82 results about "Permeable reactive barrier" patented technology

The invention discloses a factory soil and groundwater pollution risk management and control method. The method comprises the following steps: acquiring a factory data set at a current moment and a historical moment; establishing a risk prediction model based on the factory data set; dividing risk grade distribution in the factory based on the risk prediction model and repairing the risk grade distribution; for the high-risk area, in-situ chemical oxidation and a permeable reactive barrier are adopted for repairing; phytoremediation or microbial remediation is adopted for medium risk areas; a low-risk area does not need to be repaired; the method can accurately predict the risk grade distribution in the factory according to the geological parameters, pollutant monitoring data and environmental dynamics of the factory, realizes risk grading output by constructing a risk prediction model fusing a physical mechanism and machine learning advantages, improves the accuracy and repair efficiency of risk assessment, and improves the risk assessment efficiency. And the pertinence, the economical efficiency and the environmental benefits of pollution control are remarkably improved.

The utility model discloses an in-situ groundwater heavy metal pollution remediation device. Comprising two permeable reactive barriers arranged at intervals in the groundwater pollution plume runoff direction. A filling cavity is formed between the two permeable reactive barriers, and filling materials are arranged in the filling cavity. According to the utility model, a double-unit permeable reactive barrier is adopted to carry out an in-situ remediation method, the first unit is filled with a zeolite and volcanic rock composite filter material to adsorb and capture heavy metal pollutants, and the second unit is filled with an active charcoal composite filler to further efficiently adsorb residual heavy metals. In addition, a plant planting zone is constructed for planting heavy metal hyperaccumulation herbaceous plants, pollutants such as heavy metal in underground water are thoroughly removed through the absorption and stabilization effect of plants, and the underground water is purified. The device adopts stable, economic, efficient and safe active filler to adsorb and remove heavy metals in underground water, and has the advantages of efficient restoration, strong applicability, ecological environmental protection and the like.

The utility model discloses a device for synchronously removing multi-target pollutants of underground water, and relates to the technical field of underground water pollution remediation. The device for synchronously removing the underground water multi-target pollutants comprises a permeable reactive barrier, a first unit is arranged on the right side of the permeable reactive barrier, a permeable grid is arranged on the right side of the first unit, an automatic sample detection and analysis device is arranged above the permeable grid, and a second unit is arranged on the right side of the permeable grid. According to the device for synchronously removing the multi-target pollutants in the underground water, the pollutants are subjected to multi-stage enhanced treatment based on the synergistic effect of adsorption, electrochemistry, plant enrichment and microbial degradation through an electrodynamic force combined physical-chemical-phytoremediation technology, so that the efficient and lasting removal of the composite pollutants such as heavy metals, inorganic matters and organic matters in the underground water is realized; the method solves the problem of difficult cooperative treatment of multiple pollutants, and has the advantages of simple construction, low installation cost, efficient restoration, strong applicability, ecological environmental protection and the like.

The utility model discloses a barrier wall for a permeable reactive barrier system, which belongs to the technical field of rainfall flood management and comprises a reaction system, mounting baffles are respectively arranged on two sides of the reaction system, a plurality of convex insertion blocks are arranged on the side portions of the mounting baffles, and barrier plates are sleeved on the convex insertion blocks. The side face of the blocking plate is fixedly connected with a blocking plate, the middle of the blocking plate is fixedly connected with a mesh plate in a sleeving mode, the blocking plate is provided with a water guiding mechanism, one end of the blocking plate is fixedly connected with a connecting block, and the other end of the blocking plate is provided with a connecting groove. According to the utility model, underground water and underground soil are blocked by utilizing the blocking plate, so that the underground water is prevented from driving the soil to move, water in the soil can penetrate through the mesh plate to move towards the reaction system, and the underground water can smoothly flow and cannot drive the soil to run off; and the practicability of the barrier wall for the permeable reactive barrier system is improved.

The invention discloses a filling material applied to an underground permeable reactive barrier technology, and particularly relates to an iron-carbon composite solid acid material which is used as the filling material for removing chlorinated organic matters in the underground permeable reactive barrier technology. The carbon composite solid acid material provided by the invention has a good removal effect on pollution of organic matters in underground water. The method for removing water pollutants by using a single material in the traditional PRB is replaced, the service life is prolonged, and the removal efficiency is enhanced.

The invention discloses a petrochemical industrial park groundwater pollution remediation device and method. The remediation device comprises a waterproof structure and a permeable reactive barrier arranged in the waterproof structure. Wherein the permeable reactive barrier comprises a wall body, and a circulation channel for underground water to pass through is formed in the wall body in a penetrating manner; the multiple sets of assembly bases are sequentially arranged in the circulation channel in the underground water flowing direction, one ends of the assembly bases movably penetrate through the top wall of the circulation channel, the other ends of the assembly bases extend into guide grooves formed in the bottom wall of the circulation channel, and cavities are formed in the positions, corresponding to the circulation channel, in the assembly bases; and through holes communicated with the cavity are formed in the positions, corresponding to the circulating channel, of the outer walls of the assembly seat and the cover plate. According to the invention, the assembly base can be upwards detached out of the wall body from the top of the wall body, the reaction medium in the cavity of the assembly base can be replaced, and the continuous and stable use of the equipment is ensured while the reaction medium is rapidly and conveniently replaced in the mode.

The invention relates to a multi-permeable reactive barrier developed for use in nuclear power plants, which provides the uptake of cesium and strontium radionuclides, and contains at least one upper cover (1) providing fixation, through which the liquid enters; at least one lower cover (2) providing fixation, through which the liquid exists (drainage); at least one sealing element (3) positioned to separate each component from each other; at least one liquid permeable filter (4); and at least one body (5) containing zeolite, diatomite, clay and sepiolite components, respectively from top to bottom.

The invention discloses construction equipment and a construction method for a non-excavation type permeable reactive barrier, and relates to the technical field of permeable reactive barriers. Step 2, constructing a reaction wall; and step 3, regular monitoring and maintenance. By improving the construction method, the construction efficiency and convenience can be improved; according to the construction equipment, a mounting mechanism and a clamping mechanism are arranged, a downward pressing seat drives a drill bit to move downwards to conduct drilling operation, after a certain depth is drilled, a fixing block moves out of a fixing groove, the downward pressing seat moves upwards, a rotating seat is separated from the drill bit, a lengthening section is moved to the position between the drill bit and the rotating seat, and the lengthening section is mounted between the drill bit and the rotating seat; the downward pressing seat continues to move downwards, so that the drill bit is driven to continue to move downwards for drilling operation; and after a certain depth is drilled, the operation is repeated, and the lengthening section is continuously added, so that the lengthening section is conveniently added, the drilling operation can be performed on a deeper position, and the drilling of different depths is conveniently performed.

The invention discloses a gradient degradation treatment device for groundwater chlorinated hydrocarbon pollutants in the technical field of groundwater pollution remediation, and the gradient degradation treatment device comprises a permeable reactive barrier which comprises a wall body, and a plurality of groups of treatment cavities are formed in the wall body; each water guide mechanism comprises a pump body, and a water pumping pipe and a water draining pipe which are respectively arranged at the input end and the output end of the pump body; the water pumping pipes and the water discharging pipes in two adjacent groups of water guiding mechanisms extend into one treatment cavity; and the output ends of the medicament supply mechanisms are communicated with the drainage pipe. According to the invention, a plurality of independent treatment cavities are separately arranged in the permeable reactive barrier along the water flow direction, directional sequential conveying of water among the treatment cavities is realized by means of a plurality of groups of water guide mechanisms, and meanwhile, the water guide mechanisms for supplying water to the treatment cavities are linked through the medicament supply mechanism; a stable reaction gradient of reduction-transition-oxidation is effectively constructed in a pollution plume field, and efficient degradation treatment of chlorinated hydrocarbon pollutants is realized.

The invention relates to a multi-permeable reactive barrier developed for use in nuclear power plants, which provides the uptake of cesium and strontium radionuclides, and contains at least one upper cover (1) providing fixation, through which the liquid enters; at least one lower cover (2) providing fixation, through which the liquid exists (drainage); at least one sealing element (3) positioned to separate each component from each other; at least one liquid permeable filter (4); and at least one body (5) containing zeolite, diatomite, clay and sepiolite components, respectively from top to bottom.

The application provides a permeable reaction wall filling material and a preparation method and application thereof. The permeable reaction wall filling material provided by the application comprises a first molecular sieve, a second molecular sieve, a metal oxide, a mesoporous material and a binder, the silicon-aluminum ratio of the first molecular sieve is greater than or equal to 200, and the silicon-aluminum ratio of the second molecular sieve is 5-80. The permeable reaction wall filling material of the application comprises two molecular sieves with different silicon-aluminum ratios and a metal oxide, can effectively combine the principles of adsorption and oxidation, is applied in the treatment of soil and groundwater, has good treatment performance on low-concentration organic pollutants in water, and has excellent regeneration performance.

The invention discloses a PRB permeability coefficient prediction method considering a dynamic heterogeneous mineral precipitation blocking process, and belongs to the technical field of permeable reactive barrier, and the method comprises the following steps: carrying out a visual microfluidic experiment of CaCO3 heterogeneous precipitation; performing parameter extraction according to a visual microfluidic experiment result; constructing a multi-parameter correction function and correcting a K-C equation based on a visual microfluidic experiment result and the extracted parameters; and dynamically updating the K-C equation based on the multi-parameter correction function so as to complete the prediction of the permeability coefficient. According to the method disclosed by the invention, the pore structure image and permeability data in the heterogeneous precipitation process are synchronously obtained in situ by utilizing a visual micro-fluidic experiment, so that a quantitative relation between precipitation characteristics and key constants in a K-C equation is established and is dynamically corrected, and accurate prediction of the PRB permeability coefficient is further realized.

The invention discloses an emergency anti-seepage method for a permeable reactive barrier, which comprises the following steps of: 1, determining a construction position of the permeable reactive barrier according to underground water hydrogeological conditions and the like, excavating a groove to a water-resisting layer by utilizing equipment such as an excavator, a hydraulic grab bucket and a continuous excavating machine, an outer frame body of the front wall body and an outer frame body of the rear wall body are arranged in the excavated groove; according to the invention, the water-permeable wall body formed by the water-permeable structural body frame in a special shape is directly combined by using a chamfer shape and then can be directly mounted into the PVC white pipe and the screen pipe to form the underground water monitoring well, and the underground water monitoring well does not need to be continuously constructed in the permeable reactive barrier by using a drilling machine; the front wall body can be used as a reaction wall and can also be used as a safety wall, when emergency pollution leakage occurs in a production enterprise, the prefabricated water-permeable structure wall body is replaced with the prefabricated water-impermeable wall body, migration of pollutants can be effectively blocked, and the uncontrollable pollution source leakage phenomenon is avoided.

The invention discloses a tea garden sloping field surface runoff nitrogen and phosphorus multi-stage treatment and recovery system and method, and the system comprises a tea garden sloping field and a drainage ditch arranged in the tea garden sloping field, and further comprises a multi-stage permeable reactive barrier and a multi-stage soil seepage ditch which are arranged in the tea garden sloping field, the multi-stage permeable reactive barrier comprises at least three stages of permeable reactive barriers which are arranged in parallel at intervals; the multiple stages of soil seepage ditches are arranged close to the last-stage permeable reactive barrier and comprise water collecting ditches which are arranged in parallel in the direction perpendicular to the sloping field, M-shaped soil bricks are arranged in the water collecting ditches, pebbles are filled in the water collecting ditches, and the upper portions of the water collecting ditches are filled with vegetation belts; and the surface runoff passing through the multi-stage permeable reactive barrier enters the multi-stage soil seepage ditch and overflows to the drainage ditch of the tea garden slope through the multi-stage soil seepage ditch. By coupling the multi-stage permeable reactive barrier and the multi-stage soil seepage ditch technology, nitrogen and phosphorus pollution driven by runoff of the southwest tea garden is effectively prevented and controlled, and nitrogen and phosphorus are effectively recovered.

The invention relates to the technical field of heavy metal treatment, in particular to a heavy metal pollution resistance control and intelligent early warning method based on a permeable reactive barrier, which comprises the following steps: acquiring resistivity data, analyzing a spatial variation trend, extracting a derivative sequence to judge direction retentivity, screening out abnormal points to construct a boundary trajectory, and positioning a pollution and wall intersection section. And judging a response trend, merging point locations, and integrating and outputting a heavy metal pollution resistance control and intelligent early warning graph. According to the method, on the basis of continuous analysis of the resistivity change trend and the derivative sequence, the consistent features in the spatial direction are extracted, a pollution migration layer and a response distribution diagram are constructed, a stable diffusion region and a disturbance boundary are recognized, accurate positioning of the pollution path and the reactive barrier intersection section is completed, and the continuous response state is judged through the derivative trend continuity. The graphical expression of the dynamic pollution process and the accurate classification of response areas are realized, and the continuity of pollution identification, the timeliness of early warning output and the accuracy of spatial judgment are enhanced.

This invention discloses a method for repairing permeable reactive walls with in-situ unblocking and regeneration functions and microbial activation, belonging to the field of groundwater pollution remediation technology. The method uses a monitoring system to monitor and assess the status of the multi-media composite reactive wall in real time. When a blockage trend or a decline in treatment efficiency occurs, in-situ hydraulic disturbance, flushing and unblocking, and microbial activation are used to repair the multi-media composite reactive wall. This method uses permeability degradation as a trigger condition to synergistically implement in-situ unblocking and regeneration with the maintenance or dynamic activation of microbial activity in the repair of permeable reactive walls. By switching or coordinating the repair mode, unblocking mode, and activation mode under different operating conditions, it improves the engineering stability, repair sustainability, and full life-cycle operational reliability of permeable reactive walls without relying on specific reactive materials or strict environmental conditions.

The utility model provides a permeable reactive barrier simulation device. The permeable reactive barrier simulation device comprises a planar two-dimensional sand tank, a steel frame, a constant water head water supply and discharge system and an image shooting system, the planar two-dimensional sand tank is horizontally arranged on the steel frame; a decompression confluence type permeable reactive barrier is arranged in the planar two-dimensional sand tank; a liquid inlet and a liquid outlet are respectively formed in two sides of the planar two-dimensional sand tank; the constant water head water supply and discharge system is connected with the liquid inlet and the liquid outlet, and the image shooting system is arranged in the steel frame; the image shooting system is used for dynamically observing and capturing the migration process of the pollution plume in the porous medium from the bottom of the planar two-dimensional sand tank so as to evaluate the pollution plume capturing effect of the reduced-pressure confluence type permeable reaction barrier. The device can solve the problems that a traditional sand tank experiment cannot effectively reflect the decompression confluence process and cannot quantitatively evaluate the pollution plume trapping effect and the like.

This invention discloses a zoned permeable reactive barrier (PRB) for groundwater denitrification using a combination of zero-valent iron / slow-release carbon and zeolite, and its operating process. The PRB's structure comprises: (1) a quartz sand water distribution zone; (2) Fe... 0 / C-Denitrifying bacteria reaction zone; (3) Zeolite adsorption zone. This invention uses a mixture of biomass slow-release carbon and artificial slow-release carbon as a slow-release carbon source, and adds zero-valent iron to construct Fe 0 The / C system, using a mixed denitrifying bacteria agent for rapid start-up, and a zoned permeable reactive barrier (PRB) operation process for groundwater denitrification have been developed. This includes: filling processes based on different media permeability coefficients, reaction zone packing material compatibility based on different slow-release rates, and operating parameters based on different groundwater nitrogen pollutant concentrations. This invention improves the adaptability of the PRB process to hydrogeological conditions, accelerates the start-up of the denitrification process, ensures denitrification effectiveness during the start-up phase, improves denitrification efficiency during operation, and extends remediation time.

This invention discloses a method for predicting the permeability coefficient of a permeable reactive barrier (PRB) considering the dynamic non-uniform mineral precipitation and blockage process. It belongs to the technical field of permeable reactive barriers and includes: conducting a visualized microfluidic experiment on the non-uniform precipitation of CaCO3; extracting parameters based on the results of the visualized microfluidic experiment; constructing a multi-parameter correction function and correcting the K-C equation based on the results of the visualized microfluidic experiment and the extracted parameters; dynamically updating the K-C equation based on the multi-parameter correction function, thereby completing the prediction of the permeability coefficient. This invention utilizes a visualized microfluidic experiment to simultaneously and in-situ acquire pore structure images and permeability data during the non-uniform precipitation process, thereby establishing a quantitative relationship between precipitation characteristics and key constants in the K-C equation, and dynamically correcting it to achieve accurate prediction of the PRB permeability coefficient.

The invention relates to a composite groundwater remediation system and method for treating petroleum hydrocarbon pollution, and the system comprises a groundwater extraction well and a groundwater recharge well which are arranged in a groundwater petroleum hydrocarbon polluted area, and the groundwater extraction well is surrounded by a permeable reactive barrier; a pressurizing water suction pump, a gas-liquid separator, a mixed reaction tank and an adjusting tank which are sequentially communicated through pipelines are arranged on the ground of the area where underground water is polluted by petroleum hydrocarbon, a chemical adding tank used for adding treatment chemicals into the mixed reaction tank is arranged near the mixed reaction tank, and the pressurizing water suction pump pumps water in the underground water extraction well and pumps the water to the gas-liquid separator. And the water treated by the gas-liquid separator is sequentially treated in the mixed reaction tank and the regulating tank and then is conveyed back to the underground water recharge well. The method has the advantages of large treatment capacity and high efficiency, ensures removal of petroleum hydrocarbon pollutants in underground water, and also can reduce secondary pollution of chemical reaction byproducts to the environment at the same time.

The invention provides environment restoration type electric reinforced permeable reactive barrier equipment which comprises a permeable reactive barrier, an anode well and a cathode well, the anode well and the cathode well are arranged on the two sides of the permeable reactive barrier respectively, an anode control box is installed on the top of the anode well, a cathode control box is installed on the top of the cathode well, and the anode control box is connected with the cathode control box. A high-precision adjustable direct-current stabilized power supply is arranged at the top of the permeable reactive barrier, and the anode control box and the cathode control box are both connected with the high-precision adjustable direct-current stabilized power supply; the permeable reactive barrier comprises a soil chamber, two PRB chambers and two electrode chambers, and electrode plates are mounted in the electrode chambers through electrode clamps; the advantages of the two technologies are combined, pollutants can be pushed to the PRB through electromigration and electroosmosis of electrokinetic remediation, the removal efficiency of the pollutants is improved, the pollutants can be further treated through the physical, chemical or biological action process of the PRB, and therefore the better remediation effect is achieved.

An emergency anti-seepage method for a permeable reactive barrier. The method comprises: determining a construction position of a permeable reactive barrier on the basis of hydrogeological conditions of groundwater, etc., using apparatuses such as an excavator, a hydraulic grab and a continuous trenching machine to excavate a trench to an impermeable layer, and placing outer frame bodies of a front wall and a rear wall into the excavated trench; establishing water-permeable structural body frames for the front wall and the rear wall on the basis of required wall dimensions, and assembling a plurality of water-permeable structural body frames to form a permeable reactive barrier; loading reactive media into the water-permeable structural body frames to form prefabricated water-permeable walls, placing the plurality of prefabricated water-permeable walls in the outer frame bodies and assembling same to form the permeable reactive barrier, wherein a chamfer combination formed by assembling the plurality of prefabricated water-permeable walls can be directly placed into a PVC pipe to serve as a groundwater monitoring well; and when an emergency leakage event occurs and isolation is required, replacing the prefabricated water-permeable walls with prefabricated water-impermeable walls. Thus, migration of contaminants can be effectively blocked, and uncontrollable leakage of contaminant sources is avoided.

The invention discloses a system for blocking and treating important nuclides in radioactive nuclear polluted water, which comprises a separating wall and a permeable reactive barrier, the separating wall is arranged between a nuclear energy facility and a river along the bank, is vertical to the flow direction of radioactive sewage, and is used for blocking the radioactive nuclear polluted water; moreover, a notch is formed in the separating wall, and the permeable reactive wall is distributed in the notch and is used for purifying radionuclides and non-radioactive heavy metals in the radioactive nuclear polluted water. According to the invention, radionuclides and non-radioactive heavy metals in radioactive nuclear sewage can be effectively removed, and contributions are made to nuclear sewage treatment under nuclear emergency conditions.

This invention provides a permeable reactive wall process and its application for simultaneously removing hexavalent uranium and sulfate from groundwater. The permeable reactive wall process consists of a first treatment unit and a second treatment unit arranged sequentially along the water flow direction. The first treatment unit is filled with a first reaction medium, including zero-valent iron, sulfur-modified coconut shell charcoal, and sulfate-reducing bacteria. The second treatment unit is filled with a second reaction medium, including zero-valent iron, ferric oxide, sulfur-modified coconut shell charcoal, and *Priestia* sp., a non-pathogenic and environmentally friendly bacterium that can simultaneously remove uranium from water through adsorption and reduction. The composite permeable reactive wall process provided by this invention has strong resistance to interference from other substances in the water. When used to simultaneously remove sulfate and hexavalent uranium from groundwater at 15–35°C, the removal rates of both sulfate and uranium in the groundwater are greater than or equal to 90%.

The application provides a permeable reaction wall for composite mine pollution and a wastewater treatment system, wherein the permeable reaction wall comprises a framework shell, a filter layer and alkaline fillers; the alkaline fillers are located in the framework shell, and the filter layer is located between the alkaline fillers and the framework shell; the framework shell comprises a two-way geogrid, and the filter layer comprises a geotextile screen; the framework shell comprises a main body part and end parts located at two ends of the main body part, and openings are arranged on the end parts. The permeable reaction wall containing the alkaline fillers can neutralize the acidic water generated by the pollution in the mine, reduce the pollution degree of the water in the mine, reduce the cost, and has a good pollution water treatment effect.

The utility model discloses a permeable reactive grating wall which comprises a wall body, a sealing cover is arranged at the upper end of the wall body through a fixing hook, a first processing assembly is arranged in the wall body, a part of the first processing assembly is arranged at one end of the sealing cover, two sides of the wall body are connected with second processing assemblies, and the second processing assemblies are connected with the wall body. The second treatment assembly is communicated with the interior of the wall body, through the arrangement of the first treatment assembly, in the underground water permeation treatment process, the multiple filtering grids in the wall body can be cleaned, cleaned impurities are collected, meanwhile, through mutual cooperation with the second treatment assembly, the underground water permeation treatment effect is improved, and the underground water permeation treatment efficiency is improved. According to the underground water treatment device, entering underground water can be pretreated in the carburizing reaction process, so that the treatment effect of the underground water can be ensured, and the underground water subjected to permeation treatment can be detected after wall treatment, so that the treatment effect of the underground water can be ensured.

A system for treating DNAPL polluted underground water comprises a first filter material space, a separation space, a dissolved phase treatment space, a treated underground water space and a second filter material space which are sequentially connected through sieve plates in the flowing direction of the underground water. A partition plate for preventing DNAPL phase pollutants from flowing to the dissolved phase treatment space is arranged at the bottom of the sieve plate at the joint of the separation space and the dissolved phase treatment space; the permeable reactive barrier is improved, so that the service life of the active filler is prolonged, and the treatment cost of DNAPL phase pollutants is effectively reduced.

The invention discloses a denitrification system and a permeable reactive barrier for rare earth mining area groundwater pollution remediation, and belongs to the technical field of groundwater remediation, the denitrification system sequentially comprises a nitrification area, a physical adsorption area and a combined denitrification area in the water flow direction, and filler of the combined denitrification area comprises a zero-valent iron material and denitrifying bacteria, the denitrification system is coupled with microbial remediation, chemical reduction and physical adsorption technologies, is low in cost and simple in structure, and can effectively improve the remediation effect of three-nitrogen pollution of underground water in the mining area by controlling the areas where the underground water in the rare earth mining area sequentially passes along the water flow direction.

The utility model belongs to the technical field of groundwater remediation, and particularly relates to an oxygen injection permeable reactive barrier system for groundwater in-situ remediation, which comprises an underground reaction tank, and the upstream end and the downstream end of the underground reaction tank are respectively provided with an upstream face semi-enclosed clamping groove and a downstream face semi-enclosed clamping groove. A first permeable reactive barrier is vertically and slidably mounted in the upstream face half-wrapped clamping groove, a second permeable reactive barrier is vertically and slidably mounted in the downstream face half-wrapped clamping groove, and an oxygen injection groove is formed between the first permeable reactive barrier and the second permeable reactive barrier. And a gas injection device for injecting oxygen into underground water in the oxygen injection tank is arranged outside the oxygen injection tank. The oxygen injection tank is additionally arranged between the two permeable reactive barriers, the oxidation-reduction environment of underground water is changed by injecting oxygen-containing air, the activity of aerobic microorganisms is improved, and pollutants are promoted to be oxidized, decomposed or degraded so as to be reduced; through cooperation of the first permeable reactive barrier, the oxygen injection tank and the second permeable reactive barrier, simultaneous in-situ treatment of heavy metal pollutants and organic pollutants in underground water is realized, and effluent quality is guaranteed.

The utility model provides a manganese removal permeable reactive barrier device which is arranged at an ore hole opening and used for intercepting pollutants in a reactive barrier body. The reaction wall device comprises a water guide door, a barrier wall, a plurality of sandstone transition areas and a plurality of reaction areas which are sequentially arranged in the direction of the underground water force gradient, and the sandstone transition areas and the reaction areas are sequentially, alternately and continuously arranged; each reaction area is provided with a reaction groove, a reaction turnover box is arranged in each reaction groove, and the reaction turnover boxes are filled with reaction adsorption materials in a replaceable mode and used for oxidizing dissolved-state divalent manganese in underground water into high-valence-state manganese oxide so as to reduce pollution mobility; the barrier efficiency of the reaction wall can be improved, and the repair cost can be reduced.