Abandoned mining area acid wastewater treatment system

Abstract

The invention relates to the technical field of acid wastewater treatment, and provides a waste mining area acid wastewater treatment system which comprises a waste mine pit, a diversion trench, a filter tank and a sedimentation tank, the waste mine pit is used for placing waste mineral aggregates; the number of the flow guide grooves is multiple, and the multiple flow guide grooves are all communicated with the waste mine pit. The filter tank is provided with a first water inlet and a first water outlet, a water collecting pipe is arranged between the filter tank and the waste mine pit, one end of the water collecting pipe is communicated with the bottom of an inner cavity of the waste mine pit, and the other end of the water collecting pipe is communicated with the first water inlet; a filtering mechanism is arranged in the filtering tank, and raw water flows out from the first water outlet after being filtered by the filtering mechanism; a first water passing pipe is arranged between the filter tank and the sedimentation tank, one end of the first water passing pipe is communicated with an inner cavity of the filter tank, and the other end of the first water passing pipe is communicated with an inner cavity of the sedimentation tank. The method has the effect of effectively treating the acid wastewater in the abandoned mining area.

Description

Technical Field

[0001] The present application relates to the field of acid wastewater treatment technology, and in particular to an acid wastewater treatment system for abandoned mining areas. Background Art

[0002] Abandoned mining areas often contain a large number of sulfide minerals, such as pyrite and chalcopyrite. These sulfide minerals will undergo oxidation reactions under the combined action of air, water and microorganisms. For example, pyrite will generate ferrous sulfate and sulfur dioxide during the oxidation process, and further reaction will form sulfuric acid, which will cause the wastewater to become acidic. This process is particularly significant in mine water, waste rock piles and tailings ponds, and is one of the main reasons for the formation of acidic wastewater.

[0003] In addition, in abandoned mining areas, due to the exposure of ore and waste rock piles, rainwater and groundwater can easily infiltrate them. After these waters come into contact with sulfide minerals, they will dissolve the metal ions and sulfates in them, forming acidic wastewater. Especially in the rainy season, the infiltration of a large amount of rainwater will aggravate this process, leading to an increase in the discharge of acidic wastewater.

[0004] These acidic wastewaters have the hazards of lowering the pH value of water bodies, inhibiting the growth of microorganisms, poisoning aquatic organisms, acidifying the soil, affecting plant growth, and harming the human body through the food chain. Therefore, it is necessary to effectively treat the acidic wastewater in abandoned mining areas. Summary of the invention

[0005] In order to effectively treat acidic wastewater in abandoned mining areas, the present application provides an acidic wastewater treatment system for abandoned mining areas.

[0006] The present application provides an abandoned mine acid wastewater treatment system that adopts the following technical solutions: A system for treating acid wastewater in abandoned mining areas comprises an abandoned mine pit, a diversion trough, a filter tank and a sedimentation tank; the abandoned mine pit is used to place abandoned mineral materials; a plurality of diversion troughs are provided, and the plurality of diversion troughs are all connected to the abandoned mine pit; the filter tank has a first water inlet and a first water outlet, a water collecting pipe is provided between the filter tank and the abandoned mine pit, one end of the water collecting pipe is connected to the bottom of the inner cavity of the abandoned mine pit, and the other end is connected to the first water inlet; a filtering mechanism is provided in the filter tank, and raw water flows out from the first water outlet after being filtered by the filtering mechanism; a first water pipe is provided between the filter tank and the sedimentation tank, one end of the first water pipe is connected to the inner cavity of the filter tank, and the other end is connected to the inner cavity of the sedimentation tank.

[0007] By adopting the above technical solution, after the mining area is abandoned, the movable waste mineral materials are transferred to the waste mine pit, and rainwater washes the waste mineral materials to form acidic wastewater. The acidic wastewater formed by rainwater falling around the waste mine pit flows into the waste mine pit through the diversion trough, thereby collecting the acidic wastewater in the waste mine pit.

[0008] The acidic wastewater in the abandoned mine pit enters the filter tank through the water collecting pipe. After being filtered by the filter tank mechanism, it enters the sedimentation tank through the first water pipe for sedimentation treatment, thereby achieving systematic treatment of the acidic wastewater in the abandoned mining area.

[0009] Optionally, the filter tank mechanism includes multiple filter components; the filter components include a support roller, a mesh support sleeve and an organic filler, the support roller is rotatably connected to the pool wall of the filter tank, the support sleeve is sleeved outside the support roller and fixedly connected to the support roller; a filter space is defined between the inner wall of the support sleeve and the outer wall of the support roller, the organic filler is filled in the filter space, and the organic filler is used for the growth of microorganisms; multiple groups of the filter components are divided into multiple layers and arranged in the filter tank.

[0010] By adopting the above technical solution, acidic wastewater is preliminarily treated by microorganisms. After the acidic wastewater enters the filter pool through the water collecting pipe, it falls onto the filter assembly. Since the support roller is rotatably connected to the pool wall of the filter pool, the filter assembly can rotate relative to the pool wall of the filter pool. The purpose of such a setting is that in the process of acidic wastewater falling on the filter mechanism, on the one hand, since the impact force of the wastewater on the filter assembly is not completely balanced, the filter assembly will rotate to a certain extent; on the other hand, in the area where the microorganisms treat more wastewater, the weight will increase, causing the center of gravity of the filter assembly to shift. After the center of gravity shifts, the support roller rotates, and the area with increased weight rotates downward, so that the angle of the organic filler in the area where more wastewater is treated changes to a certain extent, so that the receiving surface of this part for the wastewater changes to a certain extent, thereby improving the utilization rate of microorganisms.

[0011] Optionally, the filtering mechanism further includes a filter net, and the filter net is arranged above the filtering component.

[0012] By adopting the above technical solution and adding a filter net, on the one hand, the wastewater entering the filter pool is filtered for the first time, and on the other hand, the wastewater is spread on the filter net to a certain extent and then falls onto the filter assembly below more evenly.

[0013] Optionally, the filter assembly is provided with two layers, wherein the support rollers in one layer of the filter assembly are all arranged longitudinally, and the support rollers in the other layer of the filter assembly are all arranged transversely.

[0014] By adopting the above technical solution, wastewater is filtered twice using two layers of filter components arranged vertically and horizontally, and because the two layers of filter components are arranged crisscross, wastewater falling from any position can be filtered to ensure the filtering effect.

[0015] Optionally, the filtration mechanism further includes a filtration layer, which is disposed below the filtration component. The filtration layer includes a supporting mesh plate, a limestone filler layer and an organic filler layer which are sequentially disposed from bottom to top, and the organic filler layer is used for the growth of microorganisms.

[0016] By adopting the above technical solution, the filter layer is used to perform a third filtration on the wastewater to improve the filtration effect.

[0017] Optionally, a guide plate is arranged between the filter assembly and the filter layer, the guide plate is fixedly connected to the side wall of the filter pool, and the guide plate is penetrated by a second water inlet; the supporting mesh plate is rotatably connected to the side wall of the filter pool, and the bottom wall of the filter pool is provided with a driving mechanism, and the driving mechanism is used to drive the supporting mesh plate to rotate relative to the filter pool; a first isolation plate is vertically arranged at the middle position of the supporting mesh plate, and the first isolation plate separates the area between the supporting mesh plate and the guide plate to form a symmetrically arranged first filter area and a second filter area; the first water outlet is located between the filter layer and the filter assembly; if the second water inlet is located above the first filter area, the first water outlet is located in the second filter area; if the second water inlet is located above the second filter area, the first water outlet is located in the first filter area.

[0018] By adopting the above technical solution, after the wastewater is filtered by the filter assembly, it first falls onto the guide plate, then falls from the second water inlet into the filter layer located in the first filter area, and falls below the filter layer after being filtered by the filter layer. After the liquid level rises to a certain level, it passes through the filter layer of the second filter area and enters the second filter area. Thus, the wastewater is filtered twice at the filter layer, improving the filtering effect.

[0019] After a certain period of time, the driving mechanism is started and the supporting mesh plate is driven to rotate by the driving mechanism, so that the filter layer originally in the second filter area rotates to the first filter area, the filter layer originally in the first filter area rotates to the second filter area, and the filter layers of the first filter area and the second filter area are swapped to replace the filter surface of the filter layer. On the one hand, the limestone filler and organic filler in the filter layer are fully utilized, and on the other hand, the reverse water flow is used to flush the filler to extend the service life of the filler.

[0020] Optionally, a second isolation plate is provided on the bottom wall of the filter tank, and the second isolation plate separates the area under the supporting mesh plate into a first accommodating area and a second accommodating area which are symmetrically arranged; the upper side wall of the second isolation plate is arranged opposite to the lower side wall of the first isolation plate; a water opening is opened through the second isolation plate, and the water opening is used to connect the first accommodating area with the second accommodating area; the second isolation plate is provided with a one-way valve, and the one-way valve is used to prevent water in the first accommodating area from entering the second accommodating area; the second water inlet is located above the first accommodating area, and the first water outlet is located above the second accommodating area.

[0021] By adopting the above technical solution, the space below the filter layer is divided into a first accommodation area and a second accommodation area by the second isolation plate. After passing through the filter layer located in the first filter area, the wastewater falls into the first accommodation area, and then enters the second accommodation area through the one-way valve under the action of water pressure, and enters the part of the filter layer located in the second filter area from the second accommodation area, so that the wastewater located in the first accommodation area will not flow back to the first filter area.

[0022] Optionally, the driving mechanism is arranged inside the second isolation plate.

[0023] By adopting the above technical solution, the second isolation plate is used to protect the driving mechanism to a certain extent, thereby extending the service life of the driving mechanism.

[0024] Optionally, it also includes an alkali liquid pool, which is provided with a second water pipe; the first water pipe includes a water passing section and a mixing section, one end of the water passing section is connected to the filtration pool, and the other end is connected to the mixing section, and a partition is fixed to the end of the mixing section close to the water passing section, the peripheral side of the partition is connected to the inner wall of the mixing section, and the partition is provided with a first water passing hole, and the first water passing hole is used to connect the inner cavity of the water passing section with the inner cavity of the mixing section; the inner diameter of the water passing section is smaller than the inner diameter of the mixing section, and the central axis of the water passing section and the central axis of the mixing section are parallel to each other and not coplanar; one end of the second water pipe is connected to the alkali liquid pool, and the other end is connected to The inner cavity of the mixing section is connected; the partition is penetrated by a second water hole, and the second water hole is used to connect the inner cavity of the mixing section with the inner cavity of the second water pipe; the inner diameter of the second water pipe is smaller than the inner diameter of the mixing section, the central axis of the second water pipe is parallel to and not coplanar with the central axis of the mixing section, and the central axis of the second water pipe is parallel to and not coplanar with the central axis of the water section; the water section is provided with a second delivery pump, and the second delivery pump is used to deliver the filtered wastewater in the filter pool to the mixing section; the second water pipe is provided with a booster pump, and the booster pump is used to deliver the alkali solution in the alkali solution pool to the mixing section.

[0025] Optionally, a pH detector is provided at one end of the first water pipe close to the filter tank, and the pH detector is electrically connected to the control terminal; the booster pump is electrically connected to the control terminal; an adjustment component is provided in the second water pipe, and the adjustment component is located between the partition and the booster pump; the adjustment component includes a fixed plate, a movable plate, a connecting rod and a linkage plate, the fixed plate is fixed to the inner wall of the second water pipe, and the fixed plate is penetrated by a first water hole; the movable plate has the same shape and size as the fixed plate, the movable plate is located between the fixed plate and the booster pump, and the movable plate is penetrated by a second water hole water hole; the connecting rod is fixedly connected to the surface of the movable plate away from the fixed plate and extends along the length direction of the second water pipe, the connecting rod is a square rod and is coaxial with the movable plate; the linkage plate is penetrated by a square through-hole, and the through-hole is used for the penetration of the connecting rod; the inner wall of the second water pipe is spirally provided with a plurality of sliding grooves, and the side wall of the linkage plate is correspondingly provided with a plurality of sliding blocks. When the linkage plate is subjected to pressure directed to the movable plate, the linkage plate moves toward the direction close to the movable plate and rotates around its own central axis, and the overlapping area between the second water hole and the first water hole increases.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting up a waste pit, movable waste mineral materials are transferred to the waste pit. Rainwater washes the waste mineral materials to form acidic wastewater. The acidic wastewater formed by rainwater falling around the waste pit flows into the waste pit through the diversion trough, thereby collecting the acidic wastewater in the waste pit. The acidic wastewater in the waste pit enters the filter pool through the water collecting pipe. After being filtered by the filter pool mechanism, it enters the sedimentation tank through the first water pipe for sedimentation treatment, thereby achieving systematic treatment of the acidic wastewater in the abandoned mining area; 2. By setting a filter assembly, the filter assembly includes a support roller, a mesh support sleeve and an organic filler, and the organic filler is used to provide a production carrier for microorganisms. When the acidic wastewater falls on the filter mechanism, on the one hand, the filter assembly will rotate to a certain extent because the impact force of the wastewater on the filter assembly is not completely balanced; on the other hand, in the area where the microorganisms process more wastewater, the weight will increase, causing the center of gravity of the filter assembly to shift. After the center of gravity shifts, the support roller rotates, and the area with increased weight rotates downward, so that the angle of the organic filler in the area where more wastewater is processed changes to a certain extent, thereby causing the receiving surface of this part for the wastewater to change to a certain extent, thereby improving the utilization rate of the microorganisms; 3. By setting a filter layer and setting a first isolation plate on the upper surface of the supporting mesh plate, the area above the supporting mesh plate is separated into a first filter area and a second filter area, and a second isolation plate is set on the lower surface of the supporting mesh plate to separate the area below the supporting mesh plate into a first accommodating area and a second accommodating area. On the one hand, the wastewater is filtered in two stages. On the other hand, after a certain period of time, the driving mechanism is started to interchange the filter layers of the first filter area and the second filter area, and the reverse water flow is used to flush the filler to a certain extent, thereby increasing the service life of the filter layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application.

[0028] Figure 2 It is a schematic diagram for showing the connectivity between the waste mine pit, the filtration tank and the sedimentation tank in Example 1.

[0029] Figure 3 It is a schematic diagram for showing the structure of the waste mine in Example 1.

[0030] Figure 4 It is a schematic diagram for showing the structure of the filter tank in Example 1.

[0031] Figure 5 It is a schematic diagram for showing the structure of the filter assembly in Example 1.

[0032] Figure 6 It is a structural diagram of Example 2 of the present application.

[0033] Figure 7 It is a structural diagram of Example 3 of the present application.

[0034] Figure 8 It is a schematic diagram for showing the installation position of the partition in Example 3.

[0035] Fig. 9 It is a schematic diagram for showing the structure of the partition in Example 3.

[0036] Fig.10 It is a schematic diagram for showing the structure of the adjustment component in Example 3.

[0037] Fig.11 It is a schematic diagram for showing the structure of the linkage board in Example 3.

[0038] Fig.12 It is a schematic diagram for showing the structure of the sliding groove in Example 3.

[0039] Explanation of reference numerals: 1. waste mine pit; 11. support plate; 12. collection area; 13. wastewater area; 14. through hole; 15. water collecting pipe; 16. first delivery pump; 2. diversion groove; 3. filter tank; 31. first water inlet; 32. first water outlet; 4. sedimentation tank; 41. first water pipe; 412. water passage section; 413. mixing section; 414. partition; 4141. first connecting hole; 4142. second connecting hole; 42. second delivery pump; 5. filtering mechanism; 51. filtering assembly; 511. supporting roller; 512. supporting sleeve; 513. organic filler; 514. thin rod; 515. mounting groove; 52. filter screen; 53 , filter layer; 531, support mesh plate; 532, limestone filler layer; 533, organic filler layer; 54, guide plate; 541, second water inlet; 55, driving mechanism; 56, first isolation plate; 561, first filter area; 562, second filter area; 57, second isolation plate; 571, first accommodating area; 572, second accommodating area; 573, water outlet; 574, one-way valve; 6, alkali liquid pool; 61, second water pipe; 611, sliding groove; 7, adjusting component; 71, fixed plate; 711, first water hole; 72, movable plate; 721, second water hole; 73, connecting rod; 74, linkage plate; 741, sliding block. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-12 This application is described in further detail.

[0041] The embodiment of the present application discloses a system for treating acidic wastewater in abandoned mining areas.

[0042] Example 1 Reference Figure 1 A system for treating acidic wastewater in abandoned mining areas includes an abandoned mine pit 1, a diversion trough 2, a filter tank 3 and a sedimentation tank 4.

[0043] The waste pit 1 is used to place waste minerals. The waste pit 1 is dug at a suitable location according to the terrain of the abandoned mining area, and the pit wall is supported and poured to form a concrete pit wall. After the pit wall is formed, an anti-corrosion treatment is performed. After the construction of the waste pit 1 is completed, the waste minerals are transported to the waste pit 1, so that the acidic wastewater formed by rainwater scouring the waste minerals is collected in the waste pit 1.

[0044] On the periphery of the waste mine pit 1, a plurality of diversion grooves 2 are radially excavated with the waste mine pit 1 as the center, and the plurality of diversion grooves 2 are all connected to the waste mine pit 1 to divert rainwater outside the waste mine pit 1 into the waste mine pit 1, so as to further collect acidic wastewater.

[0045] Reference Figure 2 and Figure 3A support plate 11 is installed in the waste pit 1, and the support plate 11 divides the area inside the waste pit 1 into an upper collection area 12 and a lower wastewater area 13. The support plate 11 is penetrated with a plurality of through holes 14 for wastewater to pass through.

[0046] Reference Figure 2 and Figure 4 The filter pool 3 has a first water inlet 31 and a first water outlet 32. A water collecting pipe 15 is provided between the filter pool 3 and the waste mine 1. One end of the water collecting pipe 15 is connected to the wastewater area 13, and the other end is connected to the inner cavity of the filter pool 3 through the first water inlet 31. A first delivery pump 16 is provided on the peripheral side of the water collecting pipe 15. The first delivery pump 16 is used to deliver the raw water (i.e., acidic wastewater) in the waste mine 1 to the filter pool 3 through the first water inlet 31.

[0047] A filtering mechanism 5 is provided in the filtering pool 3 , and waste water from the waste mine 1 is filtered by the filtering mechanism 5 and reaches the first water outlet 32 ​​.

[0048] A first water pipe 41 is provided between the filter tank 3 and the sedimentation tank 4. One end of the first water pipe 41 is connected to the inner cavity of the filter tank 3 through the first water outlet 32, and the other end is connected to the inner cavity of the sedimentation tank 4. The first water pipe 41 is provided with a second delivery pump 42, which is used to deliver the wastewater in the filter tank 3 to the sedimentation tank 4.

[0049] Reference Figure 3 , Figure 4 and Figure 5 The filter mechanism 5 includes a plurality of filter components 51 and a filter screen 52. The filter component 51 includes a support roller 511, a mesh support sleeve 512 and an organic filler 513. The support roller 511 is horizontally arranged and rotatably connected to the pool wall of the filter pool 3.

[0050] The support sleeve 512 is sleeved outside the support roller 511 and fixedly connected to the support roller 511 through a plurality of thin rods 514. A filtering space is defined between the inner wall of the support sleeve 512 and the outer wall of the support roller 511, and the organic filler 513 is filled in the filtering space.

[0051] The connection between the support sleeve 512 and the support roller 511 is as follows: a plurality of groups of thin rods 514 are welded and fixed to the inner wall of the support sleeve 512, the plurality of groups of thin rods 514 are arranged at intervals around the central axis of the support sleeve 512, and the plurality of thin rods 514 in each group of thin rods 514 are arranged at intervals along the length direction of the support sleeve 512. A plurality of mounting grooves 515 are provided on the peripheral side of the support roller 511, the mounting grooves 515 extend along the length direction of the support roller 511, the plurality of mounting grooves 515 are arranged at intervals around the central axis of the support roller 511, the plurality of mounting grooves 515 correspond to the plurality of groups of thin rods 514, and the mounting grooves 515 are used for inserting the ends of the thin rods 514.

[0052] In order to further prevent the organic filler 513 from falling out of the mesh of the support sleeve 512 , the inner wall of the support sleeve 512 is also connected with multiple layers of filter gauze.

[0053] The organic filler 513 includes crushed stone, sand, zeolite, etc., to provide a carrier for the microorganisms to attach.

[0054] In this embodiment, the arrangement of multiple filter components 51 is as follows: the filter components 51 are provided with two layers, wherein the support rollers 511 in one layer of filter components 51 are all horizontally arranged longitudinally and located at the same height, and the support rollers 511 in the other layer of filter components 51 are all horizontally arranged transversely and located at the same height, and the interval between adjacent filter components 51 in the same layer does not exceed 2 cm.

[0055] The filter screen 52 is arranged above the filter assembly 51, and all the filter assemblies 51 are located below the filter screen 52. Thus, the filter screen 52 is used to preliminarily filter the raw water entering the filter pool 3, and at the same time, the raw water is buffered to a certain extent, so that the raw water is spread on the filter screen 52, and then can fall onto the filter assembly 51 below the filter screen 52 more evenly.

[0056] The sedimentation tank 4 can adopt any sedimentation tank 4 in the prior art, and this application will not go into details.

[0057] The implementation principle of Example 1 is: during the construction process or after the mine area is abandoned, the waste mineral materials are transported to the waste mine pit 1, rainwater falls into the waste mine pit 1, and the waste water flows into the waste mine pit 1 from the diversion trough 2, passes through the waste mineral materials, and enters the wastewater area 13, and the wastewater area 13 collects these acidic wastewaters.

[0058] Afterwards, the first delivery pump is used to transport the acidic wastewater in the wastewater area 13 from the position of the first water inlet 31 to the top of the filter screen 52 through the water collecting pipe 15. On the one hand, the filter screen 52 performs the first filtration on the wastewater entering the filter tank 3, and on the other hand, the wastewater is spread on the filter screen 52 to a certain extent and then falls more evenly onto the filter component 51 below.

[0059] After the wastewater falls on the filter assembly 51, it passes through the support sleeve 512 and the organic filler 513, and the microorganisms attached to the organic filler 513 perform the first treatment on the acidic wastewater. In this process, on the one hand, since the impact force of the wastewater on the filter assembly 51 is not completely balanced, the filter assembly 51 will rotate to a certain extent; on the other hand, in the area where the microorganisms treat more wastewater, the weight will increase, causing the center of gravity of the filter assembly 51 to shift. After the center of gravity shifts, the support roller 511 rotates, and the area with increased weight rotates downward, causing the angle of the organic filler 513 in the area where more wastewater is treated to change to a certain extent, thereby causing the receiving surface of this part for the wastewater to change to a certain extent, thereby improving the utilization rate of the microorganisms.

[0060] Then, the filtered wastewater is transported from the first water outlet 32 ​​to the sedimentation tank 4 through the first water pipe 41 by a second delivery pump for sedimentation treatment.

[0061] Example 2 Reference Figure 6 The difference between this embodiment and embodiment 1 is that the filter mechanism 5 further includes a filter layer 53, which is arranged below the filter assembly 51. The filter layer 53 includes a support mesh plate 531, a limestone filler layer 532 and an organic filler layer 533 arranged in sequence from bottom to top, and the organic filler layer 533 is used to provide a growth carrier for microorganisms. Thus, the wastewater is filtered for the third time, and the filtering effect of the wastewater is improved.

[0062] Specifically, a guide plate 54 is arranged between the filter assembly 51 and the filter layer 53. The guide plate 54 is fixedly connected to the side wall of the filter pool 3. A second water inlet 541 is opened through the guide plate 54. After being filtered by the filter net 52 and the filter assembly 51, the waste water falls to the guide plate 54, and under the guiding effect of the guide plate 54, it falls from the second water inlet 541 to the filter layer 53 for the third filtration.

[0063] The support mesh plate 531 is rotatably connected to the side wall of the filter pool 3, and the bottom wall of the filter pool 3 is installed with a driving mechanism 55, which is used to drive the support mesh plate 531 to rotate relative to the filter pool 3. A first isolation plate 56 is vertically fixed to the middle position of the support mesh plate 531, and the first isolation plate 56 is arranged along the radial extension of the support mesh plate 531. The first isolation plate 56 separates the area between the guide plate 54 and the support mesh plate 531 to form a symmetrically arranged first filter area 561 and a second filter area 562. In this embodiment, the second water inlet 541 is located above the first filter area 561, and the first water outlet 32 ​​is located at the position of the second filter area 562. In other embodiments, the second water inlet 541 can also be located above the second filter area 562, and the first water outlet 32 ​​should be located at the position of the first filter area 561.

[0064] The second water inlet 541 is located above the first filter area 561 or above the second filter area 562 , and the first water outlet 32 ​​is located between the filter layer 53 and the filter assembly 51 .

[0065] In this embodiment, the driving mechanism 55 is a motor. In other embodiments, the driving mechanism 55 can also be any other mechanism that can drive the supporting mesh plate 531 to rotate.

[0066] Furthermore, the bottom wall of the filter tank 3 is fixedly connected with a second isolation plate 57, which separates the area below the support mesh plate 531 into a symmetrically arranged first accommodation area 571 and a second accommodation area 572. The upper side wall of the second isolation plate 57 is arranged opposite to the lower side wall of the first isolation plate 56.

[0067] The second isolation plate 57 is provided with a water port 573, which is used to connect the first accommodating area 571 and the second accommodating area 572. The second isolation plate 57 is provided with a one-way valve 574, which is used to prevent water in the first accommodating area 571 from entering the second accommodating area 572. The second water inlet 541 is located above the first accommodating area 571, and the first water outlet 32 ​​is located above the second accommodating area 572.

[0068] In this embodiment, the driving mechanism 55 is disposed inside the second isolation plate 57 , so that the second isolation plate 57 is used to provide certain protection and safeguard for the driving mechanism 55 .

[0069] The implementation principle of Example 2 is: after the wastewater is filtered by the filter assembly 51, it first falls onto the guide plate 54, then falls from the second water inlet 541 into the filter layer 53 located in the first filter area 561, and then falls into the first receiving area 571 below the filter layer 53 after being filtered by the filter layer 53.

[0070] The water in the first storage area 571 enters the second storage area 572 through the water inlet 573 and the one-way valve 574. As the amount of water accumulated in the second storage area 572 increases, the liquid level in the second storage area 572 rises and enters the second filter area 562 through the filter layer 53 above the second storage area 572.

[0071] After a certain period of time, the driving mechanism 55 is started, and the driving mechanism 55 is used to drive the supporting mesh plate 531 to rotate 180°, so that the part of the filter layer 53 previously located in the first filter area 561 rotates to the position of the second filter area 562, and the filter surface of the filter layer 53 in the second filter area 562 is replaced, so that the part of the filter layer 53 previously located in the second filter area 562 rotates to the position of the first filter area 561, and the filter surface of the filter layer 53 in the first filter area 561 is replaced, thereby, on the one hand, making full use of the limestone filler and the organic filler layer 533 of the filter layer 53, and on the other hand, using the reverse water flow to flush the filler to a certain extent, thereby extending the service life of the filler.

[0072] Example 3 Reference Figure 7 The difference between this embodiment and embodiment 1 is that the system for treating acidic wastewater in abandoned mining areas further includes an alkali solution pool 6 , and the alkali solution pool 6 is provided with a second water pipe 61 .

[0073] The first water pipe 41 includes a water passing section 412 and a mixing section 413 . One end of the water passing section 412 is connected to the filter tank 3 , and the other end is connected to the mixing section 413 .

[0074] Reference Figure 7 , Figure 8 and Fig. 9 A partition 414 is fixed to one end of the mixing section 413 near the water passing section 412, the peripheral side of the partition 414 is connected to the inner wall of the mixing section 413, and a first connecting hole 4141 is formed through the partition 414, and the first connecting hole 4141 is used to connect the inner cavity of the water passing section 412 with the inner cavity of the mixing section 413. The inner diameter of the water passing section 412 is smaller than the inner diameter of the mixing section 413, and the central axis of the water passing section 412 and the central axis of the mixing section 413 are parallel to each other and not coplanar.

[0075] One end of the second water pipe 61 is connected to the alkali liquid pool 6, and the other end is connected to the inner cavity of the mixing section 413. The partition plate 414 is penetrated with a second connecting hole 4142, and the second connecting hole 4142 is used to connect the inner cavity of the mixing section 413 with the inner cavity of the second water pipe 61. The central axis of the second water pipe 61 is parallel to the central axis of the mixing section 413 and is not coplanar, and the central axis of the second water pipe 61 is parallel to the central axis of the water section 412 and is not coplanar.

[0076] The second delivery pump 42 is provided in the water passage section 412, and is used to deliver the wastewater filtered by the filter mechanism 5 in the filter pool 3 to the mixing section 413. The second water passage pipe 61 is provided with a booster pump, and the booster pump is used to deliver the alkali solution in the alkali solution pool 6 to the mixing section 413.

[0077] Furthermore, a pH detector is provided at one end of the first water pipe 41 close to the filter tank 3, and the pH detector is electrically connected to the control terminal. The booster pump is electrically connected to the control terminal, and the pH detector sends the detection structure of the wastewater in the first water pipe 41 to the control terminal. The control terminal determines the amount of alkali solution that needs to be introduced into the second water pipe 61 according to the pH value of the wastewater in the first water pipe 41, and then introduces the alkali solution into the mixing section 413 through the booster pump and the second water pipe 61.

[0078] Reference Fig.10 An adjusting component 7 is provided at the end of the second water pipe 61 near the mixing section 413 , and the adjusting component 7 is located between the partition plate 414 and the booster pump.

[0079] The adjustment assembly 7 includes a fixed plate 71, a movable plate 72, a connecting rod 73 and a linkage plate 74. The fixed plate 71 is fixed to the inner wall of the second water pipe 61, and a plurality of first water holes 711 are provided through the fixed plate 71, and the plurality of first water holes 711 are arranged at intervals around the central axis of the fixed plate 71. The movable plate 72 has the same shape and size as the fixed plate 71, and the movable plate 72 is rotatably connected to the side of the fixed plate 71 facing the booster pump with its own central axis as the axis. The movable plate 72 is provided with a plurality of second water holes 721, and the plurality of second water holes 721 are arranged at intervals around the central axis of the movable plate 72. In this embodiment, the number and shape of the second water holes 721 are consistent with the number and shape of the first water holes 711.

[0080] The connecting rod 73 is fixedly connected to the surface of the movable plate 72 away from the fixed plate 71 and extends along the length direction of the second water pipe 61 . The connecting rod 73 is a square rod and is coaxial with the movable plate 72 .

[0081] Reference Fig.10 and Fig.11 The linkage plate 74 is located between the movable plate 72 and the booster pump. The linkage plate 74 is provided with a square hole through which the connecting rod 73 is passed.

[0082] Reference Fig.12 The inner wall of the second water pipe 61 is spirally provided with a plurality of sliding grooves 611, and the side wall of the linkage plate 74 is correspondingly provided with a plurality of sliding blocks 741. When the linkage plate 74 is subjected to pressure directed to the movable plate 72, the linkage plate 74 moves toward the interactive plate and rotates with its own central axis as the axis, and the overlapping area between the second water hole 721 and the first water hole 711 increases. The inner wall of the second water pipe 61 is embedded with a first magnet (not shown in the figure) at the end of the sliding groove 611 close to the movable plate 72, and the interior of the sliding block 741 is embedded with a second magnet (not shown in the figure), and the surface of the first magnet close to the second magnet and the surface of the second magnet close to the first magnet repel each other.

[0083] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A system for treating acidic wastewater from abandoned mining areas, characterized in that: The invention comprises a waste mine pit (1), a diversion trough (2), a filter pool (3) and a sedimentation pool (4); the waste mine pit (1) is used to place waste mineral materials; the diversion trough (2) is provided with a plurality of diversion troughs, and the ends of the plurality of diversion troughs (2) are all connected to the waste mine pit (1); the filter pool (3) has a first water inlet (31) and a first water outlet (32); a water collecting pipe (15) is provided between the filter pool (3) and the waste mine pit (1), and one end of the water collecting pipe (15) is connected to The bottom of the inner cavity of the waste mine pit (1) has one end connected to the first water inlet (31); a filtering mechanism (5) is provided in the filtering pool (3); raw water flows out from the first water outlet (32) after being filtered by the filtering mechanism (5); a first water pipe (41) is provided between the filtering pool (3) and the sedimentation pool (4); one end of the first water pipe (41) is connected to the inner cavity of the filtering pool (3), and the other end is connected to the inner cavity of the sedimentation pool (4).

2. The system for treating acidic wastewater from abandoned mining areas according to claim 1, characterized in that: The filter pool (3) mechanism comprises a plurality of filter components (51); the filter components (51) comprise a support roller (511), a mesh support sleeve (512) and an organic filler (513); the support roller (511) is rotatably connected to the pool wall of the filter pool (3); the support sleeve (512) is sleeved outside the support roller (511) and connected to the support roller (511); a filter space is defined between the inner wall of the support sleeve (512) and the outer wall of the support roller (511); the organic filler (513) is filled in the filter space; the organic filler (513) is used for the growth of microorganisms; a plurality of groups of the filter components (51) are arranged in multiple layers in the filter pool (3).

3. The system for treating acidic wastewater from abandoned mining areas according to claim 2, characterized in that: The filtering mechanism (5) further comprises a filtering net (52), wherein the filtering net (52) is arranged above the filtering assembly (51).

4. The system for treating acidic wastewater from abandoned mining areas according to claim 2 or 3, characterized in that: The filter assembly (51) is provided with two layers, wherein the support rollers (511) in one layer of the filter assembly (51) are all arranged longitudinally, and the support rollers (511) in the other layer of the filter assembly (51) are all arranged transversely.

5. The system for treating acidic wastewater from abandoned mining areas according to claim 4, characterized in that: The filtering mechanism (5) further comprises a filtering layer (53), wherein the filtering layer (53) is arranged below the filtering component (51), and the filtering layer (53) comprises a supporting mesh plate (531), a limestone filler layer (532), and an organic filler layer (533) arranged in sequence from bottom to top, wherein the organic filler layer (533) is used for the growth of microorganisms.

6. The system for treating acidic wastewater from abandoned mining areas according to claim 5, characterized in that: A guide plate (54) is provided between the filter assembly (51) and the filter layer (53); the guide plate (54) is fixedly connected to the side wall of the filter pool (3); and a second water inlet (541) is provided through the guide plate (54); the support mesh plate (531) is rotatably connected to the side wall of the filter pool (3); a driving mechanism (55) is provided on the bottom wall of the filter pool (3); the driving mechanism (55) is used to drive the support mesh plate (531) to rotate relative to the filter pool (3); a first isolation plate (56) is vertically provided at the middle of the support mesh plate (531); and the first isolation plate (56) The area between the supporting mesh plate (531) and the guide plate (54) is separated to form a first filter area (561) and a second filter area (562) which are symmetrically arranged; the first water outlet (32) is located between the filter layer (53) and the filter assembly (51); if the second water inlet (541) is located above the first filter area (561), the first water outlet (32) is located in the second filter area (562); if the second water inlet (541) is located above the second filter area (562), the first water outlet (32) is located in the first filter area (561).

7. The system for treating acidic wastewater from abandoned mining areas according to claim 6, characterized in that: The bottom wall of the filter pool (3) is provided with a second isolation plate (57), the second isolation plate (57) separating the area below the supporting mesh plate (531) into a first accommodating area (571) and a second accommodating area (572) which are symmetrically arranged; the upper side wall of the second isolation plate (57) is arranged opposite to the lower side wall of the first isolation plate (56); a water through hole (573) is formed through the second isolation plate (57), the water through hole (573) is used to connect the first accommodating area (571) with the second accommodating area (572); the second isolation plate (57) is provided with a one-way valve (574), the one-way valve (574) is used to prevent water in the first accommodating area (571) from entering the second accommodating area (572); the second water inlet (541) is located above the first accommodating area (571), and the first water outlet (32) is located above the second accommodating area (572).

8. The system for treating acidic wastewater from abandoned mining areas according to claim 7, characterized in that: The driving mechanism (55) is arranged inside the second isolation plate (57).

9. The system for treating acidic wastewater from abandoned mining areas according to claim 1, characterized in that: The alkali liquid pool (6) is provided with a second water pipe (61); the first water pipe (41) comprises a water passage section (412) and a mixing section (413); one end of the water passage section (412) is connected to the filter pool (3), and the other end is connected to the mixing section (413); a partition plate (414) is fixed to one end of the mixing section (413) close to the water passage section (412); the peripheral side of the partition plate (414) is connected to the mixing section (413); 13), the partition plate (414) is provided with a first water through hole (711), the first water through hole (711) is used to connect the inner cavity of the water through section (412) with the inner cavity of the mixing section (413); the inner diameter of the water through section (412) is smaller than the inner diameter of the mixing section (413), the central axis of the water through section (412) and the central axis of the mixing section (413) are parallel to each other and are not coplanar; one end of the second water through pipe (61) is connected to the The alkaline solution pool (6) has one end connected to the inner cavity of the mixing section (413); the partition plate (414) is provided with a second water hole (721) extending therethrough, the second water hole (721) being used to connect the inner cavity of the mixing section (413) with the inner cavity of the second water pipe (61); the inner diameter of the second water pipe (61) is smaller than the inner diameter of the mixing section (413); the central axis of the second water pipe (61) is parallel to the central axis of the mixing section (413) and The central axis of the second water pipe (61) is parallel to the central axis of the water passage section (412) and is not coplanar; the water passage section (412) is provided with a second delivery pump (42), and the second delivery pump (42) is used to deliver the wastewater filtered in the filter pool (3) to the mixing section (413); the second water pipe (61) is provided with a booster pump, and the booster pump is used to deliver the alkali solution in the alkali solution pool (6) to the mixing section (413).

10. The system for treating acidic wastewater from abandoned mining areas according to claim 9, characterized in that: A pH detector is provided at one end of the first water pipe (41) close to the filter tank (3), and the pH detector is electrically connected to the control terminal; the booster pump is electrically connected to the control terminal; an adjustment component (7) is provided in the second water pipe (61), and the adjustment component (7) is located between the partition plate (414) and the booster pump; the adjustment component (7) comprises a fixed plate (71), a movable plate (72), a connecting rod (73) and a linkage plate (74); the fixed plate (71) is fixed to the filter tank (3); The fixed plate (71) is provided with a first water hole (711) on the inner wall of the second water pipe (61); the movable plate (72) is of the same shape and size as the fixed plate (71); the movable plate (72) is rotatably connected to a side of the fixed plate (71) close to the booster pump with its own central axis as an axis; the movable plate (72) is provided with a second water hole (721); the connecting rod (73) is fixedly connected to a side of the movable plate (72) away from the fixed plate (71); The second water pipe (61) is provided on the surface of the second water pipe (61) and extends along the length direction of the second water pipe (61). The connecting rod (73) is a square rod and is coaxial with the movable plate (72). The linkage plate (74) is provided with a square hole, and the hole is used for the connecting rod (73) to be inserted. The inner wall of the second water pipe (61) is spirally provided with a plurality of sliding grooves (611). The side wall of the linkage plate (74) is correspondingly provided with a plurality of sliding blocks (741). When the linkage plate (74) is subjected to pressure directed toward the movable plate (72), the linkage plate (74) moves in a direction close to the movable plate (72) and rotates with its own central axis as an axis, and the overlapping area between the second water hole (721) and the first water hole (711) is increased. The sliding groove (611) is provided with a first magnet at an end close to the movable plate (72). The sliding block (741) is provided with a second magnet. The surface of the first magnet close to the second magnet and the surface of the second magnet close to the first magnet repel each other.

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