CN108160701A - Suitable for the in-situ immobilization maintenance process of Polluted Soil shallow-layer stirring - Google Patents
Suitable for the in-situ immobilization maintenance process of Polluted Soil shallow-layer stirring Download PDFInfo
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- CN108160701A CN108160701A CN201810088815.8A CN201810088815A CN108160701A CN 108160701 A CN108160701 A CN 108160701A CN 201810088815 A CN201810088815 A CN 201810088815A CN 108160701 A CN108160701 A CN 108160701A
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- stirring
- polluted soil
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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 invention discloses a kind of in-situ immobilization maintenance processes suitable for the stirring of Polluted Soil shallow-layer, include the following steps：Construction area is divided into several reparation units；To repairing the Polluted Soil in unit solubilising is carried out using surfactant；Alkali-activator is sprayed in Polluted Soil while stirring so that the two mixing, make Polluted Soil pH value adjustment in reparation unit between 10 12 using the stirring injector head in shallow-layer stir in situ equipment；Medicament is repaired to be repaired to Polluted Soil using injector head injection oxidation while stirring in Polluted Soil is stirred；Each injection stirring work for repairing unit is sequentially completed, and is conserved；In curing period, alkali-activator is added into the soil body several times according to the PH monitoring data point in construction area, by the control of soil body pH value 11, completes to repair.It is an advantage of the invention that：Shallow-layer stir in situ equipment is by carrying out subregion to the pollution soil body in construction area, carrying out dosing stir in situ by different level, so as to ensure the uniformity being stirred.
Description
Technical field
The invention belongs to field of environment engineering technology, and in particular to a kind of in-situ immobilization suitable for the stirring of Polluted Soil shallow-layer
Maintenance process.
Background technology
With the industrialized fast development in China, soil environment is constantly endangered by various pollutions, meanwhile, contaminated soil
The demand of repairing and treating will be increasing.Original position can be divided into according to disposal site currently for the repairing and treating technology of pollution soil sample
It repairs and showering, based technique for in-situ remediation just becomes following recovery technique and select because of at low cost, the small, non-secondary pollution of energy consumption
Hot spot.In situ remediation technology injection has heat treatment, chemical oxidization method, multiphase extracting, bioanalysis etc., and chemical oxidation skill
Art is quick, cost is controllable, has been widely used in field engineering reparation.Based technique for in-situ remediation is divided into original position according to embodiment
Injection and stir in situ.
Stir in situ reparation carries out fixed point stirring frequently with engineering pile-forming equipment and injects oxidating chemicals.Such restorative procedure
It is usually used in deep layer stir in situ reparation, there are equipment flexibility ratio is poor, working efficiency is low, disposition if for shallow-layer Polluted Soil reparation
The problems such as period is long.Meanwhile the Engineering Projects of most of in situ chemical oxidations is mostly to add sodium hydroxide adjusting soil pH to reach
After 10~12, then convey sodium peroxydisulfate and carry out stir in situ.It is not complete that such adding of agent mode often results in sodium peroxydisulfate in the soil body
Full response causes the problems such as low to the removal rate of pollutant.
Invention content
It is stirred according to the deficiencies of the prior art described above, It is an object of the present invention to provide one kind is suitable for Polluted Soil shallow-layer
In-situ immobilization maintenance process, the in-situ immobilization maintenance process is dirty by the press-in of stirring injector head in shallow-layer stir in situ equipment
It contaminates in the soil body, carrying out injection stirring makes reparation medicament come into full contact with to achieve the purpose that reparation with the pollution soil body；And by repairing
Carry out pH value monitoring in the maintenance processes of the pollution soil body after multiple, by it is a small amount of it is multiple in a manner of supplement alkali-activator, so as to fulfill
Oxidation is repaired medicament and is reacted with the complete of organic pollution, improves the purpose of pollutants removal rate.
The object of the invention realization is completed by following technical scheme：
A kind of in-situ immobilization maintenance process suitable for the stirring of Polluted Soil shallow-layer, it is characterised in that the in-situ immobilization maintenance process
Include the following steps：（1）Construction area is divided into several in latticed reparation unit；（2）To in the reparation unit
Polluted Soil carries out solubilising using surfactant；（3）Using the stirring injector head in shallow-layer stir in situ equipment in Polluted Soil
Alkali-activator is sprayed in Stirring Polluted Soil so that the abundant mixing of the two, makes the Polluted Soil pH value in the reparation unit
It adjusts between 10-12；（4）Oxidation is sprayed using the stirring injector head in Stirring Polluted Soil in Polluted Soil to repair
Medicament is to repair Polluted Soil；（5）According to step（2）-（4）It is sequentially completed each injection Beater operator for repairing unit
Make, and conserved；（6）During maintenance, added several times into the soil body according to the PH monitoring data point in the construction area
Add alkali-activator, by the control of soil body pH value in 10.8-11.2, completion is repaired.
The step（2）In, the groove of 25-35cm depths is excavated, and irrigate in the trench in the reparation unit
Soil solubilising is oozed under surfactant, the surfactant is anionic and nonionic surfactant, and a concentration of 18-22g/L is added
Measure the 8%-15% that pharmacy quality is repaired for the oxidation.
In the step（3）、（4）In, the pollution soil body in the reparation unit is divided into upper and lower two layers, utilizes digging
Machine by upper strata pollution the soil body excavate, first to lower floor pollution the soil body carry out injection stirring, later again by the upper strata pollute the soil body into
Row backfill simultaneously carries out injection stirring to the upper strata pollution soil body.
The step（3）In, the alkali-activator is sodium hydroxide solution, and a concentration of 500g/L, dosage is institute
State the 8%-15% that pharmacy quality is repaired in oxidation.
The step（4）In, the oxidation repairs medicament as sodium peroxydisulfate solution, a concentration of 400g/L, and dosage is
The 1%-3% of Polluted Soil weight to be repaired.
The step（6）In, during maintenance, pH value monitoring is carried out to the soil body in the construction area, according to pH value
Monitoring data, carry out a small amount of of alkali-activator and repeatedly add, make the soil body pH value control 11；Wherein, the alkalinity swashs
Total dosage of hair agent repairs the 8%-15% of pharmacy quality for the oxidation, described repeatedly to refer to 2-3 times, described to refer on a small quantity often
Secondary dosage is the total dosage of the alkali-activator/add number.
The shallow-layer stir in situ equipment includes the car body with mechanical arm, and the front end of the mechanical arm is equipped with described stir
Injector head is mixed, the stirring injector head is connected through injection pipeline with injection storage pumping installations.
The mechanical arm include first mechanical arm, second mechanical arm and third mechanical arm, the one of the first mechanical arm
End is fixed on the car body, the other end is rotatablely connected with the second mechanical arm, and the second mechanical arm is connected through a front end
Part is coaxially disposed with the third mechanical arm；First hydraulic telescopic rod is installed for driving described the in the first mechanical arm
Two mechanical arms are rotated；Be equipped in the second mechanical arm the second hydraulic telescopic rod for drive the front end connector and
The third mechanical arm stretches；The injection pipeline is included along the first mechanical arm, the second mechanical arm and front end
The flexible conduit of connector arrangement and the injection tube chamber in the third mechanical arm, the flexible conduit and the injection
Tube chamber is connected.
The medicament ejector head and be divided on the outside of the medicament ejector head that the stirring injector head is located at center by one
Native cutterhead composition is cut in three groups of rotary tillages, and the setting Y-shaped in the plane of native cutterhead, the medicament ejector head are cut in rotary tillage described in three groups
It is connected with the injection pipe ends；Native cutterhead is cut in the rotary tillage that the injection direction of the medicament ejector head is outwardly directed.
The injection storage pumping installations includes two medicament warehouses, and each medicament warehouse is connected separately with a note
Pencil road；Be disposed at the link position of the medicament warehouse and the injection pipeline high-pressure pump, injecting gage probe,
Pressure controller and flow control valve.
It is an advantage of the invention that：（1）Shallow-layer stir in situ equipment to the pollution soil body in construction area by carrying out subregion
Domain carries out dosing stir in situ by different level, so as to ensure the uniformity being stirred；（2）Simultaneously by maintenance processes
According to pH value monitoring result by alkali-activator by it is a small amount of it is multiple in a manner of be added in the soil body, ensure that medicament is repaired in oxidation
Fully reaction improves the removal efficiency of pollutant；（3）Shallow-layer stir in situ equipment, it is simple in structure, it can realize a variety of reparation medicines
The addition of agent, and medicament ejector head built in native cutterhead is cut in the rotary tillage of Y-shaped distribution, helps to stir injector head cutting stirring soil
Body smoothly sinks, and improves suitability of the equipment in different site conditions, the particularly applicability in the thicker place of miscellaneous fill.
Description of the drawings
Fig. 1 is the structure diagram of middle-shallow layer stir in situ equipment of the present invention；
Fig. 2 is the front view of middle-shallow layer stir in situ equipment of the present invention；
Fig. 3 is the structure diagram that native cutterhead is cut in rotary tillage in the present invention；
Fig. 4 is the structure diagram that the Y-shaped distribution of native cutterhead is cut in three groups of rotary tillages in the present invention；
Fig. 5 is the division floor map for respectively repairing unit in the present invention in construction area；
Fig. 6 is the construction procedure schematic diagram of in-situ immobilization maintenance process in the present invention.
Specific embodiment
The feature of the present invention and other correlated characteristics are described in further detail by embodiment below in conjunction with attached drawing, with
Convenient for the understanding of technical staff of the same trade：
Such as Fig. 1-6, label 1-6 is respectively in figure：
Car body 1, crawler type traveling pedestal 11, vehicle frame 12, power plant 13, first mechanical arm 14, the first hydraulic telescopic rod 15,
Two mechanical arms 16, the second hydraulic telescopic rod 17, front end connector 18, third mechanical arm 19；Injection storage pumping installations 2, medicament
Warehouse 21, medicament warehouse 22, crawler type traveling pedestal 23, injecting gage probe 24, flow control valve 25, pressure controller
26th, high-pressure pump 27；Injection pipeline 3, flexible conduit 31, injection tube chamber 32；Stirring injector head 4, rotary tillage cut native cutterhead 41, medicament spray
Penetrate first 42, medicament heating unit 43, pressue device 44, rotating device 45, cutterhead 46, cutting tip 47, fastening bolt 48；Construction
Region 5, medicine-pouring pipe assign a little 51, monitoring point 52, repair unit 53, the upper strata pollution soil body 54, lower floor's pollution soil body 55；Digging machine 6.
Embodiment：As shown in figures 1 to 6, the present embodiment is more particularly to a kind of in-situ immobilization suitable for the stirring of Polluted Soil shallow-layer
Maintenance process specifically includes following steps：
（1）Before stirring in situ, clear table is carried out to the construction area 5 in place, while loose to topsoil progress using digging machine 6,
Sink to creating suitable soil condition for shallow-layer stir in situ equipment.
（2）As shown in figure 5, will be divided into the range of construction area 5 several is in latticed reparation unit 53, in this reality
It applies in example, each specification for repairing unit 53 is 4m * 4m.
（3）Excavate in the reparation unit 53 to be onstructed and surfactant irrigated after the groove of 30cm depths, and under ooze soil
Solubilising is carried out, surfactant herein is specifically using the anionic and nonionic surfactant of a concentration of 20g/L, surface-active
The dosage that medicament is repaired in the oxidation used according to after of the dosage of agent is determined, in the present embodiment, surfactant
Add measure oxidation repair dosing 10%（Mass percent）；In solubilising after a certain period of time, as shown in figure 5, will repair
The pollution soil body in unit 53 is divided into two layers up and down, i.e. the upper strata pollution soil body 54 and lower floor's pollution soil body 55, upper strata pollution
The usual thickness selected as 0.5-1.0m of the soil body 54 or lower floor's pollution soil body 55；It is excavated using digging machine 6 and removes upper strata Polluted Soil
Body 54.
（4）The shallow-layer stir in situ equipment that installation is complete is moved at 53 position of reparation unit to be onstructed later；This
Shallow-layer stir in situ equipment body in embodiment is the car body 1 with mechanical arm, and stirring is equipped in the front end of mechanical arm
Injector head 4 is disposed with injection pipeline 3, the one end connection injection storage pumping installations of injection pipeline 3 along mechanical arm extending direction
2 repair medicament for pumping, and the other end connection stirring injector head 4 of injection pipeline 3, stirring injector head 4 can be in its press-in
The pollution soil body be stirred during outward injection repair medicament so that repair medicament and contaminated soil can come into full contact with
Repair Polluted Soil.
As shown in Figure 1, 2, car body 1 is by crawler type traveling pedestal 11, vehicle frame 12, mechanical arm and power plant 13 this four
Divide and formed, wherein：（a）Crawler type traveling pedestal 11 for entire car body 1 to be driven to move traveling, convenient for different landform with
And walk in environment, so as to improve working efficiency；（b）Connected between vehicle frame 12 and crawler type traveling pedestal 11 by rotating mechanism
It connects, under the driving of rotating mechanism, vehicle frame 12 can carry out 360 ° of rotation；（c）Mechanical arm specifically include first mechanical arm 14,
Second mechanical arm 16 and third mechanical arm 19, one end of first mechanical arm 14 is hingedly fixed on vehicle frame 12, the other end and
Two mechanical arms 16 are rotatablely connected, and second mechanical arm 16 is then formed through front end connector 18 and third mechanical arm 19 and is coaxially disposed；
First hydraulic telescopic rod 15 is installed in first mechanical arm 14 for second mechanical arm 16 to be driven to be rotated, in addition, the
Second hydraulic telescopic rod 17 is installed for front end connector 18 and third mechanical arm 19 to be driven to stretch on two mechanical arms 16
Movement；（d）Power plant 13 is mounted on vehicle frame 12, for the mechanical energy of diesel engine to be converted into hydraulic energy and is supplied to
Each component on car body 1, including under crawler type traveling pedestal 11, vehicle frame 12 rotating mechanism, the first hydraulic telescopic rod 15, second
Hydraulic telescopic rod 17 and stirring injector head 4.
As shown in Figure 1, 2, injection storage pumping installations 2 includes crawler type traveling pedestal 23 and is arranged on crawler type traveling
Medicament warehouse 21 and medicament warehouse 22 on pedestal 23；Wherein, medicament warehouse 21 and medicament warehouse 22 are connected by injection pipeline 3
It medicament and is pumped outward, shape in different types of reparation on car body 1, can be stored in medicament warehouse 21 and medicament warehouse 22
It can be cylindrical or be rectangle, the size of volume is determined according to engineering practice；Each medicament warehouse corresponds to respectively
An injection pipeline 3 is connected with, at interface position of the injection pipeline 3 with 21/ medicament warehouse 22 of medicament warehouse, is sequentially installed with note
Agent gage probe 24, flow control valve 25, high-pressure pump 27, pressure controller 26, among this, injecting gage probe 24 is used
In detecting and controlling the medicament flow that exports outward, high-pressure pump 27 is used to extract the medicament in 21/ medicament warehouse 22 of medicament warehouse
Solution simultaneously pumps outward, and certain injection pressure is provided for medicament, and flow control valve 25 and pressure controller 26 are then adjusted
The transmission speed of medicament.
As shown in Figure 1, 2, injection pipeline 3 is made of flexible conduit 31, injection tube chamber 32, wherein, flexible conduit 31 uses
Corrosion resistant hose materials are simultaneously arranged along the extension direction of first mechanical arm 14 and second mechanical arm 16, to make flexible conduit 31
It can rotate with first mechanical arm 14 and second mechanical arm 16, length is selected with certain redundancy；And injection tube chamber
32 axial directions along third mechanical arm 19 open up, the one end connection injection storage pumping installations 2 of flexible conduit 31, the other end
Then it is connected with injection tube chamber 32, there is medicament warehouse 21 and medicament warehouse by the storage pumping installations 2 of injection in this present embodiment
22, therefore the quantity of flexible conduit 31 is two, the flexible conduit 31 connected on each medicament warehouse, which crosses, collaborates to medicine-pouring pipe
In chamber 32, the reparation medicament that injection is stored in pumping installations 2 is delivered in injection tube chamber 32 and through its end by flexible conduit 31
Stirring injector head 4 outward spray.
As shown in Figure 1,2,3, 4, stirring injector head 4 is arranged on the front end of third mechanical arm 19, by the medicine for being located at center
Agent injector head 42 and three groups of rotary tillages on the outside of it are cut native cutterhead 41 and are formed, and three groups of rotary tillages cut native cutterhead 41 in the plane
Y-shaped distribution；Wherein, it is connected positioned at the medicament ejector head 42 at center with the injection tube chamber 32 in third mechanical arm 19,
Junction is provided with medicament heating unit 43 and pressue device 44, and medicament heating unit 43 can be before medicament injects the soil body
Medicament implantation temperature is improved to improve reaction efficiency；The cleaning agent jet flow direction of medicament ejector head 42 is respectively directed to be located on the outside of it
Native 41 direction of cutterhead is cut in three groups of rotary tillages；As shown in figure 3, the rotary tillage in the present embodiment cut native cutterhead 41 include cutterhead 46 and along its
Several cutting tips 47 that outer edge is spaced apart, cutting tip 47 are fixed on through fastening bolt 48 on cutterhead 46, cutterhead 46
Rotation driving is completed by rotating device 45.During the native cutting of the cutterhead 41 stirring soil body is cut in rotary tillage, medicament ejector head 42 will
Injection can be synchronized and repair medicament, so as to which reparation medicament be enable to be sufficiently mixed with Polluted Soil body.
（5）As shown in Figure 1,5, shallow-layer stir in situ equipment is being moved to at 53 position of reparation unit to be onstructed it
Afterwards, second mechanical arm 16, third mechanical arm 19 and stirring injector head 4 thereon is made to keep vertically perpendicular to the state on ground.
（6）According in construction area 5 pollutant type, pollution level configuration oxidation repair medicament and alkali-activator,
And it is separately added into the medicament warehouse 21 and medicament warehouse 22 in above-mentioned shallow-layer stir in situ equipment；Wherein, medicament is repaired in oxidation
Using sodium peroxydisulfate solution（A concentration of 400g/L）, dosage is the 1%-3% of soil quality to be repaired；Alkali-activator is adopted
It is sodium hydroxide solution（A concentration of 500g/L), design quantity takes oxidation to repair the 20% of liquid medicine dosage（Quality hundred
Divide ratio）.
（7）As shown in figures 1 to 6, the second hydraulic telescopic rod 17 driving third mechanical arm 19 in second mechanical arm 16 is controlled to stretch
It is long, so as to which stirring injector head 4 be driven to be pressed into Stirring in lower floor's pollution soil body 55, during press-in, stirring injection
First 4 spray sodium hydroxide solution outward with certain pressure simultaneously carries out alkaline adjusting to lower floor's pollution soil body 55；In addition, stirring
Mix injector head 4 gradually above carry during, sodium hydroxide solution is made fully to be connect with soil by the rotation for stirring 4 high speed of injector head
It touches, realizes sufficient mixing；It repeats stirring to sink, is promoted, stirred evenly while stirring, until completing the reparation unit 53 of 16 ㎡
Working area；Sampling and testing repairs the pH value of lower floor's pollution soil body 55 in unit 53, reaches the pH value of 10-12；Needle
To entirely repairing in unit 53（The soil body 54 and lower floor's pollution soil body 55 are polluted including upper strata）Sodium hydroxide solution throwing for the first time
Dosage should be the half of sodium hydroxide solution design quantity, i.e., is repaiied for the first time to the pollution soil body entirely repaired in unit 53
When multiple, the dosage of sodium hydroxide solution accounts for the 10% of sodium peroxydisulfate solution usage；
During medicament ejector, high-pressure pump 27 extracts sodium hydroxide solution out from medicament warehouse 22, is pumped through injection pipeline 3
It send to the medicament ejector head 42 of stirring injector head 4, under pressure, liquid medicine is at medicament ejector head 42 with certain
In pressure injection to the soil body, alkaline adjusting is carried out to the soil body；During medicament is conveyed, injecting gage probe is adjusted in real time
24 to control the injection rate of sodium hydroxide solution, while by adjusting flow control valve 25 and pressure controller 26 so as to control
The transmission speed of medicament.
（8）As shown in figures 1 to 6, the injection pipeline 3 of sodium hydroxide solution is closed, opens the injection pipeline of sodium peroxydisulfate solution
3；Repeat step（7）In lower floor from step to the reparation unit 53 pollution the soil body 55 in inject sodium peroxydisulfate solution, and profit
It is uniformly mixed with the soil body with stirring injector head 4, with the contaminated soil body chemical reaction, which occurs, for sodium peroxydisulfate solution carries out it
Repair
（9）As shown in fig. 6, after the reparation of lower floor's pollution soil body 55 in the reparation unit 53 to be done, using digging machine 6 to repairing
The pollution soil body 54 in backfill upper strata in multiple unit 53, the thickness of the upper strata pollution soil body 54 is 1.5m, is repeated the above steps（7）、（8）,
The reparation of the upper strata pollution soil body 54 is completed, that is, completes the entire repair for repairing unit 53.
（10）After the reparation to be done for repairing unit 53, close high-pressure pump 27 and stop pumping medicament into injection pipeline 3；
The second hydraulic telescopic rod 17 in second mechanical arm 16 is controlled to shrink to drive third mechanical arm 19 and stirring thereon later
The 4 lift-off soil body of injector head.
（11）As shown in figures 1 to 6, according to step（7）-（10）, and so on, it is sequentially completed each injection for repairing unit 53
Work is stirred, the Polluted Soil after the completion of stirring is conserved in situ.
（12）The test of the real-time monitoring, for the first time pH value of pH value is carried out in maintenance processes to the soil body in each reparation unit 53
Polluted Soil dosing stirring after 24H after carry out, PH monitoring points 52 according to as shown in Figure 5 lay, surface layer, 1m,
The test that soil sampling carries out pH value is distinguished at 2m... pollution depths.
（13）Monitoring data are obtained according to pH value, " a small amount of multiple " addition sodium hydroxide solution are carried out, in each reparation unit 53
Interpolation medicine-pouring pipe carry out injection, medicine-pouring pipe, which is assigned, a little 51 according to as shown in Figure 5 lay, it is ensured that sodium peroxydisulfate solution with
In the reaction process of pollutant, each pH value for repairing the pollution soil body in unit 53 can be controlled 11；Herein be repeatedly value
Addition number is advisable with 2-3 time, refers to remaining design quantity/add number of each dosage for sodium hydroxide on a small quantity.
（14）After maintenance expires, it is in situ to carry out secondary dosing to the reparation unit 53 for not up to repairing target for sampling and testing
It stirs again, until after soil environment quality is up to standard in the range of Polluted area, reparation terminates.
Claims (10)
- A kind of 1. in-situ immobilization maintenance process suitable for the stirring of Polluted Soil shallow-layer, it is characterised in that the in-situ immobilization maintenance side Method includes the following steps：（1）Construction area is divided into several in latticed reparation unit；（2）To in the reparation unit Polluted Soil using surfactant carry out solubilising；（3）Using the stirring injector head in shallow-layer stir in situ equipment in Polluted Soil It is middle to spray alkali-activator in Stirring Polluted Soil so that the abundant mixing of the two, makes the Polluted Soil PH in the reparation unit Value is adjusted between 10-12；（4）Oxidation is sprayed using the stirring injector head in Stirring Polluted Soil in Polluted Soil to repair Medicament is answered to be repaired to Polluted Soil；（5）According to step（2）-（4）It is sequentially completed each injection Beater operator for repairing unit Make, and conserved；（6）During maintenance, added several times into the soil body according to the PH monitoring data point in the construction area Add alkali-activator, by the control of soil body pH value in 10.8-11.2, completion is repaired.
- 2. a kind of in-situ immobilization maintenance process suitable for the stirring of Polluted Soil shallow-layer according to claim 1, feature exist In the step（2）In, the groove of 25-35cm depths is excavated in the reparation unit, and irrigate surface in the trench and live Property agent under ooze soil solubilising, the surfactant be anionic and nonionic surfactant, a concentration of 18-22g/L, dosage is institute State the 8%-15% that pharmacy quality is repaired in oxidation.
- 3. a kind of in-situ immobilization maintenance process suitable for the stirring of Polluted Soil shallow-layer according to claim 1, feature exist In in the step（3）、（4）In, the pollution soil body in the reparation unit is divided into upper and lower two layers, it will be upper using digging machine The layer pollution soil body is excavated, and first carries out injection stirring to lower floor's pollution soil body, later again backfills the upper strata pollution soil body And injection stirring is carried out to the upper strata pollution soil body.
- 4. a kind of in-situ immobilization maintenance process suitable for the stirring of Polluted Soil shallow-layer according to claim 1, feature exist In the step（3）In, the alkali-activator is sodium hydroxide solution, and a concentration of 500g/L, dosage is the oxidation Repair the 8%-15% of pharmacy quality.
- 5. a kind of in-situ immobilization maintenance process suitable for the stirring of Polluted Soil shallow-layer according to claim 1, feature exist In the step（4）In, it is sodium peroxydisulfate solution that medicament is repaired in the oxidation, and a concentration of 400g/L, dosage is to be repaired The 1%-3% of Polluted Soil weight.
- 6. a kind of in-situ immobilization maintenance process suitable for the stirring of Polluted Soil shallow-layer according to claim 1, feature exist In the step（6）In, during maintenance, pH value monitoring is carried out to the soil body in the construction area, according to the monitoring of pH value Data carry out a small amount of of alkali-activator and repeatedly add, and the pH value of the soil body is made to control 11；Wherein, the alkali-activator Total dosage repairs the 8%-15% of pharmacy quality for the oxidation, described repeatedly to refer to 2-3 times, described to refer to add every time on a small quantity It measures as the total dosage of the alkali-activator/add number.
- 7. a kind of in-situ immobilization maintenance process suitable for the stirring of Polluted Soil shallow-layer according to claim 1, feature exist Include the car body with mechanical arm in the shallow-layer stir in situ equipment, the front end of the mechanical arm is equipped with the stirring injection Head, the stirring injector head are connected through injection pipeline with injection storage pumping installations.
- 8. a kind of in-situ immobilization maintenance process suitable for the stirring of Polluted Soil shallow-layer according to claim 7, feature exist Include first mechanical arm, second mechanical arm and third mechanical arm in the mechanical arm, one end of the first mechanical arm is fixed In on the car body, the other end and the second mechanical arm be rotatablely connected, the second mechanical arm is through a front end connector and institute State the coaxial arrangement of third mechanical arm；First hydraulic telescopic rod is installed for driving second machinery in the first mechanical arm Arm is rotated；Second hydraulic telescopic rod is installed for driving the front end connector and described the in the second mechanical arm Three-mechanical arm stretches；The injection pipeline is included along the first mechanical arm, the second mechanical arm and front end connector The flexible conduit of arrangement and the injection tube chamber in the third mechanical arm, the flexible conduit and the injection tube chamber phase Connection.
- 9. a kind of in-situ immobilization maintenance process suitable for the stirring of Polluted Soil shallow-layer according to claim 7, feature exist The medicament ejector head that injector head is located at center by one and three groups of rotations being divided on the outside of the medicament ejector head are stirred in described Plough and cut native cutterhead composition, the setting Y-shaped in the plane of native cutterhead is cut in rotary tillage described in three groups, the medicament ejector head with it is described Injection pipe ends connect；Native cutterhead is cut in the rotary tillage that the injection direction of the medicament ejector head is outwardly directed.
- 10. a kind of in-situ immobilization maintenance process suitable for the stirring of Polluted Soil shallow-layer according to claim 7, feature exist Include two medicament warehouses in injection storage pumping installations, each medicament warehouse is connected separately with a medicine-pouring pipe Road；High-pressure pump, injecting gage probe, pressure are disposed at the medicament warehouse and the link position of the injection pipeline Controller and flow control valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810088815.8A CN108160701A (en) | 2018-04-10 | 2018-04-10 | Suitable for the in-situ immobilization maintenance process of Polluted Soil shallow-layer stirring |
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| CN201810088815.8A CN108160701A (en) | 2018-04-10 | 2018-04-10 | Suitable for the in-situ immobilization maintenance process of Polluted Soil shallow-layer stirring |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109174954A (en) * | 2018-08-07 | 2019-01-11 | 广西博世科环保科技股份有限公司 | Broken stirring dosing integration soil in-situ prosthetic appliance |
| CN115677146A (en) * | 2022-09-22 | 2023-02-03 | 长江生态环保集团有限公司 | Injection type device and method for repairing and treating polluted bottom mud of rivers and lakes |
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