The content of the invention
The present invention provides a kind of pollutant site remediation method and system based on regional pollution amount, to pollutant
Repaired the geographic area of uneven concentration distribution.
To reach above-mentioned purpose, the invention provides a kind of pollutant site remediation method based on regional pollution amount, its
Comprise the following steps:
S1:Determine the geographic area A where place pollutant-contaminated and the pollutant concentration inside the A of geographic area
Distribution situation;
S2:By geographic area A be divided into the maximum of the pollutant concentration inside many sub-regions, each subregion with most
The difference of small value is less than a preset value;
S3:Inside each subregion a bite injection well, multiple out wells and multiple detection wells are beaten along vertically downward direction;
S4:The each pollutant concentration detected inside well of detection simultaneously sends it to a remote control terminal;
S5:Remote control terminal calculates each subregion when reparation according to the pollutant concentration inside each detection well
The injection rate of required nano-iron material;
S6:Set up a transfer pipeline respectively between each injection well and a nano-iron material reservoir, and each
The end of the nearly injection well side of transfer pipeline sets an electric flow valve and a wireless control module for interconnection respectively;
S7:Remote control terminal is sent out according to the step S5 injection rates for calculating each subregion to corresponding wireless control module
Control signal is sent, wireless control module controls unlatching, aperture and the closing of electric flow valve according to the wireless control signal;
S8:The pollutant in the A of geographic area is detected again after a setting time, if having reached expected reparation
Target then stops repairing, and reparation is continued according to above-mentioned steps S4~S7 if not up to.
In one embodiment of this invention, in step S2, each subregion be shaped as rectangle, circular or polygon,
The area of each subregion is determined according to the average value of geographic area A internal contamination thing concentration.
In one embodiment of this invention, in step S3, the number of detection well and out well inside each subregion
It is 2.
In one embodiment of this invention, in step S3, detection well and out well use complete well well drilling technology system
Make, each detection well and out well are respectively provided with first paragraph, second segment and the 3rd section, wherein, between water-bearing layer and ground
Part is first paragraph, and the part between water-bearing layer is second segment, is the 3rd section positioned at the part of water-bearing layer bottom, wherein,
3rd section of height is 0.5~2m, and the well casing external diameter of each detection well and out well is 50~110mm and drilling diameter is 70
~130mm, the material of well casing is UPVC tubing, and well casing opens sieve positioned at the part of second segment with slot or perforation is opened sieve mode and carried out
Sieve is opened, it is 30% to open sieve rate, and mesh-length is between 5~15cm, and sieve aperture width is between 0.5~2mm, positioned at second segment
The external sheath of well casing have filter screen, the mesh number of filter screen is between 80~100 mesh.
In one embodiment of this invention, in step S3, the outer layer of the well casing in first paragraph and the 3rd section is with swelling
Grave is blocked up, and the outer layer of the well casing in second segment is loaded with grit, wherein, the body of bentonite or grit needed for closure or filling
Product is V,
Wherein, dbFor drilling diameter, dcFor well casing external diameter, h is fills the height of part, and the particle diameter of grit is true with reference to following formula
It is fixed:
D50=(6~8) × d50
Wherein, D50For from large to small, the particle diameter of grit sieve cumulative level up to particle diameter when 50%, d50For from large to small,
Particle diameter of the water-bearing layer particle screening content up to 50%.
In one embodiment of this invention, in step S4, by setting pollutant concentration to sense in each detection well
Device and detect pollutant concentration therein.
In one embodiment of this invention, in step S5:
The injection rate of nano-iron material is the 1~5% of water-bearing layer soil quality M, wherein, water-bearing layer soil quality M=N1
× N2 × N3, wherein, N1 is the volume for the soil that reparation is needed in water-bearing layer, and N2 is the porosity in water-bearing layer, and N3 is soil
Earth density;
The injection rate of nano-iron material is between 0.6~3m3Between/h, the iron-holder of nano-iron material between 0.05~
Between 0.2%.
In one embodiment of this invention, after step S7, further by out well extraction section underground water so that
Pressure differential is formed between injection well and out well, and then promotes nano-iron material to accelerate diffusion, wherein, when the water level in monitoring well
Falling head stops pumping when being h1, wherein, h1 is between 1~5cm, after certain time after drawing water, by the water of extraction
Recharge is to out well.
In one embodiment of this invention, the spacing between injection well, detection well and out well is 2.2~13.0m.
Present invention also offers a kind of pollutant site remediation system based on regional pollution amount, the system be arranged at one by
Geographic area A where the place of contaminants, to be repaired to it, wherein, geographic area A is divided into multiple sub-districts
The difference of the maxima and minima of pollutant concentration inside domain, each subregion is less than inside a preset value, each subregion
A bite injection well, multiple out wells and multiple detection wells are equipped with along vertically downward direction, the repair system includes a remote control
End and multiple transfer pipelines, wherein:
The remote control terminal is by being arranged at each pollutant concentration Sensor monitoring dirt therein detected inside well
Thing concentration is contaminated, remote control terminal calculates each subregion in reparation when institute according to the pollutant concentration inside each detection well
The injection rate of the nano-iron material needed;
Multiple transfer pipelines are respectively erected between each injection well and a nano-iron material reservoir, each transfer pipeline
The end of nearly injection well side is respectively arranged with an electric flow valve and a wireless control module for interconnection;
Remote control terminal is sent according to each subregion injection rate required when repairing to corresponding wireless control module
Control signal, wireless control module controls unlatching, aperture and the closing of electric flow valve according to the wireless control signal.
The pollutant site remediation method and system based on regional pollution amount that the present invention is provided improve conventional method
In be uniformly injected into the extensive repair mode that nano-iron material solution is repaired, saved receiving for pollutant concentration lower region
Rice iron material consumption, while solving the problem of pollutant concentration upper zone can not obtain preferable repair, can suit measures to local conditions
The regions different to pollutant concentration are repaired, and reduce rehabilitation cost and repair time, with very strong practicality and
Promotional value.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not paid
Embodiment, belongs to the scope of protection of the invention.
The invention provides a kind of pollutant site remediation method based on regional pollution amount, it comprises the following steps:
S1:Determine the geographic area A where place pollutant-contaminated and the pollutant concentration inside the A of geographic area
Distribution situation;
S2:By geographic area A be divided into the maximum of the pollutant concentration inside many sub-regions, each subregion with most
The difference of small value is less than a preset value;
Wherein, in step S2, the shape of each subregion can be for example rectangle, circular or polygon, each sub-district
The area in domain determines according to the average value of geographic area A internal contamination thing concentration, for example, when pollutant concentration average value compared with
Gao Shi, can divide the area of each subregion is smaller, can be by each son when the average value of pollutant concentration is relatively low
It is larger that the area in region is divided, and can thus take into account nano-iron material usage amount and actual repair demand, be repaiied with taking into account
Multiple cost and remediation efficiency.In addition, to be less than one pre- for the difference of the maxima and minima of pollutant concentration inside each subregion
If the purpose of value is to ensure that the pollutant concentration difference at each subregion interior point is unlikely to excessive, to ensure to repair
Effect.
S3:Inside each subregion a bite injection well, multiple out wells and multiple detection wells are beaten along vertically downward direction;
Wherein, inside each subregion detection well and the number of out well for example can be 2, can also be according to sub-district
The size in domain is increased and decreased.Spacing between injection well, detection well and out well can be 2.2~13.0m.It is as shown in Figure 1
The schematic diagram of injection well, detection well and out well in the present invention, wherein, the shape of each subregion is divided into pros in Fig. 1
Shape, each injection well is arranged at the diagonal intersection point of square, therefore, in each subregion, the diffusion of nano-iron material
Scope R is the border circular areas using injection well position as the center of circle.
Detect that well and out well for example can be using the manufactures of complete well well drilling technology, Fig. 2 cuts open for detection well and out well
View, as shown in Fig. 2 each detection well and out well are respectively provided with first paragraph L1, second segment L2 and the 3rd section of L3, wherein, it is located at
Part between water-bearing layer and ground is first paragraph L1, and well room is provided with first paragraph L1 the top, and well head is located in well room, well
The top cover of mouth is provided with well lid, and the top cover of well chamber cap is provided with well chamber cap, and the part between water-bearing layer is second segment L2, position
In the part of water-bearing layer bottom be the 3rd section of L3, wherein, the 3rd section of L3 height is 0.5~2m, each detection well and out well
Well casing external diameter be 50~110mm and drilling diameter is 70~130mm, the material of well casing is UPVC tubing, and well casing is located at the
Two sections of L2 part opens sieve with slot or perforation opens sieve mode and carries out out sieve, and it is 30% to open sieve rate, and mesh-length is between 5~15cm
Between, sieve aperture width has a filter screen between 0.5~2mm positioned at the external sheath of the well casing of second segment, the mesh number of filter screen between
Between 80~100 mesh, the 3rd section of L3 constitutes sediment pipe, to assemble tiny sand grains and rock that bottom is flowed into through screen pack and filtrate
Bits, prevent filtrate or filter screen to be deposited thing and block.
In addition, the outer layer of the well casing in first paragraph L1 and the 3rd section of L3 is blocked with bentonite, the well casing in second segment
Outer layer loaded with grit, bentonite and gravel are act as so that well casing is more firm, in addition, gravel can also as filtrate,
Entered with reducing tiny sand grains and landwaste inside well casing, while enabling to nano-iron material by being diffused to after filter screen in well casing
Portion, wherein, the volume of bentonite or grit needed for closure or filling is V,
Wherein, dbFor drilling diameter, dcFor well casing external diameter, h is fills the height of part, and the particle diameter of grit is true with reference to following formula
It is fixed:
D50=(6~8) × d50
Wherein, D50For from large to small, the particle diameter of grit sieve cumulative level up to particle diameter when 50%, d50For from large to small,
Particle diameter of the water-bearing layer particle screening content up to 50%.
S4:The each pollutant concentration detected inside well of detection simultaneously sends it to a remote control terminal;
Wherein it is possible to pollutant concentration sensor be set in each detection well, to detect pollutant concentration therein.
Can also using from detection well in sample drawn detect again by the way of determine pollutant concentration therein.
S5:Remote control terminal calculates each subregion when reparation according to the pollutant concentration inside each detection well
The injection rate of required nano-iron material;
The injection rate of nano-iron material for example can be the 1~5% of water-bearing layer soil quality M, wherein, water-bearing layer soil matter
M=N1 × N2 × N3 is measured, wherein, N1 is the volume for the soil that reparation is needed in water-bearing layer, and N2 is the porosity in water-bearing layer,
N3 is soil density;
The injection rate of nano-iron material is between 0.6~3m3Between/h, the iron-holder of nano-iron material between 0.05~
Between 0.2%.
S6:Set up a transfer pipeline respectively between each injection well and a nano-iron material reservoir, and each
The end of the nearly injection well side of transfer pipeline sets an electric flow valve and a wireless control module for interconnection respectively;
S7:Remote control terminal is sent out according to the step S5 injection rates for calculating each subregion to corresponding wireless control module
Control signal is sent, wireless control module controls unlatching, aperture and the closing of electric flow valve according to the wireless control signal;
As shown in figure 1, there are multiple out wells, after step S7, further by taking out in each subregion in Fig. 1
Go out well extraction section underground water so as to form pressure differential between injection well and out well, and then promote nano-iron material to accelerate expansion
Dissipate, wherein, stopped pumping when the water level decreasing in monitoring well is highly h1, wherein, h1 is between 1~5cm, after drawing water
After certain time, by the Water Spreading of extraction to out well.
S8:The pollutant in the A of geographic area is detected again after a setting time, if having reached expected reparation
Target then stops repairing, and reparation is continued according to above-mentioned steps S4~S7 if not up to.
In general, after first time repairs, answering continuous 8~24 months and carrying out target contaminant prison to being repaired region
Survey, the same area progress should be repeatedly repaired if below standard until being repaired region reaches expected reparation target.
Present invention also offers a kind of pollutant site remediation system based on regional pollution amount, this hair is illustrated in figure 3
The schematic diagram of the pollutant site remediation system based on regional pollution amount of bright offer, it is pollutant-contaminated that the system is arranged at one
Place where geographic area A, to be repaired to it, wherein, geographic area A is divided into many sub-regions, each sub-district
The difference of the maxima and minima of pollutant concentration inside domain is less than inside a preset value, each subregion along side straight down
To being equipped with a bite injection well, multiple out wells and multiple detection wells, for injection well, detection well in the present invention and take out as shown in Figure 1
Go out the schematic diagram of well, the repair system includes a remote control terminal 1 and multiple transfer pipelines 2, wherein:
Remote control terminal 1 is by being arranged at each pollutant concentration Sensor monitoring pollutant therein detected inside well
Concentration, remote control terminal 1 according to it is each detection well inside pollutant concentration calculate each subregion in reparation when it is required
Nano-iron material injection rate;
Multiple transfer pipelines 2 are respectively erected between each injection well and a nano-iron material reservoir, each delivery pipe
The end of the nearly injection well side in road 2 is respectively arranged with an electric flow valve 3 and a wireless control module 4 for interconnection;
Remote control terminal 1 is sent out according to each subregion injection rate required when repairing to corresponding wireless control module 4
Control signal is sent, wireless control module 4 controls unlatching, aperture and the closing of electric flow valve 3 according to the wireless control signal.
The pollutant site remediation system based on regional pollution amount that the present invention is provided is used to implement above-mentioned dirty based on region
The pollutant site remediation method of dye amount, wherein, each step in above-mentioned restorative procedure can be applied particularly to the repair system
In.
The pollutant site remediation method and system based on regional pollution amount that the present invention is provided improve conventional method
In be uniformly injected into the extensive repair mode that nano-iron material solution is repaired, saved receiving for pollutant concentration lower region
Rice iron material consumption, while solving the problem of pollutant concentration upper zone can not obtain preferable repair, can suit measures to local conditions
The regions different to pollutant concentration are repaired, and reduce rehabilitation cost and repair time, with very strong practicality and
Promotional value.
One of ordinary skill in the art will appreciate that:Accompanying drawing be module in the schematic diagram of one embodiment, accompanying drawing or
Flow is not necessarily implemented necessary to the present invention.
One of ordinary skill in the art will appreciate that:The module in device in embodiment can be according to embodiment description point
It is distributed in the device of embodiment, respective change can also be carried out and be disposed other than in one or more devices of the present embodiment.On
The module for stating embodiment can be merged into a module, can also be further split into multiple submodule.
Finally it should be noted that:The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that:It still may be used
To be modified to the technical scheme described in previous embodiment, or equivalent substitution is carried out to which part technical characteristic;And
These modifications are replaced, and the essence of appropriate technical solution is departed from the spirit and model of technical scheme of the embodiment of the present invention
Enclose.