CN206747264U - A kind of soil and underground water high-pressure rotary-spray stirs joint in-situ remediation system with shallow-layer - Google Patents

Abstract

The utility model provides a kind of soil and underground water high-pressure rotary-spray and stirs joint in-situ remediation system with shallow-layer, draw hole system, deep-level high pressure churning in-situ injection system and shallow-layer stir in situ system including high-pressure rotary-spray in-situ injection point, the high-pressure rotary-spray in-situ injection point draws hole system and draws drilling machine and air down-hole hammer drilling tool including the first screw-rod air compressor, walking；The deep-level high pressure churning in-situ injection system includes jet drill rig, high-pressure injection pump, C+N1+N2 dispensing terminals, K dispensing terminals, K+B dispensing terminals, the second screw-rod air compressor；The shallow-layer stir in situ system includes the first dispensing terminal, the second dispensing terminal, digging machine, digging machine connecting rod and stirring-head.The utility model combines repair system as the in-situ chemical for the severe soil and Organic Contamination of Groundwater plot for locally lying in fragmentary point source of pollution, has efficiency of construction height, significant effect, the advantage for being suitable for various stratum.

Description

A kind of soil and underground water high-pressure rotary-spray stirs joint in-situ remediation system with shallow-layer

Technical field

It the utility model is related to a kind of soil and underground water high-pressure rotary-spray and stir joint in-situ remediation system with shallow-layer, belong to Soil and underground water in-situ remediation system technical field.

Background technology

Volatility and half volatile (VOVs/SVOVs) organic contamination of soil and underground water is the weight of China's contaminated site One of pollution type is wanted, it is former to avoid the secondary pollution caused by excavating transport because VOVs/SVOVs has certain volatility Position recovery technique is progressively promoted and applied.

The U.S. has had been put into substantial contribution and has been used for soil and groundwater remediation since last century the mid-80, in situ Chemical oxidation (In Situ Chemical Oxidation, ISCO), in-situ chemical reduction (In Situ Chemical Reduction, ISCR) etc. new based technique for in-situ remediation arise at the historic moment.ISCO/ISCR technologies are relied on and added to soil and underground water Chemical oxidizing agent/reducing agent, the pollutant in underground water is oxidized to the relatively low product of toxicity, so as to reach reparation mesh , such technology can handle multiple pollutant simultaneously, and treatment effeciency is higher, typically not contaminated thing concentration limitation.

In situ chemical oxidation, in-situ chemical reduction, microorganism remediation in situ, In Situ Heating technology have obtained engineering in recent years Change application.Wherein microorganism remediation technology is only effective to low~middle concentration contaminated site, and microorganism fungus kind has to pollutant Selectivity, largely limits the application of the technology；In Situ Heating technology has high to organic contamination source removal efficiency Advantage, using steam heating and resistance heating as representative, its essence be by improve temperature so as to improve the vapour pressure of pollutant or It is heated to more than its boiling point, (MPE) technology is extracted by soil vapor extraction (SVE) or multiphase, pollutant is promoted to ground Laggard end of line gas and wastewater treatment, therefore, the less permeable layer extraction efficiency such as argillic horizon is low, meanwhile, the reparation for zone of saturation Need to carry out large-scale water-stop curtain and dewatering construction, therefore rehabilitation cost is high, also greatly limit the application of the technology.

For serious pollution VOCs/SVOCs organic contaminations place soil and underground water combined pollution, in situ chemical oxidation, In-situ chemical reduction has a clear superiority.Conventional chemical oxidation medicament include Fenton reagent, potassium permanganate, ozone, activation Persulfate etc., can the organic pollution such as rehabilitating soil and benzene homologues in underground water, nitrobenzene, petroleum hydrocarbon.Conventional reduction Agent includes Zero-valent Iron, ferrous iron, calcium polysulfide etc..

Adding for oxidant/reducing agent mainly has stirring and two kinds of forms of injection/injection at present, specifically includes：Injection well Injection, drill bit direct press type in situ injection, deep-layer stirring injection, high-pressure rotary-spray injection, other ground grouting process etc..

United States Patent (USP) US 2002/0143226A1 and US006457905 disclose two kinds of chemical oxidation original position drill bit injections Repair system, chemical oxidizing agent is injected into contaminated soil by auger stem or injection drill bit, it is impossible to realize that depthkeeping degree is repaiied It is multiple.Patent No. ZL201410387735.4's (application publication number CN104174643A, data of publication of application on December 3rd, 2014) Chinese invention patent discloses " a kind of organic polluted soil and underground water in-situ repairing device and restorative procedure ", Application No. 201410615166.4 (application publication number CN104438315A, data of publication of application on March 25th, 2015) " one kind repairs pollution The in situ chemical oxidation injection device of soil and groundwater " Chinese invention patent application discloses a kind of chemical oxidation injection well note Enter system, technology used in above patent is to add liquid medicine by injection well screen casing, and shortcoming is clayey soil layer diffusion effect Fruit is poor, while is difficult to the control in the added amount of chemical in vertical depth direction.

Patent No. ZL201620630167.0 (Authorization Notice No. CN205762952U, authorized announcement date December 7 in 2016 Day) utility model patent " a kind of soil and underground water in situ chemical oxidation high-pressure rotary-spray inject repair system " revolved using high pressure Spray injecting systems can solve deep layer serious pollution, but the situation for containing fragmentary point-source pollution for local shallow-layer, deep layer has not Foot part, shallow-layer homogenieity is poor, and injection is difficult to reach sufficient mixed effect.Patent No. ZL201510108244.6 (applications Publication No. CN104624634A, data of publication of application on May 20th, 2015) patent of invention disclose a kind of " organic polluted soil Chemical oxidation restorative procedure " and Application No. 201410831123.X (application publication number CN104624629A, data of publication of application On May 20th, 2015) application for a patent for invention disclose it is " a kind of using the repairing organic polluted place of two-way stirring injection method Method " is added by drilling rod and repairs medicament, substantially deep-layer stirring system, can not solve deep layer sandwich of layers and determining for pollution sources be present Depth repairs problem.

Single repair system can not be fully solved the pollution in complicated serious pollution place and control used by above patented technology Problem is managed, there is an urgent need to practicable combined repairing system.

Utility model content

The purpose of this utility model is to solve the above-mentioned problems of the prior art, and then a kind of soil of offer and ground Lower water high-pressure rotary-spray stirs joint in-situ remediation system with shallow-layer.

The purpose of this utility model is achieved through the following technical solutions：

A kind of soil and underground water high-pressure rotary-spray stirs joint in-situ remediation system with shallow-layer, including：High-pressure rotary-spray is in situ Injection point draws hole system, deep-level high pressure churning in-situ injection system and shallow-layer stir in situ system,

The high-pressure rotary-spray in-situ injection point, which draws hole system, includes the first screw-rod air compressor, first pressure table, the first valve Door, walking draw drilling machine and air down-hole hammer drilling tool, and the bottom that walking draws drilling machine is connected with air down-hole hammer drilling tool, the The outlet of one screw-rod air compressor is connected with one end of the first valve, and the other end and the walking of the first valve draw drilling machine and bottom The air down-hole hammer drilling tool at end is connected, and the first screw-rod air compressor port of export has first pressure table；

The deep-level high pressure churning in-situ injection system includes jet drill rig, the second valve, second pressure gauge, high-pressure slip-casting Pump, the 3rd valve, the 4th valve, C+N1+N2 dispensing terminals, the 5th valve, K dispensing terminals, the 6th valve, K+B dispensing terminals, fresh sky Gas import, the second screw-rod air compressor, the 3rd pressure gauge and the 7th valve, outlet and the second valve of the high-pressure injection pump One end is connected, and the other end of the second valve is connected with the liquid injection pipe of jet drill rig, fresh air inlet and the second screw The inlet end of air compressor machine is connected, and the outlet side of the second screw-rod air compressor is connected with one end of the 7th valve, the 7th valve The other end be connected with the air injection pipe of jet drill rig, the 3rd pressure gauge is located at the outlet side of the second screw-rod air compressor, the 3rd One end of valve is connected with the entrance of high-pressure injection pump, the other end of the 3rd valve one end with the 4th valve, the 5th respectively One end of valve is connected with one end of the 6th valve, and the other end of the 4th valve is connected with C+N1+N2 dispensing terminals, the 5th valve The other end of door is connected with K dispensing terminals, and the other end of the 6th valve is connected with K+B dispensing terminals, and second pressure gauge is arranged on The outlet side of high-pressure injection pump；

The shallow-layer stir in situ system includes the first dispensing terminal, the second dispensing terminal, digging machine, digging machine connecting rod and stirring Head, first dispensing terminal are matched somebody with somebody including C medicaments output pipe, the first threeway, the 8th valve, the first corrosion protection pump, the 9th valve, L1 Medicinal cupping clear water inlet pipeline, the tenth valve, C medicaments stoste ton bucket and C dispensing canisters, one end of the tenth valve and C medicaments are former The bottom of liquid ton bucket is connected, and the other end of the tenth valve is connected with the top of C dispensing canisters, and the top of C dispensing canisters is connected with L1 dispensing canister clear water inlet pipelines, one end of the 9th valve are connected with the bottom of C dispensing canisters, the other end of the 9th valve and The entrance of one corrosion protection pump is connected, and the outlet of the first corrosion protection pump is connected with one end of the 8th valve, the other end of the 8th valve It is connected with the first end of the first threeway, the second end of the first threeway is connected with the top of C dispensing canisters, and the 3rd of the first threeway the End is connected to the top of stirring-head by C medicament output pipes；

Second dispensing terminal includes F+N1+N2 output pipes, the second threeway, the 11st valve, the second corrosion protection pump, the tenth Two valves, L2 dispensing canister clear water inlet pipeline, F+N1+N2 confection drug-feeding tube roads and F+N1+N2 dispensing canisters, the F+N1+ The top of N2 dispensing canisters is connected to L2 dispensing canister clear water inlet pipelines and F+N1+N2 confection drug-feeding tubes road, and the 12nd One end of valve is connected with the bottom of F+N1+N2 dispensing canisters, the other end of the 12nd valve and the entrance phase of the second corrosion protection pump Connection, one end of the 11st valve is connected with the outlet of the second corrosion protection pump, the other end of the 11st valve and the second threeway First end is connected, and the second end of the second threeway is connected with the top of F+N1+N2 dispensing canisters, and the 3rd end of the second threeway is by F+ N1+N2 output pipes are connected to the top of stirring-head；

Stirring-head is connected with the digging machine connecting rod on digging machine.

The beneficial effects of the utility model are：

First, hole of drawing --- the deep-level high pressure churning injection --- system of shallow-layer stir in situ of the present utility model, relative to The systems such as Soil leaching, thermal desorption, In Situ Heating, it is not necessary to complicated auxiliary equipment (such as bottom-mud dewatering, water process, thermal oxide Room, vent gas treatment etc.), draw drilling machine, high-pressure injection rig and injection device used in it, shallow-layer Mixing Machine is easy to get, scene peace Dress is quick, constructing operation is easy.

2nd, deep-level high pressure churning injection of the present utility model --- shallow-layer stirs joint in-situ remediation system, takes into full account The hydrogeologic condition and plant equipment work capacity of soil and underground water, shallow-layer is due to the big miscellaneous fill of permeability difference Based on, deep layer multilayer soil property and preservation underground water is distributed with.Shallow-layer is easily caused using high-pressure injection and returns slurry, medicament wastes, and Repairing effect is difficult to ensure that；And deep layer has the situation of local point-source pollution, beyond shallow-layer Mixing Machine depth of implements scope. Therefore, single repair system is difficult to the soil and Organic Contamination of Groundwater for solving the problems, such as serious pollution plot.

3rd, deep-level high pressure churning injection of the present utility model --- shallow-layer stirs joint in-situ remediation system, relative to different The common disposal system of position cement kiln collaboration, had both been avoided because of potential safety hazard existing for deep pit digging, and had effectively been prevented because individually Secondary pollution problem caused by pump-and-treat system underground water and transport VOCs/SVOCs contaminated soils.

4th, injected using deep-level high pressure churning of the present utility model --- shallow-layer stirs joint in-situ remediation system, relatively In In Situ Heating system, rehabilitation cost is relatively low, can be directed to local point source pollution depth scope, carry out shallow-layer repeatedly stirring in situ or The local more wheel injections of deep layer, reach good repairing effect.Because contaminated site Groundwater buried depth is shallow and abundant, half volatile has Organic pollutants boiling point is of a relatively high, steam forces down, and need to typically be heated to higher temperature (such as 120 DEG C~180 DEG C) and just possess original position Gasify the possibility of extracting after heating, meanwhile, zone of saturation reparation need to lay the water-stop curtain of large area, therefore rehabilitation expense is high.

5th, deep-level high pressure churning injection of the present utility model --- shallow-layer stirs joint in-situ remediation system, its mid-deep strata High-pressure rotary-spray injecting systems are better than deep-layer stirring system, can be applied to the local complicated severe place containing pollution sources of deep layer, lead to Depthkeeping degree multiple injection is crossed, improves injection volume, solves deep layer Local Null asterism source pollution problem.And deep-layer stirring is from top to bottom Mechanical agitation, have that dilation angle is small, disturbance uncontamination layer the defects of causing contamination.

Brief description of the drawings

Fig. 1 is the operation principle schematic diagram that soil and underground water high-pressure rotary-spray stir joint in-situ remediation system with shallow-layer.

Fig. 2 is the structural representation of stirring-head 49.

Fig. 3 is the side view of stirring-head 49.

Fig. 4 is the front view of stirring-head 49.

Reference in figure, 1 is miscellaneous fill layer (pollution), and 2 be farinose argillic horizon (pollution), and 3 be that fine sand layer is (dirty Dye), 4 be farinose argillic horizon (pollution), and 5 be farinose argillic horizon (uncontamination), and 6 be level of ground water, and 7 be air intake, and 8 be first Screw-rod air compressor, 9 be first pressure table, and 10 first valves, 11 be that walking draws drilling machine, and 12 be air down-hole hammer drilling tool, 13 be jet drill rig, and 14 be churning section (medicament is repaired in injection), and 15 be the second valve, and 16 be second pressure gauge, and 17 be high pressure injection Stock pump, 18 be the 3rd valve, and 19 be the 4th valve, and 20 be C+N1+N2 dispensing terminals, and 21 be the 5th valve, and 22 be K dispensing terminals, 23 It is K+B dispensing terminals for the 6th valve, 24,25 be fresh air inlet, and 26 be the second screw-rod air compressor, and 27 be the 3rd pressure Table, 28 be the 7th valve, and 29 be C medicaments (L1) output pipe, and 30 be the first threeway, and 31 be the 8th valve, and 32 be the first anti-corrosion Pump, 33 be the 9th valve, and 34 be L1 dispensing canister clear water inlet pipelines, and 35 be water meter, and 36 be the tenth valve, and 37 be C medicament stostes Ton bucket, 38 be C dispensing canisters, and 39 be F+N1+N2 (L2) output pipe, and 40 be the second threeway, and 41 be the 11st valve, and 42 be second Corrosion protection pump, 43 be the 12nd valve, and 44 be L2 dispensing canister clear water inlet pipelines, and 45 be F+N1+N2 confection drug-feeding tubes road, 46 For F+N1+N2 (L2) dispensing canister, 47 be digging machine, and 48 be digging machine connecting rod, and 49 be stirring-head, 50 be contaminated soil and underground water with Medicament mixed zone, 51 be connecting rod, and 52 be main body steel construction, and 53 be drive sprocket, and 54 be hydraulic motor, and 55 be tensioning wheel, 56 It is chain for tooth harrow, 57,58 be wear-resisting steel disc cutting head, and 59 be by movable sprocket, and 60 be mixing direction, and R injects for high-pressure rotary-spray Medicament dilation angle, a are that shallow-layer stirs standard side length of element.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing：The present embodiment is with the utility model skill Implemented under premised on art scheme, give detailed embodiment, but the scope of protection of the utility model be not limited to it is following Embodiment.

As shown in Figure 1 to 4, a kind of soil and underground water high-pressure rotary-spray involved by the present embodiment is combined with shallow-layer stirring In-situ remediation system, including：It is former that high-pressure rotary-spray in-situ injection point draws hole system, deep-level high pressure churning in-situ injection system and shallow-layer Position stirring system,

The high-pressure rotary-spray in-situ injection point, which draws hole system, includes the first screw-rod air compressor 8, first pressure table 9, first Valve 10, walking draw drilling machine 11 and air down-hole hammer drilling tool 12, and the bottom that walking draws drilling machine 11 is connected with air latent Drift drilling tool 12, the first screw-rod air compressor 8 outlet is connected with one end of the first valve 10, the other end of the first valve 10 and Walking draws drilling machine 11 and the air down-hole hammer drilling tool 12 of bottom is connected, and the port of export of the first screw-rod air compressor 8 has first Pressure gauge 9；

The deep-level high pressure churning in-situ injection system includes jet drill rig 13, the second valve 15, second pressure gauge 16, height Pressure injection stock pump 17, the 3rd valve 18, the 4th valve 19, C+N1+N2 dispensing terminals 20, the 5th valve 21, K dispensing terminals 22, the 6th valve Door 23, K+B dispensing terminals 24, fresh air inlet 25, the second screw-rod air compressor 26, the 3rd pressure gauge 27 and the 7th valve 28, The outlet of the high-pressure injection pump 17 is connected with one end of the second valve 15, the other end and the jet drill rig 13 of the second valve 15 Liquid injection pipe be connected, fresh air inlet 25 is connected with the inlet end of the second screw-rod air compressor 26, and the second screw is empty The outlet side of press 26 is connected with one end of the 7th valve 28, the other end of the 7th valve 28 and the air injection pipe of jet drill rig 13 It is connected, the 3rd pressure gauge 27 is located at the outlet side of the second screw-rod air compressor 26, one end of the 3rd valve 18 and high-pressure slip-casting The entrance of pump 17 is connected, the other end of the 3rd valve 18 respectively one end with the 4th valve 19, the 5th valve 21 one end and One end of 6th valve 23 is connected, and the other end of the 4th valve 19 is connected with C+N1+N2 dispensing terminals 20, the 5th valve 21 The other end is connected with K dispensing terminals 22, and the other end of the 6th valve 23 is connected with K+B dispensing terminals 24, and second pressure gauge 16 is set Put in the outlet side of high-pressure injection pump 17；

The shallow-layer stir in situ system includes the first dispensing terminal, the second dispensing terminal, digging machine 47, digging machine connecting rod 48 and stirred Mix first 49, first dispensing terminal include C medicaments output pipe 29, the first threeway 30, the 8th valve 31, the first corrosion protection pump 32, 9th valve 33, L1 dispensing canister clear water inlet pipeline 34, the tenth valve 36, C medicament stoste tons bucket 37 and C dispensing canisters 38, it is described One end of tenth valve 36 is connected with the bottom of C medicament stoste tons bucket 37, the other end and the C dispensing canisters 38 of the tenth valve 36 Top is connected, and the top of C dispensing canisters 38 is connected with L1 dispensing canister clear water inlet pipeline 34, and one end of the 9th valve 33 is matched somebody with somebody with C The bottom of medicinal cupping 38 is connected, and the other end of the 9th valve 33 is connected with the entrance of the first corrosion protection pump 32, the first corrosion protection pump 32 Outlet be connected with one end of the 8th valve 31, the other end of the 8th valve 31 is connected with the first end of the first threeway 30, Second end of the first threeway 30 is connected with the top of C dispensing canisters 38, and the 3rd end of the first threeway 30 is by C medicaments output pipe 29 It is connected to the top of stirring-head 49；

Second dispensing terminal includes F+N1+N2 output pipes 39, the second threeway 40, the 11st valve 41, the second anti-corrosion Pump 42, the 12nd valve 43, L2 dispensing canister clear water inlet pipeline 44, F+N1+N2 confection drug-feeding tubes road 45 and F+N1+N2 match somebody with somebody Medicinal cupping 46, the top of the F+N1+N2 dispensing canisters 46 are connected to L2 dispensing canister clear water inlet pipeline 44 and F+N1+N2 mixing One end of the valve 43 of medicament drug-feeding tube road the 45, the 12nd is connected with the bottom of F+N1+N2 dispensing canisters 46, the 12nd valve 43 The other end is connected with the entrance of the second corrosion protection pump 42, and one end of the 11st valve 41 is connected with the outlet of the second corrosion protection pump 42 Logical, the other end of the 11st valve 41 is connected with the first end of the second threeway 40, the second end of the second threeway 40 and F+N1+N2 The top of dispensing canister 46 is connected, and the 3rd end of the second threeway 40 is connected to the upper of stirring-head 49 by F+N1+N2 output pipes 39 Side；

Stirring-head 49 is connected with the digging machine connecting rod 48 on digging machine 47.

The stirring-head 49 includes：Connecting rod 51, main body steel construction 52, drive sprocket 53, hydraulic motor 54, tensioning wheel 55th, tooth harrow 56, chain 57, wear-resisting steel disc cutting head 58 and company is fixed with by movable sprocket 59, the top of the main body steel construction 52 Extension bar 51, the upper end of main body steel construction 52 are provided with drive sprocket 53, and the lower end of main body steel construction 52 is provided with by movable sprocket 59, Drive sprocket 53 and it is connected between movable sprocket 59 by chain 57, is evenly equipped with tooth harrow 56 on chain 57, it is fixed on tooth harrow 56 There is wear-resisting steel disc cutting head 58, hydraulic motor 54 is fixed on the top of main body steel construction 52, the output end of hydraulic motor 54 and master Movable sprocket 53 is connected, and main body steel construction 52 is provided with tensioning wheel 55, and tensioning wheel 55 is rotatablely connected with chain 57, connecting rod 51 For being connected with digging machine connecting rod 48.

The connecting rod 51 is directly connected to digging machine connecting rod 48 by hinge pin.

6~12 groups of tooth harrows 56 are evenly equipped with the chain 57.

4~6 wear-resisting steel disc cutting heads 58 are installed on every group of tooth harrow 56.

Joint in situ chemical oxidation repair system is stirred with shallow-layer using the soil and underground water high-pressure rotary-spray of the present embodiment, The in-situ immobilization of soil and underground water is realized by following steps：

Step 1: high-pressure rotary-spray in-situ injection point is layouted, measurement and positioning and draws hole；

Studied serious pollution plot (being N3-1, N3-2 plot in Examples hereinafter 1) carries out levelling of the land compacting, cloth Draw hole after point, measurement and positioning.

Step 2: the high-pressure rotary-spray injection of deep layer, is divided into 1~3 wheel injection：

Using air-liquid double pipe technique, injection medicament 20~30Mpa of pressure, medicament liquid stream is repaired from high pressure medicament liquid stream Entrance is delivered at the medicament flow nozzles of high-pressure rotary jetting driller and spurted into soil and underground water；Second screw-rod air compressor 26 Pressure：0.4~0.8Mpa, compressed air are delivered to the injection of high pressure spray exit point position from fresh air inlet 25.

A) first round injects：C+N1+N2 medicaments

C:N1:N2 mass ratio is 1:0.10~0.25:0.02~0.08.

The 4th valve 19 is opened, closes the 5th valve 21 and the 6th valve 23, injects C+N1+N2 medicaments；The is opened simultaneously Seven valves 28, compressed air is injected while injecting high pressure medicament liquid stream.

B) the second wheel injection：K medicaments

The 5th valve 21 is opened, closes the 4th valve 19 and the 6th valve 23, injects K medicaments, while open the 7th valve 27, inject compressed air while injecting high pressure medicament liquid stream.

After first round injection finishes medicament reaction 2 days, start the second wheel injection K medicaments and react 1 week.

C) third round is injected：(K+B) medicament

K:B mass ratio is 1:0.2~2.0.

The 6th valve 23 is opened, closes the 5th valve 21 and the 4th valve 19, injects K+B medicaments, while open the 7th valve Door 28, compressed air is injected while injecting high pressure medicament liquid stream.

Third round injects K+B, and medicament reacts 1~2 month.

It is fine sand layer (pollution) 3 and farinose argillic horizon (pollution) 4 that formation volumes are repaired in the deep-level high pressure injection, is implemented It is 4~12m that depth is repaired in example 1, repairs medicament ejector single hole and carries out from bottom to top.

Step 3: the stir in situ of shallow-layer, is divided into 1~2 wheel construction：

A) shallow-layer stirring subregion, measurement and positioning：Gridding subregion (preferably 5m × 5m) measurement and positioning afterwards, stirring is from top to bottom Carry out；Reparation depth is 0~4m, and shallow-layer is divided into two layers by phreatic line 6, i.e. 0~1m is unsaturation layer, and 1~4m is saturation Layer (in embodiment 1)；

B) first round shallow-layer stir in situ

After third round injects K+B, start the stirring of first round shallow-layer, add L1 liquid (C liquid medicines) and L2 (F+N1+N2) Mixed solution, F:N1:N2 mass ratio is 1:1.5~2.5:0.2~0.8；

The shallow-layer stir in situ system is made up of shallow-layer Mixing Machine and biliquid dispensing terminal；The shallow-layer Mixing Machine bag Include：Digging machine connecting rod 48, connecting rod 51, main body steel construction 52, drive sprocket 53, hydraulic motor 54, tensioning wheel 55, tooth harrow 56, Chain 57, wear-resisting steel disc cutting head 58 and by movable sprocket 59, mixing direction 60 is counterclockwise.

The biliquid dispensing terminal is made up of the first dispensing terminal (C medicaments) and the second dispensing terminal (F+N1+N2)：

1. the first dispensing terminal (C medicaments), including：C medicaments output pipe 29, the first threeway 30, the 8th valve 31, first are anti- Rotten pump 32, the 9th valve 33, L1 dispensing canister clear water inlet pipeline 34, water meter 35, the tenth valve 36, C medicament stoste tons bucket 37, C Dispensing canister 38；

2. the second dispensing terminal (F+N1+N2), including：F+N1+N2 output pipes 39, the second threeway 40, the 11st valve 41, Two corrosion protection pumps 42, the 12nd valve 43, dispensing canister clear water inlet pipeline 44, F+N1+N2 confection drug-feeding tubes road 45, F+N1+ N2 dispensing canisters 46.

C) the second wheel shallow-layer stirring

Agitating mode and medicament addition are stirred with the first round.

The two-wheeled stirring, stir in situ operation is carried out by the shallow-layer stir in situ equipment of digging machine 47+ stirring-heads 49, it is dirty Contaminate soil and underground water and stir 0~4m of depth with medicament mixed zone 50.

Wherein, C is hydrogen peroxide (hydrogen peroxide) weak solution, and K is persulfate, and B is liquid caustic soda (sodium hydroxide) solution, and N1 is Sodium citrate, N2 are citric acid, and F medicaments are ferrous sulfate.

Embodiment 1

The present embodiment is the in-situ chemical oxygen that emphasis pollutes plot/region in organic polluted soil/groundwater remediation engineering The churning of change technology application deep-level high pressure is injected --- the joint repair system of shallow-layer stir in situ realize repair medicament (oxidant K, C the method) added, the operation being not particularly illustrated in the present embodiment, enters with reference to the system being had been given in utility model content OK, will not be repeated here.

The present embodiment is described in detail below：

By taking Nanjing chemical plant soil and groundwater remediation engineering as an example, the project soil remediation quantities 25.8 ten thousand side, Groundwater remediation quantities 170,000 is flat, and the target contaminant in soil and underground water is chlorobenzene, right/ortho-nitrochlorobenzene is (following Referred to as " right/adjacent nitre ") etc. VOCs/SVOCs type organics.Wherein serious pollution plot (N3-1, N3-2 plot) proportion compared with Greatly, soil remediation quantities accounts for 78.73%, and the groundwater remediation quantities concurrently repaired accounts for 10.00%, and this project Difficult point and emphasis.For serious pollution block main body reparation is using single high-pressure rotary-spray injection in situ chemical oxidation (injection K Medicament) repair system is difficult to situation up to standard completely, consider that the plot Groundwater buried depth is shallow (1m), shallow-layer contains miscellaneous fill and powder Two layers of pollution soil layer of Extra-fine sand and silty clay, and shallow-layer are distributed with two layers of pollution soil layer of matter clay, deep layer 4~12m depth Or deep layer locally contains fragmentary pollution sources (right/adjacent nitre ＞ 1000ppm), supplement reparation employs Tthe utility model system, repaired Significant effect.

Described above, only the preferable embodiment of the utility model, these embodiments are all based on this Different implementations under utility model general idea, and the scope of protection of the 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 discloses, the change or replacement that can be readily occurred in, all It should cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should be with claims Protection domain is defined.

Claims (5)

1. a kind of soil and underground water high-pressure rotary-spray stir joint in-situ remediation system with shallow-layer, including：High-pressure rotary-spray note in situ Exit point draws hole system, deep-level high pressure churning in-situ injection system and shallow-layer stir in situ system, it is characterised in that

The high-pressure rotary-spray in-situ injection point, which draws hole system, includes the first screw-rod air compressor (8), first pressure table (9), first Valve (10), walking draw drilling machine (11) and air down-hole hammer drilling tool (12), and walking draws the bottom connection of drilling machine (11) There is air down-the-hole hammer drill to have (12), the first screw-rod air compressor (8) outlet is connected with one end of the first valve (10), the first valve The air down-hole hammer drilling tool (12) that the other end of door (10) draws drilling machine (11) and bottom with walking is connected, the first screw Air compressor machine (8) port of export has first pressure table (9)；

The deep-level high pressure churning in-situ injection system include jet drill rig (13), the second valve (15), second pressure gauge (16), High-pressure injection pump (17), the 3rd valve (18), the 4th valve (19), C+N1+N2 dispensing terminals (20), the 5th valve (21), K make up a prescription Stand (22), the 6th valve (23), K+B dispensing terminals (24), fresh air inlet (25), the second screw-rod air compressor (26), the 3rd Pressure gauge (27) and the 7th valve (28), the outlet of the high-pressure injection pump (17) are connected with one end of the second valve (15), The other end of second valve (15) is connected with the liquid injection pipe of jet drill rig (13), fresh air inlet (25) and the second screw The inlet end of air compressor machine (26) is connected, and the outlet side of the second screw-rod air compressor (26) is connected with one end of the 7th valve (28) Logical, the other end of the 7th valve (28) is connected with the air injection pipe of jet drill rig (13), and the 3rd pressure gauge (27) is located at the second spiral shell The outlet side of rod-type air compressor machine (26), one end of the 3rd valve (18) are connected with the entrance of high-pressure injection pump (17), the 3rd valve Other end one end, one end of the 5th valve (21) and one end of the 6th valve (23) with the 4th valve (19) respectively of door (18) It is connected, the other end of the 4th valve (19) is connected with C+N1+N2 dispensing terminals (20), the other end and K of the 5th valve (21) Dispensing terminal (22) is connected, and the other end of the 6th valve (23) is connected with K+B dispensing terminals (24), and second pressure gauge (16) is set In the outlet side of high-pressure injection pump (17)；

The shallow-layer stir in situ system includes the first dispensing terminal, the second dispensing terminal, digging machine (47), digging machine connecting rod (48) and stirred Head (49) is mixed, first dispensing terminal is prevented including C medicaments output pipe (29), the first threeway (30), the 8th valve (31), first Rotten pump (32), the 9th valve (33), L1 dispensing canister clear water inlet pipelines (34), the tenth valve (36), C medicament stoste ton buckets (37) With C dispensing canisters (38), one end of the tenth valve (36) is connected with the bottom of C medicament stoste ton buckets (37), the tenth valve (36) the other end is connected with the top of C dispensing canisters (38), and the top of C dispensing canisters (38) is connected with the water inlet of L1 dispensing canisters clear water Pipeline (34), one end of the 9th valve (33) are connected with the bottom of C dispensing canisters (38), the other end of the 9th valve (33) and The entrance of one corrosion protection pump (32) is connected, and the outlet of the first corrosion protection pump (32) is connected with one end of the 8th valve (31), and the 8th The other end of valve (31) is connected with the first end of the first threeway (30), the second end and the C dispensing canisters of the first threeway (30) (38) top is connected, and the 3rd end of the first threeway (30) is connected to the upper of stirring-head (49) by C medicaments output pipe (29) Side；

Second dispensing terminal is prevented including F+N1+N2 output pipes (39), the second threeway (40), the 11st valve (41), second Rotten pump (42), the 12nd valve (43), L2 dispensing canister clear water inlet pipelines (44), F+N1+N2 confection drug-feeding tubes road (45) With F+N1+N2 dispensing canisters (46), the top of the F+N1+N2 dispensing canisters (46) is connected to L2 dispensing canister clear water inlet pipelines (44) and F+N1+N2 confection drug-feeding tubes road (45), one end of the 12nd valve (43) with F+N1+N2 dispensing canisters (46) Portion is connected, and the other end of the 12nd valve (43) is connected with the entrance of the second corrosion protection pump (42), the 11st valve (41) One end is connected with the outlet of the second corrosion protection pump (42), the other end of the 11st valve (41) and the first end of the second threeway (40) It is connected, the second end of the second threeway (40) is connected with the top of F+N1+N2 dispensing canisters (46), and the 3rd of the second threeway (40) the End is connected to the top of stirring-head (49) by F+N1+N2 output pipes (39)；

Stirring-head (49) is connected with the digging machine connecting rod (48) on digging machine (47).

2. soil according to claim 1 and underground water high-pressure rotary-spray stir joint in-situ remediation system with shallow-layer, it is special Sign is that the stirring-head (49) includes：Connecting rod (51), main body steel construction (52), drive sprocket (53), hydraulic motor (54), tensioning wheel (55), tooth harrow (56), chain (57), wear-resisting steel disc cutting head (58) and by movable sprocket (59), the main body steel The top of structure (52) is fixed with connecting rod (51), and the upper end of main body steel construction (52) is provided with drive sprocket (53), main body steel The lower end of structure (52) is provided with by movable sprocket (59), drive sprocket (53) and is driven between movable sprocket (59) by chain (57) Connect, be evenly equipped with tooth harrow (56) on chain (57), wear-resisting steel disc cutting head (58), hydraulic motor (54) are fixed with tooth harrow (56) The top of main body steel construction (52) is fixed on, output end and the drive sprocket (53) of hydraulic motor (54) are connected, main body steel Structure (52) is provided with tensioning wheel (55), and tensioning wheel (55) is rotatablely connected with chain (57), and connecting rod (51) is used to connect with digging machine Extension bar (48) is connected.

3. soil according to claim 2 and underground water high-pressure rotary-spray stir joint in-situ remediation system with shallow-layer, it is special Sign is that the connecting rod (51) is directly connected to digging machine connecting rod (48) by hinge pin.

4. soil according to claim 3 and underground water high-pressure rotary-spray stir joint in-situ remediation system with shallow-layer, it is special Sign is, 6~12 groups of tooth harrows (56) are evenly equipped with the chain (57).

5. soil according to claim 4 and underground water high-pressure rotary-spray stir joint in-situ remediation system with shallow-layer, it is special Sign is, 4~6 wear-resisting steel disc cutting heads (58) are provided with every group of tooth harrow (56).