Treatment device for groundwater pollution remediation

Abstract

The invention discloses a treatment device for groundwater pollution remediation, and relates to the technical field of sewage treatment.The treatment device comprises a first sedimentation tank, a second sedimentation tank, a third sedimentation tank and a fourth sedimentation tank, a first liquid outlet pipe, a first electromagnetic valve, a first liquid outlet pump and a second sedimentation tank are connected above one side of the first sedimentation tank; an adsorbent feeding mechanism and a decontamination flora feeding mechanism are arranged on the first sedimentation tank, a first pollution detection mechanism is arranged at the joint of the first liquid outlet pipe and the first sedimentation tank, and a first electromagnetic valve and a first liquid outlet pump are started when the standard is detected; a second liquid outlet pipe is connected above one side of the second sedimentation tank, a second electromagnetic valve is arranged and is communicated with the underground water body, a second pollution detection mechanism is arranged at the joint, and the second electromagnetic valve is started when the standard is detected; the bottom of one side of the first sedimentation tank is connected with a waste discharge pipe, a third electromagnetic valve, a waste discharge pump and a waste tank, the waste tank is communicated with the first sedimentation tank through a water return pipe with a water return pump, and a solid separation net is arranged at the joint; according to the method, the pollution remediation treatment effect can be improved, and secondary pollution is reduced.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to a treatment device for groundwater pollution remediation. Background Technology

[0002] With the increasing awareness of environmental protection in China and the growing prominence of soil and groundwater pollution problems, the soil and groundwater remediation industry has emerged and flourished. Against this backdrop, multiphase extraction remediation technology, with its unique advantages, has rapidly become one of the mainstream technologies in the field of volatile organic compound (VOC) remediation for soil and groundwater. Furthermore, driven by industry demands and technological innovation, this technology continues to develop and improve.

[0003] Multiphase extraction remediation technology is an innovative in-situ soil and groundwater remediation method. Its working principle lies in its ability to simultaneously extract contaminated soil gases, contaminated groundwater, and non-aqueous liquids from the underground vadose zone and saturation zone to the surface for centralized treatment. This technology has a wide range of applications and can be used to remediate various types of target pollutants in soil and groundwater, providing an effective approach to solving complex and ever-changing pollution problems.

[0004] However, traditional multiphase extraction systems have revealed numerous shortcomings in practical applications. Currently, traditional systems are mainly divided into two types: single-pump systems and dual-pump systems. Single-pump systems rely solely on a vacuum pump to simultaneously extract gas and liquid from underground contaminated areas; dual-pump systems require both a vacuum pump and an extraction pump to extract gas and liquid from underground contaminated areas separately. However, both single-pump and dual-pump systems generally suffer from high treatment costs, difficulty in achieving thorough remediation, and a high risk of secondary pollution. These problems, to some extent, limit the further promotion and application of multiphase extraction remediation technology. Summary of the Invention

[0005] In order to at least solve one of the above-mentioned technical problems, the present invention aims to provide a treatment device for groundwater pollution remediation, which improves the pollution remediation effect and reduces the possibility of secondary pollution.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A groundwater pollution remediation treatment device includes a first sedimentation tank, an inlet pipe connected to the upper side of one side of the first sedimentation tank and connected to a groundwater body, an inlet pump installed on the inlet pipe, a first outlet pipe connected to the upper side of one side of the first sedimentation tank and connected to a second sedimentation tank, a first solenoid valve and a first outlet pump installed on the first outlet pipe, an adsorbent dispensing mechanism installed on the first sedimentation tank, and decontamination bacteria dispensing mechanisms installed on both the first and second sedimentation tanks, and a first pollution detection mechanism installed at the connection between the first outlet pipe and the first sedimentation tank; when the first pollution detection mechanism detects that the pollutant concentration is lower than a first preset value, the first solenoid valve and the first outlet pump are activated. A second outlet pipe is connected to one side of the second sedimentation tank. A second solenoid valve is installed on the second outlet pipe. The second outlet pipe is connected to the groundwater body. A second pollution detection mechanism is installed at the connection between the second outlet pipe and the second sedimentation tank. When the second pollution detection mechanism detects that the pollutant concentration is lower than a second preset value, the second solenoid valve is activated. The first preset value is greater than the second preset value. The bottom of one side of the first sedimentation tank is connected to a waste discharge pipe, which is equipped with a third solenoid valve and a waste discharge pump. The waste discharge pipe is connected to a waste pool. The top of one side of the waste pool is connected to the first sedimentation tank through a return water pipe, which is equipped with a return water pump. A solid isolation net is installed at the connection between the return water pipe and the waste pool.

[0007] Preferably, the second sedimentation tank is located higher than the first sedimentation tank, the first sedimentation tank is located higher than the groundwater body, and the waste tank is located higher than the first sedimentation tank.

[0008] Preferably, both the first pollution detection agency and the second pollution detection agency are equipped with water quality testing instruments.

[0009] Preferably, the adsorbent dispensing mechanism includes a first storage tank for holding the adsorbent, a first spray pipe connected to the bottom of the first storage tank, a first rotating nozzle rotatably connected to the bottom of the first spray pipe, a first discharge pump provided on the first spray pipe, a first timing unit provided outside the first storage tank, and the first discharge pump starting intermittently according to the interval time set by the first timing unit.

[0010] Preferably, the decontamination bacteria dispensing mechanism includes a second storage tank for holding the decontamination bacteria liquid, a second spray pipe connected to the bottom of the second storage tank, a second rotating nozzle rotatably connected to the bottom of the second spray pipe, a second discharge pump on the second spray pipe, a second timing unit outside the second storage tank, the second discharge pump starting intermittently according to the interval time set by the second timing unit, and a temperature control component inside the second storage tank.

[0011] Preferably, the temperature control component includes a temperature sensor disposed inside the second storage tank, the inner wall of the second storage tank is embedded with an electric heating arc plate and a semiconductor cooling arc plate, the temperature control component includes a control unit, and the temperature sensor controls the opening or closing of the electric heating arc plate and the semiconductor cooling arc plate through the control unit and according to a preset temperature range.

[0012] Preferably, the decontamination bacteria specifically include a combination of various species of Pseudomonas, Bacillus, and Sphingomonas.

[0013] Preferably, a cleaning motor is embedded in the center of the bottom of the first sedimentation tank, and a cleaning scraper is fixedly connected to the output shaft of the cleaning motor. The bottom of the cleaning scraper slides against the bottom surface of the first sedimentation tank.

[0014] The present invention has the following beneficial effects: Multi-stage sedimentation and detection treatment: The device is equipped with a first sedimentation tank and a second sedimentation tank. Contaminated liquid from the groundwater is pumped into the first sedimentation tank through an inlet pipe for preliminary sedimentation. Simultaneously, an adsorbent dosing mechanism and a decontamination bacteria dosing mechanism add decontamination bacteria solution to adsorb and biodegrade the pollutants. A first pollution detection mechanism monitors the pollutant concentration in the treated liquid from the first sedimentation tank. Only when the concentration is below a first preset value is the liquid transferred to the second sedimentation tank through a first outlet pipe for further treatment. The second sedimentation tank is also equipped with a decontamination bacteria dosing mechanism, and the second pollution detection mechanism monitors the pollutant concentration in the treated liquid. Only when the concentration is below a second preset value (the first preset value is greater than the second preset value) is the liquid discharged back into the groundwater body. This multi-stage sedimentation, detection, and treatment method can more thoroughly remove pollutants from groundwater, significantly improving the pollution remediation effect.

[0015] Precise Dosing of Treatment Substances: Both the adsorbent dosing mechanism and the decontamination bacteria dosing mechanism employ timed dosing. The first storage tank of the adsorbent dosing mechanism is set with an interval via a first timing unit, and the first discharge pump starts at this interval, uniformly dispensing the adsorbent through a first rotating nozzle. Similarly, the second storage tank of the decontamination bacteria dosing mechanism is set with an interval via a second timing unit, and the second discharge pump starts at this interval, uniformly dispensing the decontamination bacteria solution through a second rotating nozzle. This precise timed dosing method allows for reasonable control of the amount of treatment substance dispensed based on the pollution level and treatment progress, avoiding waste while ensuring treatment effectiveness.

[0016] Specific decontamination microbial communities: These communities specifically include various combinations of Pseudomonas, Bacillus, and Sphingomonas. These microbial communities work together to exert different degradation effects on different types of pollutants, enhancing the biodegradation capacity of groundwater pollutants and contributing to improved pollution remediation outcomes.

[0017] Waste Treatment and Recycling: A waste discharge pipe is installed at the bottom of the first sedimentation tank, with a third solenoid valve and a waste discharge pump on the pipe to transport the waste from the bottom of the sedimentation tank to a waste pool. The waste pool is connected to the first sedimentation tank via a return water pipe on one side, equipped with a return water pump and a solid waste isolation screen. The solid waste isolation screen prevents solid impurities from the waste pool from entering the first sedimentation tank, and the return water pump pumps the treated supernatant from the waste pool back to the first sedimentation tank, achieving water resource recycling and reducing secondary pollution to the environment.

[0018] Rational Layout and Emission Control: The second sedimentation tank is positioned higher than the first sedimentation tank, the first sedimentation tank is positioned higher than the groundwater level, and the waste disposal tank is positioned higher than the second sedimentation tank. This layout utilizes gravity to allow the liquid to flow naturally between the different tanks, reducing energy consumption. Simultaneously, strict emission standards are controlled by both primary and secondary pollution monitoring agencies. Discharge only occurs when pollutant concentrations reach or fall below predetermined levels, preventing substandard liquids from being returned to groundwater and reducing the possibility of secondary pollution.

[0019] Temperature control ensures bacterial activity: A temperature control component, including a temperature sensor, an electric heating arc plate, a semiconductor cooling arc plate, and a control unit, is installed in the second storage tank of the decontamination bacterial dispensing mechanism. The temperature sensor monitors the temperature inside the second storage tank in real time, and the control unit controls the opening and closing of the electric heating arc plate and the semiconductor cooling arc plate according to a preset temperature range. This provides a suitable temperature environment for the decontamination bacteria, ensuring their activity and degradation capacity, allowing them to better exert their biodegradation effect on pollutants. They also work synergistically with other parts of the decontamination bacterial dispensing mechanism to improve the overall treatment effect.

[0020] The cleaning device ensures the efficiency of the sedimentation tank: A cleaning motor is embedded in the center of the bottom of the first sedimentation tank. The output shaft of the cleaning motor is fixedly connected to a cleaning scraper, and the bottom of the cleaning scraper slides in contact with the bottom surface of the first sedimentation tank. During the process, the cleaning motor drives the cleaning scraper to rotate, which can promptly remove the sediment at the bottom of the first sedimentation tank, preventing sediment accumulation from affecting the sedimentation effect and treatment efficiency. It works in conjunction with other treatment stages in the first sedimentation tank to ensure the stable operation and treatment effect of the entire device. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1This is a schematic diagram of the overall structure of an embodiment of the present invention.

[0023] Figure 2 This is a cross-sectional view of the adsorbent dispensing mechanism according to an embodiment of the present invention.

[0024] Figure 3 This is a cross-sectional view of the decontamination bacteria dispensing mechanism according to an embodiment of the present invention.

[0025] Figure 4 This is a cross-sectional view of the first sedimentation tank according to an embodiment of the present invention.

[0026] In the diagram: 1. First sedimentation tank; 101. Inlet pipe; 102. Inlet pump; 103. First outlet pipe; 104. First solenoid valve; 105. First outlet pump; 106. First pollution detection device; 2. Second sedimentation tank; 201. Second outlet pipe; 202. Second solenoid valve; 203. Second pollution detection device; 3. Waste tank; 301. Waste discharge pipe; 302. Third solenoid valve; 303. Waste discharge pump; 304. Return water pipe; 305. Return water pump; 30 6. Solid isolation net; 401. First storage tank; 402. First spray pipe; 403. First rotary nozzle; 404. First discharge pump; 405. First timing unit; 501. Second storage tank; 502. Second spray pipe; 503. Second rotary nozzle; 504. Second discharge pump; 505. Second timing unit; 506. Temperature sensor; 507. Heating arc plate; 508. Semiconductor cooling arc plate; 601. Cleaning motor; 602. Cleaning scraper. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figures 1 to 3As shown, a groundwater pollution remediation treatment device includes a first sedimentation tank 1, an inlet pipe 101 connected to the upper side of one side of the first sedimentation tank 1, the inlet pipe 101 being connected to the groundwater body, an inlet pump 102 installed on the inlet pipe 101, a first outlet pipe 103 connected to the upper side of one side of the first sedimentation tank 1, the first outlet pipe 103 being connected to a second sedimentation tank 2, a first solenoid valve 104 and a first outlet pump 105 installed on the first outlet pipe 103, an adsorbent dispensing mechanism installed on the first sedimentation tank 1, and decontamination bacteria dispensing mechanisms installed on both the first sedimentation tank 1 and the second sedimentation tank 2, and a first pollution detection mechanism 106 installed at the connection between the first outlet pipe 103 and the first sedimentation tank 1; when the first pollution detection mechanism 106 detects that the pollutant concentration is lower than a first preset value, the first solenoid valve 104 and the first outlet pump 105 are activated; A second outlet pipe 201 is connected to one side of the second sedimentation tank 2. A second solenoid valve 202 is installed on the second outlet pipe 201. The second outlet pipe 201 is connected to the groundwater body. A second pollution detection mechanism 203 is installed at the connection between the second outlet pipe 201 and the second sedimentation tank 2. When the second pollution detection mechanism 203 detects that the pollutant concentration is lower than the second preset value, the second solenoid valve 202 is activated. The first preset value is greater than the second preset value. The bottom of one side of the first sedimentation tank 1 is connected to a waste discharge pipe 301. A third solenoid valve 302 and a waste discharge pump 303 are installed on the waste discharge pipe 301. The waste discharge pipe 301 is connected to a waste tank 3. The top side of the waste tank 3 is connected to the first sedimentation tank 1 through a return water pipe 304. A return water pump 305 is installed on the return water pipe 304. A solid isolation net 306 is installed at the connection between the return water pipe 304 and the waste tank 3.

[0029] like Figure 1 As shown in Figure 3, the inlet pump 102 is first started, drawing contaminated groundwater from the groundwater body into the first sedimentation tank 1 through the inlet pipe 101. In the first sedimentation tank 1, due to the slowed water flow, some solid particles and impurities gradually settle to the bottom under gravity, achieving preliminary solid-liquid separation. The adsorbent dispensing mechanism is activated at preset time intervals, uniformly dispensing the adsorbent into the liquid in the first sedimentation tank 1 through a specific dispensing device (such as a spray pipe and rotating nozzle; if not specified, a common spiral spray structure can be used to ensure uniform dispersion of the adsorbent). The adsorbent has a large specific surface area and adsorption capacity, enabling it to adsorb organic pollutants, heavy metal ions, and other impurities in the liquid, further reducing the concentration of pollutants.

[0030] The decontamination bacteria dispensing mechanisms installed on the first sedimentation tank 1 and the second sedimentation tank 2 also activate at preset time intervals, uniformly dispensing a decontamination bacteria solution containing a combination of Pseudomonas, Bacillus, and Sphingomonas into the corresponding sedimentation tanks. These decontamination bacteria can grow and reproduce using pollutants as a nutrient source under suitable environmental conditions, and decompose pollutants into harmless substances such as carbon dioxide, water, and simple inorganic matter through biological metabolism, thereby achieving the biodegradation treatment of pollutants. The first pollution detection mechanism 106 (which can be a water quality analyzer, specifying detectable pollutant indicators such as chemical oxygen demand (COD) and heavy metal content) monitors the pollutant concentration in the liquid of the first sedimentation tank 1 in real time. When the detected pollutant concentration is lower than a first preset value (the specific value needs to be determined based on the actual pollution situation and treatment requirements, for example, COD below 100 mg / L), the first solenoid valve 104 and the first discharge pump 105 are activated, transporting the pre-treated liquid from the first sedimentation tank 1, which has reached a certain standard, to the second sedimentation tank 2 through the first discharge pipe 103.

[0031] The liquid entering the second sedimentation tank 2 undergoes further sedimentation treatment to remove solid particles and impurities. Simultaneously, the decontamination bacteria in the second sedimentation tank 2 continue to biodegrade the remaining pollutants in the liquid, achieving deep purification. The second pollution detection agency 203 (also using a water quality analyzer with the same detection indicators as the first pollution detection agency 106) monitors the pollutant concentration in the liquid in the second sedimentation tank 2 in real time. When the detected pollutant concentration is lower than a second preset value (the second preset value should be lower than the first preset value, for example, COD below 50 mg / L), the second solenoid valve 202 is activated, reinjecting the deeply treated liquid that meets discharge standards back into the groundwater body through the second outlet pipe 201, completing the groundwater pollution remediation process. After the waste material settled at the bottom of the first sedimentation tank 1 accumulates to a certain extent, the third solenoid valve 302 and the waste discharge pump 303 are activated, transporting the waste material to the waste pool 3 through the waste discharge pipe 301. The solid separation mesh 306 in the waste tank 3 (which can be made of stainless steel, with the aperture determined according to the size of the waste particles, for example, 5mm) can prevent solid particles in the waste from entering the return water pipe 304. When the return water pump 305 starts, it pumps the supernatant in the waste tank 3 after sedimentation and solid separation back to the first sedimentation tank 1 through the return water pipe 304, realizing the recycling of water resources and reducing water waste.

[0032] like Figure 1 As shown, the second sedimentation tank 2 is located higher than the first sedimentation tank 1, the first sedimentation tank 1 is located higher than the groundwater body, and the waste tank 3 is located higher than the second sedimentation tank 2. By setting the positions, gravity is used to discharge materials and liquids, thus saving energy.

[0033] Both the primary pollution detection unit and the secondary pollution detection unit 203 are equipped with water quality analyzers. When the water quality analyzer detects that the pollutant concentration reaches a corresponding preset value, the PLC automatically sends a signal to control the start and stop of the solenoid valves and pumps. For example, when the water quality analyzer in the first sedimentation tank 1 detects that the COD is below 120 mg / L, the PLC sends a signal to start the first solenoid valve 104 and the first discharge pump 105; when the water quality analyzer in the second sedimentation tank 2 detects that the COD is below 60 mg / L, the PLC sends a signal to start the second solenoid valve 202.

[0034] like Figure 2 As shown, the adsorbent dispensing mechanism includes a first storage tank 401 for holding the adsorbent. A first injection pipe 402 is connected to the bottom of the first storage tank 401. A first rotating nozzle 403 is rotatably connected to the bottom of the first injection pipe 402. A first discharge pump 404 is installed on the first injection pipe 402. A first timing unit 405 is installed outside the first storage tank 401. The first discharge pump 404 is started intermittently according to the interval set by the first timing unit 405. Both the first discharge pump 404 and the second discharge pump 504 are equipped with control valves.

[0035] The first storage tank 401 is used to hold the adsorbent, providing a stable source of adsorbent for the entire adsorption process. The adsorbent can be activated carbon, zeolite, or other substances with a large specific surface area and strong adsorption capacity, capable of adsorbing organic pollutants, heavy metal ions, and other impurities in groundwater. The first timing unit 405 is set with a set interval time. When the set time interval is reached, it sends a start signal to the first discharge pump 404. For example, the first discharge pump 404 is set to start every 2 hours (the specific interval time can be determined experimentally based on factors such as the degree of groundwater pollution and the adsorbent's adsorption capacity). After the first discharge pump 404 starts, it generates pressure to transport the adsorbent in the first storage tank 401 through the first injection pipe 402. The first injection pipe 402 serves as a transport channel, ensuring that the adsorbent can smoothly reach the delivery point from the storage tank. The first rotary nozzle 403 is rotatably connected to the bottom of the first spray pipe 402. When the adsorbent flows out of the first spray pipe 402 and into the first rotary nozzle 403, it is evenly sprayed into the surrounding environment, such as the first sedimentation tank 1, as the first rotary nozzle 403 rotates. This allows the adsorbent to fully contact the liquid, improving the adsorption effect and more effectively removing pollutants from the liquid.

[0036] like Figure 3As shown, the decontamination bacteria dispensing mechanism includes a second storage tank 501 for holding the decontamination bacteria liquid. The bottom of the second storage tank 501 is connected to a second spray pipe 502. The bottom of the second spray pipe 502 is rotatably connected to a second rotating nozzle 503. A second discharge pump 504 is provided on the second spray pipe 502. A second timing unit 505 is provided outside the second storage tank 501. The second discharge pump 504 is started at intervals according to the interval time set by the second timing unit 505. A temperature control component is provided inside the second storage tank 501.

[0037] The second storage tank 501 serves as the storage container for the decontamination bacterial solution, providing a stable source of the solution throughout the entire application process. The combination of various species of Pseudomonas, Bacillus, and Sphingomonas in the decontamination bacterial solution can grow and reproduce using pollutants in the groundwater as a nutrient source. Through biological metabolism, it decomposes the pollutants into harmless substances such as carbon dioxide, water, and simple inorganic matter, thereby purifying the groundwater. The second timing unit 505 is set with a predetermined interval. When the set time interval is reached, it sends a start signal to the second discharge pump 504. For example, the second discharge pump 504 can be set to start every 1.5 hours (the specific interval can be determined experimentally based on factors such as the degree of groundwater pollution, the growth and reproduction rate of the decontamination bacteria, and their metabolic capacity). This ensures the timely and quantitative application of the decontamination bacterial solution, guaranteeing the continuous effect of the decontamination bacteria in the groundwater.

[0038] After the second discharge pump 504 starts, it generates pressure to transport the decontamination bacterial solution in the second storage tank 501 through the second spray pipe 502. The second spray pipe 502 serves as a transport channel, ensuring that the decontamination bacterial solution can smoothly reach the dispensing point from the storage tank. The second rotary nozzle 503 is rotatably connected to the bottom of the second spray pipe 502. When the decontamination bacterial solution flows out of the second spray pipe 502 and into the second rotary nozzle 503, it is evenly sprayed into the surrounding environment, such as into the second sedimentation tank 2, as the second rotary nozzle 503 rotates. This allows the decontamination bacterial solution to fully contact the liquid, increasing the contact probability between the decontamination bacteria and pollutants, and enhancing the decontamination effect.

[0039] like Figure 3As shown, the temperature control component includes a temperature sensor 506 disposed within the second storage tank 501. An electric heating arc plate 507 and a semiconductor cooling arc plate 508 are embedded in the inner wall of the second storage tank 501. The temperature control component includes a control unit. The temperature sensor 506, through the control unit and based on a preset temperature range, controls the opening and closing of the electric heating arc plate 507 and the semiconductor cooling arc plate 508. The temperature sensor 506 monitors the temperature of the decontamination bacterial solution in the second storage tank 501 in real time and transmits the temperature data to the control unit. The control unit determines whether the current temperature is within a reasonable range based on a preset temperature range (e.g., a preset temperature range of 25-30℃, determined according to the optimal growth temperature of each bacterial species in the decontamination bacterial group). If the temperature is lower than the lower limit of the preset range, the control unit activates the electric heating arc plate 507, which heats up the tank and raises the temperature inside. If the temperature is higher than the upper limit of the preset range, the control unit activates the semiconductor cooling arc plate 508, which cools down the tank and lowers the temperature inside. This maintains the decontamination bacteria liquid in a suitable growth temperature environment and ensures the activity and metabolic capacity of the decontamination bacteria.

[0040] like Figure 4 As shown, a cleaning motor 601 is embedded in the center of the bottom of the first sedimentation tank 1. A cleaning scraper 602 is fixedly connected to the output shaft of the cleaning motor 601. The bottom of the cleaning scraper 602 slides against the bottom surface of the first sedimentation tank 1. After solid impurities are scraped up, they can be discharged through the waste pipe 301 to the waste tank 3. During the wastewater treatment process in the first sedimentation tank 1, solid impurities in the wastewater gradually settle and accumulate at the bottom of the tank due to gravity. When the cleaning motor 601 starts, its output shaft begins to rotate. Since the cleaning scraper 602 is fixedly connected to the output shaft, it will perform a circular motion. Because the bottom of the cleaning scraper 602 slides against the bottom surface of the first sedimentation tank 1, during rotation, it acts like a "pusher," scraping up the solid impurities accumulated at the bottom of the tank and pushing them along the bottom towards the edge of the sedimentation tank. When these scraped-up solid impurities reach the pre-set waste discharge pipe 301 at the edge of the sedimentation tank, they will flow into the waste pool 3 along the waste discharge pipe 301, thereby cleaning the solid impurities in the first sedimentation tank 1 and ensuring the normal operation and sedimentation effect of the sedimentation tank.

[0041] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. A treatment device for groundwater pollution remediation, characterized in that, The system includes a first sedimentation tank (1), an inlet pipe (101) connected to one side of the first sedimentation tank (1), the inlet pipe (101) being connected to groundwater, an inlet pump (102) installed on the inlet pipe (101), a first outlet pipe (103) connected to one side of the first sedimentation tank (1), the first outlet pipe (103) being connected to a second sedimentation tank (2), a first solenoid valve (104) and a first outlet pump (105) installed on the first outlet pipe (103), an adsorbent dispensing mechanism installed on the first sedimentation tank (1), and decontamination bacteria dispensing mechanisms installed on both the first sedimentation tank (1) and the second sedimentation tank (2). A first pollution detection mechanism (106) is installed at the connection between the first outlet pipe (103) and the first sedimentation tank (1). When the first pollution detection mechanism (106) detects that the pollutant concentration is lower than a first preset value, the first solenoid valve (104) and the first outlet pump (105) are activated. A second outlet pipe (201) is connected above one side of the second sedimentation tank (2). A second solenoid valve (202) is installed on the second outlet pipe (201). The second outlet pipe (201) is connected to the groundwater body. A second pollution detection mechanism (203) is installed at the connection between the second outlet pipe (201) and the second sedimentation tank (2). When the second pollution detection mechanism (203) detects that the pollutant concentration is lower than the second preset value, the second solenoid valve (202) is activated. The first preset value is greater than the second preset value. The bottom of one side of the first sedimentation tank (1) is connected to a waste discharge pipe (301). A third solenoid valve (302) and a waste discharge pump (303) are installed on the waste discharge pipe (301). The waste discharge pipe (301) is connected to a waste tank (3). The top of one side of the waste tank (3) is connected to the first sedimentation tank (1) through a return water pipe (304). A return water pump (305) is installed on the return water pipe (304). A solid isolation net (306) is installed at the connection between the return water pipe (304) and the waste tank (3).

2. The treatment device for groundwater pollution remediation according to claim 1, characterized in that, The second sedimentation tank (2) is located higher than the first sedimentation tank (1), the first sedimentation tank (1) is located higher than the groundwater body, and the waste tank (3) is located higher than the first sedimentation tank (1).

3. The treatment device for groundwater pollution remediation according to claim 2, characterized in that, Both the first pollution detection unit (106) and the second pollution detection unit (203) are equipped with water quality testing instruments.

4. The treatment device for groundwater pollution remediation according to claim 3, characterized in that, The adsorbent dispensing mechanism includes a first storage tank (401) for holding the adsorbent, a first injection pipe (402) connected to the bottom of the first storage tank (401), a first rotating nozzle (403) rotatably connected to the bottom of the first injection pipe (402), a first discharge pump (404) provided on the first injection pipe (402), a first timing unit (405) provided outside the first storage tank (401), and the first discharge pump (404) starting intermittently according to the interval time set by the first timing unit (405).

5. The treatment device for groundwater pollution remediation according to claim 4, characterized in that, The decontamination bacteria dispensing mechanism includes a second storage tank (501) for holding the decontamination bacteria liquid. The bottom of the second storage tank (501) is connected to a second spray pipe (502). The bottom of the second spray pipe (502) is rotatably connected to a second rotating nozzle (503). A second discharge pump (504) is provided on the second spray pipe (502). A second timing unit (505) is provided outside the second storage tank (501). The second discharge pump (504) is started at intervals according to the interval time set by the second timing unit (505). A temperature control component is provided inside the second storage tank (501).

6. The treatment device for groundwater pollution remediation according to claim 5, characterized in that, The temperature control component includes a temperature sensor (506) disposed in a second storage tank (501). An electric heating arc plate (507) and a semiconductor cooling arc plate (508) are embedded in the inner wall of the second storage tank (501). The temperature control component includes a control unit. The temperature sensor (506) controls the opening or closing of the electric heating arc plate (507) and the semiconductor cooling arc plate (508) through the control unit and according to a preset temperature range.

7. The treatment device for groundwater pollution remediation according to claim 6, characterized in that, The decontamination bacteria specifically include a combination of various species of Pseudomonas, Bacillus, and Sphingomonas.

8. A treatment device for groundwater pollution remediation according to claim 7, characterized in that, A cleaning motor (601) is embedded at the center of the bottom of the first sedimentation tank (1). The output shaft of the cleaning motor (601) is fixedly connected to a cleaning scraper (602). The bottom of the cleaning scraper (602) slides against the bottom surface of the first sedimentation tank (1).

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