makes the system more adaptable and robust when facing different water quality conditions. This helps to ensure the stability of the system and the consistency of the treatment effect during long-term operation. Since the internal circulation baffle helps to disperse the suspended matter particles into smaller micro-flocs and achieve a more uniform distribution before sedimentation, the sludge particles formed are finer and more uniform. Such fine and uniform sludge particles are easier to carry out dehydration, drying and other treatment steps in the subsequent sludge treatment process, providing better conditions for the resource utilization of sludge.

[0018] The invention discloses a method for efficiently treating suspended matter in mine water. When the mine water enters a pipeline flocculation reactor, an appropriate amount of polyaluminium chloride (PAC) is immediately added to the reactor as a coagulant. The dosage is precisely controlled within a range of less than 10 mg / L to ensure that the microflocculation reaction can be effectively induced and the burden of subsequent treatment will not be increased due to excessive dosage. Through the microflocculation destabilization process, the suspended matter particles in the mine water quickly form small-size, high-density microflocs. As an efficient coagulant, PAC can quickly reduce the concentration of suspended matter in the mine water to form microflocs that are easy to be treated subsequently. The strong adsorption capacity of activated carbon particles can quickly capture microflocs to form stable mother flocs, providing a basis for subsequent floc construction. Under the guidance of activated carbon particles, microflocs are regularly arranged on the mother flocs to form a compact structure and high-density group, thereby improving the sedimentation efficiency. Through the adsorption of activated carbon, the direct sedimentation of suspended matter particles is reduced, thereby reducing the amount of sludge generated. If the water output of the water outlet device suddenly decreases, it indicates that the system may be blocked or the treatment efficiency is reduced. At this time, a polymer coagulant, polyacrylamide (PAM), is urgently added at the outlet of the water inlet pipe to enhance the flocculation effect of the mine water and restore the normal operation of the system. The addition of polymer coagulants can quickly improve the flocculation state of the mine water, improve the treatment efficiency, and ensure the stability of the water output. By enhancing the flocculation effect, the deposition of suspended particles in the pipeline and equipment is reduced, and the blockage and failure of the system are prevented. Timely addition of polymer coagulants helps to maintain the stability of the effluent water quality and avoid the deterioration of the effluent water quality caused by system blockage. The centrifugal device can quickly separate high-density aggregates from the mine water, improving the treatment efficiency. The separation and clarification device can further remove micro-flocs and impurities in the mine water to ensure the clarity and transparency of the effluent water quality. Through the synergistic effect of multiple treatment steps, the suspended matter concentration of the mine water is significantly reduced, and the effluent water quality is significantly improved. In summary, the efficient treatment method for suspended solids in mine water achieves efficient treatment of mine water and significant improvement in effluent quality through the synergistic effects of multiple steps such as precise control of coagulant dosage, efficient use of activated carbon adsorption and floc construction, timely response to emergency treatment of polymer coagulants, efficient centrifugal separation and sedimentation, and enhanced separation, clarification and effluent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a structural schematic diagram of a high-efficiency mine water suspended matter treatment system in the present invention.

[0021] Among them: 1-water inlet pipe; 2-pipeline flocculation reactor; 3-granulation discharge device; 4-inner tube mud discharge device; 5-inner tube; 6-outer tube; 7-inner circulation baffle; 8-water outlet device; 9-separation and clarification device; 10-centrifugal device; 11-activated carbon addition system; 12-activated carbon; 13-water distribution channel. DETAILED DESCRIPTION

[0022] 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 part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings: See also Figure 1The embodiment of the present invention discloses a high-efficiency treatment system for suspended matter in mine water, comprising an outer cylinder 6 and an inlet pipe 1, wherein an inner cylinder 5 is arranged in the outer cylinder 6; the outlet end of the inlet pipe 1 passes through the outer cylinder 6 and is arranged in the inner cylinder 5, and the outlet end of the inlet pipe 1 is arranged at the bottom of the inner cylinder 5; a pipeline flocculation reactor 2 is arranged on the inlet pipe 1, and the design flow rate of the pipeline flocculation reactor 2 is less than 1 m / s, and is used to add a coagulant to react with the inlet water during operation; the outer cylinder 6 is connected to an activated carbon addition system 11 and a centrifugal device 10; a separation and clarification device 9 is arranged on the upper part of the outer cylinder 6, and the separation and clarification device 9 adopts a corrosion-resistant material net with a pore size of 0.1~1μm. The centrifugal device 10 is arranged below the separation and clarification device 9; the outer cylinder 6 is located above the separation and clarification device 9 and is provided with a water outlet device 8. The inner cylinder 5 is provided with an inner cylinder mud discharge device 4, and the outlet end of the inner cylinder mud discharge device 4 passes through the outer cylinder (6); the outer cylinder 6 is provided with a granulation body discharge device 3. The bottom of the inner cylinder 5 is set as a two-stage inverted cone structure with a cone angle of 45°~60°; the bottom of the inner cylinder is set as a two-stage inverted cone structure with a cone angle of 45°~60°, which helps to optimize the fluid dynamics characteristics during the sedimentation process. Under the action of gravity, the suspended particles are more likely to sink along the conical wall, reducing the diffusion of particles in the horizontal direction, thereby improving the sedimentation efficiency. At the same time, the two-stage inverted cone structure can also slow down the water flow speed to a certain extent, extend the sedimentation path of the suspended particles, and further increase the sedimentation opportunity of the particles. The bottom of the outer cylinder is also set as an inverted cone structure, which helps to reduce the accumulation of sediment at the bottom. During the sedimentation process, heavier suspended particles will be deposited at the bottom of the cone, and due to the guidance of the cone, these sediments will be more likely to gather toward the center and eventually be discharged through the discharge port at the bottom. This not only avoids the accumulation of sediment on the cylinder wall, reduces the difficulty of cleaning and maintenance, but also improves the continuous operation capacity of the system. The inverted cone structure design at the bottom of the inner and outer cylinders not only optimizes the sedimentation process, but also enhances the stability of the entire system. During the flow of fluid, the conical structure can better resist the impact and disturbance of the fluid, reduce the turbulence and vortex phenomenon inside the system, and thus ensure the smooth progress of the sedimentation process. This stability is essential for improving treatment efficiency and ensuring the quality of effluent water. By adopting the inverted cone structure, the bottom space of the inner and outer cylinders is more effectively utilized. Under the same volume, the conical structure can accommodate more sediment, thereby reducing the system's occupation of external space. This is particularly important for compact water treatment facilities, which helps to reduce construction costs and improve space utilization efficiency. The design of the inverted cone structure also takes into account the maintenance and cleaning needs of the system. Since the sediment mainly accumulates at the bottom of the cone, it is easy to keep the system clean and unobstructed by regularly discharging the sediment. This reduces maintenance costs, extends the service life of the system, and ensures a continuous and stable treatment effect.

[0029] The bottom of the outer cylinder 6 is set as an inverted cone structure. A water distribution channel 13 is set above the bottom cone structure of the inner cylinder 5 for uniform water distribution. The outlet end of the activated carbon addition system 11 is set above the two-stage inverted cone structure of the inner cylinder 5. An inner circulation baffle 7 is set in the inner cylinder 5, and the inner circulation baffle 7 is parallel to the upper wall of the inner cylinder 5 without the two-stage inverted cone structure; the distance between the inner circulation baffle 7 and the inner cylinder 5 is 300~500 mm. The setting of the inner circulation baffle effectively introduces disturbance in the water flow by keeping it parallel to the upper wall of the inner cylinder and at a certain distance. This disturbance promotes the circulation and mixing of the water flow, making the contact between the coagulant and the suspended particles more sufficient, which is conducive to accelerating the speed and efficiency of the microflocculation reaction. At the same time, this disturbance also helps to break up the larger flocs that may be formed, so that they are dispersed into smaller and more uniform microflocs, further improving the effect of subsequent treatment. The introduction of the inner circulation baffle allows the water flow to form a certain circulation path in the inner cylinder. This circulation path helps to distribute the suspended particles more evenly throughout the inner drum space before settling, avoiding the situation where the local concentration is too high or too low. This uniform distribution state not only improves the sedimentation efficiency, but also reduces the fluctuation of the treatment effect caused by uneven concentration. The distance between the inner circulation baffle 7 and the inner drum wall is moderate (300~500 mm), which not only ensures the smooth passage of water flow, but also reduces the risk of sludge deposition and clogging under the baffle. This design helps to keep the system unobstructed, prolong the continuous operation time of the system, and reduce the number of shutdowns and cleaning caused by sludge deposition. The setting of the inner circulation baffle not only optimizes the water flow state, but also improves the stability and reliability of the entire system. By enhancing the disturbance and mixing of the water flow and optimizing the distribution state of the suspended matter, this design makes the system more adaptable and robust when facing different water quality conditions. This helps to ensure the stability of the system and the consistency of the treatment effect during long-term operation. Since the internal circulation baffle helps to disperse the suspended particles into smaller micro-flocs and achieve a more uniform distribution before sedimentation, the formed sludge particles are finer and more uniform. Such fine and uniform sludge particles are easier to carry out dehydration, drying and other treatment steps in the subsequent sludge treatment process, providing better conditions for the resource utilization of sludge.

[0030] The invention discloses a highly efficient treatment system for suspended matter in mine water. By means of a cleverly designed pipeline flocculation reactor, a coagulant (such as PAM) is added at the water inlet stage, which can quickly induce micro-flocculation and destabilization of suspended matter in water to form micro-flocs with small particle size but high density. Such micro-flocs are not only easy to be subsequently treated, but also significantly improve the treatment efficiency. Compared with the traditional method, the reaction time is greatly shortened, making the entire treatment process more compact and efficient. The activated carbon particles added to the system not only act as an adsorbent to remove organic matter and impurities in the water, but more importantly, in the initial stage, the activated carbon particles can adsorb these micro-flocs to form the so-called "mother flocs". This step provides a solid foundation for the subsequent floc construction, so that the remaining micro-flocs can be regularly arranged on the mother flocs, and further form high-density and structurally stable clusters. Such structured flocs not only improve the sedimentation efficiency, but also help to reduce the energy consumption in subsequent treatment. The centrifugal device located at the upper part of the outer cylinder utilizes the large centrifugal force of the high-density clusters to effectively separate them to the edge, and achieve rapid sedimentation under the action of gravity, and naturally separate from the water flow. This design not only improves the removal efficiency of suspended solids, but also ensures the clarity of the effluent water quality. At the same time, the separation and clarification device on the top serves as a secondary guarantee, further strengthening the removal of micro-flocs carried in the produced water, avoiding the potential impact of micro-flocs on the produced water quality, and ensuring the high quality of the final effluent. Since the sludge formed in the system has a high moisture content, these sludges have a high secondary utilization value after proper treatment. For example, it can be used as a soil conditioner or raw material for building materials, realizing the resource utilization of waste, which is in line with the concept of sustainable development. The system uses modular design, such as pipeline flocculation reactor, activated carbon addition system, centrifugal device and separation and clarification device, etc., which can be flexibly adjusted and optimized according to the characteristics and treatment requirements of different mine water, improving the adaptability and flexibility of the system, and ensuring the stability and reliability of the treatment effect.

[0031] The present invention discloses a method for efficiently treating suspended matter in mine water, comprising: Step 1: After the mine water enters the pipeline flocculation reactor 2, a coagulant is added into the pipeline flocculation reactor 2 to cause micro-flocculation and destabilization to form small-size, high-density micro-flocculates; the coagulant is polyaluminium chloride, and the dosage is less than 10 mg / L; Step 2: The mine water that produces micro-flocs enters the inner tube 5, and activated carbon particles are added to the inner tube 5 through the activated carbon adding system 11 to adsorb the micro-flocs to form mother flocs. After that, the remaining micro-flocs are regularly arranged one by one on the mother flocs to form a high-density cluster; the thickness of the activated carbon particles added is greater than 1 m; Step three, if the water output of the water outlet device 8 drops suddenly, a polymer coagulant is added at the outlet of the water inlet pipe 1; the polymer coagulant is polyacrylamide; select suitable adding equipment, such as a metering pump, a static mixer, etc., to accurately control the addition amount of the polymer coagulant and ensure its sufficient mixing with the water flow.

[0032] Step 4, opening the centrifugal device 10, the high-density clusters are separated to the edge due to the large centrifugal force, and settle under the action of gravity, and are naturally separated from the water flow; Step 5: the mine water after the above steps flows out from the water outlet device 8 through the separation and clarification device 9; the separation and clarification device 9 strengthens the separation of micro-flocs carried in the mine water.

[0033] The invention discloses a method for efficiently treating suspended matter in mine water. When the mine water enters a pipeline flocculation reactor, an appropriate amount of polyaluminium chloride (PAC) is immediately added to the reactor as a coagulant. The dosage is precisely controlled within a range of less than 10 mg / L to ensure that the microflocculation reaction can be effectively induced and the burden of subsequent treatment will not be increased due to excessive dosage. Through the microflocculation destabilization process, the suspended matter particles in the mine water quickly form small-size, high-density microflocs. As an efficient coagulant, PAC can quickly reduce the concentration of suspended matter in the mine water to form microflocs that are easy to be treated subsequently. The strong adsorption capacity of activated carbon particles can quickly capture microflocs to form stable mother flocs, providing a basis for subsequent floc construction. Under the guidance of activated carbon particles, microflocs are regularly arranged on the mother flocs to form a compact structure and high-density group, thereby improving the sedimentation efficiency. Through the adsorption of activated carbon, the direct sedimentation of suspended matter particles is reduced, thereby reducing the amount of sludge generated. If the water output of the water outlet device suddenly decreases, it indicates that the system may be blocked or the treatment efficiency is reduced. At this time, a polymer coagulant, polyacrylamide (PAM), is urgently added at the outlet of the water inlet pipe to enhance the flocculation effect of the mine water and restore the normal operation of the system. The addition of polymer coagulants can quickly improve the flocculation state of the mine water, improve the treatment efficiency, and ensure the stability of the water output. By enhancing the flocculation effect, the deposition of suspended particles in the pipeline and equipment is reduced, and the blockage and failure of the system are prevented. Timely addition of polymer coagulants helps to maintain the stability of the effluent water quality and avoid the deterioration of the effluent water quality caused by system blockage. The centrifugal device can quickly separate high-density aggregates from the mine water, improving the treatment efficiency. The separation and clarification device can further remove micro-flocs and impurities in the mine water to ensure the clarity and transparency of the effluent water quality. Through the synergistic effect of multiple treatment steps, the suspended matter concentration of the mine water is significantly reduced, and the effluent water quality is significantly improved. In summary, the method for removing suspended solids from mine water achieves efficient treatment of mine water and significant improvement in effluent quality through the synergistic effects of multiple steps, including precise control of coagulant dosage, efficient use of activated carbon adsorption and floc construction, timely response to emergency treatment of polymer coagulants, efficient centrifugal separation and sedimentation, and enhanced separation, clarification and effluent.

[0034] The working principle of the present invention is as follows: The first stage: small particle size + high density microfloc formation Influent and coagulant addition: Mine water enters the system through the influent pipe 1, and at the same time, the coagulant PAC is added through the pipeline flocculation reactor 2. The design flow rate of the pipeline flocculation reactor 2 is less than 1m / s to ensure that the coagulant and mine water are fully mixed. The dosage of coagulant is less than 10mg / L.

[0035] Microflocculation destabilization: After the mine water is mixed with the coagulant, a microflocculation reaction occurs in the pipeline flocculation reactor to form small-sized, high-density microflocs. These microflocs have a large specific surface area, which is conducive to adsorption and agglomeration in the subsequent stages.

[0036] Inlet pipe and addition of polymer coagulant: The mine water after micro-flocculation and destabilization enters the inner tube 5 through the inlet pipe 1. The end of the inlet pipe chooses whether to add polymer coagulant according to the outlet flow. When the outlet flow drops sharply, add polymer coagulant to enhance the flocculation effect.

[0037] The second stage: agglomeration and granulation Addition of activated carbon particles: pre-treated activated carbon particles are added to the upper part of the inverted cone structure of the inner tube 5 through the activated carbon adding system 11. The thickness of the added activated carbon particles is greater than 1m to provide sufficient adsorption area.

[0038] Mother floc formation: Activated carbon particles initially adsorb micro-flocs to form mother flocs, which serve as the core for subsequent agglomeration and granulation.

[0039] Cluster formation: On the basis of the mother flocs, the remaining micro-flocs are arranged regularly one by one on the mother flocs, and form high-density clusters through adsorption and bridging. The inner circulation baffle 7 and the inverted cone structure in the inner cylinder 5 help promote the collision and combination of particles.

[0040] The third stage: solid-liquid separation Centrifugal separation: Under the action of the centrifugal device 10 provided on the upper part of the inner cylinder 5, the high-density aggregates are subjected to a large centrifugal force and are separated to the outside of the inner cylinder. The speed of the centrifugal device can be adjusted to meet different processing requirements.

[0041] Sedimentation and separation: Under the action of centrifugal force, high-density aggregates settle under gravity and are naturally separated from the water flow. These aggregates are then discharged from the bottom of the outer cylinder 6 through the granulation aggregate discharge device 3.

[0042] Stage 4: Intensive Clarification Clarification and separation: The water after centrifugal separation enters the separation and clarification system 9, which uses stainless steel mesh and other devices with a pore size of 0.1~1 micron to further enhance the clarification effect. Through the function of the clarification and separation device, the micro-flocs carried in the produced water are effectively removed.

[0043] Produced water discharge: The clean water after clarification and separation is discharged from the system through the water outlet device 8 to obtain treated mine water.

[0044] In summary, this mine water suspended matter efficient treatment system achieves efficient treatment of suspended matter in mine water through the continuous action of four stages: micro-flocculation destabilization, agglomeration granulation, solid-liquid separation and enhanced clarification.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A highly efficient system for treating suspended matter in mine water, characterized in that: The invention comprises an outer cylinder (6) and a water inlet pipe (1), wherein an inner cylinder (5) is arranged in the outer cylinder (6); the outlet end of the water inlet pipe (1) passes through the outer cylinder (6) and is arranged in the inner cylinder (5); a pipeline flocculation reactor (2) is arranged on the water inlet pipe (1) for adding a coagulant to react with the inlet water during operation; the outer cylinder (6) is connected to an activated carbon addition system (11) and a centrifugal device (10); a separation and clarification device (9) is arranged on the upper part of the outer cylinder (6), and the centrifugal device (10) is arranged below the separation and clarification device (9); and a water outlet device (8) is arranged on the upper part of the outer cylinder (6) and located above the separation and clarification device (9).

2. The efficient treatment system for suspended matter in mine water according to claim 1 is characterized in that: The inner cylinder (5) is provided with an inner cylinder mud discharge device (4), and the outlet end of the inner cylinder mud discharge device (4) passes through the outer cylinder (6); the outer cylinder (6) is provided with a granulation body discharge device (3).

3. The efficient treatment system for suspended matter in mine water according to claim 1 is characterized in that: The bottom of the inner cylinder (5) is configured as a two-stage inverted cone structure with a cone angle of 45° to 60°; and the bottom of the outer cylinder (6) is configured as an inverted cone structure.

4. The efficient treatment system for suspended matter in mine water according to claim 4 is characterized in that: A water distribution channel (13) is provided above the bottommost cone-angle structure of the inner cylinder (5) for evenly distributing water.

5. The efficient treatment system for suspended matter in mine water according to claim 4 is characterized in that: An inner circulation baffle (7) is provided in the inner cylinder (5), and the inner circulation baffle (7) is parallel to the upper wall surface of the inner cylinder (5) that is not provided with a two-stage inverted cone structure; the inner circulation baffle (7) is spaced apart from the inner cylinder (5) by a distance of 300 to 500 mm.

6. The efficient treatment system for suspended matter in mine water according to claim 4 is characterized in that: The outlet end of the activated carbon addition system (11) is arranged above the two-stage inverted cone structure of the inner cylinder (5).

7. The efficient treatment system for suspended matter in mine water according to claim 1 is characterized in that: The separation and clarification device (9) uses a corrosion-resistant material mesh with a pore size of 0.1 to 1 μm.

8. The efficient treatment system for suspended matter in mine water according to claim 1 is characterized in that: The outlet end of the water inlet pipe (1) is arranged at the bottom of the inner cylinder (5).

9. The efficient treatment system for suspended matter in mine water according to claim 1 is characterized in that: The designed flow rate of the pipeline flocculation reactor (2) is less than 1 m / s.

10. A method for efficiently treating suspended matter in mine water based on the system according to any one of claims 1 to 9, characterized in that: include: Step 1: after the mine water enters the pipeline flocculation reactor (2), a coagulant is added into the pipeline flocculation reactor (2) to cause micro-flocculation and destabilization to form small-size, high-density micro-flocculates; the coagulant is polyaluminium chloride, and the addition amount is less than 10 mg / L; Step 2: the mine water producing micro-flocs enters the inner tube (5); activated carbon particles are added into the inner tube (5) through the activated carbon adding system (11) to adsorb the micro-flocs to form mother flocs; then, the remaining micro-flocs are arranged regularly one by one on the mother flocs to form a high-density cluster; the thickness of the activated carbon particles added is greater than 1 m; Step 3: if the water output of the water output device (8) decreases suddenly, a polymer coagulant is added at the outlet of the water inlet pipe (1); the polymer coagulant is polyacrylamide; Step 4, opening the centrifugal device (10), the high-density clusters are separated to the edge due to the large centrifugal force, and settle under the action of gravity, and are naturally separated from the water flow; Step 5: the mine water obtained through the above steps flows out of the water outlet device (8) through the separation and clarification device (9); the separation and clarification device (9) strengthens the separation of micro-flocculates carried in the mine water.

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