CN110227711A - A kind of soil remediation method and system - Google Patents
A kind of soil remediation method and system Download PDFInfo
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- CN110227711A CN110227711A CN201910629150.1A CN201910629150A CN110227711A CN 110227711 A CN110227711 A CN 110227711A CN 201910629150 A CN201910629150 A CN 201910629150A CN 110227711 A CN110227711 A CN 110227711A
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- pressure
- medical fluid
- medicament
- reparation
- formation
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
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- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The embodiment of the invention discloses a kind of soil remediation method and systems, this method is applied to soil repair system, soil repair system includes pulse generating unit and injection device, wherein this method comprises: pulse generating unit carries out control of shutting off according to the pulse frequency of setting to reparation medical fluid；Reparation medical fluid after control of shutting off is injected formation at target locations by injection device, wherein pulse frequency is configured according to the permeability of formation at target locations.The embodiment of the present invention is propagated by carrying out control of shutting off to reparation medical fluid, so that repairing medical fluid and generating pulse energy in formation at target locations.If stratum is in unsaturated state, the soil permeability of formation at target locations can be improved in pulse energy, reparation medical fluid is come into full contact with pollutant, reduce stratum macrovoid isopreference channel in injection process, as soil moisture content improves, stratum tends to be saturated, and it is farther that pulse energy enables to reparation medical fluid to penetrate.Construction cost is not only reduced, and also reduces the security risk of construction.
Description
Technical field
The present embodiments relate to environment project more particularly to a kind of soil remediation method and systems.
Background technique
In recent years, with the policy executions such as urban industrial structure adjustment and the garden Tui Chengru, retired industrial enterprise's Pollution Field
Ground many places are in main city zone, and there are biggish Environmental security hidden danger and human health risks.Particularly, volatility and half volatile have
Machine pollutant, soluble heavy metal (Cr VI) can be migrated never to deep layer zone of saturation zone of saturation, to groundwater resources structure
At threat.
For other technologies, it is directed to organic matter, in situ chemical oxidation/reduction recovery technique (ISCO/ISCR) at present
Have the advantages that removal efficiency is high, repairing efficiency is short, secondary pollution is easily controllable, processing cost is low etc..Existing in-situ chemical oxygen
Change/reduction recovery technique mainly carries out adding for medicament by injecting, to improve repairing effect, so that pollutant is filled with medicament
Tap touching, major way have: (1) improving injection pressure and medicament injection volume；(2) it takes and increases injector well layout density.More than
Measure not only increases recovery project operation, and energy consumption is high, and excessively high pressure will cause grout or form excessive crack, lead to medicine
Agent is spread to nontarget area, improves rehabilitation cost, while increasing construction safety hidden danger.
Summary of the invention
The embodiment of the present invention provides a kind of soil remediation method and system, and liquid medicine injection will be repaired by the way of impulses injection
Enter to pollution stratum, is spread using the promotion medicament of pulse energy, improve the remediation efficiency to soil.
In a first aspect, being applied to soil repair system, the soil the embodiment of the invention provides a kind of soil remediation method
Earth repair system includes pulse generating unit and injection device, wherein the described method includes:
Pulse generating unit carries out control of shutting off according to the pulse frequency of setting to reparation medical fluid；
Reparation medical fluid after control of shutting off is injected formation at target locations by injection device, wherein the pulse frequency is according to mesh
The permeability on mark stratum is configured.
Second aspect, the embodiment of the invention also provides a kind of soil repair systems, comprising: pulse generating unit and injection
Device, wherein
The pulse generating unit is used to carry out control of shutting off according to the pulse frequency of setting to reparation medical fluid；
The injection device is for the reparation medical fluid injection formation at target locations after the control that will shut off, wherein the pulse frequency
It is configured according to the permeability of formation at target locations.
The present invention by pulse generating unit to repair medical fluid carry out control of shutting off so that reparation medical fluid in a pulsed fashion by
It is injected into formation at target locations, and then repairs medical fluid and is propagated in a manner of pulse energy in formation at target locations, if stratum is in unsaturation
The soil permeability of formation at target locations can be improved in state, pulse energy, and reparation medical fluid is come into full contact with pollutant, is subtracted
Stratum macrovoid isopreference channel in small injection process, as soil moisture content improves, stratum tends to be saturated, and pulse energy can
So that repair medical fluid penetrate it is farther.Using these features of pulse energy, injection pressure can not improved and repairing medical fluid
Injection rate in the case where, can realize, which will repair medical fluid, comes into full contact with pollutant, and reparation medical fluid is propagated to
Farther region improves the dilation angle for repairing medical fluid, not only reduces construction cost, and the safety for also reducing construction is hidden
Suffer from, soil remediation can be carried out to densely populated area, and can be suitable for from low-permeability argillic horizon to high osmosis
Layer of sand improves the scope of application of soil remediation.
Detailed description of the invention
Fig. 1 is the flow chart of one of the embodiment of the present invention one soil remediation method；
Fig. 2 is the flow chart of one of the embodiment of the present invention two soil remediation method；
Fig. 3 is the structural schematic diagram of one of the embodiment of the present invention three soil repair system；
Fig. 4 is the structural schematic diagram of one of the embodiment of the present invention four soil repair system；
Fig. 5 is the structural schematic diagram of one of embodiment of the present invention four pulsed soil repair system.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Embodiment one
Fig. 1 is the flow chart of a kind of soil remediation method that the embodiment of the present invention one provides, and the present embodiment is applicable to pair
The case where contaminated soil is repaired, this method can be executed by soil repair system, which includes pulse
Generating device and injection device, correspondingly, the soil remediation method specifically comprise the following steps:
S110, pulse generating unit carry out control of shutting off according to the pulse frequency of setting to reparation medical fluid.
Wherein, pulse generating unit is that can carry out the device for being spaced control of shutting off to medical fluid is repaired, by reparation medicine
Liquid is shut off control at intervals, is enabled and is repaired medical fluid and exported at set time intervals, i.e., according to setting
Pulse frequency is exported.
Control shut off for the control for carrying out interval conducting to reparation medical fluid, passes through leading for control pulse generating unit intermittent
Logical, the reparation medical fluid for passing through pulse generating unit is exported by intermittent.
Before control of shutting off, repairing medical fluid is the liquid continuously flowed, because pulse generating unit is interval conducting, thus
Under the action of pulse generating unit, it is defeated can to realize that the reparation medical fluid that will continuously flow is spaced according to set frequency
Out.For example, can be by installing a control valve in the delivery outlet for repairing medical fluid, control valve carries out at set time intervals
Conducting, when control valve conducting, repairing medical fluid can flow out from pulse generating unit；When control valve is closed, medical fluid is repaired
Will be truncated, be flowed out until control valve next time is connected, then from pulse generating unit, make to repair therefrom medical fluid according to
The turn-on frequency of control valve is exported by interval, realizes the control of shutting off to medical fluid is repaired.
Reparation medical fluid after control of shutting off is injected formation at target locations by S120, injection device, wherein pulse frequency is according to target
The permeability on stratum is configured.
Wherein, injection device is that the reparation medical fluid after shutting off control is injected into the device of formation at target locations.Injection device with
Pulse generating unit is connected, and the reparation medical fluid in this way after extra pulse is shut off will be transported to injection device.
Formation at target locations is pedostratigraphy to be repaired, is injected into formation at target locations by that will repair medical fluid, repairs medical fluid
To carry out oxidation or reduction reaction with contaminated soil, the reparation to contaminated soil is realized.
The pulse frequency of pulse generating unit is adjusted according to the permeability of formation at target locations, wherein permeability refers to
Under certain pressure difference, the ability that soil allows fluid from, permeability is the parameter for characterizing soil itself and conducting liquid ability.It is right
In low permeability formation, the filtrational resistance for repairing medical fluid is larger, thus repairs medical fluid and be pushed slowly or can not permeate.Thus in soil
In the repair process of earth, the permeability according to formation at target locations is needed, pulse frequency is reasonably set, so that repairing medical fluid on stratum
It is saturated under pressure to more far region.Specifically, when increasing for the permeability of high permeability formation or stratum, then arteries and veins is adjusted
Rush frequency increase；When reducing for the permeability of low permeability formation or stratum, then pulse frequency reduction is adjusted.
Soil remediation method provided in an embodiment of the present invention, its working principle is that: pulse injection can generate compression shock wave,
The compression shock wave propagates energy in formation at target locations.Medical fluid is repaired after the shutting off of pulse generating unit, outburst can be generated
Property waterpower pulse pressure, the formation at target locations for repairing medical fluid input pollution can be pushed by the waterpower pulse pressure, and with arteries and veins
The mode for rushing energy is propagated in formation at target locations, and pulse energy has in the transmission capacity of formation at target locations and the saturation state of formation at target locations
It closes, thus repairs medical fluid to be divided into three phases in the communication process of formation at target locations:
First stage is that formation at target locations is in unsaturated state, and during being somebody's turn to do, pulse energy is total using water hammer, standing wave
The vibration principles such as phenomenon and mechanical oscillation de-plugging, can be improved the soil permeability of formation at target locations, especially low permeability areas,
Medical fluid is repaired close to the region of injection device more uniformly to mix with contaminated soil, is come into full contact with so that repairing medical fluid with pollutant
Reaction.
Second stage is that formation at target locations is in a saturated state, and during being somebody's turn to do, the pulse energy rate of decay slows down, pulse energy
Reparation medical fluid is pushed to propagate to farther region, therefore more medical fluids of repairing are injected into Polluted area.
Phase III is that formation at target locations is in hypersaturated state, during being somebody's turn to do, on the one hand, be laminated under supersaturation state
Power increases, and reparation medical fluid can be made to infiltrate into more far region under strata pressure；On the other hand, because of shadow by strata pressure
It rings, it is understood that there may be repair medical fluid and flow back into injection device, impulse wave can prevent from causing to inject because returning slurry using de-plugging principle
The phenomenon that device blocks.
The technical solution of the present embodiment carries out control of shutting off to medical fluid is repaired by pulse generating unit, so that repairing medicine
Liquid is injected into formation at target locations in a pulsed fashion, and then repairs medical fluid and propagated in a manner of pulse energy in formation at target locations, if
Stratum is in unsaturated state, and the soil permeability of formation at target locations can be improved in pulse energy, enables and repairs medical fluid and dirt
Dye object comes into full contact with, and reduces stratum macrovoid isopreference channel in injection process, as soil moisture content improves, stratum tends to be full
With, pulse energy enable to repair medical fluid penetrate it is farther.Using these features of pulse energy, injection pressure can not improved
Power and in the case where not increasing the injection rate for repairing medical fluid, can realize, which will repair medical fluid, comes into full contact with pollutant, with
And reparation medical fluid is made to propagate to farther region, the range of scatter for repairing medical fluid is improved, construction cost is not only reduced, and
The security risk of construction is also reduced, soil remediation can be carried out to densely populated area, and can be suitable for from hypotonic
Permeability argillic horizon improves the scope of application of soil remediation to high osmosis layer of sand.
Embodiment two
Fig. 2 is a kind of flow chart of soil remediation method provided by Embodiment 2 of the present invention, and the present embodiment is in above-mentioned implementation
It is optimized on the basis of example, this method can be executed by soil repair system, which includes: pressure control
Device, pulse generating unit and injection device, correspondingly, the soil remediation method specifically include:
S210, pressure control device control repair medical fluid and form the medicament stream that pressure value changes within the set range.
Wherein, pressure control device is the device that can generate setting pressure, pressure control device and pulse generating unit
It is connected, the reparation medical fluid after pressure treatment is delivered to pulse generating unit to realize.Pressure control device can basis
Stratum permeability and device maximum bearing capacity are adjusted its operating pressure, for example, due to the heterogeneity on stratum, infiltration
Property the setting of high stratum (such as layer of sand) pressure it is relatively small, the setting of permeability low land layer (such as argillic horizon) pressure is relatively high.In addition,
In order to guarantee that pressure control device can work normally, need for pressure value to be arranged in the maximum allowble pressure of pressure control device
In value.Pass through the reparation medicine that pressure control device flexible setting pressure, on the one hand can guarantee to export from pressure control device
Liquid is the reparation medical fluid for meeting pressure requirements, on the other hand can guarantee pressure control device, pulse generating unit and injection
Device can work normally.
Traditional static pressure injecting method firstly flows through the lesser Thief zone of resistance for inhomogeneous formation, the reparation medical fluid of injection
Property region, by prolonged souring, the permeability of high permeability area is further increased, occur burst reaction, formed
Stable fluid-channeling channel.And to low permeability layer, since the filtrational resistance of injection medicament is larger, medicament is caused to be pushed slowly or nothing
Method infiltration, most medicament flow into the relatively small fluid-channeling channel of resistance, cause a large amount of Polluted areas not in contact with to medicament, reduce
Remediation efficiency.The fluid-channeling channel generated is flowed into order to avoid repairing medical fluid in static pressure injection process, causes most of reparation
Medical fluid can not reach the area to be repaired of formation at target locations, and the pressure control device output in the embodiment of the present invention is to become in the period
The dynamic pressure of change is controlled using dynamic pressure medical fluid is repaired, so that repairing medical fluid is capable of forming pressure cycle change
The medicament stream of change.Optionally, which specifically includes: pressure pump and accumulator, wherein
Pressure pump is used to be formed to medical fluid progress pressurized treatment is repaired so that repairing after medical fluid is pressurized to certain pressure
First pressure medicament stream；First pressure medicament stream therein can be the medicament stream of constant pressure, be also possible to Pressure behaviour variation
Medicament stream, for example, during repairing liquid medicine flow, it, can be so that pressure pump by adjusting the operating pressure of pressure pump
The first pressure medicament stream of output pressure value variation.
Accumulator is used to carry out accumulation of energy pressurization to first pressure medicament stream, because the volume of accumulator is certain, thus passes through
Accumulation of energy just realizes pressurized treatment, and by accumulation of energy, treated that first pressure medicament stream is pressurized to form second pressure medicine in this way
Agent stream；Then accumulator discharges gathered pressure, and second pressure medicament stream is exported.
S220, pulse generating unit carry out control of shutting off according to the pulse frequency of setting to reparation medical fluid.
Wherein, the second pressure medicament stream of accumulator output by pulse generating unit during being exported, pressure value
Be it is periodically variable, pulse generating unit be truncated continuous flow-connection continuous flow be a pulse period, specific work process
Are as follows:
When continuous medical fluid stream formation reparation medical fluid open circuit is truncated in pulse generating unit, pressure pump persistently increases to medical fluid is repaired
Medical fluid pressure increase in the connecting pipe of pressure, pressure control device and pulse generating unit, first pressure medicament stream flow into accumulation of energy
Device, air bag of the accumulator full of inert gas are compressed by first pressure medicament stream, carry out accumulation of energy, pressure to first pressure medicament stream
It increases, when pulse generating unit, which is connected to continuous medical fluid stream, forms reparation medical fluid access, pressure control device and pulse are sent out
Medical fluid pressure reduction in the connecting pipe of generating apparatus, accumulator discharge gathered pressure, that is, start to obtain after exporting accumulation of energy pressurization
The release process of the second pressure medicament stream arrived, second pressure medicament stream is the process of a pressure decline, when pulse generation fills
It sets and continuous medical fluid is truncated again is formed when repairing medical fluid open circuit, pulse generating unit stops conveying second pressure medicament stream, at this time
Accumulator starts the accumulation of energy of a new round, is repeated with this, realizes the first pressure for exporting pressure pump in this way
Medicament stream carries out being pressurized-discharge-pressurization-discharge circulation in accumulator, so that repairing medical fluid with periodically variable
Mode is conveyed out pulse generating unit.
Reparation medical fluid after control of shutting off is injected formation at target locations by S230, injection device, wherein pulse frequency is according to mesh
The permeability on mark stratum is configured.
Soil repair system in order to configure corresponding reparation medical fluid, in the embodiment of the present invention further include: repair medical fluid
Configuration device, correspondingly, soil remediation method provided in an embodiment of the present invention further include following step before carrying out pressure control
It is rapid:
According to soil environment investigation result, layouts method according to triangle, the target decanting point for repairing medical fluid is determined, to guarantee
Formation at target locations region can be completely covered in the dilation angle for repairing medical fluid.
Wherein, the selection of target decanting point is mainly in view of the pulse reparation medical fluid exported after excess pressure controls can
Cover polluted region.
It repairs medical fluid configuration device and the reparation medical fluid is configured according to the pollutant property and pollution range of formation at target locations.
Wherein, the pollutant property of formation at target locations includes pollutant type (heavy metal or organic pollutant；Single Pollution or
Combined pollution etc.), the distribution of pollutant.
The present embodiment carries out pressure control by the way that a pressure control device is arranged before pulse generating unit, to medical fluid is repaired
System, pulse generating unit, which opens and closes, to be exported so that repairing medical fluid according to the pressure range of setting, is formed pressure cycle and is become
Macrovoid isopreference channel caused by static pressure injection can be effectively avoided in the medicament stream of change, is uniformly injected into reparation medical fluid
Polluted area comes into full contact with pollutant, increases the pharmaceutical quantities that formation at target locations region is received, and reduces medicament waste, improves
By in situ chemical oxidation/reduction recovery technique to the remediation efficiency of the formation at target locations of pollution.
Embodiment three
Fig. 3 is a kind of structural schematic diagram for soil repair system that the embodiment of the present invention three provides, the soil repair system
Formation at target locations is injected for medical fluid will to be repaired in the way of impulses injection, so that it is complete by oxidation/reduction reaction to repair medical fluid
The reparation of pairs of Polluted area, as shown in figure 3, the repair system includes: pulse generating unit and injection device, wherein
Pulse generating unit is used to carry out control of shutting off according to the pulse frequency of setting to reparation medical fluid.
Injection device is for the reparation medical fluid injection formation at target locations after the control that will shut off.
Wherein, pulse frequency is configured according to the permeability of formation at target locations.Since in the case where pressure is certain, pulse
Frequency is higher, and generated pulse energy is lower, and repairs medical fluid after injecting stratum, will receive stratum geological conditions,
Hydrogeologic condition etc. influences, and formation at target locations is different, and permeability is just different, thus pulse frequency is needed according to formation at target locations
Permeability preset.Simultaneously, it is contemplated that the circulation duct of pulse generating unit and injection device and medical fluid has
The pressure tolerance of itself, thus in order to improve the service life of soil repair system, when carrying out the setting of pulse frequency,
It needs to calculate and controls the pressure of pulse frequency within the scope of system and the ability to bear of liquid medicine flow pipeline.
Pulse generating unit can be ground pulse generating unit or underground pulse generating unit, ground pulse generation dress
It is set to and shut off the device of control on ground in face of repairing medical fluid, underground pulse generating unit is to carry out in underground to medical fluid is repaired
Shut off the device of control.Underground pulse generating unit can will repair medical fluid and propagate in a pulsed fashion because energy loss is small
It is farther, it can expand repair medical fluid range of scatter.
As a kind of implementation, the pulse generating unit in the present embodiment can be realized using such as flowering structure:
Pulse generating unit includes variable-frequency motor and at least one valve, wherein
The control unit of the power output end connecting valve of variable-frequency motor, for control valve according to the work of variable-frequency motor
Frequency interval is opened.
Wherein, the working frequency of variable-frequency motor is the pulse frequency of pulse generating unit, thus with determining target
After layer, the permeability on combining target stratum is needed to adjust the working frequency of variable-frequency motor.Variable-frequency motor control valve is according to certainly
The working frequency of body carries out interval unlatching, valve opening, and repairing medical fluid can pass through, and valve is closed, and repairing medical fluid will be by
Truncation will be repaired medical fluid interval in the form of water conservancy pulse by this and be exported.
Valve can be single solenoid valve or ball valve, or combination valve, such as plunger valve and reversal valve combination
Deng either single valve or combination valve, on and off are all controlled by variable-frequency motor.
Injection device includes at least medicament conveying lever and medicament injection rod, and medicament conveying lever and medicament injection rod are hollow
Setting, wherein
One end of medicament conveying lever is connected with the output end of pulse generating unit, and the other end is connected with medicament injection rod；
The other end of medicament injection rod protrudes into formation at target locations, the side-wall hole setting of medicament injection rod, for that will repair medicine
Liquid injects formation at target locations.
Because medicament conveying lever can have attenuation to the pulse energy for repairing medical fluid, thus, pulse generating unit needs
It is reasonably selected according to the pollution range (including: area and depth) of formation at target locations, optionally, due to pipeline and strata pressure
Deng the influence to impulse wave, ground pulser, maximum injection depth is 30m, 0~2.0MPa of injection pressure, pulse frequency model
It encloses for 0.01~0.5Hz；When the buried depth of formation at target locations is more than 30m, underground pulse generating unit, injection pressure can be used
0~10.0MPa of power, pulses range are 0.01~0.5Hz, for example, can be by utilizing hydraulic oscillation in injection device
Device carries out concussion control, and transmission medicament generates waterpower pulse wave on the ground for excitation.Underground pulse generating unit can reduce pulse energy
The loss in medicament conveying lever is measured, propagates to farther region so as to which medical fluid will be repaired, so that repairing the diffusion of medical fluid
Range can cover Polluted area.
Medicament injection rod expands in such a way that the aperture that side wall opens up will repair medical fluid by pulse energy to formation at target locations
It dissipates, optionally, the open pore size of medicament injection rod side wall is 1~15mm, and tapping is between the upper and lower away from for 50~300mm.
Medicament injection rod can be vertical pipe/well, can also be angled with ground, and material uses metal material,
Can bend to become because of elasticity to avoid plastic material causes impulse wave to accelerate decaying.
The embodiment of the present invention reasonably selects ground pulse generating unit or underground pulse according to pollutant distribution condition
Generating device carries out control of shutting off for medical fluid is repaired by pulse generating unit at set time intervals, generates waterpower arteries and veins
Punching, so that formation at target locations is injected into a manner of pulse energy by medical fluid is repaired, in the case where not increasing other ancillary measures,
Can realize will repair medical fluid comes into full contact with pollutant, and reparation medical fluid is made to be diffused into farther region, realizes depthkeeping
The advantages of degree precisely injection, has structure simple, and work efficiency is high, on the one hand avoids using high density injection or high energy consumption band
The fringe cost come；Another aspect pulse energy can be to avoid because of injection pipeline blocking bring backman caused by returning slurry phenomenon
Journey, the work that the repair system of the present embodiment is lasted much longer further improve the working efficiency of system.
Example IV
Fig. 4 is a kind of structural schematic diagram for soil repair system that the embodiment of the present invention four provides, and the present embodiment is above-mentioned
It is optimized on the basis of embodiment, as shown in figure 4, the soil repair system includes sequentially connected: repairing medical fluid configuration
Device, pressure control device, pulse generating unit and injection device, wherein
Medical fluid configuration device is repaired, repairs medical fluid for configuring according to the pollution property of formation at target locations, and medical fluid will be repaired
It is delivered to pressure control device.
Pressure control device, for controlling the medicament stream repairing medical fluid formation pressure value and changing within the set range, and will
The medicament stream of the pressure change is delivered to pulse generating unit.
Pulse generating unit, for carrying out control of shutting off according to the pulse frequency of setting to the medicament stream received.
Injection device injects formation at target locations for the reparation medical fluid after the control that will shut off.
Wherein, the operating pressure of pressure control device, which can according to need, is adjusted, by adjusting pressure control device
Output pressure, can enable repair medical fluid range of scatter coverage goal stratum Polluted area.
Pressure control device at least needs to include pressure feeder, pressure controller and Auxiliary Control Element, wherein auxiliary
Help control unit that more easily the output pressure of pressure control device can be adjusted.
The soil repair system in the embodiment of the present invention is specifically introduced below with reference to a specific example, Fig. 5
For a kind of structural schematic diagram of pulsed soil repair system provided in this embodiment, as shown in figure 5,
Repairing medical fluid configuration device includes medicine storing pot 1 and blending tank 2, and medicine storing pot 1 will be to be configured by medicament delivery pump 5
Medicament is quickly delivered to blending tank 2 by medicament conveyance conduit 4 and is stirred mixing, so that required for medicament to be configured reaches
Dosages distribution.The input port of medicine storing pot 1 and delivery outlet are provided with valve 3, for flexibly controlling the input quantity of medicament and defeated
Output.The inlet and delivery outlet of blending tank 2 are also provided with valve 3, for flexibly controlling medicament inlet and configuration to be configured
The output quantity of good reparation medical fluid.The delivery outlet of blending tank 2 is connected with pressure pump 7.Blender 6 is additionally provided in blending tank 2,
For being stirred to the medicament to be configured of input, it is uniformly mixed medicament to be configured.
Pressure feeder is pressure pump 7, and pressure controller is accumulator 10, correspondingly, the structure of the pressure control device
It is as follows:
The pressure output end of pressure pump 7 is connected with the input terminal of accumulator 10, for carrying out pressurized treatment to reparation medical fluid,
Obtain first pressure medicament stream.
The output end of accumulator 10 is connected with the valve 3 of input terminal in pulse generating unit, for flowing into the first medicament
Row accumulation of energy obtains second pressure medicament stream, and second pressure medicament stream is exported in the way of pressure decline；Pulse generating unit
In variable-frequency motor 11 power output end connecting valve 3 control unit, for control valve according to the work of variable-frequency motor 11
It opens at working frequency interval.
Auxiliary Control Element includes pressure-control valve 8 and pressure gauge 9, wherein pressure-control valve 8 and the setting of pressure gauge 9 exist
On the connected loop of pressure pump 7 and accumulator 10, pressure pump 7 can be directly acquired by pressure gauge 9 and be applied to accumulator 10
Pressure value, then be adjusted by output pressure of the pressure-control valve 8 to pressure pump 7, the output of pressure pump 7 can be made to meet and wanted
The pressure asked is to accumulator 10.
In order to increase pulse energy, the closing speed of pulse generating unit is very fast, because closing speed is fast, in conveyance conduit
Medical fluid instantaneous velocity sharply change, cause medical fluid momentum to rapidly change, and make pressure significant changes, can generate that " water attack is existing
As ".It can be in order to avoid " water hammer " is to the leakproofness and safety effects of pulse generating unit and pipeline, before pulser
Accumulator 10 is set, the shock wave generated by compression accumulator air bag (being full of inert gas) storage " water hammer ", in turn
Protection system.Meanwhile in order to reduce energy consumption in pulse generating unit opening process, the opening speed of pulse generating unit is far below
Closing speed.Specifically, it can control the revolving speed of variable-frequency motor to realize, for example, in a cycle of valve opening, control
Revolving speed when variable-frequency motor is opened is slow, and revolving speed when closure is fast.
Injection device includes medicament conveying lever 12 and medicament injection rod 13, and medicament conveying lever 12 and medicament injection rod 13 are
Hollow setting, medicament conveying lever 12 pass through fill stratum 16 and upper layer water barrier 17 by injector well 14, will repair medical fluid and are delivered to
Medicament injection rod 13, wherein
One end of medicament conveying lever 12 is connected with the output end of pulse generating unit, the other end and 13 phase of medicament injection rod
Even；
The other end of medicament injection rod 13 protrudes into formation at target locations 15, and the side-wall hole setting of medicament injection rod 13 passes through side
The hole of wall will repair medical fluid and inject formation at target locations 15.
Optionally, the accumulator 10 in the present embodiment is gas storage accumulator, is stored with inert gas in the gas storage accumulator,
When the formation reparation medical fluid open circuit of medical fluid stream is truncated in pulse generating unit, inert gas is stored after the extruding by the first medicament stream
Can, the pressure in gas storage accumulator increases, and forms second pressure medicament stream.When pulse generating unit conducting medical fluid formation is repaired
When multiple medical fluid access, the compressed gas in gas storage accumulator expands rapidly, so that the second pressure medicament stream in gas storage accumulator
Compressed inert gas is flowed out from gas storage accumulator after squeezing, and flows into injection device by pulse generating unit.
The present embodiment carries out pressure by the way that a pressure control device is arranged before pulse generating unit, to medical fluid is repaired
It adjusts, wherein pressure pump carries out pressurized treatment to medical fluid is repaired, and when medical fluid stream forms reparation medical fluid open circuit, accumulator is to pressure pump
The reparation medical fluid of output carries out secondary booster again；When medical fluid stream forms reparation medical fluid access, accumulator is again by pressurized reparation
Medical fluid exports in the way of pressure decline, and medical fluid will be repaired by realizing exports in the way of Pressure behaviour variation, then passes through note
Entering device and is injected into formation at target locations, medical fluid will be repaired by, which realizing, is injected into formation at target locations in a manner of Pressure behaviour variation, thus
The problem of efficiently avoiding macrovoid isopreference channel caused by conventional static pressure injection, is equably infused so that repairing medical fluid
Enter Polluted area, improves through in situ chemical oxidation/reduction remediation efficiency.By being arranged in the front end of pressure control device
Blending tank can be sufficiently mixed the medicament to be configured from each medicine storing pot, obtain the reparation medicine for meeting ratio requirement
Liquid.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (10)
1. a kind of soil remediation method is applied to soil repair system, which is characterized in that the soil repair system includes pulse
Generating device and injection device, wherein the described method includes:
Pulse generating unit carries out control of shutting off according to the pulse frequency of setting to reparation medical fluid；
Reparation medical fluid after control of shutting off is injected formation at target locations by injection device, wherein the pulse frequency is according to formation at target locations
Permeability be configured.
2. the method according to claim 1, wherein the soil repair system further includes pressure control device；
Correspondingly, carry out according to the pulse frequency of setting shutting off before control in pulse generating unit to medical fluid is repaired, the side
Method further include:
Pressure control device controls the reparation medical fluid and forms the medicament stream that pressure value changes within the set range.
3. according to the method described in claim 2, it is characterized in that, the pressure control device includes pressure pump and accumulator；
Correspondingly, the pressure control device, which controls the reparation medical fluid, forms the medicament that pressure value changes within the set range
Stream, comprising:
Pressure pump carries out pressurized treatment to the reparation medical fluid, obtains first pressure medicament stream；
Accumulator carries out pressurized treatment to the first pressure medicament stream, obtains second pressure medicament stream, accumulator is according to pressure
The mode successively decreased exports the second pressure medicament stream.
4. the method according to claim 1, wherein the soil repair system further includes repairing medical fluid configuration dress
It sets；
Correspondingly, the method also includes:
It repairs medical fluid configuration device and the reparation medical fluid is configured according to the pollutant property and pollution range of formation at target locations.
5. a kind of soil repair system characterized by comprising pulse generating unit and injection device, wherein
The pulse generating unit is used to carry out control of shutting off according to the frequency of setting to reparation medical fluid；
The injection device is for the reparation medical fluid injection formation at target locations after the control that will shut off, wherein the frequency is according to target
The permeability on stratum is configured.
6. system according to claim 5, which is characterized in that the system also includes pressure control devices, in institute
It states pulse generating unit and shut off before control according to the frequency of setting to repairing medical fluid, control the reparations medical fluid and formed and pressed
The medicament stream that force value changes within the set range.
7. system according to claim 5, which is characterized in that the pulse generating unit includes variable-frequency motor and at least one
A valve, wherein
The power output end of the variable-frequency motor connects the control unit of the valve, for controlling the valve according to variable-frequency electric
The operating frequency separation of machine is opened；Wherein, the working frequency of the variable-frequency motor is set according to the permeability of formation at target locations
It sets.
8. system according to claim 6, which is characterized in that the pressure control device includes pressure pump and accumulator,
Wherein,
The pressure output end of the pressure pump is connected with the input terminal of the accumulator, for being pressurized to the reparation medical fluid
Processing, obtains first pressure medicament stream；
The output end of the accumulator is connected with the input terminal of the pulse generating unit, for the first pressure medicament stream
It is pressurized, obtains second pressure medicament stream, and export the second pressure medicament stream in the way of pressure decline；Wherein,
Inert gas is stored in the accumulator, the inert gas carries out accumulation of energy after the extruding by the first medicament stream.
9. system according to claim 6, which is characterized in that the pressure control device further includes pressure-control valve and pressure
Power table, wherein
The pressure output end of the pressure pump is arranged in the pressure-control valve, for adjusting the pressure output of the pressure pump；
The pressure gauge is arranged between the pressure-control valve and the accumulator, and the pressure for obtaining the pressure pump is defeated
It is worth out.
10. system according to claim 5, which is characterized in that the injection device includes at least medicament conveying lever and medicine
Agent injection rod, the medicament conveying lever and medicament injection rod are hollow setting, wherein
One end of the medicament conveying lever is connected with the output end of the pulse generating unit, the other end and the medicament injection rod
It is connected；
The other end of the medicament injection rod protrudes into the formation at target locations, and the side-wall hole setting of the medicament injection rod is used for
The reparation medical fluid is injected into the formation at target locations；
The system also includes repair medical fluid configuration device, the agent outlet for repairing medical fluid configuration device and the pressure control
The input terminal of device processed is connected, and the reparation medical fluid configuration device is used to configure the reparation according to the pollution property of formation at target locations
Medical fluid, and the reparation medical fluid is delivered to the pressure control device；
The reparation medical fluid configuration device is additionally provided with rabbling mechanism, by driving the rabbling mechanism to mix the reparation medical fluid
It closes uniform.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111545561A (en) * | 2019-12-11 | 2020-08-18 | 卞志强 | Auxiliary method for in-situ chemical remediation of soil |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001129526A (en) * | 1999-11-05 | 2001-05-15 | Ohbayashi Corp | Method for cleaning contaminated ground |
| WO2008037069A1 (en) * | 2006-09-25 | 2008-04-03 | Wavefront Reservoir Technologies Ltd. | Placement of fluids in ground by pulse-injection |
| WO2009137826A2 (en) * | 2008-05-09 | 2009-11-12 | Steven Panter | Mass/volume estimation contamination, removal and/or in situ treatment using subsurface pressure waves |
| CN203991656U (en) * | 2014-08-08 | 2014-12-10 | 北京建工环境修复股份有限公司 | A kind of organic polluted soil and underground water in-situ repairing device |
| CN104815844A (en) * | 2015-04-03 | 2015-08-05 | 北京建工环境修复股份有限公司 | Chromium contamination in-situ remediation method |
| CN105834208A (en) * | 2016-06-01 | 2016-08-10 | 上海岩土工程勘察设计研究院有限公司 | Movable in-situ fast injection device used for polluted site |
| CN105964678A (en) * | 2016-06-23 | 2016-09-28 | 北京建工环境修复股份有限公司 | Soil and groundwater in-situ remediation system and method through in-situ infusion and high-pressure jet grouting injection |
| CN108188171A (en) * | 2018-02-12 | 2018-06-22 | 内蒙古睿达鑫科技有限责任公司 | A kind of organic contamination place in-situ oxidation repair system and renovation technique |
| CN109926446A (en) * | 2019-04-04 | 2019-06-25 | 中国环境科学研究院 | Drug-injecting system in situ and method |
-
2019
- 2019-07-12 CN CN201910629150.1A patent/CN110227711B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001129526A (en) * | 1999-11-05 | 2001-05-15 | Ohbayashi Corp | Method for cleaning contaminated ground |
| WO2008037069A1 (en) * | 2006-09-25 | 2008-04-03 | Wavefront Reservoir Technologies Ltd. | Placement of fluids in ground by pulse-injection |
| WO2009137826A2 (en) * | 2008-05-09 | 2009-11-12 | Steven Panter | Mass/volume estimation contamination, removal and/or in situ treatment using subsurface pressure waves |
| CN203991656U (en) * | 2014-08-08 | 2014-12-10 | 北京建工环境修复股份有限公司 | A kind of organic polluted soil and underground water in-situ repairing device |
| CN104815844A (en) * | 2015-04-03 | 2015-08-05 | 北京建工环境修复股份有限公司 | Chromium contamination in-situ remediation method |
| CN105834208A (en) * | 2016-06-01 | 2016-08-10 | 上海岩土工程勘察设计研究院有限公司 | Movable in-situ fast injection device used for polluted site |
| CN105964678A (en) * | 2016-06-23 | 2016-09-28 | 北京建工环境修复股份有限公司 | Soil and groundwater in-situ remediation system and method through in-situ infusion and high-pressure jet grouting injection |
| CN108188171A (en) * | 2018-02-12 | 2018-06-22 | 内蒙古睿达鑫科技有限责任公司 | A kind of organic contamination place in-situ oxidation repair system and renovation technique |
| CN109926446A (en) * | 2019-04-04 | 2019-06-25 | 中国环境科学研究院 | Drug-injecting system in situ and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111545561A (en) * | 2019-12-11 | 2020-08-18 | 卞志强 | Auxiliary method for in-situ chemical remediation of soil |
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