CN206550129U - A kind of soil and underground water solid phase shallow-layer stirs in situ chemical oxidation repair system - Google Patents
A kind of soil and underground water solid phase shallow-layer stirs in situ chemical oxidation repair system Download PDFInfo
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- CN206550129U CN206550129U CN201720194887.1U CN201720194887U CN206550129U CN 206550129 U CN206550129 U CN 206550129U CN 201720194887 U CN201720194887 U CN 201720194887U CN 206550129 U CN206550129 U CN 206550129U
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Abstract
The utility model provides a kind of soil and underground water solid phase shallow-layer stirring in situ chemical oxidation repair system, belongs to soil and groundwater remediation systems technology field.Solid phase adding of agent unit described in the utility model includes fork truck, a digging machine and powder charge scraper bowl, and powder charge scraper bowl is arranged on the supporting arm front end of a digging machine；The shallow-layer agitating unit includes No. two digging machines, external digging machine connecting rod and swinging stirring-head, and one end of the external digging machine connecting rod is connected with the supporting arm front end of No. two digging machines, and the other end of external digging machine connecting rod is connected with swinging stirring-head.The utility model is applied to the reparation of shallow-layer saturated soil and severe Organic Contamination of Groundwater, solves in the clay-bearing formation reparation of shallow-layer zone of saturation, medicament mixes the problem of difficulty is big with soil and underground water.
Description
Technical field
The utility model is related to a kind of soil and underground water solid phase shallow-layer stirring in situ chemical oxidation repair system, belongs to soil
Earth and groundwater remediation systems technology field.
Background technology
The heavy metal of soil and underground water, organic contamination are typical two big type pollutions at present.Shallow-layer contaminated soil and
Underground water individually and combined pollution due to route of exposure it is many, the generally existing in contaminated site.In-situ immobilization is with respect to showering
Technology has non-secondary pollution, is not take up the clear superiority in extra place.Soil and groundwater remediation technology mainly using physics,
Chemistry and biotechnology, wherein chemical or biological prosthetic engineering technology is exactly to repair how medicament uniformly adds the problem of primarily solution
Enter underground environment.Shallow-layer contaminated soil and underground water feature be soil property based on miscellaneous fill, pollutant distribution is extremely uneven, especially
Part is extremely difficult to preferable repairing effect in the case of containing clay soil layer using injection technique, therefore, is not suitable for using note
Penetrate and deep mixing technique, shallow-layer mixing plant system just seem in the urgent need to.
Existing reparation medicament original position, which is added, mainly two ways：Stirring and injection/injection, its situ injection/note
Penetrate and be divided into：Direct press type high-pressure injection, shaft building injection, deep mixing technique, soil and underground water high-pressure rotary-spray recovery technique and
Other exploration on grouting technolgy etc..Prior art can not individually solve the problems, such as thin solum and underground water in-situ immobilization.
In situ chemical oxidation (In Situ Chemical Oxidation, ISCO) technology has to handle simultaneously and a variety of had
Organic pollutants, the higher advantage for the treatment of effeciency, meanwhile, the typically not contaminated thing concentration limitation of chemical oxidation.Influence in-situ chemical
The factor of oxidation technology includes：Diffusion, oxidant classification, oxidant dosage, pollution of the oxidant in soil and underground water
Species type and concentration etc..The newest survey data of Environmental Protection Agency shows that chemical oxidation techniques have been successfully applied to number
In the reparation of thousand contaminated sites, site remediation case in recent years, ISCO technologies account for 33%, and have it is increasingly increased become
Gesture, recovery technique is dominated as the current most rapid soil/underground water of development.
(application publication number is CN104624629A, Shen to the patent of invention that Chinese Patent Application No. is 201410831123.X
Please date of publication be on 05 20th, 2015) " a kind of method in the repairing organic polluted place of use two-way stirring injection method ", carry
Deep-layer stirring technique has been arrived, has been adapted to repair deep layer pollution, it is necessary to which pile foundation machinery is as Mixing Machine, assembling is relative complex, uncomfortable
The reparation of thin solum and underground water should be handled.
Above recovery technique application process needs a series of in-situ remediation system, realizes and repairs adding for medicament.
Utility model content
The purpose of this utility model be in order to the stirring depth for solving existing in-situ remediation system is excessive, injector well or high pressure
The problem of injection is difficult to ensure that shallow-layer mixed effect.And then a kind of soil and underground water solid phase shallow-layer stirring in-situ chemical oxygen are provided
Change repair system.
The purpose of this utility model is achieved through the following technical solutions：
A kind of soil and underground water solid phase shallow-layer stirs in situ chemical oxidation repair system, including：Solid phase adding of agent list
Member and shallow-layer agitating unit, the solid phase adding of agent unit include fork truck, a digging machine and powder charge scraper bowl, and powder charge scraper bowl is installed
In the supporting arm front end of a digging machine；The shallow-layer agitating unit includes No. two digging machines, external digging machine connecting rod and swinging stirring
Head, one end of the external digging machine connecting rod is connected with the supporting arm front end of No. two digging machines, the other end of external digging machine connecting rod
It is connected with swinging stirring-head.
The beneficial effects of the utility model are：
First, prosthetic appliance simple system, quick for installation, stirring-head is reasonable in design, is superior to other such as In Situ Heating, pyrolysis
The technology such as suction or Soil leaching needs somewhat complex design or tail gas or treatment unit for waste water etc..Rehabilitation cost far below In Situ Heating,
The technologies such as thermal desorption.The remediation efficiency of system in situ and the removal effect of pollutant can be optimally reached.
2nd, swinging shallow-layer mixing plant is operated
It can be answered after a digging machine addition solid chemicals are stirred one time using swinging stirring-head of the present utility model
Stir, can effectively solve drum-type strong stirring head and easily occur wrapping the problem of dead drill slipping is live, contribute to whipping process to beat
Dissipate clay gel caking, it is ensured that being sufficiently mixed for medicament and pollution medium is repaired, so as to ensure reaction condition.Solid chemicals are straight simultaneously
Connected digging machine addition, it is to avoid because drill bit pipeline blockage triggers the hidden danger of security incident.
3rd, relative to deep-layer stirring, such as hot-air stripping deep-layer stirring, high-pressure injection technology, such as Geoprobe drill bits note
Penetrate, high-pressure rotary-spray injects the deep agitation driller equipment, it is necessary to large-scale, installation and debugging are relatively cumbersome, and equipment energy consumption is high.This reality
With the mixing plant of new use digging machine+specialty stirring-head, it can directly add solid chemicals and directly be stirred, adding of agent ratio
It is high, it is possible to resolve the shallow-layer serious pollution problem of soil and underground water.
Brief description of the drawings
Fig. 1 is the operation principle that the utility model soil and underground water solid phase shallow-layer stir in situ chemical oxidation repair system
Schematic diagram.
Fig. 2 is the structural representation of swinging stirring-head.
Fig. 3 is the side view of swinging stirring-head.
Fig. 4 is the front view of swinging stirring-head
Reference in figure, 1 is fork truck, and 2 be packed medicament, and 3 be that medicament is dismounted into powder charge scraper bowl, and 4 be a digging machine,
5 be powder charge scraper bowl, and 6 be that powdery K medicaments are added, and 7 add for powdery E medicaments, and 8 is crush soil stirring operating area, and 9 be to stir
Direction is mixed, 11 be the external digging machine connecting rod of No. two digging machines, and 12 be that unbroken soil stirs operating area, and 13 be No. two digging machines, 14
It is silty clay (pollution layer) for miscellaneous fill (pollution layer), 15,16 be Extra-fine sand (uncontamination layer), and 17 be swinging stirring-head,
18 be that contaminated soil and underground water are mixed with medicament, and 19 be phreatic line, and 21 be connecting rod, and 22 be main body steel construction, and 23 are
Drive sprocket, 24 be hydraulic motor, and 25 be tensioning wheel, and 26 be tooth harrow, and 27 be chain, and 28 be wear-resisting steel disc cutting head, and 29 be quilt
Movable sprocket, 30 be swinging stirring-head stir in situ operation when cutting gyratory directions.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing：The present embodiment is with the utility model skill
It is lower premised on art scheme to be implemented, give detailed embodiment, but protection domain of the present utility model be not limited to it is following
Embodiment.
As shown in Figure 1 to 4, involved by the present embodiment a kind of soil and underground water solid phase shallow-layer stirring in-situ chemical oxygen
Change repair system, including：Solid phase adding of agent unit and shallow-layer agitating unit, the solid phase adding of agent unit include fork truck 1,
A number digging machine 4 and powder charge scraper bowl 5, powder charge scraper bowl 5 are arranged on the supporting arm front end of a digging machine 4；The shallow-layer agitating unit includes
No. two digging machines 13, external digging machine connecting rod 11 and swinging stirring-head 17, one end of the external digging machine connecting rod 11 with No. two
The supporting arm front end of digging machine 13 is connected, and the other end of external digging machine connecting rod 11 is connected with swinging stirring-head 17.
The swinging stirring-head 17 includes：Connecting rod 21, main body steel construction 22, drive sprocket 23, hydraulic motor 24,
Bearing up pulley 25, tooth harrow 26, chain 27, wear-resisting steel disc cutting head 28 and by movable sprocket 29, the top of the main body steel construction 22 is fixed
There is connecting rod 21, the upper end of main body steel construction 22 is provided with drive sprocket 23, and the lower end of main body steel construction 22 is provided with passive chain
Wheel 29, drive sprocket 23 and is connected between movable sprocket 29 by chain 27, is evenly equipped with chain 27 on tooth harrow 26, tooth harrow 26
Wear-resisting steel disc cutting head 28 is fixed with, hydraulic motor 24 is fixed on the top of main body steel construction 22, the output end of hydraulic motor 24
It is connected with drive sprocket 23, main body steel construction 22 is provided with tensioning wheel 25, tensioning wheel 25 is rotated with chain 27 and is connected, and is connected
Bar 21 is used to be connected with external digging machine connecting rod 11.
The connecting rod 21 is directly connected to the external digging machine connecting rod 11 of No. two digging machines by hinge pin.
6~12 groups of tooth harrows 26 are evenly equipped with the chain 27.
4~6 wear-resisting steel disc cutting heads 28 are installed on every group of tooth harrow 26.
Using the repair system of the present embodiment, solid phase shallow-layer is implemented to soil and underground water and stirs in situ chemical oxidation reparation
The detailed process of method comprises the following steps：
Step one：Levelling of the land, subregion and surveying setting-out
Soil and underground water plot carry out levelling of the land first, determine by 5m × 5m grids surveying setting-out after subregion that becomes more meticulous
Position, each stirring subregion number consecutively is divided into and crushes soil stirring operating area 8 and unbroken soil stirring operating area 12.
Step 2：Top layer crushing and screening, setting cofferdam
A number digging machine 4 is used for crushing and screening restoring area Surface layer's concrete ground or building basis, cleaning screening top layer
Afterwards, 0.5m height cofferdam is constructed in stirring subregion surrounding.
Step 3：Shallow-layer Mixing Machine equipment is assembled and debugged
Connecting rod 21 on swinging stirring-head is directly connected to the external digging machine connecting rod 11 of No. two digging machines, constitutes No. two diggings
The shallow-layer stirring complete set of equipments of machine+swinging stirring-head, by fluid motor-driven, swinging stirring-head can be done in vertical direction
Swinging is moved.Digging machine realizes shallow-layer stirring operation in cofferdam periphery traveling set by step one in the range of its operative radius.
Step 4：Solid phase adding of agent
Fork truck conveys packed 25kg powderies K medicaments and activator E medicaments, the packed bag of above two medicament manual demolition respectively
After dress, it is added separately to repair in subregion accordingly by a digging machine scraper bowl 5.Treat that the invisible white powder of K medicaments stirring starts
Add E medicaments.
Step 5：Shallow-layer stirs operation
As described in step 4, a digging machine is added after the oxidant and activator of solid phase respectively, and a digging machine 4 just stir
After 20~30min, the shallow-layer mixing plant assembled using No. two digging machines+swinging stirring-head is entered to restoring area (miscellaneous fill 14)
Row stirring, stirring object is full for miscellaneous fill (pollution layer) 14 and silty clay (pollution layer) 15 of the waterline located underground below 19
And layer.Single block stirs 1.5~2h, is broken up to ball clay, it is ensured that solid chemicals are fully stirred with saturated soil and underground water
Mix uniform.Stirring finishes surrounding warning tape identification.
Step 6：Top layer solidifies
Complete after 2~4h of shallow-layer stirring operation, top layer solidification construction, curing process are carried out after a cleaning bucket of digging machine 4
Depth bounds is 0~1.5m, and curing materials use the dust-proof cement+Powdered bentonite of sulfate resistance.
Embodiment 1
This project is Nanjing chemical plant soil and groundwater remediation engineering, the side of soil remediation quantities 25.8 ten thousand, underground
Water recovery project amount 170,000 is flat, construction period 150 days.This place soil shallow-layer pollution depth capacity 4m, master stratum is filled out to be miscellaneous
Soil and farinose argillic horizon, Groundwater buried depth shallow (about 1m or so) and abundant.Target contaminant in thin solum/underground water is chlorine
The VOCs/SVOCs type organics such as benzene, benzene, right/ortho-nitrochlorobenzene.
In order to solve soil remediation quantities in the pollution problem of the shallow-layer in situ chemical oxidation recovery project, the engineering
11%th, the 8% of groundwater remediation quantities employs soil in shallow-layer stirring in situ chemical oxidation technique, its middle-shallow layer stirring technique
Earth and groundwater remediation quantities about 13% employs solid phase shallow-layer stirring in situ chemical oxidation repair system of the present utility model.
Practice have shown that, the utility model can effectively solve thin solum pollution, phreatic water moderate~severe organic pollution problem.
In the present embodiment, soil and underground water solid phase shallow-layer stirring in situ chemical oxidation technique applicable cases see the table below.
The soil of table 1 and underground water solid phase shallow-layer stirring in situ chemical oxidation technique applicable cases statistics
The utility model is applied in certain plot (N5-1 plot), using adding solid oxidizer and solid activating agent, soil and
Reparation target has been reached after groundwater remediation.
Described above, only the utility model preferably embodiment, these embodiments are all based on this
Different implementations under utility model general idea, and protection domain of the present utility model is not limited thereto, it is any ripe
Those skilled in the art are known in the technical scope that the utility model is disclosed, the change or replacement that can be readily occurred in, all
It should cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with claims
Protection domain is defined.
Claims (5)
1. a kind of soil and underground water solid phase shallow-layer stirring in situ chemical oxidation repair system, including solid phase adding of agent unit and
Shallow-layer agitating unit, it is characterised in that the solid phase adding of agent unit includes fork truck (1), a digging machine (4) and powder charge scraper bowl
(5), powder charge scraper bowl (5) is arranged on the supporting arm front end of a digging machine (4)；The shallow-layer agitating unit include No. two digging machines (13),
External digging machine connecting rod (11) and swinging stirring-head (17), one end of the external digging machine connecting rod (11) and No. two digging machines
(13) supporting arm front end is connected, and the other end of external digging machine connecting rod (11) is connected with swinging stirring-head (17).
2. soil according to claim 1 and underground water solid phase shallow-layer stirring in situ chemical oxidation repair system, its feature
It is, the swinging stirring-head (17) includes：Connecting rod (21), main body steel construction (22), drive sprocket (23), hydraulic motor
(24), tensioning wheel (25), tooth harrow (26), chain (27), wear-resisting steel disc cutting head (28) and by movable sprocket (29), the main body steel
The top of structure (22) is fixed with connecting rod (21), and the upper end of main body steel construction (22) is provided with drive sprocket (23), main body steel
The lower end of structure (22) is provided with by movable sprocket (29), drive sprocket (23) and is driven between movable sprocket (29) by chain (27)
It is evenly equipped with connection, chain (27) on tooth harrow (26), tooth harrow (26) and is fixed with wear-resisting steel disc cutting head (28), hydraulic motor (24)
The top of main body steel construction (22) is fixed on, output end and the drive sprocket (23) of hydraulic motor (24) are connected, main body steel
Structure (22) is provided with tensioning wheel (25), and tensioning wheel (25) is rotated with chain (27) and is connected, and connecting rod (21) is used to dig with external
Machine connecting rod (11) is connected.
3. soil according to claim 2 and underground water solid phase shallow-layer stirring in situ chemical oxidation repair system, its feature
It is, the connecting rod (21) is directly connected to external digging machine connecting rod (11) by hinge pin.
4. soil according to claim 3 and underground water solid phase shallow-layer stirring in situ chemical oxidation repair system, its feature
It is, 6~12 groups of tooth harrows (26) is evenly equipped with the chain (27).
5. soil according to claim 4 and underground water solid phase shallow-layer stirring in situ chemical oxidation repair system, its feature
It is, 4~6 wear-resisting steel disc cutting heads (28) is installed on every group of tooth harrow (26).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720194887.1U CN206550129U (en) | 2017-03-01 | 2017-03-01 | A kind of soil and underground water solid phase shallow-layer stirs in situ chemical oxidation repair system |
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| CN201720194887.1U CN206550129U (en) | 2017-03-01 | 2017-03-01 | A kind of soil and underground water solid phase shallow-layer stirs in situ chemical oxidation repair system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111872097A (en) * | 2020-06-29 | 2020-11-03 | 东北大学 | Wide chain type cutting double-shaft stirring uniform-mixing soil remediation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111872097A (en) * | 2020-06-29 | 2020-11-03 | 东北大学 | Wide chain type cutting double-shaft stirring uniform-mixing soil remediation device |
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