CN208912793U - Multiphase extraction system for gas station's soil and groundwater remediation - Google Patents
Multiphase extraction system for gas station's soil and groundwater remediation Download PDFInfo
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- CN208912793U CN208912793U CN201821151972.0U CN201821151972U CN208912793U CN 208912793 U CN208912793 U CN 208912793U CN 201821151972 U CN201821151972 U CN 201821151972U CN 208912793 U CN208912793 U CN 208912793U
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Abstract
The utility model provides the multiphase extraction system for gas station's soil and groundwater remediation, including ventilation unit, extraction unit, and precipitation unit extracts gas disposal unit out, extracts water treatment unit and extraction well and pumped well out；The ventilation unit, extraction unit, precipitation unit, extraction gas disposal unit and extraction water treatment unit are arranged on gas station's contaminated soil localized ground, extraction well is obliquely installed under gas station's contaminated soil localized ground from gas station side, pumped well is vertically installed under gas station's contaminated soil localized ground from gas station side, and extraction well passes through extraction unit respectively with pumped well and connects extraction gas disposal unit and extraction water treatment unit with precipitation unit.By extraction well and pumped well, from gas station side, inclination pierces gas station contaminated soil region to the utility model, gas station's normal operation is not influenced during multiphase extracts and repairs gas station's soil underground water, and gas station's contaminated soil and underground water can efficiently and be thoroughly repaired, it is low in cost.
Description
Technical field
The utility model belongs to environment remediation technical field, and in particular to a kind of for gas station's soil and groundwater remediation
Multiphase extraction system.
Background technique
Gas station's buried tank leakage pollution soil underground water is generally existing in developed country, soil caused by gas station's oil leak
Earth underground water pollution has become one of maximum contamination accident of developed country.It refuels it is reported that China has at present close to 100,000
It stands, because primary construction is more early, numerous buried tanks are steel single layer tank, the soil and underground water pollution thing that tank leakage causes
Therefore the light-weight fuel oil for taking place frequently, and leaking has stronger migration, serious contaminated soil and underground water, needs using suitable
Method, which is administered, repairs.
Multiphase extracting is a kind of environment amenable soil and groudwater remediation technology, it has, and remediation efficiency is high, influences
The advantages that area is big and suitable high density pollution soil remediation.Multiphase extraction technique extracts underground dirt by extraction well
Soil gas, the underground water in dye region are mutually separated with oil slick layer to ground, are handled, with control and rehabilitating soil and underground water
The environment remediation technology of middle organic pollution.
However, multiphase extracting must arrange vertical extraction well in Polluted area in traditional Normal practice, thus will pollution
Object extracting is handled to ground, and mattess setting extraction well is abolished in gas station, will certainly be to gas station just
Often operation causes certain negative effect.
Utility model content
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides one kind for gas station's soil
It is lauched the multiphase extraction system of reparation, while not influencing gas station's normal operation, by follow-on multiphase extraction technique,
So that Polluted area reparation is highly efficient and thorough.
There is provided the multiphase extraction system for gas station's soil and groundwater remediation, packets for the technical solution of the utility model
The ventilation unit that air is uniformly injected into gas station contaminated soil region is included, from gas station contaminated soil region extraction stain object
Extraction unit, precipitation unit, extraction well and pumped well, and extraction gas disposal unit and extraction water to the processing of extraction stain object
Processing unit；The ventilation unit, extraction unit, precipitation unit, extraction gas disposal unit and extraction water treatment unit are respectively provided with
On gas station's contaminated soil localized ground, the extraction well is obliquely installed from gas station side in gas station contaminated soil region
Subsurface, the pumped well are vertically installed under gas station's contaminated soil localized ground from gas station side, the extraction well and
Pumped well passes through extraction unit respectively and connects extraction gas disposal unit and extraction water treatment unit with precipitation unit.
Further, the extraction unit includes vacuum pump and extracting general pipeline, the lower end extracting general pipeline and the extracting
Well is connected, and the extracting upper end general pipeline is connected with the entrance of the extraction gas disposal unit, and the extraction gas disposal unit goes out
Mouth is connected with the vacuum pump.
Further, check-valves and gas flowmeter, the gas flowmeter position are disposed on the extracting general pipeline
In one end close to extraction gas disposal unit.
Further, the extraction gas disposal unit includes sequentially connected moisture trap and photodissociation purification device, institute
The entrance for stating moisture trap is connect with the extracting general pipeline, the water out of the moisture trap and the extraction water process list
Member connection, the outlet of the photodissociation purification device are connect with the arrival end of the vacuum pump, the outlet end connection of the vacuum pump
Evacuated tube.
It further, is to be in tilted layout, and a pumping is equipped in each extraction well if the extraction well has dry eyes
Gas is in charge of to be in charge of with a gas injection, and the described one end being in charge of that is evacuated is protruded into the extraction well, the other end and the extraction unit
Connection, one end that the gas injection is in charge of are protruded into the extraction well, and the other end is connect with the ventilation unit.
Further, the precipitation unit includes suction pump and pumping conduit, and the pumping conduit upper end is drawn water with described
Pump connection, the pumping conduit lower end is protruded into the pumped well, and Polluted Soil is goed deep into pumping conduit bottom in the pumped well
5~10cm below earth region interface or level of ground water.
Further, the ventilation unit includes blower, ventilation shaft, standing reservoir device and gas injection well, described
Gas injection well is obliquely installed under gas station's contaminated soil localized ground from gas station side, the fan outlet and standing reservoir
Device outlet is connected with ventilation shaft, the end of the ventilation shaft is divided into two parts, respectively with the gas injection well and extracting
Well is connected.
Further, it is stored with nutrient solution in the standing reservoir device, which includes potassium dihydrogen phosphate, chlorination
Calcium, ammonium sulfate, bacillus, pseudomonad, lipase, any three kinds or more in dehydrogenase.
Compared with prior art, the utility model has the beneficial effects that
(1) extraction well in this multiphase extraction system for gas station's soil and groundwater remediation provided by the utility model
Gas station contaminated soil region is pierced from gas station side with pumped well, is extracted in multiphase and repairs gas station's soil underground water mistake
Gas station's normal operation is not influenced in journey, and can efficiently and thoroughly repair gas station's contaminated soil and underground water, it is at low cost
It is honest and clean.
(2) extraction well in this multiphase extraction system for gas station's soil and groundwater remediation provided by the utility model
It is inclined shaft arrangement, considerably increases the contact area of injection air and contaminated soil, and optimizes injection air in Polluted Soil
Migration path in earth.
(3) this multiphase extraction system flexibility for gas station's soil and groundwater remediation provided by the utility model
By force, ventilation unit, extraction unit and precipitation unit independent or combined can be run, and can be changed according to Polluted area pollutant concentration
Situation is flexibly run.
(4) it divulges information in this multiphase extraction system for gas station's soil and groundwater remediation provided by the utility model single
Member includes the nutrient solution added with microbial bacterial agent, can be simultaneously while promotion pollutant is desorbed from soil and enters gas phase
Realize the function of microbial bacteria degradation of contaminant, macromolecule contaminant is degraded to small molecule contaminants, is easier to be desorbed from soil
Into gas phase.
(5) this multiphase extraction system for gas station's soil and groundwater remediation provided by the utility model passes through control
Pumping gas alternate run in extraction well greatly improves pollutant and the efficiency for entering gas phase is desorbed from soil.
The utility model is described in further details below with reference to attached drawing.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the utility model for the multiphase extraction system of gas station's soil and groundwater remediation.
Description of symbols: 1, evacuated tube；2, vacuum pump；3, photodissociation purification device；4, moisture trap；5, gas flow
Meter；6, check-valves；7, general pipeline is extracted；8, suction pump；9, pumping is in charge of；10, the second valve；11, standing reservoir device；12,
Blower；13, the first valve；14, gas injection is in charge of；15, gas injection well；16, extraction well；17, pumped well；18, water treatment unit is extracted out；
19, drainpipe；20, gas station.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
All other embodiment obtained, fall within the protection scope of the utility model.
In the description of the present invention, it should be understood that term " center ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion is signified
Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this is practical
Novel limitation.
As shown in Figure 1, present embodiments providing a kind of multiphase extraction system for gas station's soil and groundwater remediation, wrap
The ventilation unit that air is uniformly injected into gas station contaminated soil region is included, from gas station contaminated soil region extraction stain object
Extraction unit, precipitation unit, extraction well 16 and pumped well 17, and extraction gas disposal unit and pumping to the processing of extraction stain object
Water treatment unit 18 out；The ventilation unit, extraction unit, precipitation unit, extraction gas disposal unit and extraction water treatment unit
18 are arranged on gas station's contaminated soil localized ground, and the extraction well 16 is obliquely installed from 20 side of gas station in gas station
Under contaminated soil localized ground, the pumped well 17 is vertically installed in gas station's contaminated soil localized ground from 20 side of gas station
Under, the extraction well 16 connects extraction gas disposal unit and extraction water with pumped well 17 by extraction unit with precipitation unit respectively
Processing unit 18.Multiphase extraction system provided by the utility model for gas station's soil and groundwater remediation passes through ventilation unit
Air is injected to gas station contaminated soil region, and passes through extraction unit and precipitation unit for the soil in gas station contaminated soil region
Earth gas and underground water pump-and-treat system realize multiphase so as to efficient and thorough reparation gas station's contaminated soil and underground water
Processing function, it is low in cost, and extraction well 16 and pumped well 17 are pierced into contaminated soil area, gas station from 20 side of gas station
Domain avoids abolishing mattess setting extraction well 16 and pumped well 17 in gas station 20, can not influence gas station 17 just
Often operation, while extraction well 16 is in tilted layout and also greatly increases the contact area of injection air and contaminated soil, and optimizes
Migration path of the air in contaminated soil is injected, it can contaminated soil in more efficient restoring area.
The embodiment of refinement, the extraction unit include vacuum pump 2 and extracting general pipeline 7,7 lower end extracting general pipeline and
The extraction well 16 is connected, and extracting 7 upper end general pipeline is connected with the entrance of the extraction gas disposal unit, at the extraction gas
The outlet of reason unit is connected with the vacuum pump 2；The precipitation unit includes suction pump 8 and pumping conduit, the pumping conduit
Upper end is connect with the suction pump 8, and the pumping conduit lower end is protruded into the pumped well 17, by suction pump 8 by underground water
It is drawn to reuse or discharge after extraction water treatment unit 18 is handled, while pumping rate and underground water return water rate being kept to protect
It holds consistent, it is ensured that underground water interface is located at evacuated region or less；Optimization, pumping conduit bottom deeply dirt in the pumped well 17
Contaminate 5~10cm of soil region interface or level of ground water or less.The present embodiment intermediate pump 2 and suction pump 8 provide extracting power, double
Pump is placed on ground, respective independent operating, by soil gas in gas station contaminated soil region and underground water respectively from extracting
It is extracted out in well 16 and pumped well 17 and subsequent processing is carried out by extraction gas disposal unit and extraction water treatment unit 18.Specifically
, the extraction gas disposal unit includes sequentially connected moisture trap 4 and photodissociation purification device 3, the moisture trap 4
Entrance connect with the extracting general pipeline 7, the water out of the moisture trap 4 is connect with the extraction water treatment unit 18,
The outlet of the photodissociation purification device 3 is connect with the arrival end of the vacuum pump 2, and the outlet end of the vacuum pump 2 connects emptying
Pipe 1；The gas extracted out from gas station contaminated soil region is separated by moisture trap 4, and the gas phase isolated enters
In photodissociation purification device 3, by high energy ultraviolet in photodissociation purification device 4 and catalyst by organic pollutant degradation in gas phase
It is converted to low molecular compound, water and carbon dioxide, is discharged after gas phase treatment is up to standard by evacuated tube 1, and through moisture trap 4
The liquid phase isolated then is delivered to extraction water treatment unit 18 and carries out water process, handle it is up to standard after discharged by drainpipe 19 or existing
Field reuse, the extraction water treatment unit 18 can be Mobile water processor, such as mobile CMF device.Optimization, institute
It states and is disposed with check-valves 6 and gas flowmeter 5 on extracting general pipeline 7, the gas flowmeter 5 is located at close to extraction gas disposal
One end of unit, the effect of check-valves 6 be under 2 halted state of vacuum pump, avoid outside air by be evacuated general pipeline 7 flow backwards into
Enter in extraction well 16, it is ensured that sealing and subnormal ambient in extraction well 16；The setting of gas flowmeter 5 for the stripping gas scale of construction into
Row real time measure.
It is to be in tilted layout if the extraction well 16 has dry eyes as a kind of embodiment of optimization, and each extracting
Be equipped in well 16 pumping be in charge of 9 and a gas injection be in charge of 14, the extraction well 16 is protruded into one end that the pumping is in charge of 9
Interior, the other end is connect with the extraction unit, and one end that the gas injection is in charge of 14 is protruded into the extraction well 16, the other end and institute
State ventilation unit connection, in extraction well 16 after pumping operation a period of time can temporary close, start gas injection, gas injection runs one section
After time can temporary close, starting pumping, so pumping and gas injection alternate run, be greatly improved pollutant from soil take off
The attached efficiency into gas phase；And the ventilation unit to gas station contaminated soil region is uniformly injected into air and into extraction well 16
Gas injection be in charge of middle injection air can be respectively by the individually control of the first valve 13 and the second valve 10.Further, each described
The surrounding of extraction well 16 is successively arranged micro-expansion cement or cement bentonite grout blanket, bentonite sealant and quartz from top to bottom
The sand filtration bed of material；Micro-expansion cement or cement bentonite grout blanket are located at top layer, enter extracting region for completely cutting off ambient atmosphere,
Formation and maintenance to evacuated region vacuum degree is most important, and bentonite sealant is located at micro-expansion cement or cement bentonite fills
Under pulp layer, plays the role of secondary isolation outside air and enter extracting region, being located at undermost quartz sand filter media layer is filter
Air screen barrier, plays good filtration.
In addition, the ventilation unit includes blower 12, ventilation shaft, standing reservoir device 11 and gas injection well 15, institute
It states gas injection well 15 to be obliquely installed under gas station's contaminated soil localized ground from 20 side of gas station, the outlet of blower 12 and battalion
Nutrient solution storage device 11, which exports, to be connected with ventilation shaft, and the end of the ventilation shaft is divided into two parts, respectively with the note
Gas well 15 is connected with extraction well 16, and the nutrient solution added with microbial bacterial agent can be sprayed to logical by the standing reservoir device 11
In air piping in gas, the gas for carrying nutrient solution is injected into contaminated soil region, in promotion pollutant from soil
It is desorbed while entering gas phase, it can be achieved that the function of microbial bacteria degradation of contaminant, macromolecule contaminant are degraded to small molecule dirt
Object is contaminated, the desorption from soil is easier to and enters gas phase.Further, it is stored with nutrient solution in the standing reservoir device 11, it should
Nutrient solution includes potassium dihydrogen phosphate, calcium chloride, ammonium sulfate, bacillus, pseudomonad, lipase, any three in dehydrogenase
Kind or three kinds or more；Preferred nutrient solution includes dehydrogenase, and dehydrogenase can be such that the hydrogen atom of petroleum oxidate hydrocarbon activates, and pass to
Specific hydrogen acceptor speeds up to realize the oxidation and conversion of petroleum hydrocarbon, it is promoted to be degraded by microorganisms, or is desorbed into gas phase in turn
It is extracted by pump-line.
The operating instruction of the utility model opens suction pump 8, and precipitation unit brings into operation, and extracts water out from pumped well 17
It is handled into extraction water treatment unit 18, reuse or discharge after water process is up to standard；Then, blower 12 and the first valve 13 are opened,
The second valve 10 is closed, ventilation unit brings into operation, and is uniformly injected into air to gas station contaminated soil region by gas injection well 15；
Vacuum pump 2 is opened again, and extraction unit brings into operation, and extraction gas successively passes through moisture trap 4 from extraction well 16 and photodissociation is net
Makeup is emptied after setting 3 by evacuated tube 1, and the liquid that moisture trap 4 is separated enters extraction water treatment unit 18 and handles；Most
Afterwards, blower 12 is closed, the second valve 10 is opened, draft range expands to extraction well 16, and extraction well 16 is converted to from air extracting function
Gas injection function promotes in region the degradation of organic matter and desorption in contaminated soil, later pumping and gas injection alternating in extraction well 16
Operation.
The utility model strong flexibility, ventilation unit, extraction unit and precipitation unit independent or combined can be run, can root
It is flexibly run according to Polluted area pollutant concentration situation of change.
Exemplified as above is only to the utility model for example, not constituting to the protection scope of the utility model
Limitation, it is all to be belonged within the protection scope of the utility model with the same or similar design of the utility model.
Claims (8)
1. being used for the multiphase extraction system of gas station's soil and groundwater remediation, it is characterised in that: including to gas station's contaminated soil
Region is uniformly injected into the ventilation unit of air, from the extraction unit of gas station contaminated soil region extraction stain object, precipitation unit,
Extraction well and pumped well, and extraction gas disposal unit and extraction water treatment unit to the processing of extraction stain object；The ventilation
Unit, extraction unit, precipitation unit, extraction gas disposal unit and extraction water treatment unit are arranged at contaminated soil area, gas station
On the ground of domain, the extraction well is obliquely installed under gas station's contaminated soil localized ground from gas station side, the pumped well
It is vertically installed under gas station's contaminated soil localized ground from gas station side, the extraction well and pumped well pass through extracting respectively
Unit connects extraction gas disposal unit and extraction water treatment unit with precipitation unit.
2. being used for the multiphase extraction system of gas station's soil and groundwater remediation as described in claim 1, it is characterised in that: described
Extraction unit includes vacuum pump and extracting general pipeline, and the lower end extracting general pipeline is connected with the extraction well, on the extracting general pipeline
It holds and is connected with the entrance of the extraction gas disposal unit, the outlet of the extraction gas disposal unit is connected with the vacuum pump.
3. being used for the multiphase extraction system of gas station's soil and groundwater remediation as claimed in claim 2, it is characterised in that: described
Check-valves and gas flowmeter are disposed on extracting general pipeline, the gas flowmeter is located at close to extraction gas disposal unit
One end.
4. being used for the multiphase extraction system of gas station's soil and groundwater remediation as claimed in claim 2, it is characterised in that: described
Extraction gas disposal unit includes sequentially connected moisture trap and photodissociation purification device, the entrance of the moisture trap and institute
Extracting general pipeline connection is stated, the water out of the moisture trap is connect with the extraction water treatment unit, the photodissociation purification dress
The outlet set is connect with the arrival end of the vacuum pump, and the outlet end of the vacuum pump connects evacuated tube.
5. being used for the multiphase extraction system of gas station's soil and groundwater remediation as described in claim 1, it is characterised in that: described
It is to be in tilted layout, and be equipped with one in each extraction well and be evacuated to be in charge of and be in charge of with a gas injection if extraction well has dry eyes,
Described one end for being in charge of of being evacuated is protruded into the extraction well, and the other end is connect with the extraction unit, the gas injection be in charge of one
End is protruded into the extraction well, and the other end is connect with the ventilation unit.
6. being used for the multiphase extraction system of gas station's soil and groundwater remediation as described in claim 1, it is characterised in that: described
Precipitation unit includes suction pump and pumping conduit, and the pumping conduit upper end is connect with the suction pump, under the pumping conduit
End protrude into the pumped well, and in the pumped well pumping conduit bottom go deep into contaminated soil region interface or level of ground water with
Lower 5~10cm.
7. being used for the multiphase extraction system of gas station's soil and groundwater remediation as described in claim 1, it is characterised in that: described
Ventilation unit includes blower, ventilation shaft, standing reservoir device and gas injection well, and the gas injection well is tilted from gas station side
Be set under gas station's contaminated soil localized ground, the fan outlet and standing reservoir device outlet with ventilation shaft phase
Even, the end of the ventilation shaft is divided into two parts, is connected respectively with the gas injection well and extraction well.
8. being used for the multiphase extraction system of gas station's soil and groundwater remediation as claimed in claim 7, it is characterised in that: described
It is stored with nutrient solution in standing reservoir device, which includes potassium dihydrogen phosphate, calcium chloride, ammonium sulfate, bacillus, vacation
Monad, lipase, any three kinds or more in dehydrogenase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821151972.0U CN208912793U (en) | 2018-07-20 | 2018-07-20 | Multiphase extraction system for gas station's soil and groundwater remediation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821151972.0U CN208912793U (en) | 2018-07-20 | 2018-07-20 | Multiphase extraction system for gas station's soil and groundwater remediation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208912793U true CN208912793U (en) | 2019-05-31 |
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ID=66694399
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821151972.0U Active CN208912793U (en) | 2018-07-20 | 2018-07-20 | Multiphase extraction system for gas station's soil and groundwater remediation |
Country Status (1)
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| CN (1) | CN208912793U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108817053A (en) * | 2018-07-20 | 2018-11-16 | 武汉都市环保工程技术股份有限公司 | Multiphase extraction system and its control method for gas station's soil and groundwater remediation |
| CN114289493A (en) * | 2021-12-31 | 2022-04-08 | 北京建工环境修复股份有限公司 | System and method for repairing polluted soil |
-
2018
- 2018-07-20 CN CN201821151972.0U patent/CN208912793U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108817053A (en) * | 2018-07-20 | 2018-11-16 | 武汉都市环保工程技术股份有限公司 | Multiphase extraction system and its control method for gas station's soil and groundwater remediation |
| CN114289493A (en) * | 2021-12-31 | 2022-04-08 | 北京建工环境修复股份有限公司 | System and method for repairing polluted soil |
| CN114289493B (en) * | 2021-12-31 | 2023-09-29 | 北京建工环境修复股份有限公司 | System and method for repairing polluted soil |
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