CN217498872U - Groundwater pollution treatment device - Google Patents
Groundwater pollution treatment device Download PDFInfo
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- CN217498872U CN217498872U CN202122662938.8U CN202122662938U CN217498872U CN 217498872 U CN217498872 U CN 217498872U CN 202122662938 U CN202122662938 U CN 202122662938U CN 217498872 U CN217498872 U CN 217498872U
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Abstract
The utility model discloses a groundwater pollution treatment device, including extraction device, extraction device is connected with controlling means and storage device respectively, and controlling means is connected with the extraction device communication, storage device's import and extraction device's exit linkage, storage device's exit linkage has purifier. The extraction device extracts the underground water and stores the underground water in the storage device, and the thickness of the oil layer in the underground water and the oil content in the polluted area are estimated by observing the oil amount in the underground water displayed by the storage device. The extraction device transmits the conductivity of the underground water to the control device in real time in the process of pumping the underground water, and the control device controls the operation or stop of the extraction device. And (3) sending the underground water into a purification device at the bottom of the storage device, and purifying the underground water through the purification device to enable the underground water to reach the underground water quality standard. The oil in the underground water is directly collected at the upper part of the storage device, so that the purposes of automatically controlling the oil extraction and purifying the underground water and repairing the underground water are achieved.
Description
Technical Field
The utility model relates to an underground water ring environmental protection technical field especially relates to an underground water pollution treatment device.
Background
In the process of petroleum extraction, production, storage and transportation, refining and construction and use. Because of mishandling or dangerous accidents, which often result in the spillage of large quantities of petroleum hydrocarbons, soil and groundwater are contaminated when appropriate measures are not taken. The presence of pollutants can have serious adverse effects on nearby human bodies and the surrounding environment, and can endanger the life safety of people in serious cases.
At present, aiming at the condition of petroleum polluted underground water, 5 repair measures mainly comprise an extraction treatment technology, a chemical oxidation technology, an in-situ aeration technology, a thermal desorption technology and an in-situ bioremediation technology, wherein the extraction treatment technology is the most extensive underground water repair method at present, and a certain number of vertical drill holes are distributed in a polluted area, and then organic or inorganic pollutants in the underground water in the polluted area are removed in a water pump water pumping mode. From the efficiency, investment cost and universality analysis of the repair, there are still two obvious drawbacks, first: when the underground water level is determined to be buried deeply for pumping water, if the water pump is placed shallowly, the pumping effect is good, but the situation that the water pump is empty in a short time is caused, and if the water pump is placed too deeply, the underground water pumped by the water pump contains less oil, a large amount of underground water is pumped, so that resource waste is caused, and the efficiency is low; in addition, the underground water is hazardous to waste after being pumped out, so the treatment of oily wastewater also increases the investment cost.
Therefore, the problems of the current extraction processing technology are as follows: if the suction pump is placed shallowly, a large amount of sewage is pumped out, which wastes resources and is inefficient, and the pumped-out groundwater is treated at a high cost.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model provides an underground water pollution treatment device separates through extraction device, controlling means, storage device and purifier and draws to the oil of groundwater.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
the utility model provides an underground water pollution treatment device, includes extraction device, and extraction device is connected with controlling means and storage device respectively, and controlling means and extraction device communication are connected, and storage device's import and extraction device's exit linkage, storage device's exit linkage has purifier.
The extraction device is used for pumping underground water in the pollution area to the storage device and transmitting the conductivity of the mixed liquid to the control device.
The control device is used for displaying the conductivity, sending out an alarm signal and controlling the extraction device to start and stop.
The storage device is used for conveying the underground water to the purification device.
The purification device is used for separating underground water.
Compared with the prior art, the utility model has the advantages of it is following: the extraction device extracts the underground water and stores the underground water in the storage device, and the thickness of the oil layer in the underground water and the oil content in the polluted area are estimated by observing the oil amount in the underground water displayed by the storage device. The extraction device transmits the conductivity of the underground water to the control device in real time in the process of pumping the underground water, and the control device controls the operation or stop of the extraction device. And (3) sending the underground water into a purification device at the bottom of the storage device, and purifying the underground water through the purification device to enable the underground water to reach the underground water quality standard. The oil in the underground water is directly collected at the upper part of the storage device, so that the purposes of automatically controlling the oil extraction and purifying the underground water and repairing the underground water are achieved.
More preferably: the extraction device comprises a water pump, wherein an inlet pipeline of the water pump is provided with a conductivity sensor, and the conductivity sensor is fixed at the inlet of the water pump. The outlet of the water pump is connected with the inlet of the storage device, a fixing piece is arranged on an outlet pipeline of the water pump, the fixing piece is fixed on the ground of the pollution area, and the fixing piece is used for fixing the outlet pipeline of the water pump.
By adopting the technical scheme, the outlet pipeline of the water pump is fixed on the ground of the polluted area through the fixing piece, so that the stability of the water pump is ensured. And in the process of pumping the underground water by the water pump, the conductivity sensor transmits the conductivity of the underground water to the control device in real time, and the control device controls the operation or stop of the water pump.
More preferably: the storage device comprises a storage tank, and an inlet of the storage tank is connected with an outlet of the water pump. Be provided with liquid level communicating pipe and vent valve on the outer wall of storage jar, the bottom of liquid level communicating pipe and the lower part outer wall intercommunication of storage jar, the top of liquid level communicating pipe is provided with liquid level transmitter, liquid level transmitter's tip and the outer wall connection of storage jar, liquid level communicating pipe is used for showing the liquid level of oil in the groundwater.
The outlet pipeline of storage jar is last to be provided with the intercommunication valve, and the intercommunication valve is dismantled and is connected on the pipeline of storage jar, and liquid level transmitter's signal end is interlocked with oil drain valve, intercommunication valve electricity respectively. The communicating valve is used for controlling the circulation and the cutting-off of the underground water in an electric interlocking way.
The inlet of the oil drain valve is fixedly connected with the outer wall of the storage tank, and the oil drain valve is used for controlling the drainage of oil in underground water.
By adopting the technical scheme, the underground water is temporarily stored in the storage tank after being pumped out, the thickness of an oil layer in the underground water is observed in real time through the liquid level communicating pipe, and the oil content in the underground water of the polluted area is estimated approximately. When the liquid level of the underground water in the storage tank reaches the top of the storage tank, the oil discharge valve is automatically opened to discharge the oil on the upper surface of the underground water. When the liquid level of storage tank bottom outlet pipe reachd the liquid level minimum of setting for, the intercommunication valve is automatic to be opened, carries groundwater to purifier and purifies, realizes tentatively carrying out water oil separating's process, for subsequent purifier purifies groundwater and reduces work load, facilitates, extension purifier's life.
More preferably: the outlet of the oil discharge valve is connected with an oil storage tank, and the oil storage tank is used for storing oil in underground water.
Adopt above-mentioned technical scheme, when groundwater reached the top of liquid level arrival storage jar in the storage jar, the oil drain valve was automatic to be opened, discharges the oil of groundwater upper surface to the oil storage tank, realizes the oil of tentatively collecting the groundwater.
The method is further optimized as follows: the control device comprises a controller and a display, the controller is in data connection with the display, and a signal end of the display is in communication connection with the conductivity sensor.
The signal end of controller is electric connection respectively has first alarm and second alarm, and first alarm is used for drawing the warning when having accomplished water, and the second alarm is used for drawing the warning when having accomplished oil.
By adopting the technical scheme, the display displays the conductivity of underground water near the inlet of the water suction pump in real time, when the inlet of the water suction pump enters oil, the conductivity sensor transmits the conductivity of the oil to the display, the conductivity displayed by the display suddenly drops, and transmits data information indicating that the conductivity suddenly drops to the controller, the controller receives the data information and then controls the first alarm to give an alarm to prompt that the oil pumping stage is started, when the oil layer is pumped out, the water enters the position near the water suction pump, the conductivity sensor transmits the conductivity of the water to the display, the display displays that the conductivity suddenly rises and transmits the data information indicating that the conductivity suddenly rises to the controller, the controller receives the data information and then controls the second alarm to give an alarm to prompt that the water pumping stage is started, and meanwhile, the water suction pump is controlled to stop working.
The method is further optimized as follows: purifier includes purifying tank and adsorbent, and the adsorbent setting is in the inside of purifying tank, and the import of purifying tank and the exit linkage of intercommunication valve.
By adopting the technical scheme, the oil in the groundwater is adsorbed by the adsorbent, so that the aim of further purifying the groundwater is fulfilled.
The method is further optimized as follows: the adsorbent is activated carbon.
By adopting the technical scheme, the active carbon is mainly used for adsorbing organic matters in the underground water, so that the pollution of the organic matters to the sewage is avoided.
The method is further optimized as follows: the adsorbent is zero-valent iron.
By adopting the technical scheme, zero-valent iron is selected to adsorb heavy metal in the sewage, so that the content of the heavy metal in the underground water is reduced.
The method is further optimized as follows: the liquid level communicating pipe is made of polytetrafluoroethylene materials.
By adopting the technical scheme, the liquid level communicating pipe made of the polytetrafluoroethylene material is selected, so that the phenomenon of breakage caused by corrosion of the liquid level communicating pipe by organic matters in pollutants is prevented.
Drawings
FIG. 1 is a schematic diagram of a system configuration of a processing apparatus;
reference numerals: 1-a control device; 11-a controller; 12-a first alarm; 13-a second alarm; 14-a display; 2-a storage device; 20-a storage tank; 21-liquid level communicating pipe; 22-a communication valve; 23-an oil drain valve; 24-an oil storage tank; 25-a liquid level meter; 26-a level transmitter; 3-a purification device; 31-an adsorbent; 32-a purification tank; 4-an extraction device; 41-a conductivity sensor; 42-a water pump; 43-a fixing member; 5-contaminated area.
Detailed Description
The present invention will be described in further detail with reference to fig. 1.
The utility model provides an underground water pollution treatment device, as shown in figure 1, includes extraction device 4, and extraction device 4 is connected with controlling means 1 and storage device 2 respectively, and controlling means 1 and extraction device 4 communication are connected, and the import of storage device 2 and the exit linkage of extraction device 4, and the exit linkage of storage device 2 has purifier 3.
The extraction device 4 is used for pumping underground water in the polluted area 5 to the storage device 2 and transmitting the conductivity of the mixed liquid to the control device 1.
The control device 1 is used for displaying the conductivity, sending out an alarm signal and controlling the extraction device 4 to start and stop.
The storage means 2 is used to transport groundwater to the purification means 3.
The purification device 3 is used for separating groundwater.
The extraction device 4 extracts the groundwater and stores the groundwater in the storage device 2, and the thickness of the oil layer in the groundwater and the oil content in the polluted area 5 are estimated by observing the amount of the groundwater oil displayed by the storage device 2. The extraction device 4 transmits the conductivity of the groundwater to the control device 1 in real time during the process of extracting the groundwater, and the control device 1 controls the operation or stop of the extraction device 4. The groundwater is fed into the purification device 3 at the bottom of the storage device 2, and the groundwater is purified by the purification device 3 to reach the groundwater quality standard. The oil in the underground water is directly collected at the upper part of the storage device 2, so that the purposes of automatically controlling the oil extraction and purifying the underground water and repairing the underground water are achieved.
Specifically, in this embodiment, the extraction device 4 includes a water pump 42, a conductivity sensor 41 is disposed at an inlet pipe of the water pump 42, and the conductivity sensor 41 is fixed at an inlet of the water pump 42, so as to ensure accuracy of conductivity transmission by the conductivity sensor 41. The outlet of the water pump 42 is connected with the inlet of the storage device 2, a fixing member 43 is arranged on the outlet pipeline of the water pump 42, the fixing member 43 is fixed on the ground of the pollution area 5, and the fixing member 43 is used for fixing the outlet pipeline of the water pump 42. The suction pump 42 is an antistatic suction pump.
The outlet pipe of the suction pump 42 is fixed on the ground of the contaminated area 5 by a fixing member 43, ensuring the stability of the suction pump 42. In the process of pumping the underground water by the water pump 42, the conductivity sensor 41 transmits the conductivity of the underground water to the control device 1 in real time, and the control device 1 controls the operation or stop of the water pump 42.
Specifically, in the present embodiment, the storage device 2 includes a storage tank 20, and an inlet of the storage tank 20 is connected to an outlet of the suction pump 42. The outer wall of the storage tank 20 is provided with a liquid level communicating pipe 21 and an oil discharge valve 23, the bottom of the liquid level communicating pipe 21 is communicated with the outer wall of the lower part of the storage tank 20, the top of the liquid level communicating pipe 21 is provided with a liquid level transmitter 25, the end part of the liquid level transmitter 25 is connected with the outer wall of the storage tank 20, and the liquid level communicating pipe 21 is used for displaying the liquid level of oil in underground water. The liquid level communicating pipe 21 is a U-shaped pipe, and the liquid level communicating pipe 21 is provided with a scale mark, so that the thickness of an oil layer in the underground water in the storage tank can be visually displayed, and the purpose of estimating the oil content in the underground water in the polluted area 5 is achieved.
The outlet pipelines of the storage tank 20 are respectively provided with a communication valve 22, the communication valves 22 are detachably connected on the pipelines of the storage tank 20, and the signal ends of the liquid level transmitter 25 are respectively electrically interlocked with an oil discharge valve 23 and the communication valves 22. The communication valve 22 is used for electrically interlocking and controlling the flow and shutoff of the groundwater. The material of the storage tank 20 is stainless steel.
The inlet of the oil drain valve 23 is fixedly connected with the outer wall of the storage tank 20, so that the surface oil layer of the underground water is drained.
The underground water is pumped out and temporarily stored in the storage tank 20, and the thickness of the oil layer in the underground water is observed in real time through the liquid level communicating pipe 21, and the oil content in the underground water in the polluted region 5 is estimated approximately. When the level of groundwater in the storage tank 20 reaches the top of the storage tank 20, the level transmitter 25 transmits a signal indicating that the level is high to the drain valve 23, and the drain valve 23 automatically opens to drain the oil from the upper surface of the groundwater. When the liquid level of storage jar 20 bottom outlet pipe reached the liquid level minimum of setting for, liquid level transmitter 25 will show that the signal transmission that the liquid level is minimum gives intercommunication valve 22, and intercommunication valve 22 is automatic to be opened, carries groundwater to purifier 3 and purifies, realizes tentatively carrying out oil water separating's process, for subsequent purifier 3 purifies groundwater and reduces work load, facilitates, extension purifier 3's life.
Specifically, in the present embodiment, an outlet of the oil discharge valve 23 is connected to an oil storage tank 24, and the oil storage tank 24 is used for storing oil in the ground water.
When the liquid level of the underground water in the storage tank 20 reaches the top of the storage tank 20, the oil discharge valve 23 is automatically opened, and the oil on the upper surface of the underground water is discharged to the oil storage tank 24, so that the oil in the underground water is preliminarily collected.
Specifically, in the present embodiment, the control device 1 includes a controller 11 and a display 14, the controller 11 is in data connection with the display 14, and a signal terminal of the display 14 is in communication connection with the conductivity sensor 41.
The signal end of controller 11 is electric connection respectively has first alarm 12 and second alarm 13, and first alarm 12 is used for drawing warning when having accomplished water, and second alarm 13 is used for drawing warning when having accomplished oil.
The display 14 displays in real time the conductivity of the groundwater near the inlet of the suction pump 42, as the suction pump 42 enters the oil, the conductivity sensor 41 transmits the conductivity of the oil to the display 14, the conductivity displayed by the display 14 suddenly drops, and the data information indicating the sudden drop of the conductivity is transmitted to the controller 11, the controller 11 receives the data information and then controls the first alarm 12 to give an alarm to prompt the oil pumping stage, when the oil layer is pumped out, the water enters near the suction pump 42, the conductivity sensor 41 transmits the conductivity of the water to the display 14, the display 14 displays that the conductivity suddenly rises, and the data information for marking the sudden rise of the conductivity is transmitted to the controller 11, and the controller 11 receives the data information and then controls the second alarm 13 to give an alarm to prompt that the water pumping stage is started, and simultaneously controls the water pumping pump 42 to stop working.
Specifically, the purification device 3 in this embodiment includes a purification tank 32 and an adsorbent 31, the adsorbent 31 is disposed inside the purification tank 32, an inlet of the purification tank 32 is connected to an outlet of the communication valve 22, and the adsorbent 31 adsorbs oil in the groundwater, thereby further purifying the groundwater. The purification tank 32 is made of stainless steel, and the adsorbent 31 is placed inside the purification tank.
Specifically, adsorbent 31 selects for use active carbon in this embodiment, selects for use active carbon mainly to adsorb the organic matter in the groundwater, and the pollution of dead organic matter to launching.
Specifically, zero-valent iron is selected for use as the adsorbent 31 in this embodiment, and the zero-valent iron is selected for use to adsorb heavy metals in the groundwater, so as to reduce the content of heavy metals in the groundwater.
Specifically, the material of liquid level communicating pipe 21 chooses polytetrafluoroethylene material for use in this embodiment, chooses liquid level communicating pipe 21 that polytetrafluoroethylene material made for use, prevents that the organic matter in the pollutant from corroding liquid level communicating pipe 21 and causing cracked phenomenon.
The working principle is as follows:
referring to fig. 1, the working principle of the groundwater pollution treatment apparatus is described as follows:
the conductivity sensor 41 is disposed near the inlet of the suction pump 42 to detect the conductivity of the groundwater at the inlet of the suction pump 42 in real time. In the groundwater, since the conductivity of the water layer is greater than that of the oil layer, it is judged whether the groundwater pumped out by the water pump 42 is the oil layer or the water layer in real time by a sudden change in conductivity on the display 14.
Operation starts suction pump 42 on display 14, and display 14 will start this information transmission of drawing water for controller 11, and controller 11 remote wireless control suction pump 42 starts (this technique is current disclosure technique, through purchasing controller 11, display 14 to the equipment is built and is controlled suction pump 42 and can realize, it is not the utility model discloses the scope of protection, so do not describe repeatedly), draws groundwater from contaminated area 5 to storage jar 20 temporary storage after suction pump 42 starts. In the working process of the water suction pump 42, the conductivity sensor 41 detects the conductivity of the underground water near the inlet of the water suction pump 42 in real time and transmits the conductivity to the display 14, when the inlet of the water suction pump 42 enters oil, the conductivity on the display 14 rapidly drops, data information indicating that the conductivity suddenly drops is transmitted to the controller 11, and the controller 11 receives the data information and then controls the first alarm 12 to give an alarm to prompt the entering of an oil pumping stage. When the oil layer is pumped, water enters the position near the water suction pump 42, the conductivity sensor 41 transmits the conductivity of the water to the display 14, the display 14 displays that the conductivity rises rapidly, data information for identifying the sudden rise of the conductivity is transmitted to the controller 11, the controller 11 receives the data information and controls the second alarm 13 to give an alarm to prompt the water suction stage to enter, and meanwhile, the water suction pump 42 is controlled to stop working, so that the process of pumping underground water once is completed.
When the liquid of groundwater reaches the top of storage jar 20, the signal transmission that the liquid level transmitter 25 transmitted shows high liquid level transmits for oil drain valve 23, and oil drain valve 23 opens, and the oil on groundwater surface gets into oil storage tank 24, carries out primary separation to the oil water that groundwater got into. When level gauge 25's liquid level value reached preset low liquid level simultaneously, liquid level transmitter 25 will show that the low signal transmission of liquid level gives intercommunication valve 22, and intercommunication valve 22 receives the signal after automatic opening, and groundwater is carried to purification tank 32 from the bottom of storage jar 20, in purification tank 32, reaches the purpose of purifying groundwater by the pollutant in the absorbent 31 daughter-in-law groundwater.
In summary, the extraction device 4 extracts the groundwater and stores the groundwater in the storage device 2, and the thickness of the oil layer in the groundwater and the oil content in the polluted area 5 are estimated by observing the amount of the groundwater oil displayed by the storage device 2. The extraction device 4 transmits the conductivity of the groundwater to the control device 1 in real time during the process of extracting the groundwater, and the control device 1 controls the operation or stop of the extraction device 4. The groundwater is fed into the purification device 3 at the bottom of the storage device 2, and the groundwater is purified by the purification device 3 to reach the groundwater quality standard. The oil in the groundwater is directly collected at the upper part of the storage device 2, the groundwater is automatically controlled to be pumped out, separated and purified, and the purpose of groundwater remediation is achieved.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the present invention.
Claims (9)
1. The utility model provides an underground water pollution treatment device which characterized in that: the device comprises an extraction device (4), wherein the extraction device (4) is respectively connected with a control device (1) and a storage device (2), the control device (1) is in communication connection with the extraction device (4), an inlet of the storage device (2) is connected with an outlet of the extraction device (4), and an outlet of the storage device (2) is connected with a purification device (3);
the extraction device is used for pumping underground water in the polluted area (5) to the storage device (2) and transmitting the conductivity of the mixed liquor to the control device (1);
the control device (1) is used for displaying the conductivity, sending out an alarm signal and controlling the extraction device (4) to start and stop;
the storage device (2) is used for conveying the underground water to the purification device (3);
the purification device (3) is used for separating the groundwater.
2. A groundwater pollution treatment apparatus as claimed in claim 1, wherein: the extraction device (4) comprises a water suction pump (42), an inlet pipeline of the water suction pump (42) is provided with a conductivity sensor (41), and the conductivity sensor (41) is fixed at an inlet of the water suction pump (42); the export of suction pump (42) with the access connection of storage device (2), be provided with mounting (43) on the export pipeline of suction pump (42), mounting (43) are fixed in the subaerial of contaminated area (5), mounting (43) are used for the export pipeline of fixed real-time suction pump (42).
3. A groundwater pollution treatment apparatus as claimed in claim 2, wherein: the storage device (2) comprises a storage tank (20), and an inlet of the storage tank (20) is connected with an outlet of the water suction pump (42); a liquid level communicating pipe (21) and an oil discharge valve (23) are arranged on the outer wall of the storage tank (20), the bottom of the liquid level communicating pipe (21) is communicated with the outer wall of the lower part of the storage tank (20), a liquid level transmitter (25) is arranged at the top of the liquid level communicating pipe (21), the end part of the liquid level transmitter (25) is connected with the outer wall of the storage tank (20), and the liquid level communicating pipe (21) is used for displaying the liquid level of oil in the underground water;
a communication valve (22) is arranged on an outlet pipeline of the storage tank (20), the communication valve (22) is detachably connected to the pipeline of the storage tank (20), and a signal end of the liquid level transmitter (25) is electrically interlocked with the oil discharge valve (23) and the communication valve (22) respectively; the communication valve (22) is used for controlling the circulation and the cutting off of the underground water in an electric interlocking way;
the inlet of the oil drain valve (23) is fixedly connected with the outer wall of the storage tank (20), and the oil drain valve (23) is used for controlling the discharge of oil in the underground water.
4. A groundwater contamination treatment apparatus as claimed in claim 3, wherein: the outlet of the oil discharge valve (23) is connected with an oil storage tank (24), and the oil storage tank (24) is used for storing oil in the underground water.
5. A groundwater contamination treatment apparatus as claimed in claim 3, wherein: the control device (1) comprises a controller (11) and a display (14), wherein the controller (11) is in data connection with the display (14), and a signal end of the display (14) is in communication connection with the conductivity sensor (41);
the signal end of controller (11) electric connection has first alarm (12) and second alarm respectively, first alarm (12) are used for drawing when having finished water and report to the police, the second alarm is used for drawing when having finished oil and reports to the police.
6. A groundwater contamination treatment apparatus as claimed in claim 3, wherein: the purification device (3) comprises a purification tank (32) and an adsorbent (31), wherein the adsorbent (31) is arranged in the purification tank (32), and an inlet of the purification tank (32) is connected with an outlet of the communication valve (22).
7. A groundwater contamination treatment apparatus as claimed in claim 6, wherein: the adsorbent (31) is activated carbon.
8. A groundwater contamination treatment apparatus as claimed in claim 6, wherein: the adsorbent (31) is selected from zero-valent iron.
9. A groundwater contamination treatment apparatus as claimed in claim 3, wherein: the liquid level communicating pipe (21) is made of polytetrafluoroethylene materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122662938.8U CN217498872U (en) | 2021-11-02 | 2021-11-02 | Groundwater pollution treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122662938.8U CN217498872U (en) | 2021-11-02 | 2021-11-02 | Groundwater pollution treatment device |
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| Publication Number | Publication Date |
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| CN217498872U true CN217498872U (en) | 2022-09-27 |
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| CN202122662938.8U Active CN217498872U (en) | 2021-11-02 | 2021-11-02 | Groundwater pollution treatment device |
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| CN (1) | CN217498872U (en) |
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2021
- 2021-11-02 CN CN202122662938.8U patent/CN217498872U/en active Active
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