CN114769301B - Repair system for in-situ hydraulic drive reinforced oxidation-reduction reaction - Google Patents
Repair system for in-situ hydraulic drive reinforced oxidation-reduction reaction Download PDFInfo
- Publication number
- CN114769301B CN114769301B CN202210433398.2A CN202210433398A CN114769301B CN 114769301 B CN114769301 B CN 114769301B CN 202210433398 A CN202210433398 A CN 202210433398A CN 114769301 B CN114769301 B CN 114769301B
- Authority
- CN
- China
- Prior art keywords
- soil
- oxidation
- well
- injection well
- injection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/002—Reclamation of contaminated soil involving in-situ ground water treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a repair system for in-situ hydraulic drive reinforced oxidation-reduction reaction, which is used for repairing polluted soil and groundwater, and comprises a hydraulic drive circulating system and a reaction grid system; the hydraulic driving circulation system comprises a driving assembly and a liquid storage tank; the reaction grid system is connected with the liquid storage tank through the driving component; the reaction grid system is arranged underground until the soil is saturated; the reaction grid system comprises a soil reduction purification unit and a soil oxidation purification unit which are mutually connected in series. The device can realize efficient soil and groundwater integrated restoration aiming at a site polluted by water-soluble dye, and achieves satisfactory pollutant removal effect in a short time through hydraulic driving. The repair system does not influence normal production and life on the ground during operation, and realizes high utilization of resources.
Description
Technical Field
The invention relates to the technical field of soil remediation, in particular to a remediation system for strengthening oxidation-reduction reaction by in-situ hydraulic drive.
Background
Research shows that the promotion of new towns in China is accelerated, the transformation of land utilization has serious influence on soil water environment, a large number of industrial waste sites occur, the occurrence of pollution sites happens, and the living environment and healthy life of surrounding residents are threatened. The pollutants of the industrial pollution site mainly comprise heavy metals, petroleum hydrocarbon, volatile organic pollutants, semi-volatile organic pollutants and the like, and cause serious pollution to soil and groundwater of the industrial site and surrounding areas. The groundwater in the polluted site contains a plurality of water-soluble organic pollutants which are difficult to degrade, such as naphthalene sulfonate and azide dye, and has strong carcinogenic, teratogenic and mutagenic effects, so that the site repair is not slow.
At present, the polluted soil and groundwater in China are basically treated separately. The integrated restoration of the soil and the underground water is relatively difficult, and the molding technology is less. And the field pollution is repaired by ectopic repair and in-situ repair according to different repair treatment engineering positions. Ectopic repair is a technology of carrying out ground treatment after digging out soil, and secondary pollution is easily caused due to complex construction of ectopic repair. The technology of groundwater extraction treatment, multiple extractions and the like has short construction period but complex engineering, and volatile pollutants are easy to surprise and escape into the air to cause secondary pollution.
In contrast, in situ remediation techniques for in situ treatment of site contaminants can avoid this problem. The in-situ remediation technology can be used for simultaneously remediating the soil and the underground water polluted by deep layers, and comprises an in-situ thermal desorption technology, an in-situ extraction technology, an in-situ chemical oxidation-reduction technology, an in-situ photocatalysis technology and an in-situ biological remediation technology. In-situ chemical oxidation-reduction technology is widely applied, and is mainly used for drug delivery and injection by means of permeable reaction grids, injection extraction wells and the like, but has the problem of insufficient driving force.
Therefore, there is a need to design a repair system that enhances the redox reaction in situ by hydraulic driving.
Disclosure of Invention
The invention aims to provide an in-situ hydraulic drive reinforced oxidation-reduction reaction repairing system, which solves the problems of the prior art, and can solve the problems of large engineering quantity, poor water-soil integrated repairing effect and the like of the prior treatment process.
In order to achieve the above object, the present invention provides the following solutions: the invention provides a repair system for strengthening oxidation-reduction reaction by in-situ hydraulic drive, which is used for repairing polluted soil and groundwater, and comprises the following components:
the hydraulic driving circulation system comprises a driving assembly and a liquid storage tank; the reaction grid system is connected with the liquid storage tank through a driving component;
the reaction grid system is arranged underground until the soil is saturated; the reaction grid system comprises a soil reduction purification unit and a soil oxidation purification unit which are mutually connected in series.
Further, a first injection port, a second injection port and a third injection port are formed in the surface of the reaction grid system; the first injection port, the second injection port and the third injection port extend towards the ground to form a first injection well, a second injection well and a pumping well respectively; the first injection well and the extraction well are respectively communicated with the liquid storage tank through a driving assembly.
Further, the first injection well, the second injection well and the extraction well are provided with at least two and are parallel to each other; the second injection well is arranged between the first injection well and the extraction well; the soil reduction purification unit and the soil oxidation purification unit are respectively arranged between the first injection well and the second injection well and between the second injection well and the extraction well;
furthermore, the peripheral walls of the first injection well, the second injection well and the extraction well are provided with water holes which are uniformly distributed.
Further, the second injection well is communicated with the oxidation tank through a driving assembly; the oxidant in the oxidation tank contains persulfate solution.
Further, the persulfate solution is sodium persulfate, potassium persulfate or potassium persulfate, and the concentration of the oxidant is 5-10%.
Further, the soil reduction purification unit comprises a plurality of reduction columns; the soil oxidation purification unit comprises a plurality of oxidation columns; the reduction columns and the oxidation columns are arranged in parallel;
further, gauze is wrapped outside the reduction column and the oxidation column, and soil purifying medium fillers are filled in the reduction column and the oxidation column.
Further, the soil purifying medium filler is nano zero-valent iron loaded by biochar.
In one embodiment of the invention, a clean-up transition chamber is formed between the reduction column and the oxidation column.
Further, the driving component is a peristaltic pump.
The invention discloses the following technical effects: the device can realize efficient soil and groundwater integrated restoration aiming at a site polluted by water-soluble dye, and achieves satisfactory pollutant removal effect in a short time through hydraulic driving. The repair system does not influence normal production and life on the ground during operation, and realizes high utilization of resources. Has practical theoretical significance and application value for restoring underground soil of large industrial park.
The technology has the advantages of low economic cost, good treatment effect, cyclic treatment, water resource conservation, simple operation and convenient management, and the restored underground soil can reach the environmental standard. The device not only can effectively treat the pollution of the underground soil of a large industrial park, but also can realize the recycling of water resources, can not influence the normal production life on the ground, and has wide application prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure;
FIG. 2 is a schematic perspective view;
1, a box cover; 2. a seepage box; 3. a first injection well; 4. a soil reduction and purification unit; 5. a second injection well; 6. a soil oxidation and purification unit; 7. withdrawing the well; 8. a peristaltic pump; 9. a liquid storage tank; 10. purifying the transition cavity; 11. a bolt; 12. a sampling hole; 13. an oxidation tank.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
The invention provides a repair system for strengthening oxidation-reduction reaction by in-situ hydraulic drive, which is used for repairing polluted soil and groundwater and comprises the following components:
the hydraulic driving circulation system comprises a driving assembly and a liquid storage tank 9; the reaction grid system is connected with the liquid storage tank 9 through a driving component;
the reaction grid system is arranged underground until the soil is saturated; the reaction grid system comprises a soil reduction and purification unit 4 and a soil oxidation and purification unit 6 connected in series with each other.
The surface of the reaction grid system is provided with a first injection port, a second injection port and a third injection port; the first injection port, the second injection port and the third injection port extend towards the ground to form a first injection well 3, a second injection well 5 and a extraction well 7 respectively; the first injection well 3 and the extraction well 7 are each in communication with a reservoir 9 via a drive assembly.
The first injection well 3, the second injection well 5 and the extraction well 7 are provided with at least two and parallel to each other; the second injection well 5 is arranged between the first injection well 3 and the extraction well 7; the soil reduction purification unit 4 and the soil oxidation purification unit 6 are respectively arranged between the first injection well 3 and the second injection well 5 and between the second injection well 5 and the extraction well 7;
the peripheral walls of the first injection well 3, the second injection well 5 and the extraction well 7 are provided with water holes which are uniformly distributed.
The second injection well 5 is communicated with the oxidation tank 13 through a driving assembly; the oxidizing agent in the oxidation tank 13 contains a persulfate solution.
The persulfate solution is sodium persulfate, potassium persulfate or potassium persulfate, and the concentration of the oxidant is 5-10%.
The soil reduction purification unit 4 comprises a plurality of reduction columns; the soil oxidation and purification unit 6 comprises a plurality of oxidation columns; the reduction columns and the oxidation columns are respectively provided with a plurality of reduction columns, and the reduction columns arranged in a row and the oxidation columns arranged in a row are respectively arranged in parallel;
the reducing column and the oxidation column are wrapped with gauze, and the soil purifying medium filler is filled in the reducing column and the oxidation column.
The soil purifying medium filler is nano zero-valent iron loaded by biochar.
The drive assembly is a peristaltic pump 8.
Example 1
As shown in fig. 1, for easy understanding, the experimental area of the series-type reaction grid system is regarded as a seepage box 2 with a square area, the top of the seepage box 2 is provided with a transparent box cover 1, and the seepage box is screwed by bolts 11, so that the interior of the seepage box 2 is prevented from being polluted by the environment; the upper surface of the case cover 1 is provided with a first injection port, a second injection port and a third injection port, and the positions of the first injection well 3, the second injection well 5 and the extraction well 7 are corresponding.
Further, the invention comprises a seepage box 2 filled with polluted soil, a hydraulic driving circulation system for promoting the migration of pollutants in the soil, and a serial reaction grid system consisting of permeable reaction columns. The hydraulically driven circulation system comprises a first injection well 3, a withdrawal well 7, a peristaltic pump 8 and a reservoir 9. The reaction grid system comprises a soil reduction purification unit 4 and a soil oxidation purification unit 6 which are connected in series, and reaction columns are uniformly distributed on the longitudinal section of the seepage box 2;
the first injection well 3 and the extraction well 7 in the seepage box 2 are connected with a liquid storage box 9 through pipelines, and purified water is filled in the liquid storage box 9; peristaltic pumps 8 are arranged at the water inlet end and the water outlet end of the seepage box 2, a plurality of mutually spaced soil purifying units are arranged in the seepage box 2, a purifying transition cavity 10 is formed among adjacent soil purifying units, the boundaries of the soil purifying units and the soil cubes, and a sampling hole 12 communicated with the purifying transition cavity is arranged on the side surface of the seepage box 2;
the outside of the soil reduction purification unit 4 and the outside of the soil oxidation purification unit 6 are wrapped with 200 meshes of nylon Long Wangsha, the inside of the column is filled with a soil purification medium filler, and the soil purification medium filler is nano zero-valent iron loaded by biochar;
the oxidizing purification unit is provided with a special persulfate second injection well 5 and forms the oxidizing purification unit with the oxidation column; injecting chemical oxidant containing persulfate solution for 2 hours, mixing the chemical oxidant with soil and groundwater, uniformly penetrating into the soil and groundwater, and entering an oxidation column under hydraulic drive after the chemical oxidant is fully contacted with organic pollutants, so that the chemical oxidant is activated to remove the organic pollutants in the soil and groundwater;
in this example, the number of soil purifying elements is two, and the two soil purifying elements are the reducing soil purifying element 4 and the oxidizing soil purifying element 6, respectively. The permeability reaction column of the soil purifying unit is made of organic glass, the diameter is 200mm, micropores with the diameter of 1mm are uniformly distributed on the pipe wall, the outside is wrapped with 200 meshes of Long Wangsha, and the inside of the column is filled with soil purifying medium filler;
the purifying medium filler filled in the soil purifying unit is nano zero-valent iron loaded by biochar; the nano zero-valent iron loaded by the biochar in the soil reduction purification unit 4 is used for removing organic pollutants in the soil and has adsorption efficiency; the nano zero-valent iron loaded by the biochar in the soil oxidation purification unit 6 is used as a catalyst for persulfate (second injection well 5) activation and is used for deep removal after the repair of the previous soil purification unit.
Next, in this example, in order to ensure uniformity of water flow, a hydraulic drive system is provided. The hydraulic drive system connects the reservoir 9 with the first injection well 3 via a dual channel peristaltic pump 8 which directs fresh water from the reservoir 9 into the first injection well 3 at a flow rate of 0.1 mL/min. At the same time, persulfate was introduced from the chemical oxidizer reservoir 13 to the second injection well 5 at a flow rate of 0.1mL/min by a peristaltic pump. The solution treated by the soil purifying unit is used for guiding the liquid of the extraction well 7 into the liquid storage tank 9 at the flow rate of 0.2mL/min, and a circulating system formed by the hydraulic driving system and the liquid storage tank 9 can efficiently remove pollutants in soil, and meanwhile, the economic cost is reduced;
further, water holes with the diameter of 1mm are uniformly distributed on the pipe walls of the first injection well 3, the second injection well 5 and the extraction well 7, the forward hydraulic gradient is increased through the extraction injection system, and a stable water flow field is formed inside the seepage box, so that injected solution and water inside the seepage box groove are accelerated to flow to the extraction well 7, and hydraulic driving is formed.
As shown in fig. 2, the purification process of the contaminated site soil is simulated; the clean water uniformly enters the polluted soil in the seepage box 2 from the first injection well 3, so that the pollutants in the soil which are easy to dissolve in water are dissolved in the water. As the water flows through the soil reduction and purification unit 4, a part of the pollutants are adsorbed and a part of the pollutants are reduced and removed; as the water flows through the persulfate injection well, the remaining contaminants are mixed with the persulfate solution and subsequently passed through the soil oxidation purification unit 6, where the remaining contaminants are oxidatively removed.
In addition, in this example, the number of the purifying transition cavities 10 of the seepage box 2 is two, each purifying transition cavity 10 corresponds to a row of sampling holes, and is respectively A, B, and the number of the sampling holes in each row is three, and the heights of the three sampling holes from the bottom of the seepage box 2 are respectively 2cm, 6cm and 10cm. During the operation of the system, two rows of A, B sampling ports (6 in total) arranged at equal intervals behind each soil purifying unit were periodically sampled for evaluating the pollutant removal capacity of the soil purifying units.
Example two
Soil contaminated with naphthalene sulfonic acid, 1, 5-naphthalene disulfonic acid and 1,3, 6-naphthalene trisulfonic acid and simulated groundwater are remediated under laboratory conditions. The length, width and height are 300:150:150 (mm) the organic glass container consists of 1:1 are filled with clay and quartz sand, and simulate soil layers and groundwater which are below the ground surface and are dissolved with benzenesulfonic acid pollutants. The soil reduction purification unit 4 and the soil oxidation purification unit 6 are perforated organic glass tubes which are pre-buried in a soil layer and filled with nano zero-valent iron loaded by biochar, and the first injection well 3 and the extraction well 7 are connected with a peristaltic pump 8 and a liquid storage tank 9 through pipelines, and the persulfate injection well 5 is connected with an oxidation tank and the peristaltic pump 8. The seepage box cover 1 seals the experimental container through bolts, and a sampling port for simulating groundwater is reserved on the side surface of the experimental container.
The specific repairing steps are as follows:
(1) Starting a peristaltic pump 8 to guide oxidant solution containing persulfate into the injection well 5 from a chemical oxidant storage tank 13 so that the oxidant uniformly permeates into the soil;
(2) Simultaneously, the first injection well 3 is opened, clean water uniformly enters contaminated soil in an experimental container from the first injection well 3, so that soil pollutants dissolved in the water sequentially pass through the soil reduction purification unit 4 and the soil oxidation purification unit 6, simulated underground water flows into the liquid storage tank 9 through the extraction well 7, and the water flows back to the injection reactor for circulation;
(3) Soil, simulated groundwater and effluent from the vessel are drawn from the sampling port 12 during remediation as environmental samples for analysis of residual concentrations of benzenesulfonic acid contaminants. Experiments show that the residual concentration of the pollutants in the soil in the seepage box 2 and the simulated groundwater effluent flowing through the seepage box 2 after 24 hours is greatly reduced, the pollutant removal rate in the soil reaches 81.4%, and the pollutant removal rate in the simulated groundwater effluent flowing through the seepage box 2 reaches 92.5%. The soil restoration device and the restoration method provided by the embodiment of the invention have good effect of simultaneously removing organic pollutants in soil and underground water; the repairing technology of the embodiment of the invention is simple and easy to operate.
In one embodiment of the invention, the reaction grid system is connected on one side to the first injection well 3 and on the other side to the extraction well 7, forming a stable water flow field inside the remediation system to create a hydraulic drive.
In one embodiment of the invention, the soil purification medium fillers in the reduction column and the oxidation column are nano zero-valent iron loaded by biochar, the nano zero-valent iron loaded by biochar is obtained by jointly reducing straw biochar generated by annealing at 800 ℃ and ferrous sulfate in a nitrogen atmosphere, and the mass ratio of the iron to the biochar is 1:5-1:10.
Further, the nano zero-valent iron loaded by the biochar in the reduction column is used for reducing and removing water-soluble dye pollutants in soil; the nano zero-valent iron loaded by the biochar in the oxidation column is used as an activator of persulfate to generate free radicals, and water-soluble dye pollutants in soil or groundwater are removed through oxidation.
Furthermore, the reaction grid system has higher medicament throwing efficiency by utilizing the form of the reaction column and is simple to operate. The reaction column is a soil purifying unit, a chemical reagent is put into the reaction column, hydraulic circulation is carried out by pumping out the injection well by hydraulic drive, and pollutants are subjected to chemical reaction through the reaction column to remove the pollutants. The reaction column has small construction amount, low economic cost, long-time cyclic utilization, basically no influence on the operation of ground surface structures, and can be used in production sites.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (3)
1. An in situ hydraulically driven enhanced redox remediation system for remediating contaminated soil and groundwater, comprising:
a hydraulic drive circulation system and a reaction grid system, wherein the hydraulic drive circulation system comprises a drive assembly and a liquid storage tank (9); the reaction grid system is connected with the liquid storage tank (9) through a driving component;
the reaction grid system is arranged underground until the soil is saturated; the reaction grid system comprises a soil reduction purification unit (4) and a soil oxidation purification unit (6) which are mutually connected in series; the surface of the reaction grid system is provided with a first injection port, a second injection port and a third injection port; the first injection port, the second injection port and the third injection port extend towards the ground to form a first injection well (3), a second injection well (5) and a withdrawal well (7) respectively; the first injection well (3) and the extraction well (7) are respectively communicated with the liquid storage tank (9) through a driving assembly; the soil reduction purification unit (4) comprises a plurality of reduction columns; the soil oxidation purification unit (6) comprises a plurality of oxidation columns; the reduction columns and the oxidation columns are arranged in parallel;
the reducing column and the oxidation column are wrapped with gauze, and soil purifying medium filler is filled in the reducing column and the oxidation column; the soil purifying medium filler is biochar-loaded nano zero-valent iron; the first injection well (3), the second injection well (5) and the extraction well (7) are provided with at least two injection wells which are parallel to each other; the second injection well (5) is arranged between the first injection well (3) and the extraction well (7); the soil reduction purification unit (4) and the soil oxidation purification unit (6) are respectively arranged between the first injection well (3) and the second injection well (5) and between the second injection well (5) and the extraction well (7);
the peripheral walls of the first injection well (3), the second injection well (5) and the extraction well (7) are provided with water holes which are uniformly distributed; the second injection well (5) is communicated with the oxidation tank (13) through a driving assembly; the oxidant in the oxidation tank (13) contains persulfate solution.
2. The in situ hydraulically driven enhanced redox remediation system of claim 1, wherein: the persulfate solution is sodium persulfate, potassium persulfate or potassium hydrogen persulfate, and the concentration of the oxidant is 5-10%.
3. The in situ hydraulically driven enhanced redox remediation system of claim 1, wherein: the driving component is a peristaltic pump (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210433398.2A CN114769301B (en) | 2022-04-24 | 2022-04-24 | Repair system for in-situ hydraulic drive reinforced oxidation-reduction reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210433398.2A CN114769301B (en) | 2022-04-24 | 2022-04-24 | Repair system for in-situ hydraulic drive reinforced oxidation-reduction reaction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114769301A CN114769301A (en) | 2022-07-22 |
| CN114769301B true CN114769301B (en) | 2023-06-02 |
Family
ID=82432581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210433398.2A Active CN114769301B (en) | 2022-04-24 | 2022-04-24 | Repair system for in-situ hydraulic drive reinforced oxidation-reduction reaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114769301B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115401062A (en) * | 2022-09-05 | 2022-11-29 | 华东理工大学 | Be used for prosthetic electronic caisson reaction unit of groundwater and soil |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105032916B (en) * | 2015-06-08 | 2018-02-16 | 中节能大地（杭州）环境修复有限公司 | The in-situ injection extracting moisturizing circulation disposal system and combined remediation method of a kind of organic material contaminated soil and underground water |
| CN205518972U (en) * | 2016-01-28 | 2016-08-31 | 浙江博世华环保科技有限公司 | Organic contaminated site's of LNAPLs normal position repair system |
| CN105964670A (en) * | 2016-07-05 | 2016-09-28 | 湖南艾布鲁环保科技有限公司 | Device and method for recycling ex-site chemical elution-remediating eluate for heavy metal contaminated soil |
| CN106914482A (en) * | 2017-03-09 | 2017-07-04 | 上海广联环境岩土工程股份有限公司 | The in-situ remediation system of contaminated soil and underground water |
| CN107350278B (en) * | 2017-07-18 | 2020-06-26 | 中国地质大学（武汉） | In-situ remediation system and method for cooperatively removing organic pollutants in soil and underground water |
| CN207238749U (en) * | 2017-08-03 | 2018-04-17 | 苏州中晟环境修复股份有限公司 | One kind injection extraction well formula soil in-situ elution repair system |
| CN108655160B (en) * | 2018-05-21 | 2021-02-26 | 永清环保股份有限公司 | Three-dimensional circulating disturbance strengthening device and method for in-situ remediation of underground water |
| CN111847715A (en) * | 2020-07-21 | 2020-10-30 | 东华理工大学 | High-efficient unpowered groundwater pollution prosthetic devices of normal position |
| CN112387771A (en) * | 2020-10-14 | 2021-02-23 | 南京格洛特环境工程股份有限公司 | In-situ chemical oxidation remediation method for benzene series contaminated soil |
| CN113182335A (en) * | 2021-04-26 | 2021-07-30 | 上海大学 | Extraction driving in-situ oxidation repair system |
-
2022
- 2022-04-24 CN CN202210433398.2A patent/CN114769301B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114769301A (en) | 2022-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1095702C (en) | In-situ remediation of contaminated heterogeneous soils | |
| CN103630659B (en) | Simulation test device and simulation test method for in-situ chemical and biological remediation of underground water | |
| CN112642854B (en) | Method for repairing heavy metal organic compound polluted soil by combining electric, aeration and liquid injection | |
| CN113860662A (en) | Underground water circulating well structure, repairing system and method | |
| CN104724818B (en) | A kind of carbon tetrachloride piece-rate system and separating technology thereof | |
| CN111136094B (en) | Method for restoring polluted soil and underground water | |
| CN205762951U (en) | Soil and subsoil water inject high-pressure rotary-spray injection in-situ remediation system in situ | |
| CN105855285B (en) | A kind of device and method that rotation migration joint PRB repairs trichloro ethylene contaminated soil | |
| CN114988556B (en) | Method and device for enhancing migration of repairing agent in low-permeability area based on circulating well | |
| CN109205803B (en) | Combined purification system for coal mine underground reservoir combined polluted mine water | |
| CN102774965A (en) | In-situ repair system for treating pollution of underground water | |
| CN114769301B (en) | Repair system for in-situ hydraulic drive reinforced oxidation-reduction reaction | |
| JP2004283709A (en) | Soil pollution countermeasure method and soil pollution countermeasure system | |
| CN102825063A (en) | Regeneration method and circulating restoration device for organic contaminated soil restoration eluate | |
| CN1245452A (en) | In situ remediation of contaminated soils | |
| KR100988393B1 (en) | Apparatus and method for In-situ Bioremediation of contaminated ground water | |
| CN110127945B (en) | Method and system for synchronously restoring soil and underground water in organic pollution site in situ | |
| CN112028222A (en) | Underground water repairing system and method thereof | |
| CN113976603A (en) | In-situ soil remediation process for treating underground water based on multilayer reaction wall technology | |
| CN114062637A (en) | Multifunctional simulation device for groundwater pollution diffusion and in-situ remediation and application | |
| CN106830579B (en) | For volatile organic contaminant repair system and method in underground water | |
| CN112404115A (en) | Chemical oxidation soil remediation process and simulation test device | |
| CN216595086U (en) | Multifunctional underground water pollution diffusion and in-situ remediation simulation device | |
| CN218435217U (en) | Circulating well repairing system for treating organic matters in polluted underground water | |
| CN216737992U (en) | Groundwater remediation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |