A contaminated site bottom treatment system and a method of treating contaminants

Abstract

This invention discloses a bottom treatment system and method for pollutant barrier sites, belonging to the field of pollutant control engineering technology. The system includes a barrier tank; a bottom support body located at the bottom of the barrier tank, forming a cavity with the bottom of the tank; a lifting support body located on the upper surface of the bottom support body, capable of vertical reciprocating movement; and a suction unit located within the bottom support body to extract pollutants from the bottom. The system features a bottom support body at the bottom of the barrier tank, forming a certain gap with the bottom of the tank, and a lifting support body mounted on the bottom support body. When the agent is introduced into the bottom of the barrier tank through the suction unit, the lifting drive mechanism is activated to agitate the pollutants within the barrier tank, preventing pollutant leakage due to damage to the geomembrane, facilitating the mixing of reactants and pollutants, and thus effectively improving the reaction efficiency between the agent and pollutants.

Description

Technical Field

[0001] This invention belongs to the field of pollutant treatment engineering technology, and more specifically, relates to a pollutant barrier site bottom treatment system and pollutant treatment method. Background Technology

[0002] For industrial waste, such as chemical waste or heavy metal pollutants, strict pollution control methods are in place to prevent the pollutants from seeping into the soil or groundwater during landfill disposal. Existing methods for landfilling pollutants require the construction of barrier sites. Among various barrier site designs, a funnel-shaped structure with a wider top and narrower bottom is widely used. After the barrier site is constructed, anti-fouling barriers and anti-seepage barriers are installed around its perimeter. These barriers are an in-situ control method that effectively prevents the migration of pollutants from the contaminated site into the surrounding environment. Currently, GCL composite barrier walls, composed of geosynthetic clay liners (GCLs) and backfill walls, have become a new type of composite barrier, offering significantly improved anti-seepage and anti-fouling performance compared to traditional barrier walls. When the aforementioned antifouling and seepage-proof barriers are applied to the treatment of chemical pollutants, after the pollutants are stored in the barrier area covered by the GCL composite barrier wall, the openings of the barrier area need to be covered with a membrane to prevent the pollutants from flowing out from the outer wall of the barrier pit, thus enabling the treatment of the pollutants. By adding the agent to the barrier area and gradually reacting it with the chemical pollutants, the chemical pollutants are treated. As the reaction time increases, the chemical pollutants will be effectively treated.

[0003] However, during the aforementioned pollutant treatment, pollutants tend to settle at the bottom of the barrier. Therefore, simply adding the treatment agent to the barrier fails to effectively contact the pollutants at the bottom, resulting in low treatment efficiency. Using a stirring and agitating device to agitate the pollutants within the barrier can effectively improve the contact efficiency between the pollutants and the treatment agent. However, with prolonged treatment time, hard, lumpy pollutants can damage the GCL geomembrane in the GCL composite barrier wall, leading to a risk of leakage. Therefore, improvements to the existing technology are urgently needed.

[0004] A search revealed that patent CN118420092A discloses a wastewater treatment device, including a reaction tower. Two cylindrical cages, a first and a second, are fixedly installed inside the reaction tower. A reflux chamber is located above the first cylindrical cage, a stirring chamber is located between the two cages, and a wastewater chamber is located below the second cylindrical cage. A rotating pipe is installed in the reflux chamber, and a fixed pipe is fixed in the wastewater chamber. The lower end of the fixed pipe has a one-way drain outlet, and the upper end of the rotating pipe has a reflux outlet. A lifting pressure block is installed inside the fixed pipe, and several liquid passage channels are provided on the lifting pressure block. A sealing element is located below the lifting pressure block. After all the wastewater is injected into the reaction tower, the wastewater at the top enters the rotating pipe and is finally discharged from the fixed pipe at the bottom, thus achieving wastewater circulation and ensuring that all wastewater can undergo catalytic oxidation reaction. Although it uses a lifting device to circulate the wastewater, it does not consider preventing solid sediment from forming at the bottom of the channels.

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

[0006] However, none of the above patents apply to barrier sites that use GCL composite barrier walls. Summary of the Invention

[0007] 1. The problem to be solved

[0008] To address the issue that existing devices are not suitable for barrier sites using GCL composite barrier walls, this invention provides a bottom treatment system for pollutant barrier sites, which can prevent pollutant leakage caused by damage to the geomembrane.

[0009] 2. Technical Solution

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

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

[0012] The barrier channel is arranged in a funnel shape, with a larger top and a smaller bottom.

[0013] The bottom support is located at the bottom of the barrier groove. It is disc-shaped and a cavity is formed between the lower disc surface and the bottom of the barrier groove.

[0014] The lifting support body is disc-shaped and mounted on the upper surface of the bottom support body. The lifting support body is connected to the lifting drive mechanism, which drives the lifting support body to move vertically back and forth.

[0015] The extraction unit is connected to the bottom support and is located below the bottom support to extract pollutants from the bottom.

[0016] The bottom support includes a central support and unit supports disposed on the central support. The unit supports are provided in multiple sets, and the multiple sets of unit supports are symmetrically distributed around the central support.

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

[0018] Furthermore, the unit support includes a support disk and an end cap. The lower surface of the support disk abuts against the bottom of the barrier groove. A central tube is vertically provided at the center of the upper surface of the support disk. A gap is provided between the central tube and the support disk. A return spring is provided between the central tube and the support disk in the vertical direction, so that the support disk and the lower end of the central tube can slide vertically.

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

[0020] Furthermore, an elastic strip is provided between the end cap and the central tube. The elastic strip is arranged along the radial direction of the central tube, and multiple sets of elastic strips form a funnel-shaped structure with a small center and a large edge. One end of the elastic strip is slidably connected to the lower plate surface of the end cap, and the other end is fixedly connected to the upper end of the central tube. A support cover is provided on the lower end surface of the end cap, and the support cover is either abutting against or away from the bottom of the barrier groove.

[0021] Furthermore, the extraction unit includes a central extraction tube and a reaction tube. Specifically, the upper end of the central tube is provided with a threaded cap, which forms a threaded connection with the upper end of the central tube. The central extraction tube is vertically slidably disposed in the center of the threaded cap. One end of the central extraction tube is connected to a liquid supply line or a suction line, and the other end is inserted into the central tube cavity. A telescopic spring is fitted on the central extraction tube. One end of the telescopic spring is fixed to the outside of the central extraction tube, and the other end abuts against the threaded cap, so that the lower end of the central extraction tube abuts against or separates from the upper surface of the support disc.

[0022] Furthermore, a small hole is provided in the circumferential direction at the lower end of the central extraction tube, through which the mixture or preparation can be extracted or introduced, so that the mixture is uniformly mixed in this area.

[0023] The central tube is provided with multiple sets of reaction tubes at intervals in the circumferential direction. The reaction tubes extend along the radial direction of the supporting disk and are connected to the cavity of the central tube.

[0024] Furthermore, the central support includes a central chassis that abuts against the bottom of the barrier groove. To ensure that the bottom of the barrier groove forms a main gathering depression, the lower surface of the central chassis is lower than the lower surface of the supporting disc.

[0025] Furthermore, the unit support is located above the central support, which includes a central chassis. A central connecting pipe is vertically arranged at the center of the upper surface of the central chassis. A gap is arranged between the lower end of the central connecting pipe and the upper surface of the central chassis. A connecting cap is provided at the upper end of the central connecting pipe, and the connecting cap 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 cap. The upper end of the central conduit is connected to the liquid supply line or the suction line, and the lower end leads to the cavity of the central connecting pipe. The preparation is introduced into the central connecting pipe through the central conduit and mixed and circulated with the surrounding contaminants.

[0026] The unit support and the central support form a detachable structure. To achieve the connection between the unit support and the central support, the end cap is provided with a connecting ring. The connecting ring is integrated with the radial connecting pipe, and the radial connecting pipe is sleeved on the central connecting pipe.

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

[0028] Furthermore, the lifting drive mechanism includes a lifting rod arranged vertically, a truss provided on the opening of the barrier groove, a lifting grid plate connected to the lower end of the lifting rod, a vertical sliding engagement between the upper end of the lifting rod and the truss, a lifting roller provided at the upper end of the lifting rod, the wheel core of the lifting roller arranged horizontally, a lifting wedge slidably provided on the truss, the lifting wedge sliding horizontally on the truss, the lifting roller abutting against the inclined surface of the lifting wedge, the lifting wedge being driven by a lifting electric cylinder, the lifting wedge being connected to the piston rod of the lifting electric cylinder, and the lifting electric cylinder being horizontally mounted on the truss.

[0029] Furthermore, the lifting grid disk has multiple sets of adjustment rails spaced at intervals in the circumferential direction. The adjustment rails are arranged in the radial direction of the lifting grid disk, and fan-shaped support plates are slidably arranged on the adjustment rails. The multiple sets of fan-shaped support plates form a disk shape.

[0030] The method for treating pollutants using the above-mentioned pollutant barrier site bottom treatment system includes the following steps:

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

[0032] Step 2: Transfer the pollutants to the barrier tank, and introduce the preparation to the bottom of the barrier tank through the extraction unit to perform reaction cleaning treatment on the pollutants.

[0033] Step 3: By activating the lifting drive mechanism, the lifting support body is reciprocated to agitate the pollutants in the barrier tank.

[0034] Step 4: By activating the extraction and discharge unit, the preparation in the barrier tank is extracted and circulated to achieve up-and-down circulation of the preparation in the barrier tank, thereby realizing rapid reaction and treatment of pollutants until the pollutants are completely treated.

[0035] When this treatment system is used to treat pollutants, the barrier tank has a funnel-shaped structure. A bottom support is placed at the bottom of the funnel-shaped barrier tank, creating a gap between the bottom support and the barrier tank. A lifting support is installed on the bottom support. After the preparation is introduced into the bottom of the barrier tank through the extraction unit, the lifting drive mechanism is activated to drive the lifting support vertically back and forth, thereby effectively improving the reaction efficiency between the preparation and the pollutants. Furthermore, the extraction unit can be used to repeatedly clean the pollutants in the barrier tank and repeatedly extract the preparation, allowing the preparation or cleaning agent to circulate within the barrier tank, achieving rapid treatment of chemical pollutants. By lifting the chemical pollutants vertically, the problem of pollutant leakage caused by damage to the geomembrane can be avoided.

[0036] 3. Beneficial effects

[0037] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0038] (1) The bottom treatment system of the pollutant barrier site of the present invention has a bottom support body at the bottom of the barrier tank that forms a certain gap with the bottom of the barrier tank, and a lifting support body is set on the bottom support body. When the preparation is introduced into the bottom of the barrier tank through the pumping unit, the pollutants in the barrier tank are stirred up and down by activating the lifting drive mechanism. This can avoid the problem of pollutant leakage caused by the damage of the impermeable membrane, which is conducive to the mixing of reactants and pollutants, thereby effectively improving the reaction efficiency of the preparation and pollutants.

[0039] (2) The pollutant barrier site bottom treatment system of the present invention has a pumping unit at the bottom of the barrier tank. The flushing liquid is introduced into the central pipe through the liquid supply pipeline. The lifting support body is moved down so that the lower end of the central pipe contacts the support disc to form a seal. The cleaning liquid is discharged through the reaction pipe to clean the reaction pipe, ensure the reaction pipe is unobstructed, and avoid the problem of pipe blockage. Attached Figure Description

[0040] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that these drawings are designed for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, unless specifically indicated, these drawings are intended only to conceptually illustrate the structural construction described herein and are not necessarily drawn to scale.

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

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

[0043] Figure 3 and Figure 4 This is a schematic diagram of the bottom support and lifting support in the pollutant barrier site bottom treatment system of the present invention from two different perspectives.

[0044] Figure 5 This is a schematic diagram of the bottom support and lifting support of the present invention after the fan-shaped support piece has been removed;

[0045] Figure 6 This is a schematic diagram of the bottom support structure of the present invention;

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

[0047] Figure 8 and Figure 9 These are schematic diagrams of the unit support structure in the bottom support of the present invention from two different perspectives;

[0048] Figure 10 This is a schematic cross-sectional view of the unit support in the bottom support of the present invention;

[0049] Figure 11 This is a schematic cross-sectional view of the central support body in the bottom support body of the present invention;

[0050] Figure 12 This is a partial cross-sectional schematic diagram of the barrier groove of the present invention;

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

[0052] 200. Bottom support; 210. Unit support; 211. Support disc; 212. Central tube; 213. Threaded cap; 214. Elastic strip; 215. End cap; 2151. Support cap; 220. Central support; 221. Central chassis; 222. Central connecting tube; 223. Connecting cap; 224. Central conduit; 225. Connecting ring; 226. Radial connecting tube;

[0053] 300. Lifting support body; 310. Lifting grid plate; 311. Adjusting track; 312. Fan-shaped support plate; 320. Lifting rod; 330. Truss; 340. Lifting roller; 350. Lifting wedge; 360. Lifting electric cylinder;

[0054] 410. Reaction tube; 420. Central exhaust tube; 430. Telescopic spring;

[0055] a) Compacted soil protective layer; b) Geogrid; c) GCL geomembrane; d) Light-cured geomembrane primary geomembrane; e) Geotextile secondary protective layer. Detailed Implementation

[0056] The following detailed description of exemplary embodiments of the invention is taken with reference to the accompanying drawings, which form part of the description and illustrate exemplary embodiments in which the invention may be practiced. While these exemplary embodiments have been described in sufficient detail to enable those skilled in the art to practice the invention, it should be understood that other embodiments may be implemented and various changes may be made to the invention without departing from the spirit and scope thereof. The more detailed description of embodiments of the invention below is not intended to limit the scope of the claimed invention, but is merely illustrative and not restrictive of the description of the features and characteristics of the invention, to suggest the best mode for carrying out the invention, and is sufficient to enable those skilled in the art to practice the invention. Therefore, the scope of the invention is defined only by the appended claims.

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

[0058] The following is in conjunction with the appendix Figures 1 to 11 The present invention provides a detailed description of the pollutant barrier site bottom treatment system:

[0059] Example 1

[0060] Before introducing the bottom treatment system for this pollutant barrier site, let's briefly discuss the existing problems. Chemical pollutants differ from municipal solid waste; their wastewater or liquid contains large amounts of benzene, halogenated hydrocarbons, and various heavy metals. Therefore, their actual treatment is more complex and requires greater caution to prevent pollutants from seeping into the soil or groundwater. In practice, different agents are needed, and the timing and sequence of agent removal must be controlled to improve treatment efficiency. Currently, to prevent pollution sources from seeping into the soil, treatment pits are typically constructed on the ground. Impermeable GCL (Gas-Clean Cordless Liquid) membranes are installed on the sidewalls and bottom of the pit. Chemical pollutants, such as contaminated soil, are then introduced into the pit. To reduce the problem of continuous pollution, treatment agents are added sequentially into the pit, allowing them to react continuously with the pollutants and reduce their harmfulness. However, pollutants settle to the bottom of the pit, resulting in a longer reaction time between the agents and pollutants, leading to lower treatment efficiency. Moreover, when pollutants accumulate at the bottom, they can easily damage the barrier membrane, leading to the risk of pollutant leakage.

[0061] Therefore, this invention proposes a pollutant barrier site bottom treatment system, such as... Figure 1-4 As shown, it includes:

[0062] The barrier channel 100 is arranged in a funnel shape, with the upper part being larger and the lower part smaller.

[0063] The bottom support 200 is located at the bottom of the barrier groove, and is generally disc-shaped with a cavity formed between the lower disc surface and the bottom of the barrier groove 100.

[0064] The lifting support 300 is disc-shaped and mounted on the upper surface of the bottom support 200. The lifting support 300 is connected to the lifting drive mechanism, which drives the lifting support 300 to move vertically back and forth.

[0065] The extraction and discharge unit is connected to the bottom support 200 and is connected to multiple sets of liquid supply pipelines and multiple sets of suction pipelines. One end of the liquid supply pipeline is connected to the liquid outlet of the formulation supply unit, and the other end of the liquid supply pipeline is introduced into the bottom of the barrier tank 100 and is located below the bottom support 200. One end of the suction pipeline is connected to the liquid inlet of the extraction and discharge unit, and the other end of the suction pipeline is introduced into the bottom of the barrier tank 100 and is located below the bottom support 200.

[0066] like Figure 1As shown, in one embodiment, the barrier trough 100 has a funnel-shaped structure that is larger at the top and smaller at the bottom, or it can 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 trough 100, the bottom support 200 can support the pollutants, preventing the hard pollutants from damaging the barrier membrane and preventing the pollutants from leaking.

[0067] The bottom support 200 and the bottom of the barrier tank 100 form a cavity. The preparation is introduced through the liquid supply pipeline in the extraction unit, allowing the preparation to circulate from bottom to top, thereby significantly improving the treatment efficiency. By suctioning the treated liquid or mixture in the cavity through the suction pipeline of the extraction unit, rapid circulation of the entire preparation can be achieved, thus achieving the purpose of quickly treating contaminants.

[0068] By activating the lifting mechanism to lift the support body 300, the pollutants deposited at the bottom of the barrier tank 100 can be turned upside down, preventing the pollutants from damaging the barrier membrane while effectively improving the contact efficiency between the pollutants and the treatment agent, thus significantly improving the treatment efficiency.

[0069] The aforementioned extraction unit can also be used to flush the bottom and interior of the barrier tank 100, allowing the treatment liquid to form a large circulation within the barrier tank 100 and quickly eliminate the impact of pollutants.

[0070] To provide support for the entire contaminant and to increase the coverage area of ​​the bottom of the barrier tank 100, such as... Figure 4-11 As shown, the bottom support 200 includes a central support 220 and unit supports 210 disposed on the central support 220. Multiple sets of unit supports 210 are symmetrically distributed around the central support 220. The unit supports 210 and the central support 220 together form a disc shape. In another embodiment, the central support 220 may also have a square structure, with multiple sets of unit supports 210 surrounding the central support 220, capable of covering the bottom of the barrier groove 100 in different sizes.

[0071] Preferably, the central support 220 is located at the center of the bottom of the barrier trough 100 and has a certain height from the bottom of the barrier trough 100, forming a gap, so that pollutants can be separated from the barrier trough 100 and damage to the geomembrane can be avoided.

[0072] The unit support 210 and the central support 220 form a detachable structure. To achieve the connection between the unit support 210 and the central support 220, the end cap 215 is provided with a connecting ring 225. The connecting ring 225 is connected to the radial connecting pipe 226 as a whole. The radial connecting pipe 226 is sleeved on the central connecting pipe 222.

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

[0074] like Figure 8 and Figure 9 As shown, to avoid damage to the barrier membrane caused by contact between the unit support 210 and the barrier membrane, the unit support 210 includes a support disk 211 and an end cap 215. The lower surface of the support disk 211 abuts against the bottom of the barrier groove 100, significantly increasing the contact area between the entire device and the ground, thus avoiding the risk of stress concentration and breakage of the barrier membrane. A central tube 212 is vertically provided at the center of the upper surface of the support disk 211. A return spring is provided vertically between the central tube 212 and the support disk 211. The support disk 211 and the lower end of the central tube 212 slide vertically, forming a vertical sliding fit between the central tube 212 and the support disk 211.

[0075] like Figure 10 As shown, the central tube 212 and the supporting disk 211 are arranged with a gap. After the pollutants are deposited at the bottom of the barrier tank 100, the pollutants and the preparation can form a uniform mixture of pollutants and preparations in the gap between the central tube 212 and the supporting disk 211, thereby improving the treatment efficiency. The mixture of preparations and pollutants after treatment is circulated and drawn through this gap to achieve uniform mixing, thereby achieving the purpose of mixing and stirring, and improving the treatment efficiency.

[0076] like Figure 11 As shown, the end cap 215 is located above the supporting disc 211 and is concentrically arranged with the central tube 212. An elastic strip 214 is provided between the end cap 215 and the central tube 212. The elastic strip 214 is arranged radially along the central tube 212, and multiple sets 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 surface of the end cap 215, and the other end is fixedly connected to the upper end of the central tube 212. This allows multiple aggregation pits to form at the bottom of the barrier groove 100 after the supporting disc 211 contacts the bottom of the barrier groove 100, effectively accumulating pollutants. The central tube 212 is located at these aggregation pits, facilitating circulation and improving treatment efficiency. A supporting cover 2151 is provided on the lower end face of the end cap 215, and the supporting cover 2151 is either abutted against or away from the bottom of the barrier groove 100.

[0077] When the pollutants are pressed onto the lifting support 300, the elastic strip 214 deforms, causing the support cover 2151 to abut against the bottom of the barrier tank 100, thus avoiding damage to the impermeable membrane of the barrier tank 100. When the lifting drive mechanism drives the lifting support 300 to move upward, the elastic strip 214 resets, causing the support disc 211 to rise, thereby causing the reaction tube 410 to be in an up-and-down unfolding state, so as to achieve stirring of the preparation and pollutant precipitate at the bottom of the barrier tank 100, thereby improving the reaction efficiency.

[0078] The extraction unit includes a central extraction pipe 420 and a reaction pipe 410. To connect with the extraction system, a threaded cap 213 is provided at the upper end of the central pipe 212. The threaded cap 213 and the upper end of the central pipe 212 form a threaded connection. The central extraction pipe 420 is vertically slidably disposed at the center of the threaded cap 213. The central extraction pipe 420 is connected to a liquid supply line or a suction line. A telescopic spring 430 is sleeved on the central extraction pipe 420. One end of the telescopic spring 430 is fixed to the outside of the central extraction pipe 420, and the other end abuts against the threaded cap 213. The lower end of the central extraction pipe 420 abuts against or separates from the upper surface of the support disc 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 position of the central suction pipe 420. Through the connection between the liquid supply pipe or the suction pipe and the central tube 212, the mixed liquid at the bottom of the barrier tank 100 is circulated and mixed to achieve the effect of rinsing and spraying.

[0080] The central tube 212 is provided with multiple sets of reaction tubes 410 at intervals in the circumferential direction. The reaction tubes 410 extend along the radial direction of the supporting disk 211 and are connected to the cavity of the central tube 212.

[0081] In one embodiment, the reaction tube 410 is a permeable tube with deformability. 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. After the reaction is completed, the mixture is sucked out through the suction pipe of the pumping unit using the reaction tube 410, or the preparation is reintroduced to form a cycle.

[0082] The central tube 212 and the supporting disk 211 form a vertical sliding fit. A return spring is provided between the central tube 212 and the supporting disk 211. When the contaminant is placed on the lifting support 300, the end cap 215 moves down, driving the elastic strip 214 to move, so that the central tube 212 moves down until the lower end of the central tube 212 contacts the supporting disk 211, forming a seal. The mixture can only enter and exit through the reaction tube 410. As usage time increases, the reaction tube 410 becomes clogged. Flushing fluid is introduced into the central tube 212 through the supply line. Since the lower end of the central tube 212 contacts the support disc 211, forming a seal, the cleaning fluid can only be discharged through the reaction tube 410, thus cleaning the reaction tube 410 and ensuring its continuity. When formulation circulation is required, the lifting support 300 can be raised by the lifting drive mechanism, creating a gap between the central tube 212 and the support disc 211. The formulation can then enter the bottom of the barrier tank 100 through the reaction tube 410 and the gap between the central tube 212 and the support disc 211, reacting with the precipitated contaminants to improve reaction efficiency.

[0083] To achieve uniform discharge or injection of liquid from the bottom of the barrier tank 100, a small hole is provided in the circumferential direction at the lower end of the central extraction pipe 420. The mixture or preparation can be extracted or introduced through the small hole, so that the mixture is uniformly mixed in the area and the preparation is uniformly introduced. After the treatment is completed, the mixture is uniformly drawn out, and then the cleaning liquid is uniformly extracted and introduced to achieve circulation.

[0084] like Figure 11 As shown, the central support 220 includes a central base 221, which abuts against the bottom of the barrier groove 100. To form a main accumulation pit at the bottom of the barrier groove 100, the lower surface of the central base 221 is lower than the lower surface of the supporting disc 211. Under the pressure of the central base 221, a deeper main accumulation pit is formed at the bottom of the barrier groove 100. The precipitated pollutants accumulate on the main accumulation pit. When the formulation is introduced into the main accumulation pit, the formulation circulates to the periphery of the entire bottom of the barrier groove 100 to further improve efficiency.

[0085] The unit support 210 is located above the central support 220. The central support 220 includes a central chassis 221. A central connecting pipe 222 is vertically arranged at the center of the upper surface of the central chassis 221. The lower end of the central connecting pipe 222 is spaced apart from the upper surface of the central chassis 221. A connecting cap 223 is provided at the upper end of the central connecting pipe 222. The connecting cap 223 is threadedly connected to the upper end of the central connecting pipe 222. A central conduit 224 is vertically slidably arranged at the center of the connecting cap 223. The upper end of the central conduit 224 is connected to the liquid supply line or the suction line, 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 contaminants.

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

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

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

[0089] like Figure 1-4As shown, the lifting drive mechanism includes a lifting rod 320, which is vertically arranged. A truss 330 is provided on the opening of the blocking groove 100. The upper end of the lifting rod 320 and the truss 330 form a vertical sliding fit. A lifting roller 340 is provided on the upper end of the lifting rod 320. The wheel core of the lifting roller 340 is horizontally arranged. 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 abuts against the inclined surface of the lifting wedge 350, which is driven by the lifting electric cylinder 360. The lifting wedge 350 is connected to the piston rod of the lifting electric cylinder 360, which is horizontally mounted on the truss 330. In actual use, depending on the usage, the lifting rod 320 can be driven to move vertically by activating the lifting electric cylinder 360, so as to agitate the buffer liquid at the bottom of the barrier tank 100 and agitate the pollutants vertically, thereby improving the reaction efficiency.

[0090] like Figure 5 In order to adjust the support area of ​​the entire lifting grid disk 310 to meet the needs of lifting pollutants, multiple sets of adjustment tracks 311 are arranged at intervals in the circumferential direction on the upper surface of the lifting grid disk 310. The adjustment tracks 311 are arranged in the radial direction of the lifting grid disk 310. Fan-shaped support plates 312 are slidably arranged on the adjustment tracks 311, and multiple sets of fan-shaped support plates 312 form a disk shape.

[0091] The method for treating pollutants using the above-mentioned pollutant barrier site bottom treatment system includes the following steps:

[0092] Step 1: Construct the barrier trough 100 so that it is funnel-shaped with a larger top and a smaller bottom. After the construction is completed using the construction equipment, the inner wall of the barrier trough 100 is compacted to ensure that the wall of the barrier trough 100 is flat.

[0093] Step Two, as follows Figure 12 As shown, the soil on the walls and bottom of the barrier trench 100 is compacted to form a compacted soil protective layer a. Geogrid b is laid on the walls and bottom of the barrier trench 100 to make the geogrid b flat and without warping.

[0094] Step 3: Lay the GCL geomembrane c on the geogrid b, ensuring that the GCL geomembrane c is flat and that the joints of the GCL geomembrane c are sealed. The thickness of the GCL geomembrane c is selected according to the design requirements. The joints of the GCL geomembrane c need to be reliably bonded to ensure a seal.

[0095] Step 4: Spray the light-cured geomembrane main impermeable layer d onto the GCL geomembrane c. During construction, spray the unsaturated monomer mixture containing photoinitiator and carbon black powder onto the GCL geomembrane c. Irradiate the mixture with ultraviolet light of a certain wavelength to form a continuous light-cured geomembrane. To improve the puncture resistance of the entire barrier trench 100, lay the geotextile secondary protective layer e smoothly on the light-cured geomembrane main impermeable layer d, and lay the geotextile bag main protective layer f smoothly on the geotextile secondary protective layer e.

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

[0097] Step 6: Transfer the pollutants into the barrier tank 100, introduce the preparation into the extraction unit and into the bottom of the barrier tank 100 to perform reaction cleaning treatment on the pollutants.

[0098] Step 7: By activating the lifting drive mechanism, the lifting support 300 is reciprocated to lift the pollutants in the barrier tank 100 up and down.

[0099] Step 8: By activating the extraction unit, the preparation in the barrier tank 100 is extracted and circulated to achieve up-and-down circulation of the preparation in the barrier tank 100, so as to implement rapid reaction treatment of contaminants until the contaminants are completely treated.

[0100] The above description is merely a preferred embodiment of this application and an explanation of the technical principles used. Those skilled in the art should understand that the scope involved in this application is not limited to the technical solutions 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. For example, technical solutions formed by replacing the above-mentioned features with technical features with similar functions disclosed in this application (but not limited to) each other.

[0101] Apart from the technical features described in the specification, the other technical features are known to those skilled in the art. To highlight the innovative features of this invention, the other technical features will not be described in detail here.

Claims

1. A contaminated barrier site bottom treatment system, characterized by, The utility model relates to a barrier groove (100) is provided with the bottom support body (200) and the lifting support body (300) of the bottom support body (200) on the bottom support body (200) is provided with the pumping unit (400) of the bottom support body (200) below, the bottom support body (200) includes the center support body (220) and the unit support body (210) of the center support body (220) on the center support body (220) is provided with the support disc (211) of the unit support body (210) symmetry distribution center support body (220) periphery, the support disc (211) is provided with the center pipe (212) of the center pipe (212) and support disc (211) between the gap, center pipe (212) and support disc (211) between along the vertical direction is provided with reset spring, and center pipe (212) and support disc (211) between the vertical direction of sliding fit is formed, the end cover (215) of support disc (211) top is provided with the end cover (215) and center pipe (212) concentric arrangement, the end cover (215) and center pipe (212) between the elastic strip (214) is arranged, the elastic strip (214) along the radial direction of center pipe (212) is arranged, and the elastic strip (214) one end and the lower disc surface of end cover (215) sliding connection, the other end and center pipe (212) upper end fixed connection, the end cover (215) lower end surface is equipped with the support cover (2151), and the support cover (2151) and the groove bottom of barrier groove (100) abut or away, the center bottom disc (221) of center support body (220) includes the center connection pipe (222) of the center bottom disc (221) upper disc surface center vertical setting, the center connection pipe (222) lower end and center bottom disc (221) gap arrangement, and the upper end of center connection pipe (222) is equipped with the connecting cover (223), the center of connecting cover (223) vertical sliding is equipped with the center catheter (224), the upper end of center catheter (224) and liquid supply pipeline or suction pipeline intercommunication, and the lower end leads to center connection pipe (222) cavity. ​ ​ ​ ​ ​ ​ ​ ​ The exhaust unit (400) comprises a center exhaust pipe (420) and a reaction pipe (410), the reaction pipe (410) is arranged circumferentially along the center pipe (212), the reaction pipe (410) is in communication with the lumen of the center pipe (212), the upper end of the center pipe (212) is provided with a threaded cover (213), the center of the threaded cover (213) is vertically slidably provided with the center exhaust pipe (420), the center exhaust pipe (420) is sleeved with a telescopic spring (430), one end of the telescopic spring (430) is fixed outside the pipe body of the center exhaust pipe (420), the other end is abutted with the threaded cover (213), and the lower end of the center exhaust pipe (420) is abutted or separated from the upper disc surface of the supporting disc (211).

2. The contaminant barrier field bottom treatment system of claim 1, wherein, The lifting support body (300) comprises a lifting grid disc (310), the lifting grid disc (310) is arranged concentrically above the bottom support body (200), and the lifting grid disc (310) is vertically slidably connected with the connecting ring (225); the lifting support body (300) vertically reciprocates through a lifting drive mechanism; the end cover (215) is provided with the connecting ring (225), the connecting ring (225) is connected with the radial connecting pipe (226) in an integrated manner, and the radial connecting pipe (226) is sleeved on the center connecting pipe (222).

3. The contaminant barrier field bottom treatment system of claim 2, wherein, The lifting drive mechanism comprises a lifting rod (320), the lifting rod (320) is vertically arranged, the lower end of the lifting rod (320) is connected with the lifting grid disc (310), the notch of the barrier groove (100) is provided with a truss (330), the upper end of the lifting rod (320) is vertically slidably connected with the truss (330), the upper end of the lifting rod (320) is provided with a lifting roller (340), the truss (330) is slidably provided with a lifting wedge block (350), the lifting wedge block (350) horizontally slides on the truss (330), the lifting roller (340) is abutted on the inclined surface of the lifting wedge block (350), and the lifting wedge block (350) is driven by a lifting electric cylinder (360), and the lifting wedge block (350) is connected with the piston rod of the lifting electric cylinder (360).

4. The contaminant barrier field bottom treatment system of claim 3, wherein, A plurality of groups of adjusting tracks (311) are arranged in the circumferential direction on the upper disc surface of the lifting grid disc (310), the adjusting tracks (311) are arranged radially along the lifting grid disc (310), and a plurality of groups of fan-shaped support pieces (312) are arranged on the adjusting tracks (311) and form a disc shape.

5. A method of treating a contaminant using the floor treatment system for a contaminant barrier field according to any one of claims 1 to 4, characterized in that, The method comprises the following steps: Step one, installing the pollution barrier site bottom treatment system in the barrier groove (100); Step two, transporting the pollutants into the barrier groove (100), introducing the preparation into the bottom of the barrier groove (100) through the exhaust unit, and performing reaction cleaning treatment on the pollutants; Step three, starting the lifting drive mechanism to realize the reciprocating lifting of the lifting support body (300) to realize the up-down stirring of the pollutants in the barrier groove (100). Step four, by starting the pumping unit, the pumping cycle of the preparation in the barrier groove (100) is implemented to achieve the up and down circulation of the preparation in the barrier groove (100), so as to realize the rapid reaction treatment of the pollutants until the pollutants are treated.

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