CN220056408U - Groundwater pollution remediation experimental device - Google Patents
Groundwater pollution remediation experimental device Download PDFInfo
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- CN220056408U CN220056408U CN202321465672.0U CN202321465672U CN220056408U CN 220056408 U CN220056408 U CN 220056408U CN 202321465672 U CN202321465672 U CN 202321465672U CN 220056408 U CN220056408 U CN 220056408U
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- 238000005067 remediation Methods 0.000 title claims abstract description 24
- 238000003895 groundwater pollution Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 163
- 238000005070 sampling Methods 0.000 claims abstract description 38
- 238000011084 recovery Methods 0.000 claims abstract description 26
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 26
- 239000010865 sewage Substances 0.000 claims abstract description 24
- 238000003860 storage Methods 0.000 claims abstract description 11
- 238000003911 water pollution Methods 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 230000008439 repair process Effects 0.000 claims abstract description 9
- 239000000945 filler Substances 0.000 claims abstract description 6
- 239000002689 soil Substances 0.000 claims abstract description 5
- 238000002474 experimental method Methods 0.000 claims description 10
- 230000002572 peristaltic effect Effects 0.000 claims description 3
- 239000004746 geotextile Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 14
- 238000001179 sorption measurement Methods 0.000 description 8
- 238000011065 in-situ storage Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000035699 permeability Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000003673 groundwater Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000013310 covalent-organic framework Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000012621 metal-organic framework Substances 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005520 electrodynamics Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses an underground water pollution remediation experimental device, which comprises a liquid supply device, a reaction tank and a sample collection and recovery device; the reaction tank is internally provided with an upstream water-containing layer, a reaction wall and a downstream water-containing layer in sequence from left to right, wherein the reaction wall is internally used for filling water pollution repair filler, and the upstream water-containing layer and the downstream water-containing layer are internally used for filling soil samples in a groundwater pollution area; the liquid supply device comprises a water storage tank, a water inlet pump and a water inlet pipe, wherein the water inlet pump pumps sewage in the water storage tank into an upstream water-containing layer of the reaction tank through the water inlet pipe; the sample collection and recovery device comprises a water outlet pipe, a sampling bottle and a recovery water tank, wherein one end of the water outlet pipe is communicated with the downstream aquifer, and the other end of the water outlet pipe is communicated with the sampling bottle and/or the recovery water tank. The underground water pollution repair experimental device provided by the utility model can simulate the actual repair process according to different situations on site, so that the actual post-construction treatment effect of a project is predicted.
Description
Technical Field
The utility model belongs to the technical field of polluted groundwater remediation, and particularly relates to an experimental device for groundwater pollution remediation.
Background
Common techniques for groundwater pollution treatment include extraction treatment, in situ aeration, in situ injection, in situ bioremediation, electrodynamic remediation, permeable Reactive Barrier (PRB) methods, etc. In terms of economy and long-term effectiveness, the in-situ remediation is the main aspect, and Permeable Reactive Barrier (PRB) is the most effective in-situ remediation technology for preventing and treating groundwater pollution. Whether the PRB technology is feasible and effective for a long time is the most critical or the adsorption material, but whether the novel adsorption material is developed or a simulation experiment is carried out on a specific project, an experimental device is an important tool. The traditional experimental device adopts a vertical water distribution mode, sewage flows through the adsorption material from top to bottom under the action of gravity, or the sewage flows through the adsorption material from bottom to top in a pumping mode, and the water distribution is carried out by utilizing gravity in the mode, so that the water uniformly flows through the adsorption material. However, in actual application of the PRB technology, most of groundwater flows horizontally, and the traditional experimental device is often far from the actual application; meanwhile, because the flow rate of groundwater in an actual repair site is low, the experimental process is long, and researchers are difficult to ensure sampling on time, so that samples in an ideal time period cannot be acquired.
Disclosure of Invention
The utility model aims to provide an underground water pollution remediation experimental device, which solves the technical problems that a traditional column reaction device in the prior art cannot objectively reflect the actual field treatment process, and deviation exists between the simulation experimental result and the actual use.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
an underground water pollution remediation experimental device is characterized in that: comprises a liquid supply device, a reaction tank and a sample collection and recovery device; the reaction tank is internally provided with an upstream water-containing layer, a reaction wall and a downstream water-containing layer in sequence from left to right, wherein the reaction wall is internally used for filling water pollution repair filler, and the upstream water-containing layer and the downstream water-containing layer are internally used for filling soil samples in a groundwater pollution area; the liquid supply device comprises a water storage tank, a water inlet pump and a water inlet pipe, wherein the water inlet pump pumps sewage in the water storage tank into an upstream water-containing layer of the reaction tank through the water inlet pipe; the sample collection and recovery device comprises a water outlet pipe, a sampling bottle and a recovery water tank, wherein one end of the water outlet pipe is communicated with the downstream aquifer, and the other end of the water outlet pipe is communicated with the sampling bottle and/or the recovery water tank.
During operation, sewage in the water storage tank enters the reaction tank through the water inlet pipe under the action of the water inlet pump, and the sewage sequentially passes through the upstream aquifer, the reaction wall and the downstream aquifer and is discharged after being repaired by the repairing filler in the reaction wall. According to actual needs, the sewage sample after the required treatment is collected through the sampling bottle, and other sewage is recovered through the recovery water tank.
Preferably, filter layers are arranged between the upstream water-bearing layer and the reaction wall as well as between the downstream water-bearing layer and the reaction wall.
Specifically, the filter layer is a sieve plate and geotextile.
Preferably, the water inlet pump is a peristaltic pump.
Preferably, the upstream water-bearing layer and the downstream water-bearing layer are both provided with vertically arranged water level meters, and the water level meters comprise a screen pipe and a pressure sensor, and the pressure sensor is arranged at the bottom of the screen pipe. According to the measurement data of the water level gauge, the pressure difference between the upstream water-bearing layer and the downstream water-bearing layer can be obtained, so that the pumping pressure of the water inlet pump is controlled, and the screen pipe is arranged to prevent soil and the like of the upstream water-bearing layer and the downstream water-bearing layer from affecting the measurement accuracy of the pressure sensor.
Preferably, the sample collecting and recovering device further comprises a funnel, a rotary water outlet pipe and a water outlet branch pipe; the water outlet end of the water outlet pipe stretches into the bucket cavity of the funnel, the bottom of the funnel is respectively communicated with the rotary water outlet pipe and the water outlet branch pipe, the water outlet branch pipe is communicated with the recovery water tank, and the rotary water outlet pipe is communicated with the sampling bottle. When a sewage water sample needs to be collected, sewage enters a sampling bottle through a rotary water outlet pipe to realize sampling; when sampling is not needed, the treated sewage is recovered through the recovery water tank.
Preferably, the rotary water outlet pipe is provided with an electromagnetic valve. Selecting whether to collect the sewage water sample or not by controlling the opening and closing of the electromagnetic valve, and opening the electromagnetic valve when the sewage water sample needs to be collected, wherein the sewage enters the sampling bottle through the rotary water outlet pipe to realize sampling; when sampling is not needed, the electromagnetic valve is closed, and the treated sewage is recovered through the recovery water tank.
Preferably, the sample collecting and recovering device further comprises a plurality of sampling bottles and steering gears, and the rotary water outlet pipe is driven by the steering gears to rotate around the hopper and is communicated with the corresponding sampling bottles. When collecting sewage water sample, the water sample flows through the solenoid valve and gets into rotatory outlet pipe, and rotatory outlet pipe can dock through rotatory and sampling bottle bottleneck by the steering wheel drive, and the water sample flows through rotatory outlet pipe and flows into the sampling bottle in, through the position of adjusting rotatory outlet pipe for rotatory outlet pipe and the butt joint of a plurality of different sampling bottle bottleneck positions, thereby can realize continuous sampling.
Preferably, the device further comprises a control unit, wherein the control unit is electrically connected with the water inlet pump, the pressure sensor, the electromagnetic valve and the steering engine. Through setting up the control unit to realize the automation control of experimental apparatus, for example: the pressure difference between the upstream aquifer and the downstream aquifer is controlled by controlling the pumping pressure of the water inlet pump, so that the pressure difference before and after the experimental device can be ensured to be stable, and a stable experimental environment can be created; the electromagnetic valve and the steering engine are controlled by setting the sampling time through the control unit, so that automatic sampling is realized, required samples can be reserved according to actual needs, the problem of mixed samples is avoided, and the test effect can be reflected to the greatest extent.
Compared with the prior art, the utility model has the following beneficial effects:
1. the underground water pollution remediation experimental device is suitable for simulating underground water treatment research of heavy metal pollution in different areas, particularly remote mountain areas, inconvenient traffic and tailing ponds lacking infrastructure, is designed based on actual application scenes of PRB technology, simulates an upstream aquifer, a reaction wall, a downstream aquifer, water head pressure and the like according to parameters such as soil permeability, pollutant types, underground water flow rate and the like of a remediation site, simulates an actual remediation process according to different situations of the site, and accordingly predicts the treatment effect after actual construction of a project.
2. The underground water pollution repair experimental device can realize full-automatic implementation of the experimental process through linkage of all the components, and realizes long-time and stable simulation of the actual repair process.
Drawings
FIG. 1 is a schematic structural diagram of an experimental device for repairing groundwater pollution.
In the figure:
1-liquid supply device, 11-water storage tank, 12-water inlet pump, 13-water inlet pipe, 2-reaction tank, 21-upstream aquifer, 22-reaction wall, 23-downstream aquifer, 24-fluviograph, 241-screen pipe, 242-pressure sensor, 3-sample collection and recovery device, 31-water outlet pipe, 32-sampling bottle, 33-recovery water tank, 34-funnel, 35-rotary water outlet pipe, 36-water outlet branch pipe, 37-electromagnetic valve and 4-control unit.
Detailed Description
The utility model will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. For convenience of description, the words "upper", "lower", "left" and "right" are used hereinafter to denote only the directions corresponding to the upper, lower, left, and right directions of the drawings, and do not limit the structure.
As shown in fig. 1, the groundwater pollution remediation experiment device of this embodiment includes a liquid supply device 1, a reaction tank 2, a sample collection and recovery device 3, and a control unit 4. The reaction tank 2 is internally provided with an upper part from left to rightThe water-bearing reactor comprises an upstream water-bearing layer 21, a reaction wall 22 and a downstream water-bearing layer 23, wherein a sieve plate and geotechnical cloth are arranged between the upstream water-bearing layer 21, the downstream water-bearing layer 23 and the reaction wall 22, and the reaction tank 2 is made of stainless steel. The upstream aquifer 21 and the downstream aquifer 23 are respectively provided with a water level gauge 24 which is vertically arranged, the water level gauge 24 comprises a screen pipe 241 and a pressure sensor 242, the pressure sensor 242 is arranged at the bottom of the screen pipe 241, and the screen pipe 241 is made of PVC pipe materials. The upstream aquifer 21 and the downstream aquifer 22 are used to fill the groundwater contamination area to collect samples in situ. The reaction wall 22 is filled with a water pollution repair filler, which is an adsorption material and a permeability coefficient adjusting material, wherein the adsorption material is a modified material with adsorption effect, and the modified material comprises, but is not limited to, carbon-based materials, polymers, water (gas) gels, layered Double Hydroxides (LDHs), metal/covalent-organic framework compounds (MOFs and COFs), biological materials, iron-based materials, silicon-based materials and the like, and the particle size is controlled to be about 200 meshes; the permeability coefficient adjusting material comprises bentonite, raw ore and quartz sand, the grain diameter is controlled to be 100-200 meshes, and the permeability coefficient of the permeability coefficient adjusting material is controlled to be 10 -4 cm/s or so.
The liquid supply device 1 comprises a water storage tank 11, a water inlet pump 12 and a water inlet pipe 13, wherein the water inlet pump 12 pumps sewage in the water storage tank 11 into an upstream water-bearing layer 21 of the reaction tank 2 through the water inlet pipe 13, and the water inlet pump 12 is a peristaltic pump. The sample collection and recovery device 3 comprises a water outlet pipe 31, a plurality of sampling bottles 32, a recovery water tank 33, a funnel 34, a rotary water outlet pipe 35, a water outlet branch pipe 36 and a steering engine, wherein one end of the water outlet pipe 31 is communicated with the downstream aquifer 23, and the other end of the water outlet pipe extends into a bucket cavity of the funnel 34. The bottom of the funnel 34 is respectively communicated with the rotary water outlet pipe 35 and the water outlet branch pipe 36, and the water outlet branch pipe 36 is communicated with the recovery water tank 33. The rotary water outlet pipe 34 is provided with an electromagnetic valve 37, and the rotary water outlet pipe 34 is driven by a steering engine to rotate around the funnel 34 and is communicated with the corresponding sampling bottle 32. The control unit 4 is electrically connected with the water inlet pump 12, the pressure sensor 242, the electromagnetic valve 37 and the steering engine.
During experiments, sewage in the water storage tank 11 enters the reaction tank 2 through the water inlet pipe 13 under the action of the water inlet pump 12, and sequentially passes through the upstream water-bearing layer 21, the reaction wall 22 and the downstream water-bearing layer 23, and is discharged after being repaired by the repairing filler in the reaction wall 22. Whether a sewage water sample is collected or not is selected by controlling the opening and closing of the electromagnetic valve 37, and when sampling is not needed, the electromagnetic valve 37 is closed, and the treated sewage is recovered through the recovery water tank 33; when a sewage water sample needs to be collected, the electromagnetic valve 37 is opened, and sewage enters the sampling bottle 32 through the rotary water outlet pipe 35 to realize sampling. When collecting sewage water sample, the water sample flows through solenoid valve 37 and gets into rotatory outlet pipe 35, and rotatory outlet pipe 35 can dock with sampling bottle 32 bottleneck through rotatory under the steering wheel effect, and the water sample flows through rotatory outlet pipe 35 and flows into sampling bottle 32 in, through the position of adjusting rotatory outlet pipe 35 for rotatory outlet pipe 35 dock with the bottleneck position of a plurality of different sampling bottles 32, thereby can realize continuous sampling. By providing the control unit 4, an automated control of the experimental device is achieved, such as: the pressure difference between the upstream aquifer 21 and the downstream aquifer 23 is controlled by controlling the pumping pressure of the water inlet pump 12, so that the pressure difference between the front and the back of the experimental device can be ensured to be stable, and a stable experimental environment can be created.
The groundwater pollution remediation experimental device of the embodiment controls the electromagnetic valve 37 and the steering engine by setting sampling time through the control unit 4, so that automatic sampling is realized, required samples can be reserved according to actual needs, the problem of mixed samples is avoided, and the experimental effect can be reflected to the greatest extent.
The foregoing examples are set forth in order to provide a more thorough description of the present utility model, and are not intended to limit the scope of the utility model, since modifications of the present utility model, in which equivalents thereof will occur to persons skilled in the art upon reading the present utility model, are intended to fall within the scope of the utility model as defined by the appended claims.
Claims (9)
1. An underground water pollution remediation experimental apparatus, which is characterized in that: comprises a liquid supply device (1), a reaction tank (2) and a sample collection and recovery device (3);
an upstream water-containing layer (21), a reaction wall (22) and a downstream water-containing layer (23) are sequentially arranged in the reaction tank (2) from left to right, water pollution repair filler is filled in the reaction wall (22), and soil samples in areas polluted by underground water are filled in the upstream water-containing layer (21) and the downstream water-containing layer (22); the liquid supply device (1) comprises a water storage tank (11), a water inlet pump (12) and a water inlet pipe (13), wherein the water inlet pump (12) pumps sewage in the water storage tank (11) into an upstream water-bearing layer (21) of the reaction tank (2) through the water inlet pipe (13);
the sample collection and recovery device (3) comprises a water outlet pipe (31), a sampling bottle (32) and a recovery water tank (33), one end of the water outlet pipe (31) is communicated with the downstream aquifer (23), and the other end of the water outlet pipe is communicated with the sampling bottle (32) and/or the recovery water tank (33).
2. The groundwater pollution remediation experiment device of claim 1, wherein: and filter layers are arranged between the upstream water-bearing layer (21) and the downstream water-bearing layer (23) and the reaction wall (22).
3. The groundwater pollution remediation experiment device of claim 2, wherein: the filter layer is a sieve plate and geotextile.
4. The groundwater pollution remediation experiment device of claim 1, wherein: the water inlet pump (12) is a peristaltic pump.
5. The groundwater pollution remediation experiment device of claim 1, wherein: and a water level meter (24) which is vertically arranged is arranged in each of the upstream water-bearing layer (21) and the downstream water-bearing layer (23), the water level meter (24) comprises a screen pipe (241) and a pressure sensor (242), and the pressure sensor (242) is arranged at the bottom of the screen pipe (241).
6. The groundwater pollution remediation experiment device of claim 5, wherein: the sample collection and recovery device (3) further comprises a funnel (34), a rotary water outlet pipe (35) and a water outlet branch pipe (36); the water outlet end of the water outlet pipe (31) stretches into the bucket cavity of the funnel (34), the bottom of the funnel (34) is respectively communicated with the rotary water outlet pipe (35) and the water outlet branch pipe (36), the water outlet branch pipe (36) is communicated with the recovery water tank (33), and the rotary water outlet pipe (34) is communicated with the sampling bottle (32).
7. The groundwater pollution remediation experiment device of claim 6, wherein: an electromagnetic valve (37) is arranged on the rotary water outlet pipe (34).
8. The groundwater pollution remediation experiment device of claim 7, wherein: the sample collection and recovery device (3) further comprises a plurality of sampling bottles (32) and steering gears, and the rotary water outlet pipe (34) is driven by the steering gears to rotate around the hopper (34) and is communicated with the corresponding sampling bottles (32).
9. The groundwater pollution remediation experiment device of claim 8, wherein: the control unit (4) is electrically connected with the water inlet pump (12), the pressure sensor (242), the electromagnetic valve (37) and the steering engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321465672.0U CN220056408U (en) | 2023-06-09 | 2023-06-09 | Groundwater pollution remediation experimental device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321465672.0U CN220056408U (en) | 2023-06-09 | 2023-06-09 | Groundwater pollution remediation experimental device |
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| Publication Number | Publication Date |
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| CN220056408U true CN220056408U (en) | 2023-11-21 |
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| CN202321465672.0U Active CN220056408U (en) | 2023-06-09 | 2023-06-09 | Groundwater pollution remediation experimental device |
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| CN (1) | CN220056408U (en) |
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- 2023-06-09 CN CN202321465672.0U patent/CN220056408U/en active Active
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