Underground mine water treatment system and underground mine water treatment method

Abstract

The invention discloses an underground mine water treatment system and an underground mine water treatment method, an artificial dam body is transformed, a reverse osmosis membrane wall body and a water quality monitoring device are added, an underground reservoir is divided into a plurality of treatment areas for treating different pollutants along the water flow direction, and a dosing pipe is arranged at the junction of every two adjacent treatment areas. And adding chemicals into the chemical adding pipes through the chemical adding device so as to remove pollutants in each treatment area, judging whether the treated water quality meets the requirements or not according to the monitoring data of the water quality monitoring device, and if the requirements are not met, adjusting the types and the dosage of the chemicals added into one or more chemical adding pipes until the water quality meets the requirements. According to the underground mine water treatment system and the underground mine water treatment method disclosed by the invention, the water quality of the mine water does not need to be distinguished from the source, purification treatment of the mine water can be completed by using one underground reservoir, automatic control can be realized, and the purification treatment effect of the mine water is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mine water treatment and purification, and particularly relates to an underground mine water treatment system and a mine water treatment method. BACKGROUND

[0002] The coal mine underground reservoir has a purifying effect on mine water, and provides a new method for treating mine water underground. However, the underground reservoir has a closed feature, and water treatment facilities cannot be arranged in the reservoir, and the water quality of the outflow cannot be controlled, and the purification process cannot be intelligently controlled.

[0003] The Chinese patent with the publication number CN104291399A discloses a mine water treatment method in a coal mine underground reservoir. The water body in the underground reservoir is divided into a suspended matter exceeding standard water body, a heavy metal exceeding standard water body and an organic matter exceeding standard water body according to the water quality of different mine water sources entering the underground reservoir. Then, the underground reservoir is correspondingly divided into a suspended matter pollution treatment reservoir for removing suspended matter, a heavy metal pollution treatment reservoir for removing heavy metal and a reagent treatment reservoir for removing organic matter and inorganic matter by reagents. The suspended matter exceeding standard water body is introduced into the suspended matter pollution treatment reservoir, and the suspended matter exceeding standard water body is treated into qualified water body by direct filtration. The heavy metal exceeding standard water body is introduced into the heavy metal pollution treatment reservoir, and the heavy metal exceeding standard water body is treated into qualified water body by a modular water treatment method. The organic matter exceeding standard water body is introduced into the reagent treatment reservoir, and the organic matter exceeding standard water body is treated into qualified water body by adding reagents.

[0004] However, in actual application, the suspended matter, heavy metal and inorganic matter contained in the mine water may exceed the standard, and it is difficult to classify the mine water. In addition, in the prior art, multiple underground reservoirs are required to complete the purification treatment of the mine water, and the types of mine water exceeding the standard need to be distinguished at the source, and the scheme is complex, and the purification treatment method needs to be optimized. SUMMARY

[0005] The present application aims to overcome the deficiencies of the prior art, and provides an underground mine water treatment system and a mine water treatment method, which do not need to distinguish the water quality of mine water at the source, and can complete the purification treatment of mine water by using one underground reservoir, and can realize automatic control, and improve the purification treatment effect of mine water.

[0006] The technical scheme of the present application provides an underground mine water treatment system, which comprises an underground reservoir, a control device, a dosing device connected with the control device, a dosing pipe for dosing into the underground reservoir, and a water quality monitoring device connected with the control device.

[0007] The underground reservoir is divided into a plurality of treatment zones for treating different pollutants in sequence in a direction from an inflow end to an outflow end of the underground reservoir, and a plurality of the dosing pipes are arranged at the junction of two adjacent treatment zones;

[0008] The upper end of the dosing pipe is located on the ground surface, and the dosing pipe is connected to the dosing device; the lower end of the dosing pipe is located in the underground reservoir, and the lower end of each dosing pipe is provided with a water quality monitoring probe connected to the control device;

[0009] An inner artificial dam and an outer reverse osmosis membrane wall are constructed in the coal pillar dam body at the outflow end of the underground reservoir, a water pressure regulating pool for controlling the water outflow of the reverse osmosis membrane wall is formed between the reverse osmosis membrane wall and the artificial dam, and the water pressure regulating pool is provided with a first water level sensor connected to the control device;

[0010] The bottom of the artificial dam is provided with an outflow pipe for draining water into the water pressure regulating pool, and the outflow pipe is provided with an electrically controlled valve connected to the control device;

[0011] The water quality monitoring device is located outside the reverse osmosis membrane wall and is used for monitoring the water quality of the water flowing out of the reverse osmosis membrane wall.

[0012] In one of the optional technical solutions, the plurality of treatment zones in sequence include a suspended solids treatment zone, a fluoride removal treatment zone, a hardness removal treatment zone, and a salt removal treatment zone;

[0013] The dosing pipe includes a coagulant / defluorination agent dosing pipe arranged at the junction of the suspended solids treatment zone and the fluoride removal treatment zone, a hardness removal agent dosing pipe arranged at the junction of the fluoride removal treatment zone and the hardness removal treatment zone, and a salt removal agent dosing pipe arranged at the junction of the hardness removal treatment zone and the salt removal treatment zone;

[0014] The dosing device includes a coagulant dosing module connected to the coagulant / defluorination agent dosing pipe, a defluorination agent dosing module connected to the coagulant / defluorination agent dosing pipe, a hardness removal agent dosing module connected to the hardness removal agent dosing pipe, and a salt removal agent dosing module connected to the salt removal agent dosing pipe;

[0015] The water quality monitoring probe includes a turbidity monitoring probe arranged at the lower end of the coagulant / defluorination agent dosing pipe, a fluoride monitoring probe arranged at the lower end of the hardness removal agent dosing pipe, a total hardness monitoring probe arranged at the lower end of the salt removal agent dosing pipe, and a total salinity monitoring probe arranged in the water pressure regulating pool.

[0016] In an alternative, the suspended matter treatment zone, the fluoride removal treatment zone, the hardness removal treatment zone and the salt removal treatment zone are evenly distributed along the length direction of the underground reservoir, which is consistent with the water flow direction of the underground reservoir.

[0017] In an alternative, the lower end of the dosing pipe is provided with a lower end cover.

[0018] The dosing pipe is provided with a plurality of communication holes on the pipe wall in the underground reservoir.

[0019] The dosing pipe is provided with a vertical partition plate, the lower end of which is connected to the lower end cover, and the partition plate divides the dosing pipe into a first channel and a second channel which are isolated from each other, and the second channel is located on the downstream side of the first channel along the water flow direction of the underground reservoir.

[0020] The water quality monitoring probe is located at the bottom of the first channel and falls on the lower end cover, and the medicine supply pipe of the dosing device is connected to the second channel.

[0021] In an alternative, the dosing pipe comprises an upper fixed pipe and a lower lifting pipe which is in sliding connection with the upper fixed pipe, the communication holes are provided on the pipe wall of the lower lifting pipe, and the lower end cover is connected to the lower end of the lower lifting pipe.

[0022] The partition plate comprises an upper fixed plate which is in fixed connection with the upper fixed pipe and a lower lifting plate which is in fixed connection with the lower lifting pipe, and the upper end of the lower lifting plate extends into the upper fixed pipe and is in sliding connection with the upper fixed plate.

[0023] The lower lifting plate is connected with the upper fixed plate through a lifting driving mechanism.

[0024] The lifting driving mechanism is located in the first channel, and the lifting driving mechanism is in signal connection with the control device.

[0025] In an alternative, each of the treatment zones is provided with a second water level sensor which is in signal connection with the control device.

[0026] The control device controls the operation of the lifting driving mechanism according to the real-time water level data from the second water level sensor, so that the lower end of the lower lifting pipe is kept below the water level.

[0027] In an alternative, the water inlet end of the underground reservoir is provided with a water injection pipe.

[0028] In the width direction of the underground reservoir, the water injection pipe is located at the middle position of the water inlet end.

[0029] In the height direction of the underground reservoir, the water injection pipe is located in the upper half of the water inlet end and is higher than the water outlet pipe;

[0030] In the height direction of the underground reservoir, the lower end of the dosing pipe is located between the water injection pipe and the reservoir bottom plate of the underground reservoir.

[0031] In one of the optional technical solutions, among the multiple dosing pipes at the junction of each two adjacent treatment zones, one of the dosing pipes is located on the extension line of the water injection pipe, and the remaining dosing pipes are symmetrically arranged on the opposite sides of the extension line of the water injection pipe.

[0032] In one of the optional technical solutions, the reverse osmosis membrane wall is composed of multiple detachable and replaceable reverse osmosis membrane modules.

[0033] The technical scheme of the present application also provides a method for treating underground mine water, which uses the underground mine water treatment system according to any one of the above technical solutions.

[0034] The method comprises the following steps:

[0035] The dosing device is used to inject appropriate treatment reagents into the dosing pipes at the junction of each treatment zone;

[0036] According to the real-time data of the first water level sensor, the appropriate opening degree of the electric control valve is selected to keep the water level in the water pressure regulating pool stable and enable the reverse osmosis membrane wall to maintain stable water outlet;

[0037] According to the water quality monitoring data of the water quality monitoring device, the type and amount of reagents of one or more dosing pipes are adjusted until the water quality monitoring data of the water quality monitoring device meet the requirements.

[0038] The above technical scheme has the following beneficial effects:

[0039] The underground mine water treatment system and the method for treating underground mine water provided by the present application reconstruct the artificial dam body, add a reverse osmosis membrane wall and a water quality monitoring device, divide the underground reservoir into multiple treatment zones for treating different pollutants along the water flow direction, set dosing pipes at the junction of each two adjacent treatment zones, add reagents to the dosing pipes through a dosing device to remove pollutants in each treatment zone, judge whether the treated water quality meets the requirements according to the monitoring data of the water quality monitoring device, adjust the type and amount of reagents of one or more dosing pipes if the treated water quality does not meet the requirements, and continue until the water quality meets the requirements.

[0040] The present invention provides an underground mine water treatment system and a method for treating underground mine water. It eliminates the need to distinguish the water quality of mine water at the source. It can complete the purification treatment of mine water using an underground reservoir and can achieve automated control, thereby improving the purification effect of mine water. Attached Figure Description

[0041] The disclosure of this invention will become more readily understood by referring to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings:

[0042] Figure 1 This is a plan view of an underground mine water treatment system provided in an embodiment of the present invention;

[0043] Figure 2 for Figure 1 An enlarged schematic diagram of the reverse osmosis membrane wall and artificial dam area shown;

[0044] Figure 3 This is a cross-sectional schematic diagram of an underground mine water treatment system provided in an embodiment of the present invention;

[0045] Figure 4 for Figure 3 An enlarged schematic diagram of the reverse osmosis membrane wall and artificial dam area shown;

[0046] Figure 5 for Figure 3 The diagram shows the connection of the coagulant dosing module, defluoridant dosing module, hardening agent dosing module, desalination agent dosing module, coagulant / defluoridant dosing pipe, hardening agent dosing pipe, desalination agent dosing pipe, and control device.

[0047] Figure 6 This is a top view of a dosing tube provided in an embodiment of the present invention;

[0048] Figure 7 This is a cross-sectional view of a dosing tube provided in an embodiment of the present invention;

[0049] Figure 8 This is a cross-sectional view of a dosing tube provided in another embodiment of the present invention;

[0050] Figure 9 This is a schematic diagram showing the signal connections between various electrical control components and control devices in an underground mine water treatment system provided in an embodiment of the present invention. Detailed Implementation

[0051] The specific embodiments of the present application are further illustrated below with reference to the accompanying drawings. Identical parts are denoted by identical reference numerals in the drawings. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "inner" and "outer" refer to the directions towards or away from the geometric center of a particular part.

[0052] As shown in Figures 1-4 , Figure 7 and Figure 9 , an embodiment of the present application provides a mine water treatment system in a mine, which comprises a underground reservoir 1, a control device 2, a dosing device 3 connected to the control device 2, a dosing pipe 4 for dosing into the underground reservoir 1, and a water quality monitoring device 5 connected to the control device 2.

[0053] In the direction along the water inlet end 11 to the water outlet end 12 of the underground reservoir 1, the underground reservoir 1 is divided into a plurality of treatment zones 10 for treating different pollutants in sequence, and a plurality of dosing pipes 4 are arranged at the junction of adjacent two treatment zones 10.

[0054] The upper end of the dosing pipe 4 is at the ground surface, and the dosing pipe 4 is connected to the upper end of the dosing pipe 4. The lower end of the dosing pipe 4 is in the underground reservoir 1, and the lower end of each dosing pipe 4 is provided with a water quality monitoring probe 6 connected to the control device 2.

[0055] The coal pillar dam body 14 of the water outlet end 12 of the underground reservoir 1 is constructed with an inner artificial dam body 15 and an outer reverse osmosis membrane wall 16, and a water pressure regulating pool 17 for controlling the water pressure of the reverse osmosis membrane wall 16 is formed between the reverse osmosis membrane wall 16 and the artificial dam body 15, and the water pressure regulating pool 17 has a first water level sensor 171 connected to the control device 2.

[0056] The bottom of the artificial dam body 15 is provided with a water outlet pipe 18 for discharging water from the water pressure regulating pool 17, and the water outlet pipe 18 is provided with an electric control valve 181 connected to the control device 2.

[0057] The water quality monitoring device 5 is located outside the reverse osmosis membrane wall 16 and is used to monitor the water quality of the water flowing out of the reverse osmosis membrane wall 16.

[0058] The mine water treatment system provided by the present application utilizes the underground reservoir 1 formed by coal mining to purify mine water.

[0059] The mine water treatment system provided by the present application comprises a underground reservoir 1, a control device 2, a dosing device 3, a dosing pipe 4, a water quality monitoring device 5, a water quality monitoring probe 6, etc.

[0060] The underground reservoir 1 is a goaf formed during coal mining, and its length is greater than its width, which can be regarded as a rectangular or similar rectangular structure. In the length direction of the underground reservoir 1, one end of the underground reservoir 1 is defined as the water inlet end 11, and the water inlet end 11 can be arranged with a water injection pipe or a water injection port; the other end is defined as the water outlet end 12, and the water outlet end 12 can be arranged with a water outlet pipe or a water outlet port. The mine water to be treated will enter the underground reservoir 1 through the water inlet end 11 and flow out of the underground reservoir 1 from the water outlet end 12. The direction from the water inlet end 11 to the water outlet end 12 is also called the water flow direction of the underground reservoir 1.

[0061] The four sides of the underground reservoir 1 are surrounded by the coal pillar dam body, Figure 1 Only the coal pillar dam body 14 of the water outlet end 12 is shown.

[0062] The coal pillar dam body 14 of the water outlet end 12 is excavated in the middle along the width direction to form a dam body opening, which is used to construct an artificial dam body 15 and a reverse osmosis membrane wall 16. The artificial dam body 15 is constructed in the dam body opening, and the thickness of the artificial dam body 15 is less than that of the coal pillar dam body 14. The artificial dam body 15 is constructed by concrete. The inner surface of the artificial dam body 15 is substantially flush with the inner wall surface of the coal pillar dam body 14, the lower end of the artificial dam body 15 is sealingly connected with the floor of the underground reservoir 1, the upper end of the artificial dam body 15 is sealingly connected with the roof of the underground reservoir 1, and the two side surfaces of the artificial dam body 15 are sealingly connected with the wall surface of the dam body opening.

[0063] The reverse osmosis membrane wall 16 is a wall structure composed of reverse osmosis membranes. The reverse osmosis membranes can be fixed by a frame to form a wall-like structure, and then the reverse osmosis membrane wall 16 is installed in the dam body opening. The reverse osmosis membrane wall 16 is substantially flush with the outer wall surface of the coal pillar dam body 14, and the frame of the reverse osmosis membrane wall 16 is fixed in the dam body opening. Specifically, the lower end of the frame is sealingly connected with the floor of the underground reservoir 1, the upper end of the frame is sealingly connected with the roof of the underground reservoir 1, and the two side surfaces of the frame are sealingly connected with the wall surface of the dam body opening.

[0064] A certain space is formed between the reverse osmosis membrane wall 16 and the artificial dam body 15, which is a water pressure adjusting pool 17. By adjusting the water level in the water pressure adjusting pool 17, the water pressure in the water pressure adjusting pool 17 can meet the water pressure requirement of the reverse osmosis membrane outlet, so as to ensure the stable water outlet of the reverse osmosis membrane wall 16. A plurality of first water level sensors 171 are installed in the water pressure adjusting pool 17, and the plurality of first water level sensors 171 are arranged at intervals along the height direction to monitor the water level in the water pressure adjusting pool 17 and transmit the real-time water level in the water pressure adjusting pool 17 to the control device 2.

[0065] The bottom of the artificial dam 15 is provided with a water outlet pipe 18 for draining water to the water pressure regulating pool 17. The water outlet pipe 18 is provided with an electrically controlled valve 181, which is connected to the control device 2 through wires, and the opening of the electrically controlled valve 181 is adjusted by the control device 2 to adjust the amount of water outlet. The control device 2 can be a controller, a chip, a computer, a computer, etc. which can realize automatic control.

[0066] Suppose that the water level h0 in the water pressure regulating pool 17 meets the water pressure requirement of the permeable membrane water outlet, and the reverse osmosis membrane can stably outlet water. If the first water level sensor 171 detects that the current water level in the water pressure regulating pool 17 is lower than h0, it sends a signal to the control device 2, which controls the electrically controlled valve 181 to adjust the opening to increase the water outlet, until the water level in the water pressure regulating pool 17 rises to h0. If the first water level sensor 171 detects that the current water level in the water pressure regulating pool 17 is higher than h0, it sends a signal to the control device 2, which controls the electrically controlled valve 181 to adjust the opening to reduce the water outlet, until the water level in the water pressure regulating pool 17 drops to h0.

[0067] In the direction of the water flow along the underground reservoir 1, the underground reservoir 1 is sequentially divided into multiple treatment zones 10 for treating different pollutants, for example, one treatment zone 10 treats suspended solids, one treatment zone 10 treats fluoride, one treatment zone 10 treats hardening substances (such as calcium, magnesium), one treatment zone 10 treats inorganic substances (metal ions), etc. The junction of each adjacent two treatment zones 10 is arranged along the width direction with multiple dosing pipes 4. The dosing pipe 4 is used to inject the required medicament in the junction area of the two treatment zones 10. Specifically, during construction, the corresponding contour of the underground reservoir 1 on the ground surface is measured in advance, and then the contour of each treatment zone 10 and the junction contour of the treatment zones 10 are divided along the length direction, and then multiple spaced drilling holes are constructed along the junction contour on the ground surface until the drilling holes pass through the top plate of the underground reservoir 1.

[0068] A water quality monitoring probe 6 is arranged at the lower end of each dosing pipe 4, which is used to monitor the water quality in the area, such as monitoring the content of suspended solids, the content of fluoride, the content of hardening substances, the content of inorganic substances, etc. The water quality monitoring probe 6 is connected to the control device 2 through wires, which is used to transmit the monitoring information to the control device 2 for the control device 2 to judge whether the suspended solids, fluoride, hardening substances, inorganic substances, etc. in the water quality exceed the standard or not.

[0069] Then a dosing pipe 4 is fixed in each borehole. The upper end of the dosing pipe 4 is at the ground surface, and the lower end of the dosing pipe 4 extends into the underground reservoir 1, and the water quality monitoring probe 6 also extends into the underground reservoir 1 correspondingly for monitoring the water quality flowing therethrough. According to the requirement, an opening can be provided at the lower end of the dosing pipe 4 and / or an opening can be provided on the pipe wall, and water can enter the dosing pipe 4 through the opening for detection by the water quality monitoring probe 6, and the medicament can also be discharged into the water through the opening.

[0070] The dosing device 3 is at the corresponding position of the ground surface, and the dosing device 3 has a medicament pump and a medicament supply pipe connected with the medicament pump. The medicament supply pipe of the dosing device 3 is connected with the upper end of the dosing pipe 4 to supply medicament into the dosing pipe 4. The dosing device 3 can provide different medicaments to the dosing pipe 4 at the junction of each treatment area 10. According to the requirement, a plurality of dosing devices 3 can be used to provide medicaments to each group of dosing pipes 4 respectively. Of course, the dosing device 3 can be configured with a plurality of medicament storage tanks to store different medicaments, and each medicament storage tank is configured with a set of medicament pump and medicament supply pipe to provide medicament to a group of dosing pipes 4. The dosing device 3 is connected with the control device 2 through wires, and the control device 2 controls the opening and closing of the dosing device 3, and also controls the rotating speed or opening time of the medicament pump of the dosing device 3 to control the flow of the provided medicament.

[0071] The water quality monitoring device 5 is at the outside of the reverse osmosis membrane wall 16, and the liquid taking pipe of the water quality monitoring device 5 is connected with the water pipe or water pool outside the reverse osmosis membrane wall 16 for monitoring the water quality flowing out from the reverse osmosis membrane wall 16. The water quality monitoring device 5 can judge whether the suspended matter, fluoride, hardening matter, inorganic matter, etc. in the water quality is over standard or not. The water quality monitoring device 5 can adopt a plurality of sets to monitor and judge whether the suspended matter, fluoride, hardening matter, inorganic matter, etc. in the water quality is over standard or not respectively. The water quality monitoring device 5 can also include a plurality of monitoring and judging modules to monitor and judge whether the suspended matter, fluoride, hardening matter, inorganic matter, etc. in the water quality is over standard or not respectively.

[0072] The water quality monitoring device 5 is connected with the control device 2 through wires, and can transmit the monitoring and judging information to the control device 2, and the control device 2 controls the dosing device 3 to add corresponding medicament to one or more groups of dosing pipes 4 according to the judging information from the water quality monitoring device 5, and stops adjusting the dosing when the water quality monitored by the water quality monitoring device 5 meets the requirement.

[0073] According to the investigation summary, the mine water has its own characteristics, usually high suspended solids content, high mineralization (inorganic salt), high hardness, high fluoride content, and extremely low heavy metal and organic matter content, which do not need to be treated. Therefore, according to the water quality characteristics of the mine water into the reservoir, multiple functional areas for different treatment objects can be set in the underground reservoir. If the mine water quality is poor, the underground reservoir can be divided into four first treatment areas 10. The first treatment area 10 mainly removes the suspended solids and other colloidal substances in the mine water, and according to the research results, the removal of suspended solids in the mine water by the coal mine underground reservoir mainly concentrates in the first quarter, and the removal rate can reach more than 95, so the length of the first treatment area 10 can be selected as 1 / 4 of the total length L of the underground reservoir 1. The second treatment area 10 is a defluorination area, which mainly removes the fluoride in the mine water. The third treatment area 10 is a hardness removal area, which mainly removes the calcium and magnesium ions in the mine water. The fourth treatment area 10 is a salt removal area, which mainly removes the inorganic ions in the mine water and reduces the mineralization. If the mine water quality is good, whether to set a defluorination area and a hardness removal area can be selected, such as when the fluoride content is low, the hardness removal area can not be set; and usually the suspended solids and inorganic salt content in the mine water is high, so the suspended solids removal area and the salt removal area must be set.

[0074] Taking the setting of four first treatment areas 10 as an example: the multiple dosing pipes 4 at the junction of the first treatment area 10 and the second treatment area 10 are the first group of dosing pipes 4. The multiple dosing pipes 4 at the junction of the second treatment area 10 and the third treatment area 10 are the second group of dosing pipes 4. The multiple dosing pipes 4 at the junction of the third treatment area 10 and the fourth treatment area 10 are the third group of dosing pipes 4.

[0075] The water quality monitoring probe 6 in the first group of dosing pipes 4 is used to monitor the suspended solids content in the water flowing through, and transmit the data to the control device 2. If the control device 2 judges that the suspended solids in the water exceed the standard, a certain amount of coagulant is added to the first group of dosing pipes 4 through the dosing device 3, which can select one or both of PAC and PAM, to promote the flocculation and sedimentation of suspended solids. Since the first treatment area 10 has good effect on treating suspended solids, it is not necessary to specially set a dosing pipe 4 at the source of the first treatment area 10. The first group of dosing pipes 4 at the rear boundary of the first treatment area 10 add the suspended solids removal agent, and the long water flow path behind is sufficient to ensure the sedimentation time of the suspended solids.

[0076] The water quality monitoring probe 6 in the second group of dosing pipes 4 is used to monitor the fluoride content in the water flowing through, and transmit the data to the control device 2. If the control device 2 judges that the fluoride in the water exceeds the standard, a certain amount of defluorination agent is added to the first group of dosing pipes 4 through the dosing device 3, to promote the removal of fluoride in the water quality. The first group of dosing pipes 4 is at the source of the defluorination area, and the defluorination agent is added from the source, which is sufficient to ensure the reaction of the defluorination agent with the fluoride to remove the fluoride.

[0077] The water quality monitoring probe 6 in the third group of dosing pipes 4 is used to monitor the hardness content in the water flowing therethrough and transmit data to the control device 2. If the control device 2 determines that the hardness in the water exceeds the standard, a certain amount of hardness removal agent is added to the second group of dosing pipes 4 by the dosing device 3. Since the magnesium ion content in the mine water is low, the hardness removal agent can be sodium carbonate to facilitate the removal of calcium ion-containing hardness in the water. The second group of dosing pipes 4 is at the source of the hardness removal zone, and the hardness removal agent is added at the source to ensure that the hardness removal agent reacts with the hardness to remove the hardness.

[0078] According to the needs, a group of water quality monitoring probes 6 can be arranged in the outlet pipe 18 or the water pressure regulating tank 17 to monitor the inorganic salt content in the water flowing therethrough and transmit data to the control device 2. If the control device 2 determines that the inorganic salt in the water exceeds the standard, a certain amount of salt removal agent is added to the third group of dosing pipes 4 by the dosing device 3 to facilitate the removal of inorganic salt in the water. The salt removal agent is a content in the prior art, which is not described in detail here. The third group of dosing pipes 4 is at the source of the salt removal zone, and the salt removal agent is added at the source to ensure that the salt removal agent reacts with the inorganic salt to remove the salt.

[0079] For example, if the water quality monitoring device 5 determines that the suspended solids in the water flowing out of the reverse osmosis membrane wall 16 still exceed the standard, the control device 2 controls the dosing device 3 to add a certain amount of coagulant to the first group of dosing pipes 4. The dosage of the coagulant can be pre-set or calculated. After the injection of the agent is completed, the injection is stopped and observed for a period of time. After a period of time, if the water quality monitoring device 5 monitors that the suspended solids in the water meet the requirements, it indicates that the previous adjustment of the agent meets the requirements and no further injection is needed. If after a period of time, the water quality monitoring device 5 monitors that the suspended solids in the water still exceed the standard, it indicates that the previous dosage of the agent needs to be continuously adjusted and the injection is continued. Such operation is continued until the water quality monitoring device 5 monitors that the suspended solids in the water meet the requirements.

[0080] If the water quality monitoring device 5 determines that the fluoride in the water flowing out of the reverse osmosis membrane wall 16 still exceeds the standard, the control device 2 controls the dosing device 3 to add a certain amount of fluoride removal agent to the first group of dosing pipes 4. The dosage of the fluoride removal agent can be pre-set or calculated by using conventional techniques. After the injection of the agent is completed, the injection is stopped and observed for a period of time. After a period of time, if the water quality monitoring device 5 monitors that the fluoride in the water meets the requirements, it indicates that the previous adjustment of the agent meets the requirements and no further injection is needed. If after a period of time, the water quality monitoring device 5 monitors that the fluoride in the water still exceeds the standard, it indicates that the previous dosage of the agent needs to be continuously adjusted and the injection is continued. Such operation is continued until the water quality monitoring device 5 monitors that the fluoride in the water meets the requirements.

[0081] If the water quality monitoring device 5 judges that the hardness in the water flowing out from the reverse osmosis membrane wall 16 exceeds the standard, the control device 2 controls the dosing device 3 to add hardness-removing agent into the second group of dosing pipes 4. The dosage of the hardness-removing agent can be pre-set or calculated by using conventional techniques. After the injection of the agent is completed, the injection is stopped and a period of time is observed. After the period of time, if the water quality monitoring device 5 monitors that the hardness in the water meets the requirement, it indicates that the previous adjustment of the agent meets the requirement and no further injection is needed. If after the period of time, the water quality monitoring device 5 monitors that the hardness in the water still exceeds the standard, it indicates that the previous dosage of the agent needs to be continuously adjusted and the injection is continued. The operation is continued until the water quality monitoring device 5 monitors that the hardness in the water meets the requirement.

[0082] If the water quality monitoring device 5 judges that the inorganic substance in the water flowing out from the reverse osmosis membrane wall 16 still exceeds the standard, the control device 2 controls the dosing device 3 to add salt-removing agent into the third group of dosing pipes 4. The dosage of the salt-removing agent can be pre-set or calculated by using conventional techniques. After the injection of the agent is completed, the injection is stopped and a period of time is observed. After the period of time, if the water quality monitoring device 5 monitors that the hardness in the water meets the requirement, it indicates that the previous adjustment of the agent meets the requirement and no further injection is needed. If after the period of time, the water quality monitoring device 5 monitors that the salt content in the water still exceeds the standard, it indicates that the previous dosage of the agent needs to be continuously adjusted and the injection is continued. The operation is continued until the water quality monitoring device 5 monitors that the salt content in the water meets the requirement.

[0083] In summary, the underground mine water treatment system provided by the application divides the underground reservoir 1 into multiple treatment areas 10 for treating different pollutants along the water flow direction, sets the dosing pipes 4 at the junction of each adjacent two treatment areas 10, adds agents into the dosing pipes 4 by the dosing device 3 to remove the pollutants in the treatment areas 10, judges whether the treated water quality meets the requirement according to the monitoring data of the water quality monitoring device 5, adjusts the type and dosage of the agent added into one or more dosing pipes 4 if the requirement is not met, and continues until the water quality meets the requirement.

[0084] The underground mine water treatment system provided by the application does not need to distinguish the water quality of the mine water from the source, can complete the purification treatment of the mine water by using one underground reservoir 1, and can realize automatic control, thereby improving the purification treatment effect of the mine water.

[0085] In one embodiment, as shown in FIG. 1, the underground reservoir 1 is divided into four treatment areas 10, and the dosing pipes 4 are set at the junction of each adjacent two treatment areas 10. Figure 1 、 Figure 3 、 Figure 5 and Figure 9As shown, the plurality of treatment zones 10 includes, in sequence, a suspended substance treatment zone 10-1, a fluoride removal treatment zone 10-2, a hardness removal treatment zone 10-3, and a salt removal treatment zone 10-4.

[0086] The dosing pipe 4 includes a coagulant / fluorine removal agent dosing pipe 4-1 arranged at the junction of the suspended substance treatment zone 10-1 and the fluoride removal treatment zone 10-2, a hardness removal agent dosing pipe 4-2 arranged at the junction of the fluoride removal treatment zone 10-2 and the hardness removal treatment zone 10-3, and a salt removal agent dosing pipe 4-3 arranged at the junction of the hardness removal treatment zone 10-3 and the salt removal treatment zone 10-4.

[0087] The dosing device 3 includes a coagulant dosing module 3-1 connected to the coagulant / fluorine removal agent dosing pipe 4-1, a fluoride removal agent dosing module 3-2 connected to the coagulant / fluorine removal agent dosing pipe 4-1, a hardness removal agent dosing module 3-3 connected to the hardness removal agent dosing pipe 4-2, and a salt removal agent dosing module 3-4 connected to the salt removal agent dosing pipe 4-3.

[0088] The water quality monitoring probe 6 includes a turbidity monitoring probe 6-1 arranged at the lower end of the coagulant / fluorine removal agent dosing pipe 4-1, a fluoride monitoring probe 6-2 arranged at the lower end of the hardness removal agent dosing pipe 4-2, a total hardness monitoring probe 6-3 arranged at the lower end of the salt removal agent dosing pipe 4-3, and a total salinity monitoring probe 6-4 arranged in the water pressure adjusting tank 17.

[0089] In this embodiment, the plurality of treatment zones 10 are sequentially divided into a suspended substance treatment zone 10-1, a fluoride removal treatment zone 10-2, a hardness removal treatment zone 10-3, and a salt removal treatment zone 10-4 along the direction of water flow.

[0090] The dosing pipe 4 is correspondingly divided into a coagulant / fluorine removal agent dosing pipe 4-1, a hardness removal agent dosing pipe 4-2, and a salt removal agent dosing pipe 4-3. The coagulant / fluorine removal agent dosing pipe 4-1 is arranged at the junction of the suspended substance treatment zone 10-1 and the fluoride removal treatment zone 10-2, and is used to inject coagulant and fluorine removal agent into the water. The hardness removal agent dosing pipe 4-2 is arranged at the junction of the fluoride removal treatment zone 10-2 and the hardness removal treatment zone 10-3, and is used to inject hardness removal agent into the water. The salt removal agent dosing pipe 4-3 is arranged at the junction of the hardness removal treatment zone 10-3 and the salt removal treatment zone 10-4, and is used to inject salt removal agent into the water.

[0091] The dosing device 3 is correspondingly divided into a coagulant dosing module 3-1, a fluoride removal agent dosing module 3-2, a hardness removal agent dosing module 3-3, and a salt removal agent dosing module 3-4. The coagulant dosing module 3-1, the fluoride removal agent dosing module 3-2, the hardness removal agent dosing module 3-3, and the salt removal agent dosing module 3-4 are independent automatic dosing mechanisms, and are respectively connected to the control device 2 to achieve automatic control.

[0092] The supply pipe of the coagulant dosing module 3-1 is connected with the coagulant / defluoridation agent dosing pipe 4-1, for injecting coagulant into the coagulant / defluoridation agent dosing pipe 4-1. The supply pipe of the defluoridation agent dosing module 3-2 is connected with the coagulant / defluoridation agent dosing pipe 4-1, for injecting defluoridation agent into the coagulant / defluoridation agent dosing pipe 4-1. The supply pipe of the hardness removal agent dosing module 3-3 is connected with the hardness removal agent dosing pipe 4-2, for injecting hardness removal agent into the hardness removal agent dosing pipe 4-2. The defluoridation agent dosing module 3-4 is connected with the defluoridation agent dosing pipe 4-3, for injecting defluoridation agent into the defluoridation agent dosing pipe 4-3.

[0093] The water quality monitoring probe 6 is correspondingly divided into turbidity monitoring probe 6-1, fluoride monitoring probe 6-2, total hardness monitoring probe 6-3 and total salinity monitoring probe 6-4. The turbidity monitoring probe 6-1 is arranged at the lower end of the coagulant / defluoridation agent dosing pipe 4-1, and is used for monitoring the content of suspended solids in water. The fluoride monitoring probe 6-2 is arranged at the lower end of the hardness removal agent dosing pipe 4-2, and is used for monitoring the content of fluoride in water. The total hardness monitoring probe 6-3 is arranged at the lower end of the defluoridation agent dosing pipe 4-3, and is used for monitoring the content of calcium-magnesium compounds in water. The total salinity monitoring probe 6-4 is arranged in the water pressure adjusting tank 17, and is used for monitoring the content of inorganic salts in water. The turbidity monitoring probe 6-1, the fluoride monitoring probe 6-2, the total hardness monitoring probe 6-3 and the total salinity monitoring probe 6-4 are respectively connected with the control device 2, and transmit the data monitored by each of them to the control device 2, so that the control device 2 judges whether the content of suspended solids, fluoride, hardening substance and inorganic salts in water exceeds the standard.

[0094] If the control device 2 judges that the content of suspended solids in water exceeds the standard after receiving the data of the turbidity monitoring probe 6-1, a certain amount of coagulant is added into the coagulant / defluoridation agent dosing pipe 4-1 through the coagulant dosing module 3-1, so as to promote the flocculation and sedimentation of suspended solids.

[0095] If the control device 2 judges that the content of fluoride in water exceeds the standard after receiving the data of the fluoride monitoring probe 6-2, a certain amount of defluoridation agent is added into the coagulant / defluoridation agent dosing pipe 4-1 through the defluoridation agent dosing module 3-2, so as to promote the removal of fluoride in water quality. If the control device 2 judges that the content of hardening substance in water exceeds the standard after receiving the data of the total hardness monitoring probe 6-3, a certain amount of hardness removal agent is added into the hardness removal agent dosing pipe 4-2 through the hardness removal agent dosing module 3-3, so as to promote the removal of calcium ion-containing hardening substance in water quality. If the control device 2 judges that the content of salt in water exceeds the standard after receiving the data of the total salinity monitoring probe 6-4, a certain amount of defluoridation agent is added into the defluoridation agent dosing pipe 4-3 through the defluoridation agent dosing module 3-4, so as to promote the removal of inorganic salt in water quality.

[0096] If the water quality monitoring device 5 judges that the suspended substance in the water flowing out of the reverse osmosis membrane wall 16 is still over the standard, the control device 2 controls the coagulant dosing module 3-1 to add a certain amount of coagulant into the coagulant / defluorination agent dosing pipe 4-1. As the foregoing operation, until the water quality monitoring device 5 monitors that the suspended substance in the water meets the requirement.

[0097] If the water quality monitoring device 5 judges that the fluoride in the water flowing out of the reverse osmosis membrane wall 16 is still over the standard, the control device 2 controls the defluorination agent dosing module 3-2 to add a certain amount of defluorination agent into the coagulant / defluorination agent dosing pipe 4-1. As the foregoing operation, until the water quality monitoring device 5 monitors that the fluoride in the water meets the requirement.

[0098] If the water quality monitoring device 5 judges that the hardening substance in the water flowing out of the reverse osmosis membrane wall 16 is over the standard, the control device 2 controls the defluorination agent dosing module 3-3 to add a certain amount of defluorination agent into the defluorination agent dosing pipe 4-2. As the foregoing operation, until the water quality monitoring device 5 monitors that the hardening substance in the water meets the requirement.

[0099] If the water quality monitoring device 5 judges that the inorganic substance in the water flowing out of the reverse osmosis membrane wall 16 is still over the standard, the control device 2 controls the defluorination agent dosing module 3-4 to add a certain amount of defluorination agent into the defluorination agent dosing pipe 4-3. As the foregoing operation, until the water quality monitoring device 5 monitors that the inorganic substance in the water meets the requirement.

[0100] In one embodiment, as shown in Figure 1 and Figure 3 The suspended substance treatment zone 10-1, the defluorination treatment zone 10-2, the defluorination treatment zone 10-3 and the defluorination treatment zone 10-4 are evenly divided along the length direction of the underground reservoir 1, and the length direction of the underground reservoir 1 is consistent with the water flow direction of the underground reservoir 1.

[0101] Suppose the total length of the underground reservoir 1 is L, the length of the suspended substance treatment zone 10-1, the defluorination treatment zone 10-2, the defluorination treatment zone 10-3 and the defluorination treatment zone 10-4 is L x 1 / 4, which meets the length of the water flow path in each treatment zone 10 and facilitates the division of the contour boundary of each treatment zone 10.

[0102] In one embodiment, as shown in Figures 6-7 The lower end of the dosing pipe 4 has a lower end cover 43.

[0103] The dosing pipe 4 has a plurality of communication holes 44 on the pipe wall in the underground reservoir 1.

[0104] The dosing pipe 4 has a vertically extending partition plate 7, the lower end of the partition plate 7 is connected with the lower end cover 43, and the partition plate 7 divides the dosing pipe 4 into a first channel 45 and a second channel 46 which are isolated from each other, and the second channel 46 is located at the downstream side of the first channel 45 in the water flow direction of the underground reservoir 1.

[0105] The water quality monitoring probe 6 is located at the bottom of the first channel 45 and falls on the lower end cover 43, and the medicine supply pipe of the dosing device 3 is connected to the second channel 46.

[0106] In this embodiment, the lower end of the dosing pipe 4 is provided with a lower end cover 43 for supporting the water quality monitoring probe 6. The lower half of the pipe wall of the dosing pipe 4 is provided with a plurality of small-diameter communication holes 44 for water passing through. The diameter of the communication holes 44 is between 0.1-3mm, which avoids large-particle impurities from entering the dosing pipe 4. According to the needs, the communication holes 44 can also be provided on the lower end cover 43, which is beneficial to the circulation of water.

[0107] In order to avoid the influence of the added medicine on the water quality monitoring probe 6, a partition plate 7 is connected in the middle of the dosing pipe 4, the lower end of the partition plate 7 is connected with the lower end cover 43, and the upper end of the partition plate 7 is flush with the upper end of the dosing pipe 4. Therefore, the partition plate 7 divides the dosing pipe 4 into a first channel 45 and a second channel 46 which are isolated from each other. When installing the dosing pipe 4, the first channel 45 and the second channel 46 are arranged in front and back, that is, the partition plate 7 is arranged along the width direction of the underground reservoir 1, the first channel 45 faces the water inlet end 11, and the second channel 46 faces away from the water inlet end 11, so that the second channel 46 is located at the downstream side of the first channel 45. The water quality monitoring probe 6 is arranged in the first channel 45 and is supported by the lower end cover 43. The medicine supply pipe of the dosing device 3 is inserted into the second channel 46. The pipe walls of the first channel 45 and the second channel 46 respectively have a plurality of communication holes 44.

[0108] When the dosing device 3 injects medicine into the second channel 46, the medicine will flow out through the communication holes 44 on the pipe wall of the second channel 46, and then flow downstream along the water flow. The water entering the first channel 45 is mostly or all the water flowing from the upstream, and the medicine basically does not enter the first channel 45, which does not affect the monitoring of the water quality monitoring probe 6.

[0109] In one of the embodiments, as shown in Figure 8 the dosing pipe 4 includes an upper fixed pipe 41 and a lower lifting pipe 42 which is slidingly connected with the upper fixed pipe 41, the communication holes 44 are arranged on the pipe wall of the lower lifting pipe 42, and the lower end cover 43 is connected to the lower end of the lower lifting pipe 42.

[0110] The partition plate 7 comprises an upper fixed plate 71 fixedly connected with the upper fixed pipe 41 and a lower lifting plate 72 fixedly connected with the lower lifting pipe 42. The upper end of the lower lifting plate 72 extends into the upper fixed pipe 41 and is slidingly connected with the upper fixed plate 71.

[0111] The lifting driving mechanism 8 is connected between the lower lifting plate 72 and the upper fixed plate 71 and is used to drive the lower lifting plate 72 to slide up and down.

[0112] The lifting driving mechanism 8 is in the first channel 45 and is signal-connected with the control device 2.

[0113] In the embodiment, the dosing pipe 4 is in a lifting and retracting mode to be adjusted according to the water level. Specifically, the dosing pipe 4 comprises an upper fixed pipe 41 and a lower lifting pipe 42. The pipe diameter of the lower lifting pipe 42 is smaller than that of the upper fixed pipe 41. The lower lifting pipe 42 is gap-fitted in the upper fixed pipe 41 and the lower end of the lower lifting pipe 42 extends below the upper fixed pipe 41. A plurality of communication holes 44 are arranged on the pipe wall of the lower lifting pipe 42 and a lower end cover 43 is integrally connected to the lower end of the lower lifting pipe 42. During installation, the upper fixed pipe 41 is fixed in the borehole and the lower lifting pipe 42 can be lifted to extend into the underground reservoir 1 with the water quality monitoring probe 6.

[0114] Correspondingly, the partition plate 7 comprises an upper fixed plate 71 and a lower lifting plate 72. The upper fixed plate 71 is fixedly connected to the middle of the upper fixed pipe 41 and is substantially on one diameter of the upper fixed pipe 41. The upper and lower ends of the upper fixed plate 71 are substantially flush with the upper and lower ends of the upper fixed pipe 41. The lower lifting plate 72 is fixedly connected in the lower lifting pipe 42 and is offset to one side of one diameter of the lower lifting pipe 42. The lower end of the lower lifting plate 72 is connected with the lower end cover 43 and the upper end thereof extends out of the lower lifting pipe 42 and is between the upper and lower ends of the upper fixed plate 71. The lower lifting plate 72 is on one side of the upper fixed plate 71 and the two are slidingly connected. Specifically, vertical guide rails can be arranged between the lower lifting plate 72 and the upper fixed plate 71 to guide the lifting and sliding of the lower lifting plate 72.

[0115] The lifting driving mechanism 8 is connected between the lower lifting plate 72 and the upper fixed plate 71 and is used to drive the lower lifting plate 72 to slide up and down. The lifting driving mechanism 8 is connected with the control device 2 through wires and the operation of the lifting driving mechanism 8 is controlled by the control device 2. The lifting driving mechanism 8 can be a piston mechanism, a motor lead screw mechanism or other linear driving mechanism.

[0116] The lifting driving mechanism 8 is in the first channel 45 and can avoid being corroded by the medicament and can also avoid blocking the flow of the medicament.

[0117] When the water level in the treatment area 10 of the underground reservoir 1 drops, the lower section lifting plate 72 can be driven to slide downward by the lifting driving mechanism 8, and the lower section lifting pipe 42 is moved downward, so that the water quality monitoring probe 6 is kept in water to realize the monitoring function.

[0118] In one embodiment, as shown in Figures 8-9 each treatment area 10 is provided with a second water level sensor 101 connected with the control device 2.

[0119] The control device 2 controls the lifting driving mechanism 8 to operate according to the real-time water level data from the second water level sensor 101, so that the lower end of the lower section lifting pipe 42 is kept below the water level.

[0120] In this embodiment, a plurality of second water level sensors 101 are arranged in each treatment area 10, and the plurality of second water level sensors 101 are arranged in the vertical direction to monitor the water level of the underground reservoir 1 in real time. A drill hole can be constructed downward at the top of each treatment area 10, and a detection rod provided with a plurality of second water level sensors 101 arranged in the vertical direction is inserted into the treatment area 10 to monitor the water level of the treatment area 10 in real time.

[0121] The control device 2 controls the lifting driving mechanism 8 to operate according to the real-time water level data from the second water level sensor 101, so that the lower end of the lower section lifting pipe 42 with the water quality monitoring probe 6 is kept below the water level.

[0122] Suppose the height of the underground reservoir 1 is H1, the distance from the ground surface to the top plate of the underground reservoir 1 is H2, and the current water level is H0, then the distance from the lower section lifting pipe 42 to the ground surface is greater than H1+H2-H0, which can ensure that the lower end of the lower section lifting pipe 42 with the water quality monitoring probe 6 is kept below the water level. Preferably, the distance between the lower end of the lower section lifting pipe 42 and the bottom plate of the underground reservoir 1 is about H0 / 2, which is beneficial to the rapid action of the medicament.

[0123] If the water level rises, the lifting driving mechanism 8 is driven to make the lower section lifting pipe 42 rise correspondingly; if the water level drops, the lifting driving mechanism 8 is driven to make the lower section lifting pipe 42 drop correspondingly, so that the depth of the lower end of the lower section lifting pipe 42 inserted into the water level is about H0 / 2.

[0124] In one embodiment, as shown in Figure 8 the lifting driving mechanism 8 adopts a motor screw mechanism, which includes a motor 81 and a screw rod 82, and the screw rod 82 is connected with the rotating shaft of the motor 81 through a shaft coupling. Two ear plates 73 are arranged in the vertical direction on one side of the lower section lifting plate 72, and the ear plates 73 are in the first channel 45 and have internal threaded holes. The screw rod 82 passes through the internal threaded holes of the ear plates 73 and is screwed with the ear plates 73.

[0125] The motor 81 is connected with the control device 2 through wires, and the control device 2 controls the running and stopping, forward rotation and reverse rotation of the motor 81.

[0126] When the motor 81 drives the screw rod 82 to rotate forward, the lower section lifting plate 72 is driven to move downward. When the motor 81 drives the screw rod 82 to rotate reversely, the lower section lifting plate 72 is driven to move upward.

[0127] The motor screw rod mechanism also facilitates the calculation of the moving distance of the lower section lifting plate 72 according to the thread pitch and the number of rotations.

[0128] In one embodiment, as shown in Figure 1 and Figure 3 The water inlet end 11 of the underground reservoir 1 is provided with a water injection pipe 13.

[0129] In the width direction of the underground reservoir 1, the water injection pipe 13 is located at the middle position of the water inlet end 11.

[0130] In the height direction of the underground reservoir 1, the water injection pipe 13 is located at the upper half of the water inlet end 11, and the water injection pipe 13 is higher than the water outlet pipe 18.

[0131] In the height direction of the underground reservoir 1, the lower end of the dosing pipe 4 is located between the water injection pipe 13 and the reservoir bottom plate of the underground reservoir 1.

[0132] In this embodiment, the water injection pipe 13 is arranged near the top plate side of the underground reservoir 1, and is higher than the water outlet pipe 18, which helps to promote the flow of water from the water inlet end 11 to the water outlet end 12. The water injection pipe 13 is located at the middle position of the water inlet end 11, and the water entering the underground reservoir 1 will spread to both sides, but the content of suspended solids, fluoride, hardening substances, inorganic salts, etc. is highest near the middle line position of the water injection pipe 13. Therefore, in the width direction of the underground reservoir 1, the multiple dosing pipes 4 in each group of dosing pipes 4 can be arranged in a manner of being denser in the middle and sparser on both sides, so as to better purify the mine water.

[0133] In one embodiment, as shown in Figure 1 At the junction of every two adjacent treatment zones 10, one of the multiple dosing pipes 4 is located on the extension line of the water injection pipe 13, and the remaining dosing pipes 4 are symmetrically arranged on the opposite sides of the extension line of the water injection pipe 13, ensuring that the water treatment effects on both sides of the underground reservoir 1 are basically the same.

[0134] In one embodiment, as shown in Figure 2 and Figure 4 The reverse osmosis membrane wall 16 is composed of multiple detachable and replaceable reverse osmosis membrane modules 161, so as to be replaced.

[0135] Each reverse osmosis membrane module 161 is composed of a module frame and one or more reverse osmosis membranes. The edges of the module frame are provided with male / female buckles, and adjacent module frames can be connected through the male / female buckles. The edges of the module frame are also provided with sealing rings to achieve sealing.

[0136] When the water output effect of the reverse osmosis membrane of one or more reverse osmosis membrane modules 161 is poor, the electric control valve 181 can be selected to be closed, and after the water in the water pressure adjusting pool 17 is basically discharged, a new reverse osmosis membrane module 161 is replaced to meet the water output requirement.

[0137] In combination with Figures 1-9 An embodiment of the present application provides a mine water treatment method underground, which adopts the mine water treatment system underground as described in any of the preceding embodiments.

[0138] The method comprises the following steps:

[0139] The dosing device 3 is used to inject appropriate treatment reagents into the dosing pipe 4 at the junction of each treatment area 10.

[0140] According to the real-time data of the first water level sensor 171, the appropriate opening of the electric control valve 181 is selected to keep the water level in the water pressure adjusting pool 17 stable and enable the reverse osmosis membrane wall 16 to maintain stable water output.

[0141] According to the water quality monitoring data of the water quality monitoring device 5, the type and amount of reagents of one or more dosing pipes 4 are adjusted until the water quality monitoring data of the water quality monitoring device 5 meets the requirement.

[0142] In summary, the mine water treatment method underground provided by the present application reforms the artificial dam 15 and adds the reverse osmosis membrane wall 16 and the water quality monitoring device 5, divides the underground reservoir 1 into multiple treatment areas 10 for treating different pollutants along the water flow direction, sets the dosing pipe 4 at the junction of each adjacent two treatment areas 10, adds reagents to the dosing pipe 4 through the dosing device 3 to remove the pollutants in each treatment area 10, judges whether the treated water quality meets the requirement according to the monitoring data of the water quality monitoring device 5, adjusts the type and amount of reagents of one or more dosing pipes 4 if the requirement is not met, and until the water quality meets the requirement.

[0143] The mine water treatment method underground provided by the present application does not need to distinguish the water quality of mine water from the source, can complete the purification treatment of mine water by using one underground reservoir 1, and can realize automatic control, thereby improving the purification treatment effect of mine water.

[0144] According to the need, the above technical solutions can be combined to achieve the best technical effect.

[0145] The foregoing is merely illustrative of the principles and preferred embodiments of the application. It is to be understood that numerous other variations of the details, materials and arrangements are possible within the scope of the application as delineated in the appended claims.

Claims

1. An underground mine water treatment system, characterised in that, The underground reservoir, a control device, a dosing device connected with the control device, a dosing pipe for dosing chemicals into the underground reservoir, and a water quality monitoring device connected with the control device; In the direction from the water inlet end to the water outlet end of the underground reservoir, the underground reservoir is sequentially divided into a plurality of treatment zones for treating different pollutants, and a plurality of spaced dosing pipes are arranged at the junction of adjacent treatment zones; The upper end of the dosing pipe is located on the ground surface, and the chemical supply pipe of the dosing device is connected with the upper end of the dosing pipe; the lower end of the dosing pipe is located in the underground reservoir, and the lower end of each dosing pipe is provided with a water quality monitoring probe connected with the control device; An inner artificial dam and an outer reverse osmosis membrane wall are constructed in the coal pillar dam body at the water outlet end of the underground reservoir, a water pressure regulating pool for controlling the water outlet of the reverse osmosis membrane wall is formed between the reverse osmosis membrane wall and the artificial dam, and the water pressure regulating pool is provided with a first water level sensor connected with the control device; An outlet pipe for draining water from the water pressure regulating pool is installed at the bottom of the artificial dam, and an electrically controlled valve connected with the control device is installed in the outlet pipe; The water quality monitoring device is located outside the reverse osmosis membrane wall and is used for monitoring the water quality of the water flowing out of the reverse osmosis membrane wall.

2. The downhole mine water treatment system of claim 1, wherein, The plurality of treatment zones sequentially include a suspended solids treatment zone, a fluoride removal treatment zone, a hardness removal treatment zone, and a salt removal treatment zone; The dosing pipe includes a coagulant / defluorination agent dosing pipe arranged at the junction of the suspended solids treatment zone and the fluoride removal treatment zone, a hardness removal agent dosing pipe arranged at the junction of the fluoride removal treatment zone and the hardness removal treatment zone, and a salt removal agent dosing pipe arranged at the junction of the hardness removal treatment zone and the salt removal treatment zone; The dosing device includes a coagulant dosing module connected with the coagulant / defluorination agent dosing pipe, a defluorination agent dosing module connected with the coagulant / defluorination agent dosing pipe, a hardness removal agent dosing module connected with the hardness removal agent dosing pipe, and a salt removal agent dosing module connected with the salt removal agent dosing pipe; The water quality monitoring probe includes a turbidity monitoring probe arranged at the lower end of the coagulant / defluorination agent dosing pipe, a fluoride monitoring probe arranged at the lower end of the hardness removal agent dosing pipe, a total hardness monitoring probe arranged at the lower end of the salt removal agent dosing pipe, and a total salinity monitoring probe arranged in the water pressure regulating pool.

3. The downhole mine water treatment system of claim 2, wherein, The suspended solids treatment zone, the fluoride removal treatment zone, the hardness removal treatment zone, and the salt removal treatment zone are uniformly divided along the length direction of the underground reservoir, and the length direction of the underground reservoir is consistent with the water flow direction of the underground reservoir.

4. The downhole mine water treatment system of claim 1, wherein, The lower end of the dosing pipe has a lower end cover; The dosing pipe has a plurality of communication holes on the pipe wall in the underground reservoir; The dosing pipe has a vertically extending partition plate, the lower end of the partition plate is connected with the lower end cover, the partition plate divides the dosing pipe into a first channel and a second channel which are isolated from each other, and the second channel is located on the downstream side of the first channel in the water flow direction of the underground reservoir. The water quality monitoring probe is located at the bottom of the first channel and falls on the lower end cover, and the dosing pipe of the dosing device is connected to the second channel.

5. The downhole mine water treatment system of claim 4, wherein, The dosing pipe comprises an upper fixed pipe and a lower lifting pipe in sliding connection with the upper fixed pipe, the communication hole is arranged on the pipe wall of the lower lifting pipe, and the lower end cover is connected to the lower end of the lower lifting pipe; The partition plate comprises an upper fixed plate in fixed connection with the upper fixed pipe and a lower lifting plate in fixed connection with the lower lifting pipe, the upper end of the lower lifting plate extends into the upper fixed pipe and is in sliding connection with the upper fixed plate; The lower lifting plate and the upper fixed plate are connected with a lifting driving mechanism; The lifting driving mechanism is located in the first channel, and the lifting driving mechanism is in signal connection with the control device.

6. The downhole mine water treatment system of claim 5, wherein, Each of the treatment zones is provided with a second water level sensor in signal connection with the control device; The control device controls the operation of the lifting driving mechanism according to the real-time water level data from the second water level sensor, so that the lower end of the lower lifting pipe is kept below the water level.

7. The downhole mine water treatment system of claim 1, wherein, The water inlet end of the underground reservoir is provided with a water injection pipe; In the width direction of the underground reservoir, the water injection pipe is located at the middle position of the water inlet end; In the height direction of the underground reservoir, the water injection pipe is located in the upper half of the water inlet end, and the water injection pipe is higher than the water outlet pipe; In the height direction of the underground reservoir, the lower end of the dosing pipe is located between the water injection pipe and the reservoir bottom plate of the underground reservoir.

8. The downhole mine water treatment system of claim 7, wherein, Among the plurality of dosing pipes at the junction of every two adjacent treatment zones, one of the dosing pipes is located on the extension line of the water injection pipe, and the remaining dosing pipes are symmetrically arranged on the opposite sides of the extension line of the water injection pipe.

9. The downhole mine water treatment system of claim 1, wherein, The reverse osmosis membrane wall is composed of a plurality of detachable and replaceable reverse osmosis membrane modules.

10. A method of treating mine water downhole, characterised in that, The underground mine water treatment system of any one of claims 1-9 is adopted; The method comprises the following steps: Injecting appropriate treatment reagents into the dosing pipes at the junction of each treatment zone through the dosing device; According to the real-time data of the first water level sensor, the appropriate opening of the electric control valve is selected to keep the water level in the water pressure regulating pool stable and enable the reverse osmosis membrane wall to maintain stable water outlet; According to the water quality monitoring data of the water quality monitoring device, the type and amount of dosing agent of one or more dosing pipes are adjusted until the water quality monitoring data of the water quality monitoring device meet the requirements.

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