Groundwater extraction-reinjection circulation treatment device

Abstract

The application provides a groundwater extraction-reinjection circulating treatment device, and belongs to the technical field of groundwater treatment.The groundwater extraction-reinjection circulating treatment device comprises a groundwater extraction assembly, a pretreatment system, a biological activated carbon treatment system and a groundwater reinjection assembly.The groundwater extraction assembly is used for extracting groundwater to the ground.The pretreatment system is used for water quality pretreatment of the groundwater.The biological activated carbon treatment system is connected with the pretreatment system and is used for biological activated carbon adsorption and organic matter decomposition treatment of the pretreated groundwater.The groundwater reinjection assembly is connected with the biological activated carbon treatment system and is used for reinjecting the groundwater treated by the biological activated carbon treatment system to the ground again.The groundwater is pretreated by the pretreatment system, and the pretreated groundwater is subjected to biological activated carbon adsorption and organic matter decomposition treatment by the biological activated carbon treatment system, so that the treatment effect of the groundwater is greatly improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of groundwater treatment, and more particularly relates to a groundwater pumping-reinjection circulating treatment device. BACKGROUND

[0002] Groundwater refers to water existing in the space between rocks below the ground, and in a narrow sense, refers to water in a saturated aquifer below the groundwater level. The water quality of groundwater is easily affected by factories or other external factors and thus needs to be treated to purify the water quality.

[0003] The existing groundwater treatment includes a treatment box body, a support frame fixedly installed inside the treatment box body, a fixed shaft fixedly installed at the top end of the support frame, filter boxes rotationally connected at the two sides of the fixed shaft, filter cotton nets fixedly installed inside the filter boxes, and adjusting grooves formed at the two sides of the filter boxes. Thus, the position of the moving block can be adjusted by rotating the threaded rod, the adjusting block at the top end of the moving block is driven to adjust the position in the adjusting groove, the filter boxes are adjusted to be inclined, the surface pollutants of the filter cotton nets are moved, the filter cotton nets on the surface of the filter boxes are washed by the high-pressure rotating nozzles on the side of the connecting plate, the surface pollutants of the filter cotton nets are moved to the inside of the collecting box, the collecting pipes in the collecting box collect the pollutants to the inside of the collecting box, and the pollutants are concentrated for treatment.

[0004] However, the water quality after the above groundwater treatment still contains many organic matters and other small-particle impurities, resulting in poor groundwater treatment effect. SUMMARY

[0005] The application aims to provide a groundwater pumping-reinjection circulating treatment device to solve the technical problem of poor groundwater treatment effect in the prior art.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the application is as follows: a groundwater pumping-reinjection circulating treatment device is provided, which includes a groundwater pumping assembly, a pretreatment system, a biological activated carbon treatment system, and a groundwater reinjection assembly. The groundwater pumping assembly is used to pump groundwater to the ground. The pretreatment system is connected with the groundwater pumping assembly and is used to pretreat the water quality of the groundwater. The biological activated carbon treatment system is connected with the pretreatment system and is used to perform biological activated carbon adsorption and organic matter decomposition treatment on the pretreated groundwater. The groundwater reinjection assembly is connected with the biological activated carbon treatment system and is used to reinject the groundwater treated by the biological activated carbon treatment system into the ground again.

[0007] In combination with the above technical solution, in a possible implementation manner, the pretreatment system comprises a flocculation tank and an ozone treatment tank; the flocculation tank is connected with the groundwater extraction assembly and is used for completing flocculation of the groundwater; and the ozone treatment tank is connected with the flocculation tank and is used for ozone oxidation treatment of the flocculated groundwater.

[0008] In combination with the above technical solution, in a possible implementation manner, the biological activated carbon treatment system comprises an outer cylinder, an inner cylinder, a biological activated carbon particle layer, an inner shaft, a rotating assembly and a spraying assembly; the outer cylinder is connected with the pretreatment system and the groundwater reinjection assembly; the inner cylinder is provided with a plurality of holes on the surface and is hollow inside, and is coaxially connected in the outer cylinder; the biological activated carbon particle layer is arranged around the body of the inner cylinder; the inner shaft is coaxially fixed in the inner cylinder and penetrates the bottom of the inner cylinder and the bottom of the outer cylinder; the rotating assembly is arranged at the bottom of the outer cylinder and is used for rotating the inner shaft; and the spraying assembly is arranged in the outer cylinder and is used for pumping the groundwater in the outer cylinder to the top of the inner cylinder for annular spraying.

[0009] In combination with the above technical solution, in a possible implementation manner, the spraying assembly comprises a fixed table, an annular pipe, a plurality of spray heads and a submersible pump; the fixed table is fixedly arranged on the inner bottom wall of the outer cylinder and is rotationally connected with the inner shaft, the inner shaft is hollow, and the annular cavity that is always in communication with the inner shaft is formed in the fixed table; the annular pipe is connected at the top of the inner shaft; the spray heads are distributed on the annular pipe; and the submersible pump is arranged at the bottom of the outer cylinder and is in communication with the annular cavity.

[0010] In combination with the above technical solution, in a possible implementation manner, the inner cylinder is arranged in an inverted conical shape and gradually narrows from the top to the bottom.

[0011] In combination with the above technical solution, in a possible implementation manner, the inner shaft comprises a rotating shaft and a detachable shaft; the rotating shaft is rotationally connected at the bottom of the outer cylinder and is rotationally connected with the fixed table; the detachable shaft is fixedly connected with the inner cylinder and is inserted into the rotating shaft at the bottom; wherein, an automatic dismounting mechanism is arranged between the rotating shaft and the detachable shaft, the automatic dismounting mechanism releases the fixation between the rotating shaft and the detachable shaft when the inner cylinder is lifted upward, and the automatic dismounting mechanism automatically fixes the rotating shaft and the detachable shaft when the rotating shaft is inserted into the detachable shaft.

[0012] In combination with the above technical solution, in a possible implementation manner, an annular insertion hole is formed at the bottom of the inner cylinder for inserting the rotating shaft, a dismounting groove is formed in the inner wall of the annular insertion hole, and a fixing groove in communication with the dismounting groove is formed on the outer circumferential surface of the rotating shaft; the automatic dismounting mechanism comprises a dismounting spring and a connecting block; the dismounting spring is arranged in the dismounting groove; the connecting block is slidingly arranged at the opening of the dismounting groove, the connecting block is simultaneously inserted into the dismounting groove and the fixing groove when the dismounting spring is in a natural state, and the upper and lower surfaces of the connecting block in the fixing groove are oppositely arranged in an inclined manner.

[0013] In combination with the above technical solution, in a possible implementation manner, the automatic disassembling mechanism further comprises an extrusion rod, a moving ring, an isolation plate, an extrusion spring and a transmission assembly; the extrusion rod is slidingly arranged at the bottom of the inner cylinder, the upper surface of the connecting block is provided with an extrusion groove for inserting the extrusion rod, and the bottom of the extrusion rod and the side of the extrusion groove facing the disassembling shaft are both arranged in an inclined manner; the moving ring is slidingly sleeved on the disassembling shaft, and when the disassembling shaft is inserted into the rotating shaft, the top end of the rotating shaft pushes up the moving ring; the isolation plate is fixed between the inner cylinder and the disassembling shaft; the extrusion spring is arranged between the top of the moving ring and the isolation plate and is used for driving the moving ring to reset; and the transmission assembly is arranged between the moving ring and the extrusion rod, and when the moving ring rises, the transmission assembly drives the extrusion rod to descend, and the extrusion rod extrudes the connecting block into the fixing groove.

[0014] In combination with the above technical solution, in a possible implementation manner, the underground water extraction assembly comprises an extraction pump and an extraction water pipe; one end of the extraction pump is connected with the pretreatment system; and one end of the extraction water pipe is located in the underground water and the other end is connected with the extraction pump.

[0015] In combination with the above technical solution, in a possible implementation manner, the underground water injection assembly comprises an injection pump and an injection water pipe; one end of the injection pump is connected with the biological activated carbon treatment system; and one end of the injection water pipe is connected with the injection pump and the other end is located in the underground.

[0016] The underground water extraction-injection circulation treatment device provided by the present application has the following beneficial effects: compared with the prior art, the present application first performs water quality pretreatment on the underground water extracted by the underground water extraction assembly through the pretreatment system, so as to reduce the working burden of the subsequent biological activated carbon treatment system; the biological activated carbon treatment system performs biological activated carbon adsorption and organic matter decomposition treatment on the pretreated underground water; and finally, the treated underground water is injected into the underground, so that the underground water circulation treatment is realized and the treatment effect of the underground water is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative labor.

[0018] Figure 1 The structure diagram of the underground water extraction-injection circulation treatment device provided by the present application is shown in the figure.

[0019] Figure 2 The cross-sectional view of the biological activated carbon treatment system provided by the present application is shown in the figure.

[0020] Figure 3 The cross-sectional view of the biological activated carbon treatment system provided by the present application is shown in the figure. Figure 2Part A is a partial enlarged view showing the automatic dismounting mechanism.

[0021] In the drawings, the reference signs are as follows:

[0022] 1, groundwater extraction assembly; 11, extraction pump; 12, extraction water pipe; 2, pretreatment system; 21, flocculation tank; 22, ozone treatment tank; 3, biological activated carbon treatment system; 31, outer cylinder; 32, inner cylinder; 321, annular insertion hole; 322, dismounting groove; 33, biological activated carbon particle layer; 34, inner shaft; 341, rotating shaft; 3411, fixing groove; 342, dismounting shaft; 35, rotating assembly; 351, first gear; 352, second gear; 353, driving motor; 36, spraying assembly; 361, fixed table; 3611, annular cavity; 362, annular pipe; 363, spray head; 364, submersible pump; 4, groundwater reinjection assembly; 41, reinjection pump; 42, reinjection water pipe; 5, automatic dismounting mechanism; 51, dismounting spring; 52, connecting block; 521, extrusion groove; 53, extrusion rod; 54, moving ring; 55, isolation plate; 56, extrusion spring; 57, transmission assembly; 571, transmission rack; 572, transmission gear. DETAILED DESCRIPTION

[0023] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects more clearly, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The specific embodiments described herein are only used to explain the present application, and are not used to limit the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] It should be further pointed out that the drawings and embodiments of the present application mainly describe and explain the concept of the present application. On the basis of the concept, the specific forms and settings of some connection relationships, position relationships, power mechanisms, power supply systems, hydraulic systems and control systems are not completely described, but those skilled in the art can realize the above-mentioned specific forms and settings by using well-known ways on the premise of understanding the concept of the present application.

[0025] When an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0026] The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0027] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, and the spatial relative descriptions used herein will be interpreted accordingly.

[0028] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0029] The groundwater extraction-reinjection circulation treatment device provided by the present invention will now be described.

[0030] like Figure 1 and Figure 2 As shown, one embodiment of the present invention provides a groundwater extraction-reinjection circulation treatment device, including a groundwater extraction component 1, a pretreatment system 2, a biological activated carbon treatment system 3, and a groundwater reinjection component 4; the groundwater extraction component 1 is used to extract groundwater to the surface; the pretreatment system 2 is connected to the groundwater extraction component 1 and is used to pretreat the groundwater; the biological activated carbon treatment system 3 is connected to the pretreatment system 2 and is used to treat the pretreated groundwater with biological activated carbon adsorption and organic matter decomposition; the groundwater reinjection component 4 is connected to the biological activated carbon treatment system 3 and is used to reinject the groundwater treated by the biological activated carbon treatment system 3 back into the ground.

[0031] Compared with the prior art, the groundwater extraction-reinjection circulating treatment device provided by the embodiment first performs water quality pretreatment on the groundwater extracted by the groundwater extraction assembly 1 through the pretreatment system 2, so as to reduce the working burden of the subsequent biological activated carbon treatment system 3, the biological activated carbon treatment system 3 performs biological activated carbon adsorption and organic matter decomposition treatment on the pretreated groundwater, and finally reinjects the treated groundwater into the ground, so that the groundwater circulating treatment is realized, and the treatment effect of the groundwater is greatly improved.

[0032] As shown in Figure 1 , the present application provides a specific implementation mode as follows on the basis of the above implementation mode:

[0033] The pretreatment system 2 comprises a flocculation tank 21 and an ozone treatment tank 22; the flocculation tank 21 is connected with the groundwater extraction assembly 1 and is used for completing the flocculation process of the groundwater; and the ozone treatment tank 22 is connected with the flocculation tank 21 and is used for performing ozone oxidation treatment on the flocculation-treated groundwater.

[0034] Flocculants are poured into the flocculation tank 21, so that the particles in the groundwater are flocculated and settled, the water quality is preliminarily improved, the flocculated groundwater is then extracted into the ozone treatment tank 22, the polluted organic matters in the groundwater are decomposed by oxidation through ozone, and the remaining ozone in the water is rapidly graded by the activated carbon after entering the biological activated carbon treatment system 3, so that a large number of bacteria grow in the activated carbon, the biodegradable organic matters in the water are decomposed, and the treatment effect of the groundwater is further improved.

[0035] As shown in Figures 2-3 , the present application provides a specific implementation mode as follows on the basis of the above implementation mode:

[0036] The biological activated carbon treatment system 3 comprises an outer cylinder 31, an inner cylinder 32, a biological activated carbon particle layer 33, an inner shaft 34, a rotating assembly 35 and a spraying assembly 36; the outer cylinder 31 is connected with the pretreatment system 2 and the groundwater reinjection assembly 4; the inner cylinder 32 is provided with a plurality of pores on the surface and is hollow inside, and is coaxially and rotationally connected in the outer cylinder 31; the biological activated carbon particle layer 33 is arranged around the body of the inner cylinder 32; the inner shaft 34 is coaxially fixed in the inner cylinder 32 and penetrates the bottom of the inner cylinder 32 and the bottom of the outer cylinder 31; the rotating assembly 35 is arranged at the bottom of the outer cylinder 31 and is used for driving the inner shaft 34 to rotate; and the spraying assembly 36 is arranged in the outer cylinder 31 and is used for extracting the groundwater in the outer cylinder 31 to the top of the inner cylinder 32 for annular spraying.

[0037] The water in the ozone treatment tank 22 is pumped into the outer cylinder 31, and then sprayed to the top of the inner cylinder 32 through the spraying assembly 36, while the rotating assembly 35 drives the inner cylinder 32 to rotate through the inner shaft 34, so that the sprayed underground water can be more fully contacted with the bioactive carbon particle layer 33, and the rotating inner cylinder 32 can make the water in the bioactive carbon particle layer 33 directly splash out between the outer cylinder 31 and the inner cylinder 32, so as to reciprocate, which can improve the treatment speed and effect of the underground water.

[0038] As shown in Figures 2-3 The present application provides a specific embodiment based on the above embodiment as follows:

[0039] The spraying assembly 36 comprises a fixed table 361, an annular pipe 362, a spray head 363 and a submersible pump 364; the fixed table 361 is fixedly arranged on the inner bottom wall of the outer cylinder 31 and is rotationally connected with the inner shaft 34, the inner shaft 34 is hollow, and the fixed table 361 is provided with an annular cavity 3611 which is always in communication with the inner shaft 34; the annular pipe 362 is communicated with the top of the inner shaft 34; the spray head 363 is provided in plurality and is distributed on the annular pipe 362; and the submersible pump 364 is arranged at the bottom of the outer cylinder 31 and is communicated with the annular cavity 3611.

[0040] The submersible pump 364 pumps the underground water between the outer cylinder 31 and the inner cylinder 32 to the inner shaft 34 through the annular cavity 3611 in the fixed table 361, and then sprays it out from each spray head 363 on the annular pipe 362, which does not affect the rotation of the inner cylinder 32 and can improve the spraying efficiency of the underground water.

[0041] Further, the inner cylinder 32 is arranged in an inverted conical shape and gradually narrows from the top to the bottom, which can prolong the flow path of the underground water after being sprayed onto the bioactive carbon particle layer 33, so that the underground water can be more fully and completely passed through the bioactive carbon particle layer 33 and directly fall into the outer cylinder 31, instead of being stored in the inner cylinder 32, thereby improving the treatment efficiency of the underground water.

[0042] As shown in Figures 2-3 The present application provides a specific embodiment based on the above embodiment as follows:

[0043] The inner shaft 34 comprises a rotating shaft 341 and a dismounting shaft 342; the rotating shaft 341 is rotationally connected at the bottom of the outer cylinder 31 and is rotationally connected with the fixed table 361; the dismounting shaft 342 is fixedly connected with the inner cylinder 32 and is inserted into the rotating shaft 341 at the bottom; and an automatic dismounting mechanism 5 is arranged between the rotating shaft 341 and the dismounting shaft 342, which releases the fixation between the rotating shaft 341 and the dismounting shaft 342 when the inner cylinder 32 is lifted upward, and automatically fixes the rotating shaft 341 and the dismounting shaft 342 when the rotating shaft 341 is inserted into the dismounting shaft 342.

[0044] The automatic dismounting mechanism 5 can conveniently dismount the dismounting shaft 342 from the rotating shaft 341, so as to clean or replace the bioactive carbon particle layer 33.

[0045] Specifically, the rotating assembly 35 in the embodiment comprises a first gear 351, a second gear 352 and a driving motor 353. The first gear 351 is coaxially fixed at a position outside the bottom end of the outer cylinder 31 of the rotating shaft 341. The second gear 352 is coaxially fixed on the output shaft of the driving motor 353 and is engaged with the first gear 351. The driving motor 353 is installed below the outer cylinder 31.

[0046] As shown in Figures 2-3 The embodiment provided by the application based on the above embodiment is as follows:

[0047] The bottom of the inner cylinder 32 is provided with an annular insertion hole 321 for inserting the rotating shaft 341. The inner wall of the annular insertion hole 321 is provided with a dismounting groove 322. The outer circumferential surface of the rotating shaft 341 is provided with a fixing groove 3411 which is communicated with the dismounting groove 322. The automatic dismounting mechanism 5 comprises a dismounting spring 51 and a connecting block 52. The dismounting spring 51 is arranged in the dismounting groove 322. The connecting block 52 is slidingly arranged at the opening of the dismounting groove 322. When the dismounting spring 51 is in a natural state, the connecting block 52 is simultaneously inserted into the dismounting groove 322 and the fixing groove 3411. The upper and lower surfaces of the connecting block 52 in the fixing groove 3411 are oppositely and obliquely arranged.

[0048] When the connecting block 52 is inserted into the fixing groove 3411, the rotating shaft 341 can drive the inner cylinder 32 to rotate through the connecting block 52. When the inner cylinder 32 is inserted into the outer cylinder 31 and moves upward to be separated from the outer cylinder 31, the connecting block 52 can be automatically inserted into or separated from the fixing groove 3411, so as to make the dismounting between the rotating shaft 341 and the dismounting shaft more convenient.

[0049] The embodiment provided by the application based on the above embodiment is as follows: Figures 2-3

[0050] ​The automatic dismounting mechanism 5 further comprises an extruding rod 53, a moving ring 54, an isolation plate 55, an extruding spring 56 and a transmission assembly 57; the extruding rod 53 is slidingly arranged at the bottom of the inner cylinder 32, the upper surface of the connecting block 52 is provided with an extruding groove 521 for inserting the extruding rod 53, and the bottom of the extruding rod 53 and the side of the extruding groove 521 facing the dismounting shaft 342 are both arranged in an inclined manner; the moving ring 54 is slidingly sleeved on the dismounting shaft 342, and when the dismounting shaft 342 is inserted into the rotating shaft 341, the top end of the rotating shaft 341 upwardly pushes the moving ring 54; the isolation plate 55 is fixed between the inner cylinder 32 and the dismounting shaft 342; the extruding spring 56 is arranged between the top of the moving ring 54 and the isolation plate 55 and is used for driving the moving ring 54 to reset; and the transmission assembly 57 is arranged between the moving ring 54 and the extruding rod 53, and when the moving ring 54 rises, the extruding rod 53 is driven to descend by the transmission assembly 57, and the extruding rod 53 extrudes the connecting block 52 into the fixing groove 3411.

[0051] Further, the transmission assembly 57 comprises a transmission rack 571 and a transmission gear 572 in the embodiment, one of the transmission racks 571 is fixed on the moving ring 54, the other is fixed on the extruding rod 53 in parallel, and the transmission gear 572 is rotatably connected to the inner bottom wall of the inner cylinder 32 and is engaged between the two transmission racks 571.

[0052] Further, the isolation plate 55 is arranged in a tapered manner from inside to outside, and the extruding rod 53, the moving ring 54, the extruding spring 56 and the transmission assembly 57 are covered inside.

[0053] When the inner cylinder 32 is installed into the outer cylinder 31, the top end of the rotating shaft 341 is inserted into the annular insertion hole 321 and upwardly pushes the moving ring 54, at this time, the moving ring 54 drives the extruding rod 53 to descend through the transmission assembly 57, the extruding rod 53 extrudes the inclined surface of the extruding groove 521, and the connecting block 52 is tightly pressed in the fixing groove 3411, thereby improving the transmission stability between the rotating shaft 341 and the dismounting shaft 342.

[0054] As shown in Figure 1 the above embodiment, a specific implementation manner provided by the present application is as follows:

[0055] The underground water extraction assembly 1 comprises an extraction pump 11 and an extraction water pipe 12; one end of the extraction pump 11 is connected with the flocculation tank 21; one end of the extraction water pipe 12 is located in the underground water, and the other end is connected with the extraction pump 11.

[0056] The underground water can be extracted into the flocculation tank 21 through the extraction water pipe 12 by starting the extraction pump 11, and the structure is simple and efficient.

[0057] As shown in Figure 1 the above embodiment, a specific implementation manner provided by the present application is as follows:

[0058] The groundwater reinjection assembly 4 comprises a reinjection pump 41 and a reinjection pipe 42; the reinjection pump 41 is connected to the bottom of the outer cylinder 31 at one end; the reinjection pipe 42 is connected to the reinjection pump 41 at one end and is located underground at the other end.

[0059] The groundwater in the outer cylinder 31 that has been treated can be pumped back into the ground through the reinjection pipe 42 by starting the reinjection pump 41, so as to realize the circulation treatment of the groundwater.

[0060] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0061] It is to be noted that the terms used herein are merely for the purpose of describing the specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise, and it should be further understood that the terms "comprise" and / or "include" as used herein specify the presence of the stated features, steps, operations, devices, components and / or combinations thereof.

[0062] The relative arrangement, numerical expressions and values of the components and steps set forth in the embodiments do not limit the scope of the present application, unless otherwise specified. It should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The techniques, methods and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the authorized specification, if appropriate. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

Claims

1. A groundwater extraction-reinjection circulation treatment device, characterized by, The utility model relates to a groundwater extraction assembly (1) for extracting groundwater to the ground, a pretreatment system (2) connected with the groundwater extraction assembly (1) for water quality pretreatment of groundwater, a biological activated carbon treatment system (3) connected with the pretreatment system (2) for biological activated carbon adsorption and organic matter decomposition treatment of pretreated groundwater, and a groundwater reinjection assembly (4) connected with the biological activated carbon treatment system (3) for reinjection of treated groundwater from the biological activated carbon treatment system (3) to the ground. The biological activated carbon treatment system (3) comprises an outer cylinder (31) connected with the pretreatment system (2) and the groundwater reinjection assembly (4), an inner cylinder (32) with a porous surface and a hollow interior coaxially rotatingly connected in the outer cylinder (31), a biological activated carbon particle layer (33) arranged around the inner cylinder (32), an inner shaft (34) coaxially fixed in the inner cylinder (32) and penetrating the bottom of the inner cylinder (32) and the bottom of the outer cylinder (31), a rotating assembly (35) arranged at the bottom of the outer cylinder (31) for rotating the inner shaft (34), and a spraying assembly (36) arranged in the outer cylinder (31) for extracting groundwater in the outer cylinder (31) to the top of the inner cylinder (32) for annular spraying. The spraying assembly (36) comprises a fixed table (361) fixedly arranged on the inner bottom wall of the outer cylinder (31) and rotatingly connected with the inner shaft (34), the inner shaft (34) being hollow, the fixed table (361) being provided with an annular cavity (3611) always in communication with the inner shaft (34), an annular pipe (362) communicated at the top of the inner shaft (34), a plurality of nozzles (363) distributed on the annular pipe (362), and a submersible pump (364) arranged at the bottom of the outer cylinder (31) and communicated with the annular cavity (3611). The inner shaft (34) comprises a rotating shaft (341) rotatingly connected at the bottom of the outer cylinder (31) and rotatingly connected with the fixed table (361), and a dismounting shaft (342) fixedly connected with the inner cylinder (32) and inserted into the rotating shaft (341) at the bottom. An automatic dismounting mechanism (5) is arranged between the rotating shaft (341) and the dismounting shaft (342), the automatic dismounting mechanism (5) releases the fixation between the rotating shaft (341) and the dismounting shaft (342) when the inner cylinder (32) is lifted upward, and the rotating shaft (341) and the dismounting shaft (342) are automatically fixed when the rotating shaft (341) is inserted into the dismounting shaft (342). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The inner cylinder (32) is provided with an annular insertion hole (321) at the bottom for inserting the rotating shaft (341), and a dismounting groove (322) is formed in the inner wall of the annular insertion hole (321), and a fixing groove (3411) is formed in the outer circumferential surface of the rotating shaft (341) and is communicated with the dismounting groove (322); the automatic dismounting mechanism (5) comprises: a dismounting spring (51) arranged in the dismounting groove (322); a connecting block (52) slidingly arranged at the opening of the dismounting groove (322), wherein when the dismounting spring (51) is in a natural state, the connecting block (52) is simultaneously inserted into the dismounting groove (322) and the fixing groove (3411), and the upper and lower surfaces of the connecting block (52) located in the fixing groove (3411) are oppositely and obliquely arranged; a pressing rod (53) slidingly arranged at the bottom of the inner cylinder (32), and an extrusion groove (521) is formed in the upper surface of the connecting block (52) for inserting the pressing rod (53), and the bottom of the pressing rod (53) and the side of the extrusion groove (521) facing the dismounting shaft (342) are obliquely arranged; a moving ring (54) slidingly sleeved on the dismounting shaft (342), wherein when the dismounting shaft (342) is inserted into the rotating shaft (341), the top end of the rotating shaft (341) upwardly pushes the moving ring (54); an isolation plate (55) fixed between the inner cylinder (32) and the dismounting shaft (342); a pressing spring (56) arranged between the top of the moving ring (54) and the isolation plate (55) and used for driving the moving ring (54) to reset; and a transmission assembly (57) arranged between the moving ring (54) and the pressing rod (53), wherein when the moving ring (54) rises, the pressing rod (53) is driven to descend by the transmission assembly (57), and the pressing rod (53) extrudes the connecting block (52) towards the fixing groove (3411).

2. The groundwater pump-and-treat recycling apparatus of claim 1, wherein, The pretreatment system (2) comprises: a flocculation tank (21) connected with the underground water extraction assembly (1) and used for completing the flocculation process of underground water; and an ozone treatment tank (22) connected with the flocculation tank (21) and used for ozone oxidation treatment of the underground water after flocculation treatment.

3. The groundwater pump-and-treat recycling apparatus of claim 1, wherein, The inner cylinder (32) is arranged in an inverted conical shape and gradually narrows from the top opening to the bottom.

4. The groundwater pump-and-treat recycling apparatus of claim 1, wherein, The underground water extraction assembly (1) comprises: an extraction pump (11) connected with the pretreatment system (2) at one end; and an extraction water pipe (12) located in underground water at one end and connected with the extraction pump (11) at the other end.

5. The groundwater pump-and-treat recycling apparatus of claim 1, wherein, The underground water backfill assembly (4) comprises: a backfill pump (41) connected with the biological activated carbon treatment system (3) at one end; and a backfill water pipe (42) connected with the backfill pump (41) at one end and located in the ground at the other end.

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