CN211263339U - Small test device for in-situ chemical oxidation remediation of soil - Google Patents
Small test device for in-situ chemical oxidation remediation of soil Download PDFInfo
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- CN211263339U CN211263339U CN201922220324.7U CN201922220324U CN211263339U CN 211263339 U CN211263339 U CN 211263339U CN 201922220324 U CN201922220324 U CN 201922220324U CN 211263339 U CN211263339 U CN 211263339U
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Abstract
The utility model provides a soil normal position chemical oxidation restores little examination device, include: a filling cylinder, the top of which is provided with an opening and the bottom of which is provided with a filter screen, and the interior of which is used for filling soil collected from a polluted site so as to form a soil column; the injection well pipe is respectively inserted into the soil column, and the pipe wall of the injection well pipe is provided with a plurality of injection slotted holes; an oxidant supply section for supplying an oxidant solution into each injection well pipe; and a catalyst supply section for supplying a catalyst solution into each injection well pipe. The utility model provides a soil normal position chemical oxidation restores small trial run device can simulate soil actual underground well environment to react the mode that the medicament was poured into through the simulation well form with soil, can simulate the reaction state under the field application condition well, make the restoration result more true credible.
Description
Technical Field
The utility model belongs to the technical field of pollute soil prosthetic devices, concretely relates to soil normal position chemical remediation lab scale device.
Background
The in-situ chemical oxidation remediation technology for the soil is carried out at the original position of the polluted site, and the soil does not need to be excavated or underground water is pumped out to the ground for treatment, so that the in-situ chemical oxidation remediation technology for the soil becomes a widely applied technology for treating the polluted site at home and abroad. Because different oxidants have different oxidizing capacities and different types of soil organic pollutants, which oxidant can be effectively applied to the soil of the land to be repaired needs to be subjected to a small experiment in a laboratory to verify the repairing effect.
Usually, laboratory lab scale tests only take out the contaminated soil in the plot to be repaired, and carry out simple mixing reaction with different repairing agents, and the reaction conditions are greatly different from the actual underground soil state, so that even if the oxidizing agent is verified to be capable of effectively degrading pollutants under the laboratory conditions, when the laboratory scale tests are actually applied on site, the laboratory scale tests cannot meet the soil repairing standards due to the difference between the laboratory conditions and the field environment, such as the difference between the soil permeability and the agent mixing degree.
In addition, because organic pollutants have volatility, soil particles can be dispersed to be fully contacted with air in the mixing and stirring process, so that the pollutants are dissipated through physical volatilization instead of reacting with the oxidant. The actual underground environment is a relatively closed and anaerobic environment, and the rate of contaminant loss through volatilization is low, which also leads to errors in the pilot experiments.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a solve above-mentioned technical problem and go on, aim at provides a soil normal position chemical oxidation restores lab scale device.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a soil normal position chemical oxidation restores little examination device, include: a filling cylinder, the top of which is provided with an opening and the bottom of which is provided with a filter screen, and the interior of which is used for filling soil collected from a polluted site so as to form a soil column; the injection well pipe is respectively inserted into the soil column, and the pipe wall of the injection well pipe is provided with a plurality of injection slotted holes; an oxidant supply section for supplying an oxidant solution into each injection well pipe; and a catalyst supply section for supplying a catalyst solution into each injection well pipe.
In the soil in-situ chemical oxidation remediation small test device provided by the utility model, the device can also have the characteristics that: further comprising: and the liquid collecting barrel is used for collecting the solution seeped out of the soil column, and the liquid collecting barrel is detachably arranged at the bottom of the filling barrel.
In the soil in-situ chemical oxidation remediation small test device provided by the utility model, the device can also have the characteristics that: the wall of the filling cylinder is provided with a plurality of soil sampling port groups which are arranged at intervals along the height direction of the filling cylinder, and each soil sampling port group respectively comprises a plurality of soil sampling ports which are arranged at intervals along the circumferential direction of the filling cylinder.
In the soil in-situ chemical oxidation remediation small test device provided by the utility model, the device can also have the characteristics that: further comprising: soil sampling pipe for gather soil sample from soil sample connection, wherein, soil sampling pipe have with soil sample connection assorted pipe main part and fixed setting at the handle of the one end of this pipe main part.
In the soil in-situ chemical oxidation remediation small test device provided by the utility model, the device can also have the characteristics that: wherein the plurality of injection slots are evenly spaced along the length of the injection well pipe and each injection slot extends along the circumference of the injection well pipe.
In the soil in-situ chemical oxidation remediation small test device provided by the utility model, the device can also have the characteristics that: the liquid storage container for the oxidant is used for containing oxidant solution, the liquid inlet end of the peristaltic pump for the oxidant is communicated with the liquid storage container for the oxidant, one end of the conveying pipe for the oxidant is connected with the liquid outlet end of the peristaltic pump for the oxidant, and the other end of the conveying pipe for the oxidant is communicated with the top of the at least one injection well pipe respectively.
In the soil in-situ chemical oxidation remediation small test device provided by the utility model, the device can also have the characteristics that: the catalyst supply part comprises a catalyst liquid storage container, a catalyst peristaltic pump and a catalyst conveying pipe, the catalyst liquid storage container is used for containing a catalyst solution, the liquid inlet end of the catalyst peristaltic pump is communicated with the catalyst liquid storage container, one end of the catalyst conveying pipe is connected with the liquid outlet end of the catalyst peristaltic pump, and the other end of the catalyst conveying pipe is communicated with the top of at least one injection well pipe respectively.
In the soil in-situ chemical oxidation remediation small test device provided by the utility model, the device can also have the characteristics that: further comprising: a thermometer inserted in the soil column for detecting a temperature inside the soil column in real time.
In the soil in-situ chemical oxidation remediation small test device provided by the utility model, the device can also have the characteristics that: the top of the filling cylinder is also provided with a cylinder cover for covering the opening, and the cylinder cover is provided with well pipe holes which are at least equal to the number of the injection well pipes and used for the injection well pipes to pass through.
In the soil in-situ chemical oxidation remediation small test device provided by the utility model, the device can also have the characteristics that: wherein, the outer surface of the injection well pipe is wrapped with gauze cloth.
Action and effect of the utility model
According to the soil in-situ chemical oxidation remediation small test device provided by the utility model, the filling cylinder, at least one injection well pipe, the oxidant supply part and the catalyst supply part are provided, the filling cylinder can be filled with soil collected from a polluted site to form a soil column, the injection well pipe is inserted into the soil column, the pipe wall of the injection well pipe is provided with a plurality of injection slot holes, the oxidant supply part can provide oxidant solution into each injection well pipe, the catalyst supply part can provide catalyst solution into each injection well pipe, therefore, the in-situ chemical oxidation remediation small test device for soil in the utility model can well simulate the actual underground environment of soil, the medicament reacts with the soil in a well-like injection simulating mode, so that the reaction state under the field application condition can be well simulated, and the repairing result is more real and credible.
Drawings
Fig. 1 is a schematic structural diagram of a soil in-situ chemical oxidation remediation lab scale in an embodiment of the present invention.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the drawings, so as to fully understand the purpose, the characteristics and the effects of the soil in-situ chemical oxidation remediation lab scale.
< example >
Fig. 1 is a schematic structural diagram of a soil in-situ chemical oxidation remediation lab scale in an embodiment of the present invention.
As shown in fig. 1, in the present embodiment, the soil in-situ chemical oxidation remediation device 100 is used for simulating an in-situ chemical oxidation remediation technique to perform in-situ remediation on contaminated soil. This soil normal position chemical oxidation restores urine device 100 includes: a filling tube 10, a liquid collecting tube 20, three injection well pipes 30, an oxidant supply part 40, a catalyst supply part 50, a soil sampling tube 60, and a thermometer 70.
As shown in fig. 1, the filling cylinder 10 has an opening at the top and a screen 11 at the bottom, and is filled with soil collected from a contaminated site to form a soil column, which is provided with a plurality of injection well insertion holes (not shown) for inserting an injection well pipe 30, a thermometer 70, and a pressure balancing port to balance the pressure between the inside of the soil column and the atmosphere. In this embodiment, the filling cylinder 10 is a cylinder made of organic glass, and the inner diameter of the cylinder is 30cm and the height thereof is 75 cm; the filter screen 11 is a stainless steel filter screen.
The top of the filling cylinder 10 is provided with a cylinder cover 12 for covering the opening. The casing cover 12 is provided with a plurality of well bores 121 corresponding to the plurality of injection well insertion holes, respectively. In this embodiment, the borehole aperture 121 is 20mm in diameter, as shown in FIG. 1.
The wall of the filling tube 10 is provided with four soil sampling port groups 13 uniformly spaced along the height direction of the filling tube 10, and each soil sampling port group 13 comprises two soil sampling ports 131 uniformly spaced along the circumferential direction of the filling tube 10. In this embodiment, the soil sampling port 131 has an inner diameter of 50 mm.
As shown in fig. 1, a liquid collecting cylinder 20 is detachably installed at the bottom of the filling cylinder 10 for collecting the solution oozed from the soil column and flowing out through the screen 11 for an analytical test. In this embodiment, the liquid collecting cylinder 20 is a cylinder made of organic glass material and having an inner diameter of 30cm and a height of 25cm, the top of the cylinder is open, and the bottom of the cylinder is closed; the top of the liquid collecting barrel 20 and the bottom of the filling barrel 10 are connected in a fitting mode.
As shown in fig. 1, three injection wellpipes 30 are inserted through the wellpipe bores 12 of the cartridge cover 12, respectively, and into the soil column. The pipe wall of the injection well pipe 30 is provided with a plurality of injection slots 31, the plurality of injection slots 31 are arranged at regular intervals along the length direction of the injection well pipe 30, and each injection slot 31 extends along the circumferential direction of the injection well pipe 30. In the present embodiment, the injection slot 31 has a width of 2mm along the length direction of the injection well pipe 30; the outer surface of the injection well pipe 30 is wrapped with a gauze cloth (not shown).
As shown in fig. 1, the oxidizer supply part 40 is used to supply an oxidizer solution into each of the injection well pipes 30. The oxidizing agent supply unit 40 includes a liquid storage tank 41, a peristaltic pump 42, and a delivery pipe 43.
The liquid storage container 41 is used for containing an oxidant solution, and in the present embodiment, the liquid storage container 41 is a liquid storage bottle.
The inlet end of the peristaltic pump 42 is connected to the reservoir 41 via a hose 44.
The delivery pipe 43 has a delivery manifold 431 and three delivery branches 432. One end of the conveying main pipe 431 is connected with the liquid outlet end of the peristaltic pump 42, one end of three conveying branch pipes 432 is respectively connected and communicated with the other end of the conveying main pipe 431, and the other end of the three conveying branch pipes 432 is respectively communicated with the tops of three injection well pipes 30.
As shown in fig. 1, the catalyst supply section 50 is used to supply a catalyst solution into each of the injection well pipes 30. The catalyst supply unit 50 includes a liquid storage container 51, a peristaltic pump 52, and a delivery pipe 53.
The liquid storage container 51 is used for containing an oxidant solution, and in the present embodiment, the liquid storage container 51 is a liquid storage bottle.
The inlet end of the peristaltic pump 52 is in communication with the reservoir 51 through a hose 54.
The delivery pipe 53 has a delivery main pipe 531 and three delivery branch pipes 532. One end of the conveying main pipe 531 is connected with the liquid outlet end of the peristaltic pump 52, one end of each of the three conveying branch pipes 532 is connected and communicated with the other end of the conveying main pipe 531, and the other ends of the three conveying branch pipes 532 are communicated with the tops of the three injection well pipes 30.
As shown in FIG. 1, the soil sampling tube 60 is used to conveniently collect soil samples from the soil sampling port 131 for analytical testing. The soil sampling tube 60 has a tube main body 61 fitted with a soil sampling port 131 and a handle 62 fixedly provided at one end of the tube main body.
As shown in fig. 1, a thermometer 70 is inserted into the soil column through one of the manhole holes 12 of the cylinder cover 12 for real-time detection of the temperature inside the soil column.
Effects and effects of the embodiments
According to the soil in-situ chemical oxidation remediation bench test device of the present embodiment, since the device comprises a filling cylinder capable of being filled with soil collected from a contaminated site to form a soil column, at least one injection well pipe inserted into the soil column, a plurality of injection slots provided in the wall of the injection well pipe, an oxidant supply unit capable of supplying an oxidant solution into each injection well pipe, and a catalyst supply unit capable of supplying a catalyst solution into each injection well pipe, therefore, the small test device for in-situ chemical oxidation remediation of soil in the embodiment can well simulate the actual underground environment of soil, the medicament reacts with the soil in a well-like injection simulating mode, so that the reaction state under the field application condition can be well simulated, and the repairing result is more real and credible.
In addition, because still have a collection liquid section of thick bamboo, this collection liquid section of thick bamboo is installed in the bottom of filling the section of thick bamboo, can collect the liquid that oozes in the soil column and flow out through the filter screen for analytical testing.
In addition, because be equipped with a plurality of soil sample connection on the section of thick bamboo wall of filling a section of thick bamboo, can take a sample the soil after restoreing to supply analytical test with.
The above embodiments are preferred examples of the present invention, and are not intended to limit the scope of the present invention.
For example, in the above embodiment, the number of injection well pipes is three. However, in the present invention, the number of the injection well pipes may be two or one, or may be more than three, as required.
Claims (10)
1. The in-situ chemical oxidation remediation lab scale of soil is characterized by comprising:
a filling cylinder, the top of which is provided with an opening and the bottom of which is provided with a filter screen, and the interior of which is used for filling soil collected from a polluted site so as to form a soil column;
the injection well pipes are respectively inserted into the soil columns, and the pipe walls of the injection well pipes are provided with a plurality of injection slotted holes;
an oxidant supply section for supplying an oxidant solution into each of the injection well pipes; and
and a catalyst supply unit for supplying a catalyst solution into each of the injection wells.
2. The soil in-situ chemical oxidation remediation chamber of claim 1, further comprising:
a liquid collecting cylinder for collecting the solution oozed out from the soil column,
wherein the liquid collecting barrel is detachably mounted at the bottom of the filling barrel.
3. The soil in-situ chemical oxidation remediation lab scale of claim 1, wherein:
wherein, the wall of the filling cylinder is provided with a plurality of soil sampling port groups which are arranged at intervals along the height direction of the filling cylinder,
each soil sampling port group comprises a plurality of soil sampling ports which are arranged along the circumferential direction of the filling cylinder at intervals.
4. The soil in-situ chemical oxidation remediation chamber of claim 3, further comprising:
a soil sampling tube for collecting a soil sample from the soil sampling port,
wherein, soil sampling pipe have with soil sample connection assorted pipe main part and fixed setting are at the handle of the one end of this pipe main part.
5. The soil in-situ chemical oxidation remediation lab scale of claim 1, wherein:
wherein the plurality of injection slots are arranged at regular intervals along the length direction of the injection well pipe, and each injection slot extends along the circumferential direction of the injection well pipe.
6. The soil in-situ chemical oxidation remediation lab scale of claim 1, wherein:
wherein the oxidizing agent supply unit includes a storage container for an oxidizing agent, a peristaltic pump for an oxidizing agent, and a delivery pipe for an oxidizing agent,
the oxidant reservoir container is used for containing the oxidant solution,
the liquid inlet end of the peristaltic pump for the oxidant is communicated with the liquid storage container for the oxidant,
one end of the conveying pipe for the oxidant is connected with the liquid outlet end of the peristaltic pump for the oxidant, and the other end of the conveying pipe for the oxidant is respectively communicated with the top of the at least one injection well pipe.
7. The soil in-situ chemical oxidation remediation lab scale of claim 1, wherein:
wherein the catalyst supply unit includes a catalyst storage container, a peristaltic pump for catalyst, and a catalyst transport pipe,
the storage container for the catalyst is used for containing the catalyst solution,
the liquid inlet end of the peristaltic pump for the catalyst is communicated with the liquid storage container for the catalyst,
one end of the conveying pipe for the catalyst is connected with the liquid outlet end of the peristaltic pump for the catalyst, and the other end of the conveying pipe for the catalyst is respectively communicated with the top of the at least one injection well pipe.
8. The soil in-situ chemical oxidation remediation chamber of claim 1, further comprising:
a thermometer inserted in the soil column for detecting a temperature inside the soil column in real time.
9. The soil in-situ chemical oxidation remediation lab scale of claim 1, wherein:
wherein the top of the filling cylinder is also provided with a cylinder cover for covering the opening,
and well pipe holes which are at least equal to the injection well pipes in number and used for the injection well pipes to pass through are formed in the cylinder cover.
10. The soil in-situ chemical oxidation remediation lab scale of claim 1, wherein:
wherein, the outer surface of the injection well pipe is wrapped with gauze cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922220324.7U CN211263339U (en) | 2019-12-09 | 2019-12-09 | Small test device for in-situ chemical oxidation remediation of soil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922220324.7U CN211263339U (en) | 2019-12-09 | 2019-12-09 | Small test device for in-situ chemical oxidation remediation of soil |
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| CN211263339U true CN211263339U (en) | 2020-08-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112404115A (en) * | 2020-09-30 | 2021-02-26 | 南京格洛特环境工程股份有限公司 | Chemical oxidation soil remediation process and simulation test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112404115A (en) * | 2020-09-30 | 2021-02-26 | 南京格洛特环境工程股份有限公司 | Chemical oxidation soil remediation process and simulation test device |
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