CN105032916A - In-situ injection-extraction-water replenishing circulatory disposal system for organic contaminated soil and groundwater and combined remediation method - Google Patents
In-situ injection-extraction-water replenishing circulatory disposal system for organic contaminated soil and groundwater and combined remediation method Download PDFInfo
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Abstract
The invention discloses an in-situ injection-extraction-water replenishing circulatory disposal system for organic contaminated soil and groundwater and a combined remediation method. The system is consist of an injection well, an extraction well, a water replenishing well, a water treatment facility, a dispensing facility. The method comprises the following steps: extracting a pollution source or groundwater in a seriously polluted area to the ground for processing, then using the processed groundwater as a preparation drug or as replenished water to be directly injected to the underground, and injecting the drug into the underground pollution plume area through the injection well. The system and the method are used for processing the organic contaminated soil and groundwater in situ and have the advantages of being small in disturbance, environmental-friendly, short in remediation cycle and wide in range of application and has no secondary pollution.
Description
Technical field
The present invention relates to in-situ injection-extracting-moisturizing circulation disposal system and the combined remediation method of a kind of organic material contaminated soil and underground water.
Background technology
Soil and groundwater is the basic eco-environmental elements forming natural ecosystems, is also the material base that the mankind depend on for existence and development.Along with the aggravation of industrial pollution and agrochemical substances widely use, after particularly the chemical industry, medicine, agricultural chemicals etc. of surrounding city pollute producer's resettlement, leave a large amount of discarded places.The underground in these places and underground water are often by Organic Pollution, and in soil and groundwater environment, the existence of polluter may produce serious harmful effect to neighbouring human body and surrounding enviroment, can jeopardize the life security of people time serious.In April, 2004, in the subway engineering construction process of the Song Jia village, Beijing, although construction party has put on breathing mask in time three workmans of site operation.But when heatable adobe sleeping platform is dug to 5 meters of depths, three people all occur malaise symptoms, fortunately workman is delivered to hospital's treatment in time, just avoids the generation of tragedy.Learn through investigation, this region originally belonged to Beijing insecticide factory afterwards.
In general, in soil and groundwater, typical organic pollution comprises benzene homologues, organohalogen compounds, petroleum hydrocarbon, agricultural chemicals and Polychlorinated biphenyls etc.These pollutants are all often the dangerous refuses of high carcinogenic, therefore must it may be necessary rational technological means to repair these contaminated soil and groundwaters, thus effectively protect health and stop Ecological Environment Risk.
Divide by know-why, the pollution remediation technology of soil and groundwater comprises peripheral doses, chemical redemption and biological prosthetic three major types.Soil gas extracting, the technology such as process, surfactant strengthening free recovery, heterogeneous extracting mutually that pumps belong to peripheral doses field; The technology such as chemical oxidation and electronation belongs to chemical redemption field; The technology such as bio-ventilation, enhance biological treatment then belongs to biological prosthetic field.
Divide by repair mode, the pollution remediation technology of soil and groundwater comprises the mode of in-situ immobilization, showering and original position-peculiar smell combine d bioremediation; If take the mode of showering, then the air of periphery can be caused in digging process to suffer secondary pollution.In addition, the organic pollution of underground, under the effect of microorganism, changes into the cacodorous product of tool, if direct excavation, can affect the normal life of nearby residents.
Chemical oxidation techniques injects oxidant in soil and groundwater, remove target contaminant by the chemistry redox reaction occurred between pollutant and the oxidant of injection or change the existing forms of pollutant, thus reach the object of reparation, its destination media is soil and groundwater, target contaminant is mainly organic contamination, it has the advantages such as repair time is short, cost is low, effective, workable, has good application prospect in the in-situ immobilization field of organic material contaminated soil; Patent CN102836867A describes the in situ chemical oxidation restorative procedure of a kind of chlorohydrocarbon contaminated soil and underground water.The method, in the mode of permeable reactive barrier, uses potassium permanganate as oxidizer treatment underground chlorinated hydrocarbon contaminants.But it is long that this permeable reactive barrier technology generally administers the cycle, and general underground water regimen is complicated, and pollutant distribution is unbalanced, is difficult to avoid occurring oxidant skewness or the insufficient problem causing contaminant removal efficiency low of oxidant diffusion.In addition, the price comparison of potassium permanganate is high, oxidizing potential is not high, and thus its scope of application is more limited.Patent CN103480645A describes injection device for chemical soil remediation and arranging system thereof.The board-plugging device that the method uses is the machinery processing coastal area soft foundation in building trade, the flat board of this Patent design might not be squeezed into soft foundation, also just may not can obtain good injection effect even if can squeeze into.In addition, general contaminated site is not soft foundation, and especially generally there are hardened ground and pool slag basis in industrial pollution place, cannot use board-plugging device operation.Therefore, the moral conduct of this patent is poor.
The based technique for in-situ remediation of soil and groundwater is repair mode conventional in prior art, have easy to operate, the advantage of the low and wide accommodation of cost, it mainly utilizes the adsorbing medium that infiltration coefficient is higher that organic pollution in underground water is passed through chemistry or physics mode process, and treatment media known is at present as not high in zeolite, active carbon and compounded mix treatment effect, cannot fully decompose the organic pollution of organic pollution particularly difficult degradation, removal efficiency is lower; And in-situ immobilization also to face remediation efficiency low, also there is the risk that chemical redemption agent is polluted in the shortcoming that the cycle is long simultaneously.
The showering then applied range of soil and groundwater, treatment process is flexible, and treatment effect is good, and treatment cycle is short, and can adopt specific treatment process for specific pollutant, specific aim is stronger; But the groundwater abstraction of long-time large discharge easily causes land subsidence, and showering cost is high, is difficult to large-scale application.
Dystopy-based technique for in-situ remediation is then applied less at present, also the above-mentioned coupling mode of less research in prior art, coupling repair mode known at present also exist design technology fail embody both coordinate, design is only the problem of both simple superposition, and actual processing effect fails to reach the object of 1+1>2;
Therefore, the present invention is directed to the feature of organic pollution, propose a kind of removal efficiency high, treatment effect is good, economically viable soil and groudwater remediation technology.
Summary of the invention
The present invention seeks to for the deficiencies in the prior art and defect, provide in-situ injection-extracting-moisturizing circulation disposal system and the method for a kind of organic material contaminated soil and underground water, carry out the in-situ injection-extracting-moisturizing combine d bioremediation of contaminated site, reduce the impact of constructing and existing place being used, reduce the secondary pollution that repair process causes surrounding enviroment and resident.The recoverable Organic Pollution factor of the present invention comprises most of volatile organic matter and the part semi-volatile organic matters such as chlorinated solvents, benzene homologues, petroleum hydrocarbon, phenyl amines, and part polycyclic aromatic hydrocarbon and organo-chlorine pesticide.
For achieving the above object, the technical solution used in the present invention is:
In-situ injection-extracting-moisturizing circulation the disposal system of a kind of organic material contaminated soil and underground water, it comprises recharge well, injector well, pharmacy facility and extracting treatment system, wherein extracting treatment system comprises underground extraction well and sewage disposal system on the ground, the sewage disposal system of described ground comprises extraction pump and water processing establishment, water processing establishment is connected with extraction well with pipeline by extraction pump, the underground water polluted is transported in water processing establishment by extraction pump and processes from extraction well, and Organic Chemicals In Groundwater is degraded; Described recharge well is arranged in pollution range, and recharge well is preferably separated by between adjacent two recharge wells 10-30 rice, and ground, the concrete visual field water yield is enriched degree and arranged; Injector well is arranged according to contaminated sites distribution, pollution concentration is higher, well spacing is less, often organize the injector well (bunch well) that injector well evenly can arrange multiple different depth, the injector well degree of depth according to strata condition and can pollute the different degree of depth of distribution employing, as selected to arrange injector well respectively at the place such as silt, silty sand ground; Extraction well is mainly arranged on the middle and lower reaches of pollution sources and seriously polluted area or Polluted area Groundwater flow path direction, can arrange multiple, and extraction well well spacing is at about 10 ~ 20m.
Described water processing establishment comprises two delivery ports, one of them delivery port is connected with recharge well by booster pump with recharge well, another delivery port is communicated with pharmacy facility, pharmacy facility delivery port is then communicated with injector well, the up to standard water part of polluted underground water after the process of extracting treatment system is qualified is injected into recharge of groundwater in recharge well, a part enters in pharmacy facility and is mixed to get reparation water with renovation agent, repairs water and is repaired by injector well injection soil horizon and the organic pollution of water table to soil and groundwater.
Described water processing establishment comprises the pre-filtering pond connected successively, oxidation pond, hydrolysis acidification pool, BAF, membrane biological reaction pond, advanced oxidation pond, adsorption tank and sterilization pool, the filter that wherein said pre-filtering pond can select quartz sand filter tank, fibre bundle filtration pond, accurate filter etc. conventional, preferred filters filter sizes is greater than 25 microns; Described oxidation pond can adopt Fe-C micro electrolysis pond, Fenton oxidation pond or potassium permanganate oxidation pond; Described advanced oxidation pond adopts catalytic wet oxidation treatment system, and temperature during oxidation is greater than 180 DEG C, and pressure is greater than 20MPa; The preferred activated carbon adsorption tank of described adsorption tank or resin adsorption pond; Described sterilization pool adopts hypochlorous acid, ozone or ultraviolet disinfection;
The renovation agent that said system adopts comprises oxidant, eluant, eluent, surfactant, catalyst, sustained release agent and acid, and wherein the mass fraction of above-mentioned each component is: oxidant 50-80 part, eluant, eluent 10-15 part, surfactant 1-5 part, catalyst 0.1-0.5 part, sustained release agent 2-6 part, sour 0.5-1 part; Wherein oxidant selects hydrogen peroxide, hypochlorite, permanganate, any one or its combination in persulfate, and the organic matter in soil and groundwater can be carried out oxidation Decomposition by it; Eluant, eluent select low mass molecule alcohol as in ethanol or carboxylic acid any one, utilize eluant, eluent to be come at the organic pollution wash-out place of sticking in soil or underground clay organic dissolubility, the existence changing organic pollution can improve organic pollution treatment effect greatly; The preferred biosurfactant of surfactant, as rhamnolipid, saponin, alkyl polyglycoside etc., it can improve the surface-active of organic pollution, reduces the adhesive force between organic pollution and soil particle, is easy to wash-out; The molysite that catalyst choice is water-soluble or zinc salt, for the catalytic oxidation of organic pollution; Sustained release agent selects stearic acid or paraffin, and it can be coated on oxidant surface, makes oxidizing performance slow releasing, is conducive to the oxidation susceptibility that oxidant keeps long-acting; Hydrochloric acid or sulfuric acid are selected in acid, for regulating the pH of underground water, making it under mildly acidic conditions, can improve the oxidation susceptibility of oxidant.
In described reparation water, the concentration of renovation agent is 5-10g/L, preferred 6g/L.
In-situ injection-extracting-moisturizing circulation combined remediation method of organic material contaminated soil and underground water, is characterized in that comprising following steps:
(1) by the groundwater use extraction pump of pollution sources or seriously polluted area from extraction well extracting to ground;
(2) be transported in water processing establishment by underground water, successively after pre-filtering, oxidation, anaerobic hydrolysis, Aerobic Process for Treatment and film biological treatment, then carry out advanced treating, wherein advanced treating comprises advanced oxidation process, degree of depth adsorption treatment and disinfecting;
(3) step (2) is processed underground water part up to standard to be transported in pharmacy facility and to mix with renovation agent, obtain the reparation water mixed, unnecessary underground water up to standard injects underground by recharge well;
(4) the reparation water containing finite concentration renovation agent is injected underground by injector well.
The renovation agent that said method adopts comprises oxidant, eluant, eluent, surfactant, catalyst, sustained release agent and acid, and wherein the mass fraction of above-mentioned each component is: oxidant 50-80 part, eluant, eluent 10-15 part, surfactant 1-5 part, catalyst 0.1-0.5 part, sustained release agent 2-6 part, sour 0.5-1 part; Wherein oxidant selects hydrogen peroxide, hypochlorite, permanganate, any one or its combination in persulfate, and the organic matter in soil and groundwater can be carried out oxidation Decomposition by it; Eluant, eluent select low mass molecule alcohol as in ethanol or carboxylic acid any one, utilize eluant, eluent to be come at the organic pollution wash-out place of sticking in soil or underground clay organic dissolubility, the existence changing organic pollution can improve organic pollution treatment effect greatly; The preferred biosurfactant of surfactant, as rhamnolipid, saponin, alkyl polyglycoside etc., it can improve the surface-active of organic pollution, reduces the adhesive force between organic pollution and soil particle, is easy to wash-out; The molysite that catalyst choice is water-soluble or zinc salt, for the catalytic oxidation of organic pollution; Sustained release agent selects stearic acid or paraffin, and it can be coated on oxidant surface, makes oxidizing performance slow releasing, is conducive to the oxidation susceptibility that oxidant keeps long-acting; Hydrochloric acid or sulfuric acid are selected in acid, for regulating the pH of underground water, making it under mildly acidic conditions, can improve the oxidation susceptibility of oxidant.
The concentration of repairing renovation agent described in water is 5-10g/L, preferred 6g/L.
In-situ injection-extracting-moisturizing circulation the disposal system of organic material contaminated soil of the present invention and underground water and method are applicable to the pollution of the soil and groundwater that the various leakage that produced by the reparation, particularly organic agricultural chemicals of organic pollution contaminated soil and underground water, petroleum refining and the industry such as Coal Chemical Industry, pharmacy or accident cause;
The present invention has following beneficial effect:
(1) injection-extracting of the present invention-moisturizing circulation disposal system, energy accelerating ground water flowing velocity and renovation agent diffusion velocity, improve and dispose effect, moisturizing is conducive to retentively descending water level balance, prevent the surface collapse that groundwater level fluctuation and groundwater abstraction cause, another important function of moisturizing is the speed that maintains Groundwater Flow for the less soil layer of infiltration coefficient, and appropriate moisturizing can ensure water velocity, ensures mobility and the diffusivity of renovation agent; Extracting underground water then can improve the mobility of underground water, is also conducive to flowing and the diffusion of renovation agent; Injection renovation agent is injected into underground and then can significantly improves removing and degrading of organic contaminants in soil, also the extracting amount of underground water is greatly reduced, with only adopt compared with the process of extracting mode, treatment system of the present invention and method can reduce the extracting amount of 50%-90%, with inject merely compared with renovation agent reparation, the present invention then can reduce the renovation agent use amount of 50-60%; Disposal system of the present invention and method not only obviously strengthen disposal amount and the disposing capacity of pollutant, can reduce clean extracting amount or injection volume simultaneously, shorten the disposal cycle.
(2) the present invention is by building the injector well of different depth, realizes the orientation reparation of polluting soil layer, makes reparation have more specific aim, reduces renovation agent loss, shortens the disposal cycle.
(3) disturb little.The present invention, by the mode of in-situ treatment, substantially can not affect the use in place, thus can carry out repair at any time, can not be very strict to the requirement of repairing efficiency yet.
(4) applied widely: injection-extracting of the present invention-moisturizing circulation disposal system is applicable to all kinds of organic contamination place and disposes requirement.
(5) non-secondary pollution.The present invention, by the mode of in-situ treatment, can avoid the impact of distributing the periphery masses causing toxic gas or stench because of excavation organic material contaminated soil.
(6) use extensively.The renovation agent that the present invention uses has very strong oxidisability, and environmental pollution is little, can be widely used in the in-situ immobilization of various organic material contaminated soil and underground water.
(7) waste water recycling.This device comprises a set of water processing establishment, after processing the polluted underground water extracted, can recycle, be applicable to very much the reparation not having sewage network contaminated site.
(8) water processing establishment that adopts of the present invention is for the characteristic of organic pollution, adopt novel strengthening organic matter treatment process, organic concentration in water body can be reduced greatly, organic pollution is thoroughly degraded, it has efficiently, treatment effect fast.
Accompanying drawing explanation
Fig. 1 represents that the present invention injects the-schematic diagram of extracting-moisturizing circulation disposal system;
Fig. 2 represents the process chart of water processing establishment of the present invention;
Fig. 3 represents the floor plan of injector well of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.
As shown in Figure 1, in-situ injection-extracting-moisturizing circulation the disposal system of organic material contaminated soil of the present invention and underground water comprises recharge well 1, injector well 2, pharmacy facility 3 and extracting treatment system, wherein extracting treatment system comprises underground extraction well 4 and sewage disposal system on the ground, the sewage disposal system of described ground comprises extraction pump 5 and water processing establishment 6, water processing establishment 6 is connected with extraction well 4 with pipeline by extraction pump 5, the underground water polluted is transported in water processing establishment 6 by extraction pump 5 and processes from extraction well 4, Organic Chemicals In Groundwater is degraded, described recharge well 1 is arranged in pollution range, the middle and upper reaches of underground water in preferred pollution range, recharge well 1 can arrange more than 2 or 2 along the water (flow) direction of underground water, distance between adjacent two recharge wells can be enriched degree according to visual field groundwater run off and arrange, 10-30 rice of being preferably separated by between adjacent two recharge wells, injector well 2 arranges many groups along the water (flow) direction of underground water, interval between two adjacent groups increases (as shown in Figure 3) gradually along water (flow) direction, often organize injector well and multiple injector well is evenly set perpendicular on the cross section of water (flow) direction, well spacing is arranged according to contaminated sites distribution, pollution concentration is higher, well spacing is less, often organize the injector well (bunch well) that injector well evenly can arrange multiple different depth, the injector well degree of depth according to strata condition and can pollute the different degree of depth of distribution employing, as selected to arrange injector well respectively at the place such as silt, silty sand ground, extraction well is mainly arranged on the middle and lower reaches of pollution sources and seriously polluted area or Polluted area Groundwater flow path direction, and well spacing is at about 10 ~ 20m.
Described water processing establishment 6 comprises two delivery ports, one of them delivery port is connected with recharge well 1 by booster pump 7 with recharge well 1, another delivery port is communicated with pharmacy facility 3, pharmacy facility 3 delivery port is then communicated with injector well 2, the up to standard water part of polluted underground water after the process of extracting treatment system is qualified is injected into recharge of groundwater in recharge well 1, a part enters in pharmacy facility 3 and is mixed to get reparation water with renovation agent, and reparation water injects soil horizon by injector well 2 and the organic pollution of water table to soil and groundwater is repaired.
As shown in Figure 2, described water processing establishment 6 comprises the pre-filtering pond connected successively, oxidation pond, hydrolysis acidification pool, BAF, membrane biological reaction pond, advanced oxidation pond, adsorption tank and sterilization pool, the filter that wherein said pre-filtering pond can select quartz sand filter tank, fibre bundle filtration pond, accurate filter etc. conventional, preferred filters filter sizes is greater than 25 microns; Described oxidation pond can adopt Fe-C micro electrolysis pond, Fenton oxidation pond or potassium permanganate oxidation pond; Described advanced oxidation pond adopts catalytic wet oxidation treatment system, and temperature during oxidation is greater than 180 DEG C, and pressure is greater than 20MPa; The preferred activated carbon adsorption tank of described adsorption tank or resin adsorption pond; Described sterilization pool adopts hypochlorous acid, ozone or ultraviolet disinfection.
The renovation agent that said system adopts comprises following component: oxidant, eluant, eluent, surfactant, catalyst, sustained release agent and acid, and wherein the mass fraction of above-mentioned each component is: oxidant 50-80 part, eluant, eluent 10-15 part, surfactant 1-5 part, catalyst 0.1-0.5 part, sustained release agent 2-6 part, sour 0.5-1 part; Wherein oxidant selects hydrogen peroxide, hypochlorite, permanganate, any one or its combination in persulfate, and the organic matter in soil and groundwater can be carried out oxidation Decomposition by it; Eluant, eluent select low mass molecule alcohol as in ethanol or carboxylic acid any one, utilize eluant, eluent to be come at the organic pollution wash-out place of sticking in soil or underground clay organic dissolubility, the existence changing organic pollution can improve organic pollution treatment effect greatly; The preferred biosurfactant of surfactant, as rhamnolipid, saponin, alkyl polyglycoside etc., it can improve the electric charge size of organic pollution, reduces the adhesive force between organic pollution and soil particle, is easy to wash-out; The molysite that catalyst choice is water-soluble or zinc salt, for the catalytic oxidation of organic pollution; Sustained release agent selects stearic acid or paraffin, and it can be coated on oxidant surface, makes oxidizing performance slow releasing, is conducive to the oxidation susceptibility that oxidant keeps long-acting; Hydrochloric acid or sulfuric acid are selected in acid, for regulating the pH of underground water, making it under mildly acidic conditions, can improve the oxidation susceptibility of oxidant.
In described reparation water, the concentration of renovation agent is 5-10g/L, preferred 6g/L.
Adopt above-mentioned repair system to carry out soil and groudwater remediation, mainly adopt following steps:
(1) by the groundwater use extraction pump of pollution sources or seriously polluted area from extraction well 4 extracting to ground;
(2) underground water that extracting comes is transported in water processing establishment 6, successively after pre-filtering, oxidation, anaerobic hydrolysis, Aerobic Process for Treatment and film biological treatment, carry out advanced treating again, wherein advanced treating comprises advanced oxidation process, degree of depth adsorption treatment and disinfecting;
(3) step (2) is processed underground water part up to standard to be transported in pharmacy facility 4 and to mix with renovation agent, obtain the reparation water mixed, unnecessary underground water up to standard injects underground by recharge well 1;
(4) the reparation water containing finite concentration renovation agent is injected underground by injector well 2, underground water is repaired, until the organic pollution in soil and groundwater is completely removed.
The renovation agent that said method adopts comprises the components such as oxidant, eluant, eluent, surfactant, catalyst, sustained release agent and acid, and its concrete constitute and function is described above;
In-situ injection-extracting combine d bioremediation the system and method for organic material contaminated soil of the present invention and underground water is applicable to various by the reparation of organic pollution contaminated soil and underground water, the particularly pollution of soil and groundwater that causes of the leakage that produces of organic agricultural chemicals, petroleum refining and the industry such as Coal Chemical Industry, pharmacy or accident, the specific embodiment below for adopting disposal system of the present invention and the various soil and groundwater of method process to pollute:
embodiment 1
Certain insecticide factory's soil pollutant is ortho-aminotoluene, parachlorotoluene, 1,2-dichloroethanes, and pollution concentration is 1357mg/kg, 864mg/kg, 389mg/kg.Ortho-aminotoluene, parachlorotoluene, 1,2-dichloroethanes in underground water, pollution concentration is respectively 15mg/L, 11mg/L, 2mg/L.Inject the reparation water that renovation agent concentration is 5g/L every day.Accumulative injection is after 80 days, ortho-aminotoluene, parachlorotoluene, 1 in soil, the concentration of 2-dichloroethanes drops to 2.3mg/kg, 1.5mg/kg, 0.6mg/kg respectively, in underground water, the concentration of ortho-aminotoluene, parachlorotoluene, 1,2-dichloroethanes drops to 0.009mg/L, 0.007mg/L, 0.005mg/L respectively.All indexs reach site remediation desired value.
embodiment 2
Certain chemical plant underground is polluted by trichloro-ethylene, and the concentration in soil is 1327mg/kg, and the concentration in underground water is 25mg/L.Inject the reparation water that renovation agent concentration is 10g/L every day.Accumulative injection is after 120 days, and the concentration in soil drops to 3.5mg/kg, and the concentration in underground water drops to 0.011mg/L, reaches the reparation target of expection.
embodiment 3
Certain chemical plant underground is polluted by benzene homologues, and the concentration in soil is 2560mg/kg, and the concentration in underground water is 76mg/L.First inject the reparation water that 2 renovation agent concentration is 6g/L every day.Accumulative injection is after 95 days, and the concentration in soil drops to 5.2mg/kg, and the concentration in underground water drops to 0.008mg/L, reaches the reparation target of expection.
embodiment 4
Certain insecticide factory's underground is polluted by TPH, and the concentration in soil is 1340mg/kg, and the concentration in underground water is 39mg/L.Every day, 2 renovation agent concentration were the reparation water of 7g/L.Accumulative injection is after 75 days, and the concentration in soil drops to 12mg/kg, and the concentration in underground water drops to 0.4mg/L, reaches the reparation target of expection.
embodiment 5
Certain chemical plant underground is polluted by ortho-xylene, and the concentration in soil is 570mg/kg, and the concentration in underground water is 16mg/L.Inject the reparation water that renovation agent concentration is 9g/L every day.Accumulative injection is after 55 days, and the concentration in soil drops to 4mg/kg, and the concentration in underground water drops to 0.003mg/L, reaches the reparation target of expection.
embodiment 6
Certain chemical plant underground is polluted by meta-xylene, and the concentration in soil is 2142mg/kg, and the concentration in underground water is 53mg/L.Inject the reparation water that 1 renovation agent concentration is 5.5g/L every day.Accumulative injection is after 110 days, and the concentration in soil drops to 0.6mg/kg, and the concentration in underground water drops to 0.012mg/L, reaches the reparation target of expection.
That wherein implements the renovation agent of 1-3 employing consists of 80 parts, hydrogen peroxide (weight, lower same), ethanol 10 parts, rhamnolipid 1 part, zinc chloride 0.1 part, stearic acid 2 parts, 0.5 part, the sulfuric acid that concentration is 27.5%; The renovation agent that embodiment 4-6 adopts consist of powder clorox 50 parts (weight, lower with), acetic acid 10 parts, saponin 3 parts, 0.2 part, ferrous sulfate, 2 parts, paraffin, hydrochloric acid 0.5 part; Above-mentioned renovation agent is joined repair in water and be injected into by injector well the reparation that underground water and soil is carried out in underground.
It should be noted that; although the present invention's openly preferred embodiment; but they are not for limiting the present invention; any those skilled in the art; without departing from the scope of the present invention; various changes can be made and adjustment, and what therefore protection scope of the present invention should define with the claims of the application is as the criterion.
Claims (8)
1. in-situ injection-extracting-moisturizing circulation the disposal system of an organic material contaminated soil and underground water, comprise recharge well, injector well, pharmacy facility and extracting treatment system, wherein extracting treatment system comprises underground extraction well and sewage disposal system on the ground, the sewage disposal system of described ground comprises extraction pump and water processing establishment, water processing establishment is connected with extraction well with pipeline by extraction pump, and the underground water of pollution is transported in water processing establishment by extraction pump and processes from extraction well; Described recharge well is arranged in pollution range, and recharge well is preferably separated by between adjacent two recharge wells 10-30 rice, and ground, the concrete visual field water yield is enriched degree and arranged; Injector well is arranged according to contaminated sites distribution, pollution concentration is higher, stratum permeability is poorer, then well spacing is less, often organize the injector well (bunch well) that injector well evenly can arrange multiple different depth, the injector well degree of depth according to strata condition and can pollute the different degree of depth of distribution employing, as selected to arrange injector well respectively at the place such as silt, silty sand ground; Extraction well is mainly arranged on the middle and lower reaches of pollution sources and seriously polluted area or Polluted area Groundwater flow path direction, can arrange multiple, and extraction well well spacing is at about 10 ~ 20m; Described water processing establishment comprises two delivery ports, and one of them delivery port is communicated with by booster pump with recharge well, and another delivery port is communicated with pharmacy facility water inlet, and pharmacy facility delivery port is then communicated with injector well; Described water processing establishment comprises the pre-filtering pond connected successively, oxidation pond, hydrolysis acidification pool, BAF, membrane biological reaction pond, advanced oxidation pond, adsorption tank and sterilization pool; Renovation agent is comprised in described pharmacy facility, described renovation agent comprises oxidant, eluant, eluent, surfactant, catalyst, sustained release agent and acid, and in renovation agent, the mass fraction of each component is: oxidant 50-80 part, eluant, eluent 10-15 part, surfactant 1-5 part, catalyst 0.1-0.5 part, sustained release agent 2-6 part, sour 0.5-1 part.
2. disposal system as claimed in claim 1, wherein said oxidant selects any one or its combination in hydrogen peroxide, hypochlorite, permanganate, persulfate, and described eluant, eluent selects low mass molecule alcohol or low molecular carboxylic acid; Described surfactant is biosurfactant; The molysite that described catalyst choice is water-soluble or zinc salt; Described sustained release agent selects stearic acid or paraffin; Hydrochloric acid or sulfuric acid are selected in described acid.
3. disposal system as claimed in claim 1, quartz sand filter tank, fibre bundle filtration pond or accurate filter are selected in wherein said pre-filtering pond.
4. disposal system as claimed in claim 1, described oxidation pond adopts Fe-C micro electrolysis pond, Fenton oxidation pond or potassium permanganate oxidation pond.
5. disposal system as claimed in claim 1, described advanced oxidation pond adopts catalytic wet oxidation treatment system.
6. disposal system as claimed in claim 1, described adsorption tank is activated carbon adsorption tank or resin adsorption pond.
7. disposal system as claimed in claim 1, described sterilization pool adopts hypochlorous acid, ozone or ultraviolet disinfection.
8. adopt the combined remediation method of the disposal system of any one of claim 1-7, it is characterized in that comprising following steps:
(1) by the groundwater use extraction pump of pollution sources or seriously polluted area from extraction well extracting to ground;
(2) underground water of extracting in step (1) is transported in water processing establishment, successively after pre-filtering, oxidation, anaerobic hydrolysis, Aerobic Process for Treatment and film biological treatment, carry out advanced treating again, wherein advanced treating comprises advanced oxidation process, degree of depth adsorption treatment and disinfecting;
(3) step (2) is processed underground water part up to standard to be transported in pharmacy facility and to mix with renovation agent, obtain the reparation water mixed, unnecessary underground water up to standard injects underground by recharge well;
(4) the reparation water containing finite concentration renovation agent in step (3) is injected underground by injector well.
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| CN106673173A (en) * | 2017-02-22 | 2017-05-17 | 上海广联环境岩土工程股份有限公司 | In-situ oxidizing well for treating chlorinated hydrocarbon-polluted underground water |
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| CN107138517A (en) * | 2017-06-20 | 2017-09-08 | 上海老港废弃物处置有限公司 | A kind of oil-contaminated soil processing unit of utilization alcohol fermentation and high-level oxidation technology |
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| CN108568449A (en) * | 2018-03-22 | 2018-09-25 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of contaminated soil in-situ repairing device |
| CN108787730A (en) * | 2018-08-07 | 2018-11-13 | 北京伦至环境科技有限公司 | One kind being suitable for thin solum organic pollution prosthetic device and its application method |
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| CN109530420A (en) * | 2018-12-12 | 2019-03-29 | 华南师范大学 | A kind of soil in-situ repair system and its restorative procedure |
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| CN110270585A (en) * | 2018-03-13 | 2019-09-24 | 川尚股份有限公司 | Pollute the processing method of mixture |
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| CN110387242A (en) * | 2019-06-27 | 2019-10-29 | 浙江工商大学 | A kind of potassium permanganate sustained-release agent and its preparation method and application |
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| CN110451685A (en) * | 2019-08-02 | 2019-11-15 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队 | Combined restoration system and method for removing organic pollution in underground water in mine |
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| CN111069260A (en) * | 2020-01-13 | 2020-04-28 | 中新曜昂环境修复(江苏)有限公司 | In-situ treatment of non-aqueous contaminants in soil and groundwater |
| CN111151570A (en) * | 2020-02-11 | 2020-05-15 | 南京怡可帮生态环境科技有限公司 | Development and application of rapid and efficient in-situ circulating repair system for organic pollution active oxygen of field soil and underground water |
| CN111495948A (en) * | 2020-04-13 | 2020-08-07 | 上海市城市建设设计研究总院（集团）有限公司 | Contaminated site risk management and control cooperative remediation system based on functional separation |
| CN111589850A (en) * | 2020-04-07 | 2020-08-28 | 南昌航空大学 | Low-permeability multiphase extraction well spacing system and extraction method thereof |
| CN111687202A (en) * | 2020-06-28 | 2020-09-22 | 天津渤化环境修复股份有限公司 | In-situ reuse method and system for underground water |
| CN112159026A (en) * | 2020-08-18 | 2021-01-01 | 南京中微纳米功能材料研究院有限公司 | Treatment method for industrial sewage difficult to degrade |
| CN112624508A (en) * | 2020-12-18 | 2021-04-09 | 武汉理工大学 | Immobilized enzyme-based slow-release Fenton-like system and method for in-situ remediation of groundwater pollution by using same |
| CN112666338A (en) * | 2020-12-16 | 2021-04-16 | 杨玲 | Fixed soil pollution real-time monitoring device |
| CN112872022A (en) * | 2021-03-15 | 2021-06-01 | 中国石油化工股份有限公司 | Method for in-situ remediation of petroleum organic polluted site |
| CN112897766A (en) * | 2021-01-18 | 2021-06-04 | 张宝成 | Ecological prosthetic devices of eutrophic water |
| CN113149265A (en) * | 2021-03-19 | 2021-07-23 | 广东工业大学 | Device and method for ex-situ remediation of polluted underground water |
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| CN113695369A (en) * | 2021-11-01 | 2021-11-26 | 北京高能时代环境技术股份有限公司 | Method for in-situ remediation of petroleum hydrocarbon contaminated soil through multi-technology coupling |
| CN113717732A (en) * | 2021-08-23 | 2021-11-30 | 中国矿业大学 | Coking industry brown land repairing agent, preparation method and repairing method |
| CN113860662A (en) * | 2021-11-04 | 2021-12-31 | 中国石油化工股份有限公司 | Underground water circulating well structure, repairing system and method |
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| CN114393018A (en) * | 2022-01-14 | 2022-04-26 | 生态环境部南京环境科学研究所 | Underground water circulating treatment method of in-situ reduction-extraction oxidation |
| CN114472498A (en) * | 2022-01-28 | 2022-05-13 | 杰瑞环保科技有限公司 | In-situ remediation method and system suitable for petroleum hydrocarbon contaminated site |
| CN114751472A (en) * | 2022-05-12 | 2022-07-15 | 东南大学 | Underground water circulating well device for in-situ remediation of contaminated site and remediation method |
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| CN116040712A (en) * | 2023-02-14 | 2023-05-02 | 中检西北生态技术(陕西)有限公司 | Multistage environment-friendly restoration treatment device and method for polluted underground water |
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| CN105689384A (en) * | 2016-02-02 | 2016-06-22 | 深圳粤鹏环保技术股份有限公司 | Oxidizing agent for degrading organic contaminated soil of coking plant and use method |
| CN105860982A (en) * | 2016-05-19 | 2016-08-17 | 江苏天晟环境科技有限公司 | In-situ oxidation medicine and pollution soil in-situ oxidation remediation method |
| CN107774703A (en) * | 2016-08-25 | 2018-03-09 | 多拉诺瓦公司 | For system and method to impurely descending matrix progress repair process and application thereof |
| CN106348418A (en) * | 2016-09-12 | 2017-01-25 | 中节能大地环境修复有限公司 | In-situ chemical-biological combined restoration method of chromium polluted underground water |
| CN106495318A (en) * | 2016-11-14 | 2017-03-15 | 南京大学 | A kind of permeating reaction wall system of utilization reinforced anaerobic biotechnology in-situ remediation of underground water petrochina hydrocarbon and method |
| CN106495318B (en) * | 2016-11-14 | 2019-08-06 | 南京大学 | A kind of permeating reaction wall system and method using petroleum hydrocarbon in reinforced anaerobic biotechnology in-situ remediation of underground water |
| CN106673173A (en) * | 2017-02-22 | 2017-05-17 | 上海广联环境岩土工程股份有限公司 | In-situ oxidizing well for treating chlorinated hydrocarbon-polluted underground water |
| CN106914482A (en) * | 2017-03-09 | 2017-07-04 | 上海广联环境岩土工程股份有限公司 | The in-situ remediation system of contaminated soil and underground water |
| CN107020297A (en) * | 2017-05-27 | 2017-08-08 | 北京高能时代环境技术股份有限公司 | A kind of contaminated soil, underground water reaction in-situ band repair system and restorative procedure |
| CN107138517A (en) * | 2017-06-20 | 2017-09-08 | 上海老港废弃物处置有限公司 | A kind of oil-contaminated soil processing unit of utilization alcohol fermentation and high-level oxidation technology |
| CN107159697A (en) * | 2017-07-24 | 2017-09-15 | 河北煜环环保科技有限公司 | A kind of organic polluted soil and groundwater remediation method and medicament |
| CN108002468A (en) * | 2017-11-14 | 2018-05-08 | 中电建水环境治理技术有限公司 | The method and system of polluted underground water are repaired using radial pattern arrangement horizontal transverse-pipe |
| CN108114970A (en) * | 2017-12-21 | 2018-06-05 | 永清环保股份有限公司 | A kind of contaminated soil original position thermal desorption repair system and method |
| CN110270585A (en) * | 2018-03-13 | 2019-09-24 | 川尚股份有限公司 | Pollute the processing method of mixture |
| CN108568449A (en) * | 2018-03-22 | 2018-09-25 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of contaminated soil in-situ repairing device |
| CN108787730A (en) * | 2018-08-07 | 2018-11-13 | 北京伦至环境科技有限公司 | One kind being suitable for thin solum organic pollution prosthetic device and its application method |
| CN108787730B (en) * | 2018-08-07 | 2024-01-30 | 北京伦至环境科技有限公司 | Organic pollutant repairing device suitable for shallow soil and application method of organic pollutant repairing device |
| CN109332369A (en) * | 2018-10-19 | 2019-02-15 | 大庆三宝环保科技有限公司 | Repair system and technique in a kind of petroleum hydrocarbon contaminated soil, underground water |
| CN109530420A (en) * | 2018-12-12 | 2019-03-29 | 华南师范大学 | A kind of soil in-situ repair system and its restorative procedure |
| CN109675922A (en) * | 2018-12-27 | 2019-04-26 | 武汉瑞景环境修复工程有限公司 | The method of in-situ oxidation, gas phase extracting combined system and rehabilitating soil |
| CN109926438A (en) * | 2019-03-14 | 2019-06-25 | 中国矿业大学 | Organic contamination underground water and soil integrated repair device and method |
| CN110170510A (en) * | 2019-06-06 | 2019-08-27 | 北京石油化工学院 | A kind of soil and underground water original position cooperative repair method |
| CN110153159A (en) * | 2019-06-12 | 2019-08-23 | 黎承波 | A kind of the joint repair system and its construction method in the place containing Ground Water Oil Pollution |
| CN110153159B (en) * | 2019-06-12 | 2021-07-16 | 黎承波 | Combined restoration system for site containing groundwater and petroleum pollution and construction method thereof |
| CN110387242A (en) * | 2019-06-27 | 2019-10-29 | 浙江工商大学 | A kind of potassium permanganate sustained-release agent and its preparation method and application |
| CN110387242B (en) * | 2019-06-27 | 2020-12-25 | 浙江工商大学 | Potassium permanganate sustained-release agent and preparation method and application thereof |
| CN110355193B (en) * | 2019-07-19 | 2020-08-25 | 中国科学院南京土壤研究所 | In-situ remediation method for polluted site based on dynamic underground water circulation |
| CN110355193A (en) * | 2019-07-19 | 2019-10-22 | 中国科学院南京土壤研究所 | A kind of contaminated site in-situ remediation method based on dynamic ground water circulation |
| CN110451685A (en) * | 2019-08-02 | 2019-11-15 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队 | Combined restoration system and method for removing organic pollution in underground water in mine |
| CN110404956A (en) * | 2019-08-07 | 2019-11-05 | 上海洁壤环保科技有限公司 | A kind of soil and underground water complex repairation system and restorative procedure |
| CN110814009A (en) * | 2019-11-18 | 2020-02-21 | 安徽国祯环境修复股份有限公司 | Pollute soil prosthetic devices |
| CN110814009B (en) * | 2019-11-18 | 2022-03-18 | 安徽国祯环境修复股份有限公司 | Pollute soil prosthetic devices |
| CN111069260A (en) * | 2020-01-13 | 2020-04-28 | 中新曜昂环境修复(江苏)有限公司 | In-situ treatment of non-aqueous contaminants in soil and groundwater |
| CN111151570A (en) * | 2020-02-11 | 2020-05-15 | 南京怡可帮生态环境科技有限公司 | Development and application of rapid and efficient in-situ circulating repair system for organic pollution active oxygen of field soil and underground water |
| CN111589850A (en) * | 2020-04-07 | 2020-08-28 | 南昌航空大学 | Low-permeability multiphase extraction well spacing system and extraction method thereof |
| CN111495948A (en) * | 2020-04-13 | 2020-08-07 | 上海市城市建设设计研究总院（集团）有限公司 | Contaminated site risk management and control cooperative remediation system based on functional separation |
| CN111687202A (en) * | 2020-06-28 | 2020-09-22 | 天津渤化环境修复股份有限公司 | In-situ reuse method and system for underground water |
| CN112159026A (en) * | 2020-08-18 | 2021-01-01 | 南京中微纳米功能材料研究院有限公司 | Treatment method for industrial sewage difficult to degrade |
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| CN112624508A (en) * | 2020-12-18 | 2021-04-09 | 武汉理工大学 | Immobilized enzyme-based slow-release Fenton-like system and method for in-situ remediation of groundwater pollution by using same |
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| CN113458130A (en) * | 2021-07-23 | 2021-10-01 | 杰瑞环保科技有限公司 | In-situ remediation system and method for organic matter contaminated site |
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| CN114833184A (en) * | 2022-05-09 | 2022-08-02 | 常州大学 | Soil pit pickled Chinese cabbage soil repairing device and repairing method thereof |
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| CN114751472A (en) * | 2022-05-12 | 2022-07-15 | 东南大学 | Underground water circulating well device for in-situ remediation of contaminated site and remediation method |
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