Pollutant blocking site bottom treatment system and pollutant treatment method

Abstract

The invention discloses a pollutant blocking site bottom treatment system and a pollutant treatment method, and belongs to the technical field of pollutant treatment engineering. The system comprises a blocking groove; the bottom supporting body is arranged at the bottom of the blocking groove and forms a cavity with the bottom of the blocking groove; the lifting support body is arranged on the upper disc surface of the bottom support body and vertically reciprocates; and the pumping and discharging unit is arranged in the bottom supporting body and is used for realizing pumping of bottom pollutants. According to the system, a bottom supporting body forming a certain gap with the bottom of a blocking groove is arranged at the bottom of the blocking groove, a lifting supporting body is arranged on the bottom supporting body, and after a preparation is guided into the bottom of the blocking groove through a pump drainage unit, pollutants in the blocking groove are stirred up and down by starting a lifting driving mechanism; the problem of pollutant leakage caused by damage of the impermeable film can be avoided, mixing of reactants and pollutants is facilitated, and then the reaction efficiency of the preparation and the pollutants is effectively improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of pollutant treatment engineering, and more specifically, relates to a pollutant isolation site bottom treatment system and a pollutant treatment method. Background Art

[0002] For industrial waste, such as chemical waste or heavy metal pollutants, in order to prevent pollutants from penetrating into the soil or groundwater during landfill treatment, there are very strict pollutant control methods to deal with the pollution of the above pollutants to the soil or groundwater. When the existing pollutants are buried, it is necessary to build a barrier site. Among the various forms of barrier sites, the most widely used form is the funnel-shaped structure with a large top and a small bottom. After the barrier site is built, an anti-pollution barrier and an anti-seepage barrier are set on the surrounding walls of the barrier site. The anti-pollution barrier and the anti-seepage barrier are an in-situ control method that can effectively prevent pollutants in the contaminated site from migrating to the surrounding environment. At present, the GCL composite barrier wall composed of a geosynthetic clay liner (Geosynthetics Clay Liner, GCL) and a backfill wall has become a new type of composite barrier form, and its anti-seepage and anti-pollution performance has been significantly improved compared with traditional barrier walls. When the anti-pollution barrier and anti-seepage barrier are used for chemical pollutant treatment, after the pollutants are stored in the barrier site covered with the GCL composite barrier wall, a cover film needs to be installed on the opening of the barrier site to prevent the pollutants from flowing out from the outer wall of the foundation pit of the barrier site, so as to treat the pollutants. By putting the preparation into the barrier site and gradually reacting with the chemical pollutants, the chemical pollutants can be treated. As the reaction time increases, the chemical pollutants will be effectively treated.

[0003] However, when the pollutants are treated as described above, the pollutants will be deposited at the bottom of the barrier site. Therefore, by simply placing the preparation into the barrier site, the pollutants at the bottom of the barrier site cannot effectively contact the preparation, resulting in low efficiency in pollutant treatment. If the pollutants in the barrier site are turned over by a stirring reaction device, the contact efficiency between the pollutants at the bottom of the barrier site and the preparation can be effectively improved. However, as the treatment time increases, the presence of hard block-shaped pollutants will cause damage to the GCL anti-seepage membrane in the GCL composite barrier wall, thereby causing the risk of leakage. Therefore, there is an urgent need to improve the problems existing in the prior art.

[0004] After searching, patent CN118420092A discloses a wastewater treatment device, including a reaction tower, in which a No. 1 cylindrical cage and a No. 2 cylindrical cage are fixedly arranged, a reflux chamber is located above the No. 1 cylindrical cage, a stirring chamber is located between the No. 1 cylindrical cage and the No. 2 cylindrical cage, and a wastewater chamber is located below the No. 2 cylindrical cage. A rotating pipe is rotatably arranged in the reflux chamber, and a fixed pipe is fixedly arranged in the wastewater chamber. A one-way drainage port is opened at the lower end of the fixed pipe, and a reflux port is arranged at the upper end of the rotating pipe. A lifting and lowering block is arranged in the fixed pipe, and a plurality of liquid-passing grooves are arranged on the lifting and lowering block. A plugging piece is arranged below the lifting and lowering block. After all the wastewater is injected into the reaction tower, the wastewater located above will enter the rotating pipe and finally be discharged from the fixed pipe below, thereby realizing the circulation of the wastewater, and finally ensuring that all the wastewater can undergo catalytic oxidation reaction through the catalyst. Although the wastewater is lifted and circulated by the lifting device, the solid sediment at the bottom of the blocking tank is not taken into account, and the stirring reaction device

[0005] Patent JPH0540394U discloses a bottom sediment cleaning device, which sucks the sediment at the bottom of the tank into a vacuum tank of a vacuum truck through a suction pipe with a suction box at the lower end, and uses a vertical movement operating device to achieve vertical movement.

[0006] However, the above patents are not applicable to barrier sites using GCL composite barrier walls. Summary of the invention

[0007] 1. Problem to be solved

[0008] In view of the problem that the existing device is not suitable for a barrier site using a GCL composite barrier wall, the present invention provides a bottom treatment system for a pollutant barrier site, which can avoid the problem of pollutant leakage caused by damage to the anti-seepage membrane.

[0009] 2. Technical solution

[0010] In order to solve the above problems, the technical solution adopted by the present invention is as follows:

[0011] A pollutant isolation site bottom treatment system, comprising:

[0012] The barrier groove is generally arranged in a funnel shape with a large top and a small bottom;

[0013] The bottom support body is arranged at the bottom of the barrier groove, and is in the shape of a disk as a whole, and a cavity is formed between the lower disk surface and the bottom of the barrier groove;

[0014] A lifting support body, which is disk-shaped as a whole and is mounted on the upper disk surface of the bottom support body, wherein the lifting support body is connected to a lifting drive mechanism, and the lifting drive mechanism drives the lifting support body to move vertically back and forth;

[0015] The pumping unit is connected to the bottom support body and is located below the bottom support body to achieve the suction of bottom pollutants.

[0016] Wherein, the bottom support body includes a central support body and unit support bodies arranged on the central support body, and the unit support bodies are provided in multiple groups, and the multiple groups of unit support bodies are symmetrically distributed around the central support body.

[0017] Furthermore, the central support body is located at the center of the bottom of the blocking groove, and has a certain height with the bottom of the blocking groove, forming a gap, so that the bottom is connected with the bottom of the blocking groove.

[0018] Furthermore, the unit support body includes a supporting disc and an end cover, the lower disc surface of the supporting disc abuts against the bottom of the blocking groove, a center tube is vertically provided at the center of the upper disc surface of the supporting disc, a gap is provided between the center tube and the supporting disc, and a return spring is provided between the center tube and the supporting disc along the vertical direction, so that the supporting disc and the lower tube end of the center tube can slide vertically.

[0019] Furthermore, the end cover is arranged above the supporting disc and is concentrically arranged with the central tube.

[0020] Furthermore, an elastic strip is provided between the end cover and the center tube, and the elastic strip is arranged along the radial direction of the center tube. Multiple groups of elastic strips constitute a funnel-shaped structure with a small center and a large edge. One end of the elastic strip is slidably connected to the lower disk surface of the end cover, and the other end is fixedly connected to the upper end of the center tube. A support cover is provided on the lower end surface of the end cover, and the support cover is in contact with or away from the bottom of the barrier groove.

[0021] Furthermore, the suction unit includes a central suction and drainage pipe and a reaction tube. Specifically, a threaded cover is provided at the upper end of the central tube, and the threaded cover and the upper end of the central tube form a threaded connection. A central suction and drainage pipe is vertically slidably provided at the center of the threaded cover. One end of the central suction and drainage pipe is connected to a liquid supply pipeline or a suction pipeline, and the other end passes into the central tube cavity. A telescopic spring is provided on the central suction and drainage pipe, and one end of the telescopic spring is fixed to the outside of the tube body of the central suction and drainage pipe, and the other end abuts against the threaded cover, so that the lower end of the central suction and drainage pipe abuts against or separates from the upper disk surface of the support disk.

[0022] Furthermore, a small hole is provided at the lower end of the central pumping and discharging pipe in the circumferential direction, and the mixed liquid or preparation can be extracted or introduced through the small hole, so that the mixed liquid is evenly mixed in the area.

[0023] A plurality of groups of reaction tubes are arranged at intervals in the circumferential direction of the central tube. The reaction tubes extend along the radial direction of the supporting disc, and the reaction tubes are communicated with the tube cavity of the central tube.

[0024] Furthermore, the central support body comprises a central bottom plate, and the central bottom plate abuts against the bottom of the blocking groove. In order to form a main gathering nest at the bottom of the blocking groove, the lower plate height of the central bottom plate is lower than the lower plate height of the supporting disc.

[0025] Furthermore, the unit support body is arranged above the central support body, and the unit support body includes a central chassis, an intermediate connecting pipe is vertically arranged at the center of the upper disk surface of the central chassis, a gap is arranged between the lower end of the intermediate connecting pipe and the upper disk surface of the central chassis, a connecting cover is provided at the upper end of the central connecting pipe, the connecting cover is threadedly connected to the upper end of the central connecting pipe, a central conduit is vertically slidably arranged at the center of the connecting cover, the upper end of the central conduit is connected to the liquid supply pipeline or the suction pipeline, and the lower end leads to the central connecting tube cavity, the preparation is introduced into the central connecting tube through the central conduit, and is mixed and circulated with the surrounding pollutants.

[0026] The unit support body and the central support body form a detachable structure. To achieve the connection between the unit support body and the central support body, a connecting ring is provided on the end cover. The connecting ring is connected to the radial connecting pipe as a whole. The radial connecting pipe is sleeved on the middle connecting pipe.

[0027] Furthermore, the lifting support body includes a lifting grille plate, which is arranged above the bottom support body and concentrically with the central chassis. The lifting grille plate and the connecting ring form a sliding fit in the vertical direction. Specifically, the connecting ring and the radial connecting tube are provided with vertical guide rods, and corresponding guide holes are provided on the lower plate surface of the lifting grille plate. The lifting grille plate slides vertically on the vertical guide rods. The lifting grille plate is provided with a lifting rod, and the lifting support body realizes vertical reciprocating movement through a lifting drive mechanism.

[0028] Furthermore, the lifting drive mechanism includes a lifting rod, which is arranged vertically, and a truss is provided on the notch of the blocking groove. The lower end of the lifting rod is connected to the lifting grille plate, and the upper end of the lifting rod forms a vertical sliding fit with the truss. The upper end of the lifting rod is provided with a lifting roller, and the wheel core of the lifting roller is arranged horizontally. A lifting wedge is slidably provided on the truss, and the lifting wedge slides horizontally on the truss. The lifting roller rests on the inclined surface of the lifting wedge, and the lifting wedge is driven by a lifting electric cylinder, and the lifting wedge is connected to the piston rod of the lifting electric cylinder, and the lifting electric cylinder is horizontally installed on the truss.

[0029] Furthermore, a plurality of adjustment rails are provided at intervals in the circumferential direction of the upper surface of the lifting grille plate, the adjustment rails are arranged in the radial direction of the lifting grille plate, and fan-shaped support pieces are slidably provided on the adjustment rails, and the plurality of fan-shaped support pieces form a disc shape.

[0030] A method for treating pollutants using the above device, the pollutant treatment method comprising the following steps:

[0031] Step 1: Install the above-mentioned pollutant barrier site bottom treatment system in the barrier tank;

[0032] Step 2: transporting the pollutants into the barrier tank, introducing the preparation to the bottom of the barrier tank through the pumping unit, and performing a reaction cleaning treatment on the pollutants;

[0033] Step 3: Start the lifting drive mechanism to achieve reciprocating lifting of the lifting support body, so as to stir the pollutants in the barrier tank up and down;

[0034] Step 4: Start the pumping unit to implement the suction cycle of the preparation in the barrier tank, so as to achieve the up and down circulation of the preparation in the barrier tank, realize the rapid response treatment of the pollutants, until the pollutants are completely treated.

[0035] When the treatment system is used to treat pollutants, the barrier tank presents a funnel structure, and a bottom support body is placed at the bottom of the funnel-shaped barrier tank to form a gap between the bottom support body and the barrier tank. A lifting support body is arranged on the bottom support body. When the preparation is introduced into the bottom of the barrier tank through the pumping unit, the lifting drive mechanism is started to vertically reciprocate the lifting support body, thereby effectively improving the reaction efficiency between the preparation and the pollutants. The pumping unit can be used to repeatedly clean the pollutants in the barrier tank and repeatedly pump the preparation, so that the preparation or the cleaning agent can circulate in the barrier tank, thereby achieving rapid treatment of chemical pollutants. By lifting the chemical pollutants up and down, the problem of pollutant leakage caused by damage to the anti-seepage membrane can be avoided.

[0036] 3. Beneficial effects

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] (1) The pollutant barrier site bottom treatment system of the present invention has a bottom support body at the bottom of the barrier tank, which forms a certain gap with the bottom of the barrier tank, and a lifting support body is provided on the bottom support body. After the preparation is introduced into the bottom of the barrier tank through the pumping unit, the lifting drive mechanism is started to stir the pollutants in the barrier tank up and down, which can avoid the problem of pollutant leakage caused by damage to the anti-seepage membrane, facilitate the mixing of reactants and pollutants, and thus effectively improve the reaction efficiency of the preparation and pollutants;

[0039] (2) The pollutant barrier site bottom treatment system of the present invention is provided with a pumping unit at the bottom of the barrier tank, and a flushing liquid is introduced into the central tube through a liquid supply pipeline. The lifting support body is moved downward so that the lower end of the central tube contacts the supporting disc to form a seal. The cleaning liquid is discharged through the reaction tube to clean the reaction tube, thereby ensuring that the reaction tube is conductive and avoiding the problem of pipeline blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but it should be understood that these drawings are designed only for explanation purposes and are not intended to limit the scope of the present invention. In addition, unless otherwise specified, these drawings are intended only to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.

[0041] Figure 1 It is a front view of the bottom treatment system of the pollutant barrier site of the present invention in the barrier tank;

[0042] Figure 2 It is a plan view of a bottom support body and a lifting support body in the bottom treatment system of the pollutant isolation site of the present invention;

[0043] Figure 3 and Figure 4 It is a schematic structural diagram of the bottom support body and the lifting support body in the bottom treatment system of the pollutant isolation site of the present invention from two perspectives;

[0044] Figure 5 It is a schematic diagram of the structure of the bottom support body and the lifting support body after the fan-shaped support piece is moved out of the present invention;

[0045] Figure 6 It is a schematic structural diagram of the bottom support body of the present invention;

[0046] Figure 7 It is a plan view of the bottom support body of the present invention;

[0047] Figure 8 and Fig. 9 Schematic diagrams of the structure of the unit support body in the bottom support body of the present invention from two viewing angles;

[0048] Fig.10 It is a schematic diagram of the cross-sectional structure of a unit support body in the bottom support body of the present invention;

[0049] Fig.11 It is a schematic diagram of the cross-sectional structure of the central support body in the bottom support body of the present invention;

[0050] Fig.12 It is a schematic cross-sectional view of a part of the structure of the barrier groove of the present invention;

[0051] In the figure: 100, barrier groove;

[0052] 200, bottom support body; 210, unit support body; 211, support disc; 212, center tube; 213214, threaded cover; 214217, elastic strip; 215218, end cover; 21512181, support cover; 220, center support body; 221, center chassis; 222, middle connecting tube; 223, connecting cover; 224, center conduit; 225, connecting ring; 226, radial connecting tube;

[0053] 300, lifting support body; 310, lifting grille plate; 311, adjusting track; 312, fan-shaped support sheet; 320, lifting rod; 330, truss; 340, lifting roller; 350, lifting wedge block; 360, lifting electric cylinder;

[0054] 410213, reaction tube; 215420, central extraction tube; 216430, telescopic spring;

[0055] Compacted soil protective layer a; geogrid b; GCL anti-seepage membrane c; light-cured geomembrane main anti-seepage layer d; geotextile secondary protective layer e. DETAILED DESCRIPTION

[0056] The following detailed description of exemplary embodiments of the present invention refers to the accompanying drawings, which form a part of the description, and in which exemplary embodiments of the present invention that can be implemented are shown as examples. Although these exemplary embodiments are described in sufficient detail to enable those skilled in the art to implement the present invention, it should be understood that other embodiments can be implemented and various changes can be made to the present invention without departing from the spirit and scope of the present invention. The following more detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but is only for the purpose of illustrating and not limiting the description of the characteristics and features of the present invention, so as to propose the best mode for performing the present invention and to enable those skilled in the art to implement the present invention. Therefore, the scope of the present invention is limited only by the appended claims.

[0057] It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention. As used herein, the terms "parallel" and "perpendicular" are not limited to their strict geometric definitions, but include tolerances for reasonable and inconsistent machining or human errors.

[0058] The following is combined with Figures 1 to 11 , the pollutant barrier site bottom treatment system of the present invention is described in detail:

[0059] Example 1

[0060] Before introducing the bottom treatment system of the pollutant barrier site, we first briefly introduce the existing problems. Chemical pollutants are different from domestic waste. Their wastewater or waste liquid contains a large amount of benzene, halogenated hydrocarbons and various heavy metals. Therefore, their actual treatment is more complicated and more cautious to avoid pollutants from penetrating into the soil or groundwater. In actual treatment, different preparations are required to participate, and the time and sequence of the export of preparations need to be controlled to improve the treatment efficiency. At present, when treating chemical pollutants, in order to prevent the pollution source from penetrating into the soil, a treatment pit for treatment is generally built on the ground, and an anti-penetration GCL barrier membrane is set on the side wall and bottom of the pit, and then the chemical pollutants, such as polluted soil, are introduced into the treatment pit. In order to reduce the continuous pollution problem of chemical pollutants, treatment agents are added in sequence in the treatment pit so that the treatment agents can react continuously with chemical pollutants to reduce the harm of the pollutants. However, the pollutants will settle to the bottom of the treatment pit, which makes the contact reaction time between the agent and the pollutant longer, resulting in low treatment efficiency. Moreover, when pollutants are deposited at the bottom, it is easy to cause damage to the barrier membrane, resulting in the risk of pollutant leakage.

[0061] Therefore, the present invention proposes a bottom treatment system for pollutant isolation sites, such as Figure 1-4 As shown, including:

[0062] The barrier groove 100 is generally arranged in a funnel shape with a large top and a small bottom;

[0063] The bottom support body 200 is disposed at the bottom of the barrier groove and is disk-shaped as a whole, and a cavity is formed between the lower disk surface and the bottom of the barrier groove 100;

[0064] The lifting support body 300 is disk-shaped as a whole and is installed on the upper disk surface of the bottom support body 200. The lifting support body 300 is connected to a lifting drive mechanism, and the lifting drive mechanism drives the lifting support body 300 to move vertically back and forth;

[0065] The pumping unit is connected to the bottom support body 200, which is connected to multiple groups of liquid supply pipelines and multiple groups of suction pipelines. One end of the liquid supply pipeline is connected to the liquid outlet of the preparation feeding unit, and the other end of the liquid supply pipeline is introduced into the bottom position of the barrier tank 100 and is located below the bottom support body 200; one end of the suction pipeline is connected to the liquid inlet of the pumping unit, and the other end of the suction pipeline is introduced into the bottom position of the barrier tank 100 and is located below the bottom support body 200.

[0066] like Figure 1As shown, in one embodiment, the groove cavity of the barrier groove 100 has a funnel-shaped structure that is larger at the top and smaller at the bottom, or may have a pyramid-shaped structure that is smaller at the top and larger at the bottom. When hard pollutants, such as soil, stones or other hard materials, fall to the bottom of the barrier groove 100, the bottom support body 200 can be used to support the pollutants, thereby preventing the hard pollutants from causing damage to the barrier membrane and preventing the leakage of pollutants.

[0067] The bottom support body 200 and the bottom of the barrier tank 100 form a cavity, and the preparation is introduced through the liquid supply pipeline in the pumping unit, so that the preparation circulates from bottom to top, thereby significantly improving the treatment efficiency. The treated liquid or mixed liquid in the cavity is sucked through the suction pipeline of the pumping unit, which can realize the rapid circulation of the entire preparation and achieve the purpose of rapid treatment of pollutants.

[0068] By starting the lifting mechanism to lift the lifting support 300, the pollutants deposited on the bottom of the barrier groove 100 can be flipped up and down, avoiding the pollutants from damaging the barrier film, while effectively improving the contact efficiency between the pollutants and the treatment agent, and significantly improving the treatment efficiency.

[0069] Through the above-mentioned pumping unit, the bottom and the interior of the barrier tank 100 can also be flushed, so that the treatment liquid forms a large circulation in the barrier tank 100, and the influence of the pollutants is quickly eliminated.

[0070] To implement the support of the entire pollutant and increase the coverage area of ​​the bottom of the barrier groove 100, as Figure 4-11 As shown, the bottom support body 200 includes a central support body 220 and a unit support body 210 disposed on the central support body 220. The unit support body 210 is provided with multiple groups, and the multiple groups of unit support bodies 210 are symmetrically distributed around the central support body 220. The unit support bodies 210 and the central support body 220 are in a disc shape as a whole. In another embodiment, the central support body 220 can also be in a square structure, and multiple groups of unit support bodies 210 surround the central support body 220, which can cover the bottom of the barrier groove 100 of different sizes.

[0071] Preferably, the central support body 220 is located at the center of the bottom of the barrier groove 100 and has a certain height from the bottom of the barrier groove 100 to form a gap, so that the pollutants can be separated from the barrier groove 100 to avoid damage to the anti-seepage membrane.

[0072] The unit support body 210 and the center support body 220 form a detachable structure. In order to achieve the connection between the unit support body 210 and the center support body 220, a connecting ring 225 is provided on the end cover 215. The connecting ring 225 is connected to the radial connecting pipe 226 as a whole. The radial connecting pipe 226 is sleeved on the middle connecting pipe.

[0073] like Figure 4-7 As shown, in Embodiment 1, the unit support bodies 210 are provided in four groups, and the four groups of unit support bodies 210 are symmetrically arranged around the periphery of the central support body 220 .

[0074] like Figure 8 and Fig. 9 As shown, in order to avoid damage to the barrier film caused by the contact between the unit support body 210 and the barrier film, the unit support body 210 includes a support disc 211 and an end cap 215. The lower disc surface of the support disc 211 abuts against the bottom of the barrier groove 100, significantly increasing the contact area between the entire device and the ground, and avoiding the risk of damage caused by stress concentration on the barrier film. A central tube 212 is vertically arranged at the center of the upper disc surface of the support disc 211, and a return spring is arranged between the central tube 212 and the support disc 211 in the vertical direction. The support disc 211 slides vertically with the lower tube end of the central tube 212, so that the central tube 212 and the support disc 211 form a vertical sliding fit.

[0075] like Fig.10 As shown, a gap is arranged between the central tube 212 and the supporting disc 211. After the pollutants are deposited at the bottom of the barrier groove 100, the pollutants and the preparation can be evenly mixed in the gap between the central tube 212 and the supporting disc 211, thereby improving the treatment efficiency. The mixed liquid after the preparation and the pollutant treatment is circulated and sucked through the gap to achieve uniform mixing, so as to achieve the purpose of mixed stirring and improve the treatment efficiency.

[0076] like Fig.11 As shown, the end cap 215 is arranged above the support disc 211 and is arranged concentrically with the center tube 212. An elastic strip 214 is arranged between the end cap 215 and the center tube 212. The elastic strip 214 is arranged along the radial direction of the center tube 212. Multiple groups of elastic strips 214 form a funnel-shaped structure with a small center and a large edge. One end of the elastic strip 214 is slidably connected to the lower disk surface of the end cap 215, and the other end is fixedly connected to the upper end of the center tube 212, so that after the support disc 211 contacts the bottom of the barrier groove, the bottom of the barrier groove 100 can form multiple groups of gathering nests, which can effectively gather pollutants, and the center tube 212 is located in the gathering nest position, so as to facilitate the circulation treatment and improve the treatment efficiency. The lower end surface of the end cap 215 is provided with an end cap 2151, and the end cap 2151 is against or away from the bottom of the barrier groove 100.

[0077] When the pollutants are under pressure on the lifting support body 300, the elastic strip 214 is deformed, so that the end cover 2151 abuts against the bottom of the barrier tank 100 to avoid damage to the anti-seepage membrane of the barrier tank 100. When the lifting drive mechanism drives the lifting support body 300 to move upward, the elastic strip 214 is reset, so that the support disc 211 rises, so that the reaction tube 410 is in a state of being expanded up and down, so as to achieve stirring of the preparation and the polluted sediment at the bottom of the lower end of the barrier tank 100, thereby improving the reaction efficiency.

[0078] The suction unit includes a central suction and exhaust pipe 420 and a reaction tube 410. In order to achieve connection with the suction and exhaust system, a threaded cover 213 is provided at the upper end of the central tube 212. The threaded cover 213 and the upper end of the central tube 212 form a threaded connection. The center of the threaded cover 213 is vertically slidably provided with a central suction and exhaust pipe 420. The central suction and exhaust pipe 420 is connected to a liquid supply pipeline or a suction pipeline. A telescopic spring 430 is sleeved on the central suction and exhaust pipe 420. One end of the telescopic spring 430 is fixed to the outside of the tube body of the central suction and exhaust pipe 420, and the other end abuts against the threaded cover 213. The lower end of the central suction and exhaust pipe 420 abuts against or is separated from the upper disk surface of the support disk 211.

[0079] When the central tube 212 is actually installed, the central tube 212 is inserted into the threaded hole of the threaded cover 213, and then the threaded cover 213 is rotated to the upper end position of the central pumping pipe 420. By connecting the liquid supply pipeline or the suction pipeline with the central tube 212, the mixed liquid at the bottom of the barrier tank 100 is circulated and mixed to achieve the effect of flushing and spraying.

[0080] The central tube 212 is provided with a plurality of reaction tubes 410 at intervals in the circumferential direction. The reaction tubes 410 are arranged extending along the radial direction of the support disk 211 , and the reaction tubes 410 are communicated with the lumen of the central tube 212 .

[0081] In one embodiment, the reaction tube 410 is a permeable tube having a deformable ability. When the preparation is introduced into the central tube 212, the preparation is dispersed through the reaction tube 410, which can significantly increase the contact area between the preparation and the deposited pollutants, thereby improving the reaction efficiency. When the reaction is completed, the reaction tube 410 is used to suck the mixed liquid and extract it through the suction pipeline of the suction unit, or the preparation is reintroduced to form a cycle.

[0082] The central tube 212 and the support disc 211 form a vertical sliding fit, and a return spring is arranged between the central tube 212 and the support disc 211. When the pollutant is placed on the lifting support body 300, the end cover 215 moves downward, driving the elastic strip 214 to move, so that the central tube 212 moves downward to the lower end of the central tube 212 and contacts the support disc 211, forming a seal, and the mixed liquid can only enter and exit through the reaction tube 410. As the use time increases, the reaction tube 410 becomes blocked, and the flushing liquid is introduced into the central tube 212 through the liquid supply pipeline. Since the lower end of the central tube 212 is in contact with the support disc 211 to form a seal, the cleaning liquid can only be discharged through the reaction tube 410 to clean the reaction tube 410 and ensure that the reaction tube 410 is conductive. When the preparation circulation needs to be realized, the lifting support body 300 can be driven to lift by the lifting drive mechanism, thereby forming a gap between the central tube 212 and the support disc 211. The preparation can enter the bottom of the barrier tank 100 through the gap between the reaction tube 410 and the central tube 212 and the support disc 211, and react with the precipitated pollutants to improve the reaction efficiency.

[0083] In order to achieve uniform discharge or suction of the liquid at the bottom of the barrier tank 100, a small hole is set in the circumferential direction of the lower end of the central suction pipe 420, and the mixed liquid or the preparation can be extracted or introduced through the small hole, so that the mixed liquid is evenly mixed in the area and the preparation is evenly introduced. After the treatment is completed, the mixed liquid is evenly sucked out, and then the cleaning liquid is evenly extracted and introduced to achieve circulation.

[0084] like Fig.11 As shown, the central support body 220 includes a central bottom plate 221, which abuts against the bottom of the barrier groove 100. In order to form a main gathering nest at the bottom of the barrier groove 100, the lower disk height of the central bottom plate 221 is lower than the lower disk height of the supporting disk 211. Under the pressure of the central bottom plate 221, a deeper main gathering nest is formed at the bottom of the barrier groove 100, and the precipitated pollutants gather on the main gathering nest. When the preparation is introduced into the main gathering nest, the preparation circulates from the bottom of the entire barrier groove 100 to the periphery to further improve the efficiency.

[0085] The unit support body 210 is arranged above the central support body 220, and the unit support body 210 includes a central chassis 221, and an intermediate connecting pipe 222 is vertically arranged at the center of the upper disk surface of the central chassis 221. A gap is arranged between the lower end of the intermediate connecting pipe 222 and the upper disk surface of the central chassis 221, and a connecting cover 223 is provided at the upper end of the central connecting pipe 222. The connecting cover 223 is threadedly connected to the upper end of the central connecting pipe 222, and a central conduit 224 is vertically slidably arranged at the center of the connecting cover 223. The upper end of the central conduit 224 is connected to the liquid supply pipeline or the suction pipeline, and the lower end leads to the cavity of the central connecting pipe 222. The preparation is introduced into the central connecting pipe 222 through the central conduit 224, and mixed and circulated with the surrounding pollutants.

[0086] The pollutants are mainly deposited at the bottom of the barrier tank 100, that is, below the central support body 220. Therefore, the outlet and suction positions of the exhaust unit can be concentrated below the central support body 220, so that the entire treatment agent circulates around the central support body 220 to significantly improve the treatment efficiency.

[0087] In one embodiment, in order to implement the up and down lifting of the lifting support body 300, a lifting support body 300 is provided on the bottom support body 200, and the lifting support body 300 includes a lifting grille plate 310, and the lifting grille plate 310 is provided above the bottom support body 200 and is arranged concentrically with the central chassis 221. The lifting grille plate 310 and the connecting ring 225 form a sliding fit in the vertical direction, and the lifting support body 300 realizes vertical reciprocating movement through a lifting drive mechanism.

[0088] Specifically, vertical guide rods are provided on the connecting ring 225 and the radial connecting tube 226 , corresponding guide holes are provided on the lower plate surface of the lifting grille plate 310 , the lifting grille plate 310 slides vertically on the vertical guide rods, and the lifting grille plate 310 is provided with a lifting rod 320 .

[0089] like Figure 1-4As shown, the lifting drive mechanism includes a lifting rod 320, the lifting rod 320 is arranged vertically, a truss 330 is arranged on the notch of the blocking groove 100, the upper end of the lifting rod 320 and the truss 330 form a vertical sliding fit, the upper end of the lifting rod 320 is provided with a lifting roller 340, the wheel core of the lifting roller 340 is arranged horizontally, and a lifting wedge 350 is slidably provided on the truss 330, and the lifting wedge 350 slides horizontally on the truss 330. The lifting roller 340 rests on the inclined surface of the lifting wedge 350, and the lifting wedge 350 is driven by the lifting electric cylinder 360. The lifting wedge 350 is connected to the piston rod of the lifting electric cylinder 360, and the lifting electric cylinder 360 is horizontally installed on the truss 330. In actual use, according to the usage, by starting the lifting electric cylinder 360, the lifting rod 320 can be driven to move vertically to achieve the disturbance of the mitigation liquid at the bottom of the barrier tank 100 and the up and down disturbance of the pollutants, so as to improve the reaction efficiency.

[0090] like Figure 5 In order to adjust the supporting area of ​​the entire lifting grille plate 310 to meet the demand for lifting pollutants, a plurality of adjustment rails 311 are arranged at intervals in the circumferential direction of the upper surface of the lifting grille plate 310. The adjustment rails 311 are arranged along the radial direction of the lifting grille plate 310. Fan-shaped support pieces 312 are slidably provided on the adjustment rails 311. The plurality of fan-shaped support pieces 312 form a disc shape.

[0091] A method for treating pollutants using the above device, the pollutant treatment method comprising the following steps:

[0092] Step 1: construct the barrier groove 100 so that the barrier groove 100 presents a funnel shape with a large top and a small bottom. After the construction is completed by the construction equipment, the inner wall of the barrier groove 100 is compacted and the groove wall of the barrier groove 100 is kept flat;

[0093] Step 2: Fig.12 As shown, the soil on the wall and bottom of the barrier trench 100 is compacted to form a compacted soil protection layer a, and a geogrid b is laid on the wall and bottom of the barrier trench 100 so that the geogrid b is flat and has no warping problem.

[0094] Step 3: Lay the GCL anti-seepage membrane c on the geogrid b to make the GCL anti-seepage membrane c flat and ensure the sealing of the joints of the GCL anti-seepage membrane c. The thickness of the GCL anti-seepage membrane c is selected according to the design requirements. The joints of the GCL anti-seepage membrane c need to be reliably bonded to ensure sealing.

[0095] Step 4: Spray the main anti-seepage layer d of the photocuring geomembrane on the GCL anti-seepage membrane c. During construction, spray the unsaturated monomer mixture mixed with photoinitiator and carbon black powder on the GCL anti-seepage membrane c, and irradiate the mixture with ultraviolet light of a certain wavelength to form a continuous photocuring geomembrane. In order to improve the puncture resistance of the entire barrier trough 100, a geotextile secondary protective layer e is evenly laid on the main anti-seepage layer d of the photocuring geomembrane, and a geobag main protective layer f is evenly laid on the geotextile secondary protective layer e.

[0096] Step 5: Install the above-mentioned pollutant isolation site bottom treatment system in the isolation tank 100.

[0097] Step 6: transport the pollutants into the barrier tank 100, introduce the agent into the extraction unit, and introduce it into the bottom of the barrier tank 100 to perform a reaction cleaning treatment on the pollutants;

[0098] Step 7: Start the lifting drive mechanism to reciprocate the lifting support 300 to lift the pollutants in the barrier tank 100 up and down.

[0099] Step eight, by starting the pumping unit, implement a suction cycle of the preparation in the barrier tank 100, so as to achieve an up and down circulation of the preparation in the barrier tank 100, so as to implement a rapid response treatment of the pollutants until the pollutants are completely treated.

[0100] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope involved in the present application is not limited to the technical solution formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the inventive concept, such as a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

[0101] Except for the technical features described in the specification, the remaining technical features are known technologies to those skilled in the art. In order to highlight the innovative features of the present invention, the remaining technical features will not be described here in detail.

Claims

1. A pollutant isolation site bottom treatment system, characterized in that: include: A barrier groove (100); A bottom support body (200) is disposed at the bottom of the barrier groove (100) and forms a cavity with the bottom of the barrier groove (100); A lifting support body (300) is disposed on the upper surface of the bottom support body (200) and moves vertically back and forth; The extraction unit (400) is arranged in the bottom support body (200) to realize the extraction of bottom pollutants.

2. A pollutant isolation site bottom treatment system, characterized in that: The bottom support body (200) includes a central support body (220) and a unit support body (210) arranged on the central support body (220); the central support body (220) is located at the bottom of the barrier groove (100) and forms a gap with the bottom of the barrier groove (100); and the unit support bodies (210) are symmetrically distributed around the central support body (220).

3. The pollutant isolation site bottom treatment system according to claim 2, characterized in that: The unit support body (210) comprises a support disc (211), the lower disc surface of the support disc (211) abuts against the bottom of the blocking groove (100), the upper disc surface of the support disc (211) is vertically provided with a center tube (212), a gap is provided between the center tube (212) and the support disc (211), and a return spring is provided between the center tube (212) and the support disc (211) along the vertical direction, so that the center tube (212) slides vertically on the support disc (211).

4. The pollutant isolation site bottom treatment system according to claim 3, characterized in that: An end cover (215) is provided above the support disc (211) and is arranged concentrically with the central tube (212). An elastic strip (214) is provided between the end cover (215) and the central tube (212). The elastic strip (214) is arranged along the radial direction of the central tube (212). One end of the elastic strip (214) is slidably connected to the lower disc surface of the end cover (215), and the other end is fixedly connected to the upper end of the central tube (212). An end cover (2151) is provided on the lower end surface of the end cover (215), and the end cover (2151) abuts against or moves away from the bottom of the barrier groove (100).

5. The pollutant isolation site bottom treatment system according to claim 4, characterized in that: The unit support body (210) comprises a central chassis (221), an intermediate connecting pipe (222) is vertically arranged at the center of the upper plate surface of the central chassis (221), the lower end of the intermediate connecting pipe (222) is arranged in a gap with the central chassis (221), a connecting cover (223) is arranged at the upper end of the central connecting pipe (222), a central conduit (224) is vertically slidably arranged at the center of the connecting cover (223), the upper end of the central conduit (224) is connected to the pumping unit (400), and the lower end leads to the cavity of the central connecting pipe (222).

6. The bottom treatment system for pollutant isolation site according to claim 5 is characterized in that: The pumping unit (400) comprises a central pumping pipe (420) and a reaction tube (410). The reaction tube (410) is arranged along the circumference of the central tube (212). The reaction tube (410) is communicated with the tube cavity of the central tube (212). A threaded cover (213) is provided at the upper end of the central tube (212). A central pumping pipe (420) is provided at the center of the threaded cover (213). The central pumping pipe (420) slides vertically in the central tube (212). A telescopic spring (430) is sleeved on the central pumping pipe (420). One end of the telescopic spring (430) is fixed to the outer side of the tube body of the central pumping pipe (420), and the other end abuts against the threaded cover (213). The lower end of the central pumping pipe (420) abuts against or is separated from the upper disk surface of the support disk (211).

7. The pollutant isolation site bottom treatment system according to claim 6, characterized in that: The lifting support body (300) comprises a lifting grille plate (310), which is arranged above the bottom support body (200) and is arranged concentrically with the central chassis (221). The lifting grille plate (310) is vertically slidably matched with the connecting ring (225), and the lifting support body (300) realizes vertical reciprocating movement through a lifting drive mechanism.

8. The pollutant isolation site bottom treatment system according to claim 7, characterized in that: The lifting drive mechanism includes a lifting rod (320), the lifting rod (320) is arranged vertically, the lower end of the lifting rod (320) is connected to the lifting grille plate (310), a truss (330) is provided on the notch of the blocking groove (100), the upper end of the lifting rod (320) slides vertically on the truss (330), the upper end of the lifting rod (320) is provided with a lifting roller (340), a lifting wedge (350) is slidably provided on the truss (330), the lifting wedge (350) slides horizontally on the truss (330), the lifting roller (340) rests on the inclined surface of the lifting wedge (350), the lifting wedge (350) is driven by a lifting electric cylinder (360), and the lifting wedge (350) is connected to the piston rod of the lifting electric cylinder (360).

9. The pollutant isolation site bottom treatment system according to claim 8, characterized in that: The upper surface of the lifting grille plate (310) is provided with at least one set of adjustment tracks (311), the adjustment tracks (311) are arranged radially along the lifting grille plate (310), and fan-shaped support pieces (312) are slidably provided on the adjustment tracks (311), and the multiple sets of fan-shaped support pieces (312) form a disc shape.

10. A method for treating pollutants using the pollutant isolation site bottom treatment system according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: Install the pollutant isolation site bottom treatment system in the isolation tank (100); Step 2: transport the pollutants into the barrier tank (100), introduce the preparation to the bottom of the barrier tank (100) through the pumping unit, and perform a reaction cleaning treatment on the pollutants; Step 3: Start the lifting drive mechanism to achieve reciprocating lifting of the lifting support body (300) to stir the pollutants in the barrier tank (100) up and down; Step 4: Start the pumping unit to implement a suction cycle of the preparation in the barrier tank (100) to achieve an up and down circulation of the preparation in the barrier tank (100), thereby realizing a rapid response treatment of the pollutants until the pollutants are completely treated.

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