60results about How to "Thorough repair" patented technology

The invention discloses integrated and comprehensive soil in-place position-changing combined remedying equipment, and belongs to the technical field of soil remedying. The equipment mainly comprises feeding and discharging machines, heating baking channels, conveying belts, a vacuum pump, a smashing device, a mixer, a solid chemical adding tank, a Venturi conveying pump, an ultrasonic atomizer, a peristaltic pump, a liquid chemical storage tank, a drip washing device, an activated carbon adsorption purification tank, a mud discharging electromagnetic valve and an absorbent storage tank. The modularized design is adopted for the whole set of remedying equipment, flexible matching and combining can be performed according to different types of polluted soil to be remedied, and therefore the cost is lowered. The whole set of equipment can be installed on a trailer to achieve moving operation. The equipment has the multiple remedying functions of thermal desorption treatment, chemical oxidation / restoration, chemical drip washing and others, can achieve in-place position-changing combined remedying on soil containing organic pollutants and heavy metal combined pollution, and is high in remedying efficiency, wide in range, free of harmful gas emissions, safe and environmentally friendly.

The invention discloses a method of quickly repairing a cadmium polluted cultivated land by crop rotation of a cadmium super-enriching plant and an energy plant. The method comprises the following step: planting the cadmium super-enriching plant and the energy plant in the cadmium polluted cultivated land in the natural growth periods thereof for conventional cultivation to achieve the purpose ofrepairing the cadmium polluted cultivated land by means of adsorbing and enriching abilities of the cadmium super-enriching plant and the energy plant, wherein the cadmium super-enriching plant is sedum plumbizincicola and the energy plant is sorghum or oilseed rape. The invention provides a planting mode which is not limited by growth seasons. Based on one year as the repair period, the soil repair efficiency of the polluted cultivated land is increased by means of a relatively long growth period in multi-cropping plantation, and the method is short in repair period, high in operability and low in cost, and repairs the land more thoroughly.

The invention provides an aquatic plant fixing device for repairing water and bottom mud, and belongs to the field of a water pollution recovery technique in environmental protection. The device comprises a submerged plant fixing frame, two floating frames, a nylon net, an ecological floating plate, a sliding rail, a connecting rope and a plant growth substrate, wherein the frames are used for including emergent plants, floating plants and submerged plants into a same system, the frames are connected through a connecting rope to form a triangular stable structure, two floating frames are used for respectively planting the emergent plants and the floating plants, a submerged frame is connected with a submerged plant growing substrate, the water and the bottom mud are repaired by the submerged plants, microbes are doped in the submerged plant growing substrate to promote the plants to absorb and convert pollutants to realize microbe-plant combined repair. According to the aquatic plant fixing device provided by the invention, the optimization of types of plants and space structure can be realized, environment can be beautified, and water quality can be purified; meanwhile, the water and the bottom mud can be repaired, and more thorough and effective repair can be realized.

The invention discloses a method for recovering cadmium polluted soil by combining a compound microorganism bacterium agent with houttuynia cordata. The compound microorganism bacterium agent comprises the following components by count: 1*10<9>-9*10<9>CFU (colony forming unit) / m<3> pseudomonas fluorescens, 1*10<8>-6*10<8>CFU / m<3> actinomyces ruminicola, and 1*10<9>-9*10<9>CFU / m<3> glomus mosseae. The method for recovering the soil comprises the following steps that the houttuynia cordata is planted in cadmium soil and the compound microorganism bacterium agent is inoculated into the soil, or the houttuynia cordata is soaked in the compound microorganism bacterium agent and then planted into the cadmium soil; when branches and leaves of the houttuynia cordata are luxuriant, the branches and the leaves of the houttuynia cordata are harvested; and cadmium in the soil can be removed. The compound microorganism bacterium agent can better improve the tolerance of the houttuynia cordata, promote growth of a plant in the high-cadmium-content soil, improve the absorbility of the plant to cadmium, and enhance a soil heavy metal removal effect. The method for recovering the soil is a safe, environment-friendly, high-efficiency, economical and practical plant-microorganism combined method for recovering the heavy metal polluted soil, and has a significant application value.

The invention discloses application and a remediation method of calcium polysulfide in chromium-contaminated soil or underground water remediation. Calcium polysulfide is adopted for chromium contamination remediation, and two remediation methods are particularly related. The method for remediating chromium-contaminated soil by calcium polysulfide comprises the following steps: investigating the chromium contamination degree of soil, preparing a calcium polysulfide water agent, determining the adding ratio of the calcium polysulfide water agent, adding the calcium polysulfide water agent, supplying water, carrying out remediation reaction, maintaining soil and adjusting the nature of the remediated soil. The method for remediating chromium-contaminated underground water by calcium polysulfide comprises the following steps: arranging injection points, determining the amount of a remediation agent, preparing the remediation agent, positioning the injection points, injecting the calcium polysulfide remediation agent, adjusting the positions and amounts of the injection points and the like. According to the invention, the operation process is simple; the agents are stable in source; the reaction speed is high; the remediation effect is good; the chromium-contaminated soil or underground water can be stable for a long time after remediation; the remediation method can be applied to large-scale implementation, is economic and reasonable, and is a relatively ideal chromium-contaminated soil or underground water remediation technique.

The invention relates to a tunnel lining rapid repair structure based on a carbon fiber woven mesh and a repair method thereof. The tunnel lining rapid repair structure based on the carbon fiber woven mesh comprises self-propelled hollow grouting anchors, joist steel, the carbon fiber woven mesh, U-shaped hooks and a composite mortar layer. The joist steel is arranged on a tunnel lining to be repaired, one end of each self-propelled hollow grouting anchor stretches into the tunnel lining to be repaired in the radial direction of the tunnel lining to be repaired, the other end of each self-propelled hollow grouting anchor is connected with joist steel, the carbon fiber woven mesh is laid on the inner wall of the tunnel lining to be repaired and connected with the joist steel through the U-shaped hooks, and the composite mortar layer is sprayed on the inner surface of the carbon fiber woven mesh. The tunnel lining rapid repair structure based on the carbon fiber woven mesh and the repair method thereof aims to solve the problems existing in the existing tunnel lining reinforcing technology, the structure is reasonable in design, the mechanical property is good the steps of the method is simple, the operability is high, and the project cost is low.

The invention discloses a contaminated soil repair method and a repair device. The repair method comprises the steps of (S1) vacuum thermal separation: performing thermal separation on soil in a vacuum environment so as to separate hazardous substances, and purifying the hazardous substances; (S2) chemical washing: chemically washing the soil on which the vacuum thermal separation is performed; (S3) reduction treatment: adding a reducing agent to the soil on which the chemical washing is performed; (S4) repair: applying a soil repair agent to the soil on which the reduction treatment is performed; (S5) stabilizing treatment: applying a heavy metal cadmium stabilizer and a microbial agent to the repaired soil; and (S6) improvement and maintenance: improving and maintaining the stabilized soil. According to the contaminated soil repair method, the contaminated soil can be thoroughly repaired once with low cost and high efficiency.

The invention relates to a light oil polluted unsaturated zone soil in-situ remediation apparatus and a method thereof. The apparatus comprises an underground well group system, a pipeline system and a ground processing system. The underground well group system comprises an extraction well, an injection well and a ventilation monitoring well. The ground processing system comprises: an oil gas extracting and processing module which comprises a vacuum pump, an oil-gas separation tank and an oil gas adsorption tank, wherein the inlet of the oil-gas separation tank is connected with the extraction well, the outlet of the oil-gas separation tank is connected with the inlet of the oil gas adsorption tank, and the outlet of the oil gas adsorption tank is communicated with the atmosphere; a microbial enhanced remediation module which comprises a microbe and nutrient solution preparation tank, wherein a first injection solution is contained in the microbe and nutrient solution preparation tank, the microbe and nutrient solution preparation tank is connected with the inlet of a first injection metering pump, and the outlet of the first injection metering pump is connected with the injection well; and a chemical oxidation remediation module which comprises a chemical oxidant preparation tank, wherein a second injection solution is contained in the chemical oxidant preparation tank, the chemical oxidant preparation tank is connected with the inlet of the second injection metering pump, and the outlet of the second injection metering pump is connected with the injection well.

The invention relates to a method for remedying a halohydrocarbon contaminated site through combination of chemical leaching and microorganisms, in particular to a leaching method and a microorganism remediation method. The method for remedying the halohydrocarbon contaminated site comprises steps as follows: chemical leaching is adopted, leachate is injected into contaminated soil through an injection well, and the leachate with pollutants is pumped out from an extraction well at the downstream part of the contaminated site. The method is characterized in that the major component of the leachate is a biological surfactant dissolved in an alcohol-water mixed solution, and after the contaminated site is leached by the leachate, a KB1 bacteria suspension is injected into the contaminated soil for microorganism remediation. Due to leaching with the chemical method, the early-stage remediation for the high-concentration halohydrocarbon contaminated site can be realized quickly, then with the adoption of microorganism remediation, the problems that the low-concentration pollutant leaching effect of the chemical leaching technology is poor and the concentration of pollutants is rebounded after leaching can be solved, and the purpose of complete remediation of the halohydrocarbon pollutants is achieved.

The invention is concerned with a repair method to the soil and ground water polluted by exploder. Pour potassium chloride liquid or potassium permanganate liquid in the soil and the polluted plume of ground water polluted by exploder and take ion exchange between the K+ ion and the clay minerals of soil and ground water to entrap contamination with MnO4- ion. Pour potassium permanganate liquid into adsorption entrapment and pollution area to oxidate the contamination. This method has easy process, low demand of technology, low moving cost and engrained repair without pollution, especially to repair the soil and ground water pollution process caused by the exploder, such as aromatic nitro-compound, during the produce, using and disassembly.

The present invention relates to the repair of watercourse and gate recess for hydraulic power station, and is especially one method of utilizing float gate for water shut-off to create dry land condition for haul and repair. It has the features of being convenient, complete and low in cost. The method is that float gate is set in the entrance of sluiceway to form dry land construction condition inside the sluiceway. The float gate shut off water in the deep water head of 60-100 m, has size of (5-15)x(8-20) m corresponding to the entrance size to be shut off.

The invention provides a remediation method for organic contaminated soil. The remediation method comprises the following steps of: mixing the organic contaminated soil, persulfate and bio-carbon powder to obtain pre-remediated soil; and ageing the pre-remediated soil for 30-40 days to remediate the organic contaminated soil. The remediation method can effectively eliminate the organic pollutantsin soil, further can supplement organic carbon for the soil, reduces toxicity of the contaminated soil, remediates soil fertility, does not generate secondary pollution, realizes efficient, green, safe and complete remediation for the organic contaminated soil, and provides a novel way for efficient and safe remediation for the organic contaminated soil.

The invention discloses a repairing agent for soil arsenic pollution. The repairing agent includes a stabilizer, an organic material, and an aqueous preparation made of biological bacteria preparations. The stabilizer includes bentonite, diatomaceous earth, hydroxyapatite, calcium and magnesium Phosphate fertilizer, powder made from silicon fertilizer, the biological bacteria preparation is made into a preparation of HT flora. The remediation agent made by chemical and biological methods can make the remediation soil environmental quality meet the requirements of the secondary standard value of China's "Soil Environmental Quality Standard" (GB15618-1995). Moreover, the components used in the chemical powder, the microorganism strains and the culture medium components required by the microorganisms are all cheap and easy to obtain, and the processing cost is low. In terms of operation, it is simple and convenient, and is convenient for popularization and implementation.

The invention discloses a soil remediation system based on heterotopic thermal desorption. The soil remediation system comprises a polluted soil source conveying unit, a soil and stone screening unit, a stone conveying unit, a cleaning pretreatment unit, a cleaning and sediment unit, a heterotopic thermal desorption unit and a clean soil source conveying unit. According to the soil remediation system based on heterotopic thermal desorption, soil is restored more thoroughly through a peculiar smell thermal desorption and chemical cleaning combined mode, and secondary pollution is effectively reduced; disturbance of water flow in a filter screen area is guaranteed in the recovery process of a cleaning fluid recovery module, and the problem that filter screens are likely to be blocked is solved; disturbance on bottom sediments is effectively suppressed through the cleaning fluid recovery module, so that recycled cleaning fluid does not contain soil and impurities.

The invention discloses a thermal strengthening assisted in-situ chemical oxidation method for remediating organic contaminated soil. The method comprises the following steps: 1) uniformly mixing a remediating agent and the contaminated soil with a thickness of 300 mm of a surface layer by using a rotary tiller, and performing flattening and compacting; 2) arranging points by adopting a GPS locator combined with a triangle method, wherein point arrangement parameters ensure that all remediation areas are covered in a diffusion radius range of the remediating agent; 3) injecting the remediatingagent solution in situ by adopting a high-pressure rotary jetting injection device at arranged point locations; and 4) installing a heating device in each medicine injection hole, heating the contaminated soil to 30-40 DEG C, and maintaining the design temperature until target pollutants and the remediating agent are fully reacted and the concentration of the target pollutants is reduced to a remediation target value or less. The remediating method provided by the invention has the advantages of low costs and a wide application range, and solves the problems of high energy consumption of an in-situ thermal desorption system, and low remediation efficiency, poor effects and limited by a low-temperature environment of a chemical oxidation method in general technologies for remediating organic contaminated soil.

The invention relates to the technical field of soil remediation, in particular to a soil remediation device capable of enhancing the soil remediation effect, which comprises a bracket, a crushing box is correspondingly arranged on the inner side of the bracket, a crushing roller is correspondingly arranged in the crushing box, and a transmission gear is arranged on the front side of the crushing box and corresponds to the crushing roller. A discharging opening is formed in the bottom of the crushing box, a fine dividing hopper is correspondingly arranged on the inner side of the bracket and located below the crushing box, a vibration motor is correspondingly arranged on the outer side of the fine dividing hopper, a mounting frame is correspondingly arranged on the outer side of the fine dividing hopper, and a spring is arranged at the bottom of the mounting frame; and a conveying box is correspondingly arranged on the inner side of the bracket and located below the fine dividing hopper, the front face of the conveying box is connected with a box door through a hinge, and compared with an existing soil remediation device, the overall environmental protection property, safety and practicability of the soil remediation device can be improved through design.

The invention belongs to the field of repairing of high speed pump shafts for petrochemical industry and relates to a laser cladding repairing method for end tooth wear or cracks of general high speed pump gear shafts. The method aims at repairing of parts with wear and cracks on end teeth in long-time running process and comprises the steps of firstly removing damaged end teeth and remanufacturing new end teeth, carrying out hot charging by utilizing the part size change caused by temperature difference, selecting stainless steel powder and wear-resistant Co-based alloy powder which have mechanical properties similar to those of a base material, carrying out cladding by adopting laser cladding process parameters, removing residual stress in cladded parts through a hammering method, finally recovering the parts to a design size through a precise mechanical processing method, thereby recovering the operational performance of the high speed pump gear shafts. The method disclosed by the invention has the advantages that in the laser cladding repairing process of the high speed gear pump shafts, the base material is maintained at a low temperature all the time during cladding and the part deformation rate is almost zero; and the obtained cladding layer is metallurgically combined with a matrix, the automatic efficiency is high and the cost is low.

The invention belongs to the technical field of soil restoration, and in particular relates to a periodic composite repair device of arsenic polluted soil, the periodic composite repair device includes an electric field generating module, a vegetation restoration layer, a soil PH regulating module and a surfactant spraying module, the electric field generating module includes a power supply and an anode chamber and a cathode chamber, the anode chamber and the cathode chamber are arranged under the ground; the vegetation restoration layer is arranged on the surface layer of a to-be-repaired soil region, the restoration vegetation is ciliate desert-grass, the soil PH regulating module sprays a PH adjusting solution to the anode chamber, the cathode chamber and the to-be-repaired soil region, and the surfactant spraying module sprays a surfactant to the surfactant spraying module. Every steps are closely linked, by the manner of determination of periodic circulation on the basis of the detection value, unnecessary time and cost waste can be avoided, soil and electrode chamber PH can be regulated in real time, the ratio of an acid and alkali liquid tank can be regulated by an automatic control device, the stability is high, arsenic is repaired completely, and finally more than 98% of the arsenic can be repaired.

The invention relates to the field of skin care products, and provides a traceless repair composition containing mineral hot spring. The composition at least comprises the following components: a solvent, a chelating agent, a humectant, a thickening agent, a skin conditioner and a pH regulator. The skin conditioner comprises a combination of one or more of p-hydroxyacetophenone, asiatic pennywortherb extract, panthenol and a plant composite anti-allergy agent.

The invention discloses a microbial soil remediation device, comprising a remediation box, wherein the upper end of the remediation box is fixedly connected with a transverse plate through two supporting rods, the side wall of the transverse plate is rotatably connected with a plurality of rotating wheels which are in transmission connection through a belt, and the side walls of the rotating wheels are coaxially and fixedly connected with rotating shafts. The invention further provides an application method of the microbial soil remediation device. The application method comprises the following steps that: S1, the device is placed in open space which can be irradiated by sunlight and is good in ventilation; S2, the filling amount of a thermal-expansion and cold-contraction medium is adjusted; S3, a transparent glass plate is taken out; S4, contaminated soil is placed; S5, a microbial flora is added; S6, nutrient substances are fed and oxygen is supplied; and S7, the transparent glass plate is covered. By arranging a sliding plug which can be automatically adjusted according to sunlight temperature, the rotating angle of a double-sided mirror is further adjusted, so sunlight rays atdifferent moments can be reflected by the double-sided mirror and then vertically irradiate the interior of the repairing box; and thus, repairing process is more thorough.

The invention discloses a pneumatic fracturing enhanced multiphase extraction system for contaminated site treatment, wherein the system comprises a fracturing system unit and a multiphase extractionsystem unit, the fracturing system unit comprises an air compressor, an air heater, a fracturing well and an injection pipe, and the outlet end of the air compressor is connected with the inlet end ofthe air heater. The fracturing well extends to an area below a liquid phase pollution source, the lower end of the fracturing well is closed, a plurality of air outlet gaps arranged at intervals areformed in the length direction of the fracturing well, the inlet end of the injection pipe is connected with the outlet end of the air heater, the outlet end of the injection pipe extends into the fracturing well and is used for injecting heated air into the fracturing well, and the air permeates into contaminated soil through corresponding air outlet gaps. According to the method, cracks are generated in the stratum through pneumatic fracturing, the air permeability of an unsaturated zone is improved, the permeability, hydraulic conductivity and the like of a water-containing layer are changed, saturated vapor pressure of volatile pollutants in the zone can be improved through flowing of the hot air, volatilization of the volatile pollutants is promoted, and the extraction efficiency of MPE is greatly improved.

The invention provides a preparation method of activator for promoting remediation of Cd-contaminated farmland soil by means of Amaranthus hypochondriacus. Absorption of Cd in the soil by means of theAmaranthus hypochondriacus is promoted through application of monopotassium phosphate (0.1 g*kg<-1>), EDTA (2 mmol*kg<-1>) and citric acid (4 mmol*kg<-1>) in the optimal proportion. The method has the advantages that test data indicate that after hyperaccumulators, namely Amaranthus hypochondriacus, are used for remedying the slightly- Cd-contaminated farmland soil and the activator (EDTA and citric acid) is added, the Cd enrichment ability of root, stem and leaf tissue of the Amaranthus hypochondriacus is 2.10, 1.84 and 2.76 times of that before addition of a remediation agent, three crops of Amaranthus hypochondriacus can be planted each year, the removal rate for every mu of land ranges from 6% to 15% under the condition that the remediation agent is added, and the remediation cost isabout 14,000 yuan conservatively, so that sticktight has the better application prospect in remediation of Cd contamination of farmland soil. The activator has the characteristics that thorough remediation is realized, the adaptability is high, secondary pollution is avoided, the cost is low, the application method is simple and the like.

The invention provides a novel polycyclic aromatic hydrocarbon contaminated soil treatment method which is characterized in that polycyclic aromatic hydrocarbon in soil is dissolved out by alcohol, pretreated biogas residue bacteria are added, microorganisms in biogas residues use the alcohol as a carbon source, and the polycyclic aromatic hydrocarbon in solution is more effectively decomposed and transformed. Bio-availability of the polycyclic aromatic hydrocarbon in the soil is improved by adding the alcohol.

The invention belongs to the technical field of organically polluted groundwater treatment, and especially relates to a system for restoring organically polluted groundwater through supersonic wave combined photo-Fenton oxidation, and a method thereof. The main body of an apparatus is a supersonic wave combined photo-Fenton oxidation reaction tower, parts comprising a supersonic generator, an ultraviolet lamp, a TiO2 catalyst coating, a pH-t monitor and a mixer are arranged in the tower, and the tower, the parts, a gas recovery and purification treatment device, a condenser, a Fenton reagent box, an acid-alkali tank, a water storage box, pipelines and various pumps form the complete restoration apparatus. The synergistic effect of the supersonic waves, ultraviolet lights and Fenton oxidation substantially improves the oxidation degrading treatment efficiency of organic matters, and realizes the second pollution-free, efficient and thorough restoration of organic matter polluted groundwater.

The invention relates to the technical field of river channel restoration, and discloses an automatic device for river channel restoration. The tail end of a filter plate frame is movably installed in a supporting frame, a knocking roller rod is movably connected to the inner side of the bottom end of the supporting frame, and a sector plate is engaged with the inner end of the knocking roller rod; a movable rod is movably installed on the front surface of the sector plate, and the top end of the movable rod is movably installed on the rear surface of the gear disc. And the outer side surface of the gear disc is engaged with a toothed plate. When the supporting frame drives the tail end of the filter plate frame to move downwards, in the process that the filter plate frame inclines, a flow guide plate sweeps out surface sludge, meanwhile, a toothed plate at the bottom of the supporting frame is meshed with a gear disc to drive a sector plate at the bottom end of a movable rod to move downwards, the sector plate is meshed with a knocking roller rod through a tooth groove in the surface, and the knocking roller rod continuously jars the filter plate frame; the whole device is driven by water flow, a large amount of sludge contained in the river channel water flow can be effectively removed, and river restoration is more thorough.

The invention discloses a method for repairing secondary fiber or recycled fiber keratinization.The secondary fiber or the recycled fiber is added into an alkali urine solution which has been pre-cooled to a low temperature, then a regeneration liquid is added to reconstitute the fiber hydrogen bond network and repair keratinization, filtered, repeatedly washed to be neutral, so that a fiber pulpis obtained.The repairing method breaks through atraditional partial repairing method, such as pulping, chemical additives, physical grading and mixing, and the like, and has advantages of simplein repair process, mild in condition and thorough in repair. Water retention value after secondary / recycled fiber repair with different reuse times can reach 131.01%-145.57%,which is equivalent to or slightly higher than that of primary fiber, corresponding to having carrying outreversal repair of the keratinization of the secondary fiber or the recycled fiber, so that the process can prolong life cycle of the secondary fiber or the recycled fiber, providing a brand-new technique for pulpand papermaking technology to improve the water retention value of the secondary fiber or the recycled fiber.

The invention discloses a volatile contaminated soil remediation integrated device, and belongs to the technical field of contaminated soil treatment. The device comprises an outer shell of which thetop is provided with an exhaust fan, and a soil storage cavity, a ozone oxidation mechanism, a neutralization spraying mechanism and an adsorption mechanism which are arranged in the outer shell. A rotating cylinder and arc-shaped plates arranged along the circumference of the inner side of the rotating cylinder at equal intervals are arranged in the soil storage cavity, and stirring plates are fixed to the outer side face of the rotating cylinder along the circumference of the rotating cylinder at equal intervals; a through hole is formed in the rotating cylinder between every two adjacent stirring plates, the arc-shaped plates are in one-to-one correspondence with the through holes and block the inner sides of the through holes, one side of each arc-shaped plate is hinged to the inner side face of the rotating cylinder, torsional springs are arranged at the hinged positions, and through holes allowing soil to pass through but not allowing stones to pass through are formed in the arc-shaped plates in a full-distributed mode. The soil remediation integrated device can disperse soil, volatile matter in the soil can be fully volatilized conveniently, and remediation is more thorough;meanwhile, stones in the soil can be separated out, and the quality of the treated soil can be improved.

The invention relates to a light oil polluted unsaturated zone soil in-situ remediation apparatus and a method thereof. The apparatus comprises an underground well group system, a pipeline system and a ground processing system. The underground well group system comprises an extraction well, an injection well and a ventilation monitoring well. The ground processing system comprises: an oil gas extracting and processing module which comprises a vacuum pump, an oil-gas separation tank and an oil gas adsorption tank, wherein the inlet of the oil-gas separation tank is connected with the extraction well, the outlet of the oil-gas separation tank is connected with the inlet of the oil gas adsorption tank, and the outlet of the oil gas adsorption tank is communicated with the atmosphere; a microbial enhanced remediation module which comprises a microbe and nutrient solution preparation tank, wherein a first injection solution is contained in the microbe and nutrient solution preparation tank, the microbe and nutrient solution preparation tank is connected with the inlet of a first injection metering pump, and the outlet of the first injection metering pump is connected with the injection well; and a chemical oxidation remediation module which comprises a chemical oxidant preparation tank, wherein a second injection solution is contained in the chemical oxidant preparation tank, the chemical oxidant preparation tank is connected with the inlet of the second injection metering pump, and the outlet of the second injection metering pump is connected with the injection well.