CN106006771A - Multipath communicated well group pumping-recharging circulating water treatment method for polluted water-soil restoration - Google Patents
Multipath communicated well group pumping-recharging circulating water treatment method for polluted water-soil restoration Download PDFInfo
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- CN106006771A CN106006771A CN201610378346.4A CN201610378346A CN106006771A CN 106006771 A CN106006771 A CN 106006771A CN 201610378346 A CN201610378346 A CN 201610378346A CN 106006771 A CN106006771 A CN 106006771A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 239000002689 soil Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000002347 injection Methods 0.000 claims abstract description 32
- 239000007924 injection Substances 0.000 claims abstract description 32
- 238000005086 pumping Methods 0.000 claims abstract description 4
- 238000005070 sampling Methods 0.000 claims description 27
- 230000008439 repair process Effects 0.000 claims description 22
- 238000011049 filling Methods 0.000 claims description 17
- 230000004888 barrier function Effects 0.000 claims description 7
- 239000003814 drug Substances 0.000 abstract description 10
- 229940079593 drug Drugs 0.000 abstract 2
- 238000003672 processing method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005067 remediation Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Soil Sciences (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a multipath communicated well group pumping-recharging circulating water treatment method for polluted water-soil restoration. The treatment method includes the steps of: within the scope of a polluted site to be restored, laying recharging unit rows and drainage unit rows alternately in a staggered manner in order, wherein each recharging unit row is composed of a horizontal recharging branch pipe and several drug injection well pipes connected to the recharging branch pipe, and each drainage unit row is composed of a horizontal water catchment branch pipe and several well point pipes connected to the water catchment branch pipe; then communicating the recharging unit rows with a recharging device, and communicating the drainage unit rows with a water collection device; starting the recharging device and the water collection device respectively to conduct drug injection recharging and water pumping and drainage on the to-be-restored polluted site. The treatment method provided by the invention has high restoration efficiency, and realizes refine operation management on different treatment unit rows or single well point pipe according to different effluent water qualities.
Description
Technical field
The invention belongs to pollute water and soil recovery technique field, be specifically related to a kind of multichannel connection gang of wells for polluting water and soil in-situ immobilization and take out filling circulating water treatment method.
Background technology
Arrival along with China's Period, most cities proceed by land transformation, original industrial undertaking moves out, leave the palm fibre ground polluted in various degree in a large number, adversely affect to the secondary development in soil, bringing huge health and Ecological Environment Risk, the safety of the infrastructure such as corresponding building also can cause certain impact simultaneously, the prevention and control carrying out soil and subsoil water for this seem more and more important with improvement.
It is broadly divided into four big classes: Physical, chemical method, bioanalysis and combination method currently for the repairing and treating method of soil and groundwater, concrete recovery technique kind is more, including solidification and stabilization, gas phase extracting, elution technique, thermal desorption and plant or microorganism remediation etc..It is divided into in-situ immobilization and showering according to disposal options, but it is mostly soil or underground moisture drive into row improvement, and the application that traditional subsoil water pump-and-treat technology is in the integration polluting water and soil is repaired increasingly receives publicity, and evolve as unidirectional extraction, unidirectional injection, and extract all technology combined with medicament injection out；But this technology still suffers from extraction causes surface subsidence, soil consolidation, medicament to inject the problems such as not in place, treatment effeciency is low, expend the most manually, effect is difficult to ensure that.
Summary of the invention
In place of it is an object of the invention to according to above-mentioned the deficiencies in the prior art, a kind of multichannel connection gang of wells for polluting water and soil reparation is provided to take out filling circulating water treatment method, this processing method by recharge unit row and drainage cell row successively alternately dislocation lay thus carry out recharging and draining, prevent from unidirectional drawing back and recharging the destruction causing the Soil structure such as soil solidifying not in time.
The object of the invention realizes being completed by techniques below scheme:
A kind of multichannel connection gang of wells for polluting water and soil reparation takes out filling circulating water treatment method, it is characterized in that the treating method comprises following steps: in the range of contaminated site to be repaired, unit row will be recharged and arrange, with drainage cell, the laying that the most alternately misplaces, wherein, described recharge unit row and recharged arm and some and described recharge the injection well casing that arm is connected and form by a level to arrange, the well-point pipe that described drainage cell row is connected to the charge for remittance arm arranged and some and described charge for remittance arm by a level forms, described alternately dislocation laying refers to well-point pipe described in injection well casing described in each row and each row very, alternately lay in even rows；It is connected recharging unit row described in each with backflow device afterwards, and each described drainage cell row is connected with captation；It is respectively started described backflow device and described captation contaminated site to be repaired is carried out injection to recharge and water-pumping/draining.
Water proof barrier is arranged in contaminated site scope outer rim to be repaired.
Described injection well casing upper end and described well-point pipe upper end are provided with water sampling valve.
Recharge described in each and be connected with described backflow device through recharging main after arm crosses, described in recharge main in be provided with main stop valve.
The described input recharging arm is provided with and recharges valve, and the outfan of described charge for remittance arm is provided with water sampling valve.
Actual repair situation according to contaminated site scope, close and reach to repair the valve that recharges requiring to recharge described in position in unit row and stop recharging and water sampling valve in described drainage cell row stops draining, and open remaining and not up to repair the valve that recharges requiring to recharge described in position in unit row and carry out recharging and water sampling valve in described drainage cell row carries out draining.
Actual repair situation according to contaminated site scope, open not up to repair and require that the described water sampling valve in the described injection well casing of position and described well-point pipe carries out recharging and draining, and close remaining and reach to repair the described water sampling valve required in the described injection well casing of position and described well-point pipe.
It is an advantage of the invention that, this processing method carries out multistage being connected based on many circuits, constitute one and take out fill system by the water and soil circulation of efficiently polluting of Valve controlling, compensate for traditional treatment method shortcoming, destruction prevented also from Soil structure such as the unidirectional soil solidifyings drawn back and recharge and cause not in time, it is ensured that the seriality for the treatment of effeciency；Save the workload of artificial injection, can work the most continuously, and achieve the refinement management carrying out different processing units row or single well-point pipe according to effluent quality difference.
Accompanying drawing explanation
Fig. 1 is that in the present invention, multichannel connection gang of wells takes out filling circular water treating system plane connection layout drawing；
Fig. 2 is that in the present invention, multichannel connection gang of wells takes out the generalized section filling circular water treating system；
Fig. 3 is that in the present invention, multichannel connection gang of wells takes out the enlarged local section schematic diagram filling circular water treating system.
Detailed description of the invention
Inventive feature and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, in order to the understanding of technical staff of the same trade:
Such as Fig. 1-3, in figure, labelling 1-is respectively as follows: backflow device 1, main stop valve 2, effusion meter 3, Pressure gauge 4, recharges valve 5, injection well casing 6, vacuum pump 7, water sampling valve 8, recharges main 9, recharges arm 10, water proof barrier 11, charge for remittance main 12, captation 13, well-point pipe 14, charge for remittance arm 15.
Embodiment: as shown in Figure 1, 2, 3, the present embodiment is specifically related to a kind of multichannel connection gang of wells for polluting water and soil reparation and takes out filling circulating water treatment method, and this processing method comprises the steps:
(1) contaminated site is carried out preliminary survey, and mark off emphasis Polluted area according to survey data, as it is shown in figure 1, arrange a circle water proof barrier 11 to carry out repair process in the periphery of emphasis Polluted area it individually to be isolated, water proof barrier 11 gos deep into the water barrier degree of depth to the soil body；
(2) as shown in Figure 1, 2, in the region that water proof barrier 11 is drawn a circle to approve, unit row will be recharged and discharge into row with drainage cell and alternately misplace layings, i.e. lay at odd row and recharge unit row, lay drainage cell in even rows and arrange, to cover all of contaminated site；
Wherein, recharge unit row to be made up of an injection well casing 6 recharging arm 10 and the laying of some intervals, recharge arm 10 horizontally disposed on ground, the upper end of each injection well casing 6 is recharged arm 10 by water sampling valve 8 with this and is connected, by operating the closure or openness of water sampling valve 8 such that it is able to accurately control the break-make of each injection well casing 6, the original state of water sampling valve 8 is for opening；Injection well casing 6 is deeply repaired below degree of depth position to design as shown in Figure 2,3 and is among water-bearing layer, thus ensures in the case of persistent loop, repairs all above region of the degree of depth and all can contact with medicament；The input recharging arm 10 is disposed with effusion meter 3, Pressure gauge 4 and recharges valve 5, wherein recharges valve 5 and is specially three-way valve, can external pressue device；
The well-point pipe 14 that drainage cell row is laid by a charge for remittance arm 15 and some intervals is formed, charge for remittance arm 15 is horizontally disposed on ground, the upper end of each well-point pipe 14 is connected with this charge for remittance arm 15 by water sampling valve 8, by operating the closure or openness of water sampling valve 8 such that it is able to accurately control the break-make of each well-point pipe 14 and the water body flowed through at this carries out sample detecting, the original state of water sampling valve 8 is for opening；Well-point pipe 14 gos deep into as shown in Figure 2 to water-bearing layer；The outfan of charge for remittance arm 15 is disposed with water sampling valve 8, Pressure gauge 4, vacuum pump 7 and effusion meter 3, and wherein, the break-make of entire row well-point pipe 14 can be operated by water sampling valve 8 herein, and can detect the water quality flowed through at this；
It should be noted that, the mode that each row's well-point pipe 14 uses dislocation to lay with each row's injection well casing 6, the most as shown in Figure 1, 2, each well-point pipe 14 in drainage cell row is all arranged between adjacent two the injection well casings 6 recharged in unit row, thus realize complementation, draw water simultaneously and recharge, between well-point pipe 14 and injection well casing 6, forming a continuous print Hydraulic Circulation, accelerating replacing velocity and the response speed of medicament of circulation solution；
(3) as shown in Figure 1, 2, recharge main 9 together after being crossed by the input respectively recharging arm 10 to be connected, the other end recharging main 9 is then connected with backflow device 1, and is provided with main stop valve 2 on the pipeline recharging main 9, for controlling to recharge the break-make of main 9；
Being connected with charge for remittance main 12 after being crossed by the outfan of each charge for remittance arm 15, the other end of charge for remittance main 12 is then connected with captation 13, is used for reclaiming contaminant water and carrying out sewage disposal；
(4) as Figure 1-3, wait to take out after filling circular water treating system installs and connect, Polluted area carried out repair process:
Opening the water sampling valve 8 on each drainage cell row and vacuum pump 7 draws water, sewage imports in charge for remittance main 12 through each well-point pipe 14, and collected sewage is processed by captation 13；
Effusion meter 3 on charge for remittance arm detects when the water outlet water yield is less, open recharge on main 9 recharge main valve 2 and respectively recharge unit row in recharge valve 5, pressurizeed in each injection well casing 6 by backflow device 1 and pour into medicament or clear water, make medicament enter in pollution water and soil and react；Keep the operation of vacuum pump 7 simultaneously, drawn water by control and regulation and recharge efficiency, making water outlet and the amount of recharging tend towards stability, and maintain this operational situation, between well-point pipe 14 and injection well casing 6, form a continuous print Hydraulic Circulation, accelerate replacing velocity and the response speed of medicament of circulation solution；
(5) as Figure 1-3, during water-pumping/draining, utilize the water sampling valve 8 on charge for remittance arm 15 that effluent quality is carried out periodic detection, after the effluent quality in all well-point pipes 14 meets and repairs requirement, then twice of circulation clear water continuously；
Owing to contaminated site region is relatively big and geological conditions has difference, exist and repair uneven situation, i.e., regional area reaches to repair and requires and the regional area situation that not up to reparation requires, thus, use point method discharging into row reparation further, such as, as shown in Figure 1, 1st, in the sphere of action recharging unit row and drainage cell row of 2 rows, water and soil not up to repairs requirement, and water and soil reaches to repair requirement in the sphere of action of remaining element row, the water sampling valve 8 closed the most respectively in remaining element row on charge for remittance arm 15 and recharge and recharge valve 5 on arm 10, afterwards the drainage cell row recharging unit row and the 2nd row of the 1st row is further recharged and the pollution amelioration process of pump drainage polluting water and soil according to the method described in step (4), till detection reaches to repair requirement；
Certainly, for water and soil not up to pollution amelioration requirement in the sphere of action of indivedual injection well casings 6 and well-point pipe 14, remaining region all reaches the situation that pollution amelioration requires, then use the method that single tube carries out repairing, such as, open the water sampling valve 8 on area to be repaired injection well casing 6 and the water sampling valve 8 on area to be repaired well-point pipe 14, and close remaining injection well casing 6, water sampling valve 8 on well-point pipe 14, afterwards the injection well casing 6 at indivedual areas to be repaired and well-point pipe 14 are further recharged and the pollution amelioration process of pump drainage polluting water and soil according to the method described in step (4), till detection reaches to repair requirement.
Having the beneficial effects that of the present embodiment:
(1) extracting and recharge and carry out simultaneously, forming local hydraulic circulation, the efficiency of relatively conventional unidirectional processing method is more preferable, and cleaning and removal effect to pollutant are more preferable；
(2) described system takes out filling continuously, prevents unidirectional extracting and recharges the destruction of soil solidifying and the Soil structure caused not in time, it is ensured that the seriality for the treatment of effeciency.
(3) described system flexible operation, can carry out individual unit row's process, the control of the most single well point and management by valve respectively；
(4) recharging compared to the single injection of Traditional Man, this processing method efficiency is higher, saves a large amount of manpower, and can run with round-the-clock；
(5) treatment effect and processing cost are relatively low, especially preferable to there being certain area pollution effects that homogenizes, and are dynamically adjusted processing region scope by effluent quality, it is made progressively to reduce, more targeted, save the medicament waste that low level management brings, it is achieved that fine-grained management.
Claims (7)
1. take out filling circulating water treatment method for polluting the multichannel connection gang of wells of water and soil reparation for one kind, it is characterized in that the treating method comprises following steps: in the range of contaminated site to be repaired, unit row will be recharged and arrange, with drainage cell, the laying that the most alternately misplaces, wherein, described recharge unit row and recharged arm and some and described recharge the injection well casing that arm is connected and form by a level to arrange, the well-point pipe that described drainage cell row is connected to the charge for remittance arm arranged and some and described charge for remittance arm by a level forms, described alternately dislocation laying refers to well-point pipe described in injection well casing described in each row and each row very, alternately lay in even rows；It is connected recharging unit row described in each with backflow device afterwards, and each described drainage cell row is connected with captation；It is respectively started described backflow device and described captation contaminated site to be repaired is carried out injection to recharge and water-pumping/draining.
A kind of multichannel connection gang of wells for polluting water and soil reparation the most according to claim 1 takes out filling circulating water treatment method, it is characterised in that arrange water proof barrier in contaminated site scope outer rim to be repaired.
A kind of multichannel connection gang of wells for polluting water and soil reparation the most according to claim 1 takes out filling circulating water treatment method, it is characterised in that described injection well casing upper end and described well-point pipe upper end are provided with water sampling valve.
A kind of multichannel connection gang of wells for polluting water and soil reparation the most according to claim 1 takes out filling circulating water treatment method, it is characterized in that each described in recharge and be connected with described backflow device through recharging main after arm crosses, described in recharge main in be provided with main stop valve.
A kind of multichannel connection gang of wells for polluting water and soil reparation the most according to claim 1 takes out filling circulating water treatment method, it is characterised in that described in recharge the input of arm and be provided with and recharge valve, the outfan of described charge for remittance arm is provided with water sampling valve.
A kind of multichannel connection gang of wells for polluting water and soil reparation the most according to claim 5 takes out filling circulating water treatment method, it is characterized in that the actual repair situation according to contaminated site scope, close and reach to repair the valve that recharges requiring to recharge described in position in unit row and stop recharging and water sampling valve in described drainage cell row stops draining, and open remaining and not up to repair the valve that recharges requiring to recharge described in position in unit row and carry out recharging and water sampling valve in described drainage cell row carries out draining.
A kind of multichannel connection gang of wells for polluting water and soil reparation the most according to claim 3 takes out filling circulating water treatment method, it is characterized in that the actual repair situation according to contaminated site scope, open not up to repair and require that the described water sampling valve in the described injection well casing of position and described well-point pipe carries out recharging and draining, and close remaining and reach to repair the described water sampling valve required in the described injection well casing of position and described well-point pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610378346.4A CN106006771B (en) | 2016-06-01 | 2016-06-01 | Multichannel for polluting water and soil reparation is connected to gang of wells and takes out filling circulating water treatment method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610378346.4A CN106006771B (en) | 2016-06-01 | 2016-06-01 | Multichannel for polluting water and soil reparation is connected to gang of wells and takes out filling circulating water treatment method |
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| CN106006771A true CN106006771A (en) | 2016-10-12 |
| CN106006771B CN106006771B (en) | 2019-08-02 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848193A (en) * | 2018-12-31 | 2019-06-07 | 上海勘察设计研究院(集团)有限公司 | A kind of underground water in-situ remediation method based on waterpower barrier |
| CN110756572A (en) * | 2019-11-01 | 2020-02-07 | 彭秋霞 | Sustainable soil remediation system and remediation method thereof |
| CN111423069A (en) * | 2020-04-27 | 2020-07-17 | 北京市市政四建设工程有限责任公司 | Groundwater pumping treatment recharge system and groundwater treatment method |
| CN112517622A (en) * | 2020-11-18 | 2021-03-19 | 吉林大学 | Contaminated soil strengthening in-situ thermal desorption heating device and method |
| CN112808757A (en) * | 2020-12-29 | 2021-05-18 | 中科华鲁土壤修复工程有限公司 | Group type extraction and injection integrated repair system for small-area supply-free underground water well |
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| JP2004330084A (en) * | 2003-05-07 | 2004-11-25 | Kubota Corp | Method and equipment for contaminated-soil in situ treatment |
| JP2012110813A (en) * | 2010-11-24 | 2012-06-14 | Kajima Corp | Method for cleaning contaminated soil and groundwater region |
| CN104138896A (en) * | 2014-06-25 | 2014-11-12 | 东南大学 | In-situ pumping and injecting restoration device for polluted soil, restoring method and mounting method of restoration device |
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2016
- 2016-06-01 CN CN201610378346.4A patent/CN106006771B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004330084A (en) * | 2003-05-07 | 2004-11-25 | Kubota Corp | Method and equipment for contaminated-soil in situ treatment |
| JP2012110813A (en) * | 2010-11-24 | 2012-06-14 | Kajima Corp | Method for cleaning contaminated soil and groundwater region |
| CN104138896A (en) * | 2014-06-25 | 2014-11-12 | 东南大学 | In-situ pumping and injecting restoration device for polluted soil, restoring method and mounting method of restoration device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848193A (en) * | 2018-12-31 | 2019-06-07 | 上海勘察设计研究院(集团)有限公司 | A kind of underground water in-situ remediation method based on waterpower barrier |
| CN109848193B (en) * | 2018-12-31 | 2021-01-12 | 上海勘察设计研究院(集团)有限公司 | Underground water in-situ remediation method based on hydraulic barrier |
| CN110756572A (en) * | 2019-11-01 | 2020-02-07 | 彭秋霞 | Sustainable soil remediation system and remediation method thereof |
| CN110756572B (en) * | 2019-11-01 | 2020-12-08 | 江西景华生态科技股份有限公司 | Sustainable soil remediation system and remediation method thereof |
| CN111423069A (en) * | 2020-04-27 | 2020-07-17 | 北京市市政四建设工程有限责任公司 | Groundwater pumping treatment recharge system and groundwater treatment method |
| CN112517622A (en) * | 2020-11-18 | 2021-03-19 | 吉林大学 | Contaminated soil strengthening in-situ thermal desorption heating device and method |
| CN112517622B (en) * | 2020-11-18 | 2022-01-28 | 吉林大学 | Contaminated soil strengthening in-situ thermal desorption heating device and method |
| CN112808757A (en) * | 2020-12-29 | 2021-05-18 | 中科华鲁土壤修复工程有限公司 | Group type extraction and injection integrated repair system for small-area supply-free underground water well |
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| Publication number | Publication date |
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| CN106006771B (en) | 2019-08-02 |
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