A kind of injection-extraction well formula soil in-situ elution repair systemTechnical field
It the utility model is related to a kind of injection-extraction well formula soil in-situ elution repair system.
Background technology
Soil leaching technology, is to utilize water or other eluents, by the effect such as chelating, extracting, separates contaminated soil groupPoint or the pollutant in soil is transferred to liquid phase, then to technology that the leacheate containing pollutant is handled.The technology is applicable inIn processing heavy metal, radionuclide, cyanide, and half volatile and difficult volatile organic pollution.Soil drenches at presentWash more using the progress of dystopy processing mode.
Utility model content
The purpose of this utility model is influenced using less for current soil in-situ elution technique by hydrogeology, it is intended to is carriedFor a kind of injection-extraction well formula soil in-situ elution repair system.
To reach above-mentioned purpose, the technical solution adopted in the utility model is：A kind of injection-extraction well formula soil in-situ leachingWash repair system, including set gradually from top to bottom ground floor, contaminated soil layer region, water table, impermeable stratum, injectionWell, extraction well, monitoring well, eluent injected system and sewage extracting processing system；The eluent injected system and sewage are taken outPut forward processing system to be located on ground floor, the extraction well is located at contaminated soil layer region center, and the extraction well sequentially passes through groundUntil impermeable stratum, the extraction well extract processing system by pipeline and sewage after surface layer, contaminated soil layer region, water tableSystem connection；The injector well is located at contaminated soil layer region radial direction side, and the injector well is passed through after ground floor until Polluted SoilAt the bottom surface of earth layer region；The monitoring well be located at injector well periphery, the monitoring well pass through ground floor after until water table；InstituteThe upper and lower roam all around the would of updrift side for stating monitoring well water layer direction of groundwater flow located underground is upward.
Further improved as the utility model, the eluent injected system includes eluent injection device, circulationPump, the eluent injection device, circulating pump, injector well pass sequentially through pipeline connection；Injector well connects with eluent injected systemConnect, elution construction in situ is carried out by injecting eluent or water.
Further improved as the utility model, the sewage extracting processing system includes sewage-treatment plant, circulationPump, the extraction well, circulating pump, sewage-treatment plant pass sequentially through pipeline connection；Extraction well connects with sewage extracting processing systemConnect, the soil leachates containing pollutant are extracted and handle discharge, so as to achieve the purpose that to remove pollutant from soil.
Due to the utilization of above-mentioned technical proposal, the utility model has following advantages compared with prior art：According to this realityWith the technical solution of new offer, eluent is injected by injector well, leacheate of the extraction well extraction containing pollutant, reaches removalThe purpose of soil pollutant；Meanwhile carried out using form of construction work in situ, quantities is reduced, it is cost-effective.
Brief description of the drawings
Technical solutions of the utility model are described further below in conjunction with the accompanying drawings：
Attached drawing 1 elutes repair system structure diagram for a kind of injection-extraction well formula soil in-situ；
Attached drawing 2 elutes contaminated soil layer region top view in repair system for a kind of injection-extraction well formula soil in-situ.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the utility model is described in further detail.
A kind of injection-extraction well formula soil in-situ elution repair system structure diagram as shown in attached drawing 1,2；Including fromThe ground floor 1 that is set gradually under, contaminated soil layer region 2, water table 3, impermeable stratum 4, injector well 5, extraction well 6,Monitoring well 7, eluent injected system 8 and sewage extracting processing system 9；Eluent injected system 8 and sewage extracting processing system 9On ground floor 1, extraction well 6 is located at the center of contaminated soil layer region 2, and extraction well 6 sequentially passes through ground floor 1, contaminated soilUntil impermeable stratum 4, extraction well 6 extract processing system 9 with sewage by pipeline 10 and be connected after layer region 2, water table 3；NotePenetrate well 5 and be located at 2 radial direction side of contaminated soil layer region, injector well 5 is passed through after ground floor 1 until 2 bottom surface of contaminated soil layer regionPlace；Monitoring well 7 is located at the periphery of injector well 5, and monitoring well 7 is passed through after ground floor 1 until water table 3；7 water located underground of monitoring wellThe upper and lower roam all around the would of updrift side of 3 direction of groundwater flow of layer is upward；Eluent injected system 8 includes eluent injection device 11, followsRing pump 12, eluent injection device 11, circulating pump 12, injector well 5 pass sequentially through pipeline 10 and connect；Sewage extracts processing system 9Including sewage-treatment plant 13, circulating pump 12, extraction well 6, circulating pump 12, sewage-treatment plant 13 pass sequentially through pipeline 10 and connectConnect.
Extraction well is located at contaminated soil region center, and extracting well depth should be below soil pollution depth until waterproofLayer.Extraction well is connected with sewage extracting processing system, and the soil leachates containing pollutant are extracted and handle discharge, so as to reachThe purpose that pollutant is removed from soil.
Injector well is located at contaminated soil region limit, and injection well depth is basically identical in soil pollution depth.Injector well withEluent injected system connects, and elution construction in situ is carried out by injecting eluent or water.
Monitoring well is located at injector well periphery, on the direction of groundwater flow upstream and downstream direction of place region.For monitoringRepairing construction to neighboring area influence on groundwater, the underground water if discovery elution directive/guide pollutant extends influence, made by monitoring wellUsed for extraction well, control contamination.
Extraction well, injector well, monitoring well the choice of diameter and spacing need to according to place soil permeability, groundwater occurrence amount,Groundwater level and flow direction and combination extracting amount and injection volume design determine.
The technical solution provided according to the present invention, injects eluent, leaching of the extraction well extraction containing pollutant by injector wellWashing lotion, achievees the purpose that to remove soil pollutant；Meanwhile carried out using form of construction work in situ, quantities is reduced, is saved intoThis.
It the above is only the concrete application example of the utility model, do not form any limit to the scope of protection of the utility modelSystem；All technical solutions formed using equivalent transformation or equivalent replacement, all fall within the utility model rights protection scope itIt is interior.