43 results about "Site Remediations" patented technology

The invention provides a contaminated site remediation technology scoring system which comprises a multi-dimensional evaluation index system construction module, a situational weight dynamic adjustment module, a remediation technology applicability scoring module, an uncertainty analysis and sensitivity test module, a scoring result visualization module, a technical scheme sorting and screening unit and the like. Through four innovations of a dynamic weight adaptation mechanism, a multi-model fusion scoring algorithm, a technology combination scheme evaluation module and uncertainty robust analysis, the problems of single dimension, weight solidification, difficulty in quantification of a synergistic effect and the like in pollution remediation technology evaluation are systematically solved; and an objective, efficient and transparent intelligent decision-making tool is provided for repairing a complex polluted site.

The invention provides a multi-modal big language model inference engine which comprises a pre-training big language model adaptation layer, a pollution remediation knowledge graph enhancement module, a multi-modal information understanding and fusion unit, a technology implementation optimization module and an inference chain and decision interpretation generator. The system adopts a hierarchical modular design, all components communicate through a standardized API interface, efficient and stable data circulation is ensured, and the problems of knowledge application limitation, opaque reasoning process, difficulty in professional knowledge fusion, knowledge updating lagging, limited multi-modal data processing capability and the like in the existing contaminated site remediation decision process are solved.

The invention relates to the technical field of environmental pollution remediation, in particular to a refuse landfill coupling contaminated soil remote remediation system and method. The method comprises the following steps: carrying out deep stratified sampling and soil sample characteristic classification on a remotely repaired polluted soil heap to obtain remotely repaired soil samples corresponding to different pollution types; purified biogas is obtained to serve as a heat source for organic pollution desorption and conversion and solidification and stabilization coupling remediation, and a soil sample containing heavy metal after solidification and stabilization remediation is generated; carrying out chemical environmental assessment analysis and cyclic remediation treatment on the soil sample containing the heavy metals after solidification and stabilization remediation to generate a soil sample after organic pollution and heavy metal remediation; and carrying out fly ash landfill and reutilization on the soil sample subjected to organic pollution and heavy metal remediation to generate the remedied remote fly ash landfill and reutilization soil. Refuse landfill resources and remote polluted soil remediation can be combined to realize corresponding soil recycling.

The invention discloses an in-situ thermal desorption synergistic remediation system suitable for a complex polluted site, and relates to the technical field of site remediation. The intelligent composite heating module is fused with a technology and automatically adjusted according to soil characteristics, and a nano element goes deep into the ground and is rapidly heated; the self-adaptive extraction module adjusts gas extraction according to gas concentration and flow direction; a multi-stage coupling purification module integration technology is used for deeply decomposing pollutants; the multi-source fusion monitoring module adopts multiple monitoring means and 5G data transmission; the cloud control intelligent decision-making module receives monitoring data through cloud computing and artificial intelligence, analyzes and predicts the monitoring data in real time, and automatically adjusts the operation mode of each module. Intelligent heating is accurate and efficient, extraction is adaptive, energy is saved, multi-stage purification deep treatment is achieved, monitoring is accurate, transmission is fast, and intelligent decision-making and real-time adjustment are achieved; and an additive can be accurately injected to promote ecological restoration, complex pollution is efficiently treated, and both environmental protection and economical efficiency are achieved.

The invention provides a contaminated site remediation progress management method fusing multi-source data, which comprises the following steps: collecting unmanned aerial vehicle aerial survey data and soil remediation real-time data of a contaminated site, and carrying out semantic association to obtain a multi-source data set after semantic fusion; based on an association rule algorithm, analyzing an association relationship among data in the multi-source data set, and screening out a key factor set according to the association relationship and the correlation in combination with calculation and a repair progress; inputting data in the key factor set into a pre-trained restoration progress prediction model for real-time progress prediction, and outputting a predicted value of the current restoration progress of the polluted site; and performing deviation analysis on the predicted value and an actual value of the repair progress uploaded by the construction side, calculating an error between the predicted value and the actual value, analyzing a variation trend of the error through a sliding window algorithm, and judging whether the repair progress is abnormal or not based on the variation trend. According to the invention, the defect of inaccurate prediction of the repair progress is overcome.

The invention relates to a containerized method for the thermal treatment of contaminated solids, pasteous materials, and waste. The system comprises at least one thermally insulated container designed to minimize heat loss and enable material loading from a liftable top panel or a side panel, as well as at least one heat production unit featuring a burner control system and a combustion chamber capable of achieving oxidizing conditions for the complete destruction of contaminants. The method provides simultaneous thermal treatment of materials and vapor-phase contaminant destruction, supported by a ventilation system and a monitoring system for real-time adjustments. In a second aspect, the invention provides a containerized device with comparable operational features, designed for portability and modular deployment, facilitating on-site remediation in remote locations.

The utility model relates to the technical field of contaminated site remediation, and discloses a contaminated site remediation agent spraying device which comprises a working plate, a penetrating groove is formed in the right side of the top face of the working plate, guide blocks are fixedly connected to the two side walls of the penetrating groove, and soil turning assemblies are slidably connected to the interiors of the guide blocks; the soil turning assembly comprises a fixing plate, the fixing plate is slidably connected to the interior of the guide block, a sliding groove is formed in the middle of the top of the fixing plate in a penetrating mode, and a plurality of connecting blocks are slidably connected to the interior of the sliding groove. The distance between the coulters is adjusted by sliding the connecting block according to the actual situation, then a person can screw the limiting bolt to fix the coulters with the adjusted distance, then the power source of the electric telescopic rod can be switched on, the fixing plate is driven to slide downwards along the interior of the guide block, and the coulters make contact with the interior of the ground immediately, so that the distance between the coulters is adjusted. And soil renovating is carried out, so that convenience is brought to personnel to adjust the distance between the turned soil.

The invention relates to a containerized method for the thermal treatment of contaminated solids, pasteous materials, and waste. The system comprises at least one thermally insulated container designed to minimize heat loss and enable material loading from a liftable top panel or a side panel, as well as at least one heat production unit featuring a burner control system and a combustion chamber capable of achieving oxidizing conditions for the complete destruction of contaminants. The method provides simultaneous thermal treatment of materials and vapor-phase contaminant destruction, supported by a ventilation system and a monitoring system for real-time adjustments. In a second aspect, the invention provides a containerized device with comparable operational features, designed for portability and modular deployment, facilitating on-site remediation in remote locations.

The invention relates to the technical field of soil remediation, in particular to a movable soil remediation device which comprises a treatment box, and a partition plate is mounted in the treatment box to divide a cavity in the treatment box into a first treatment chamber and a second treatment chamber; the crushing and screening unit is used for crushing stones in the soil and screening the soil; the thermal desorption unit is used for removing volatile pollutants in the soil, and the soil input end of the thermal desorption unit is in butt joint with the output end of the crushing and screening unit; the first conveying machine is used for conveying soil, and the input end of the first conveying unit is in butt joint with the soil output end of the thermal desorption unit; the oxidative degradation unit is used for carrying out oxidative degradation on pollutants in soil, and smashing and screening, thermal desorption and oxidative degradation are integrated into single equipment, so that the soil transfer link is reduced, and the remediation efficiency is improved; the integrated box body structure facilitates vehicle-mounted transfer and is suitable for on-site repair of various polluted sites.

The present invention discloses a monitoring method for an in-situ site remediation process, which uses the ratio of the heavy isotope and light isotope of the C element and the ratio of the heavy isotope and light isotope of the H element of the target pollutant as the coordinate axis, draws a C-H double isotope ratio difference analysis diagram by using the characteristic interval intercepted by a specific linear formula, and then draws the variation of the value obtained by sampling during the remediation process compared with the benchmark data in the C-H double isotope ratio difference analysis diagram, and monitors the in-situ site remediation effect according to its positional relationship with the characteristic interval. The present invention tracks the change of the carbon and hydrogen isotope abundance ratio of the target organic compound over time during the physical / chemical / biological process, thereby determining the main mechanism of action of the organic compound removal and degradation, and monitoring the remediation effect of the in-situ site remediation process.

The utility model belongs to soil remediation technical field provides a kind of farmland soil on-site remediation device, including support frame, and by upper and lower sequentially arranged on support frame mixing barrel, screening disc, catalytic cylinder;The mixing barrel rotatable is erected in the just above of screening disc, the screening disc top is provided with the feed inlet located the just below of mixing barrel, bottom is provided with the discharge port located the just above of catalytic cylinder, the catalytic cylinder includes the inner tube of top opening and the cover of detachable setting in top opening, the cover bottom is provided with a plurality of interval arrangement's ultraviolet lamp pearl.The utility model provides a kind of farmland soil on-site remediation device, simple structure is convenient for transfer transport, it is suitable for the on-site remediation of farmland soil, it is easy to operate to improve the efficiency of farmland soil on-site remediation, utilize ultraviolet light catalytic digestion pollutant in soil, avoid to cause secondary pollution to soil.

The invention relates to the field of water and soil pollution treatment, in particular to a method for reinforcing and fixing hexavalent chromium pollutants based on iron oxide in-situ vulcanization coupling organic matter, which comprises the following steps: step 1, injecting a vulcanizing agent into a hexavalent chromium polluted area, so that in-situ iron oxide minerals are subjected to vulcanization modification to generate modified minerals; 2, a natural organic acid solution is injected and reacts with the modified minerals, the fixing efficiency on hexavalent chromium is enhanced, and an iron sulfide oxide mineral-organic composite repairing material is generated in situ; and 3, the iron sulfide oxide mineral-organic composite repairing material reacts with hexavalent chromium, trivalent chromium precipitates are generated, and long-acting fixation of hexavalent chromium is achieved. The remediation efficiency and the application range of hexavalent chromium are remarkably improved, meanwhile, the method has the advantages of being simple and convenient in process, low in cost, environmentally friendly and the like, the method is particularly suitable for large-scale site remediation and practical engineering application, and a reliable technical means is provided for soil and underground water chromium pollution treatment.

The embodiment of the invention provides a heavy metal polluted site remediation full life cycle carbon emission calculation method and a low-carbon remediation technology determination method. The method comprises the steps that a remediation technology combination corresponding to a contaminated site is determined, a remediation process is determined based on the remediation technology combination, and the remediation process comprises a plurality of links corresponding to the remediation technology combination; in the remediation process of the contaminated site, artificial carbon emission information corresponding to each link and natural carbon emission information corresponding to the remediation process are determined; and according to the artificial carbon emission information and the natural carbon emission information corresponding to each link, determining a carbon emission parameter corresponding to the restoration technology combination. According to the method, man-made carbon emission information and natural carbon emission information in the restoration technology are combined and analyzed, and the accuracy of carbon emission data of the restoration technology is improved.

The invention discloses an underground water phenolic pollutant degradation agent as well as a preparation method and application thereof, and relates to the technical field of underground water phenolic pollutant degradation, the underground water phenolic pollutant degradation agent is prepared from the following natural components: humic acid, alumina minerals and a Fe < 2 + > solution. A green restoration technical framework based on natural iron circulation is constructed, the coordination environment of Fe < 2 + > is changed through the surface complexing effect of aluminum oxide, and the reaction activity is improved; through a humic acid mediated electron transfer path, the electron utilization efficiency of hydroxyl radicals (OH) generated by Fe < 2 + > activated oxygen molecules is improved, and the OH generation position is transferred into a solution from a solid-phase interface, so that efficient and green degradation of underground water phenol pollutants is realized; and engineering application of an in-situ chemical oxidation technology with low oxidant consumption in contaminated site remediation is promoted.

The invention provides a data management and control platform based on a polluted site restoration project. The data management and control platform comprises an intelligent construction site data server, a video monitoring data server and an intelligent construction site system, the intelligent construction site system comprises a video monitoring device and an excavation working face monitoring device. The video monitoring device is used for recording video monitoring data generated by video monitoring equipment arranged in a production area during construction of a polluted site restoration project, the video monitoring data server is used for storing the video monitoring data, and the intelligent construction site data server is used for calling the video monitoring data from the video monitoring data server; the excavation working face monitoring device is used for obtaining working face monitoring data of the polluted site restoration project in the project excavation working face excavation and acceptance stage, and the intelligent construction site data server is further used for storing and calling the working face monitoring data. According to the invention, systematic and professional digital management and control can be carried out on the polluted site remediation project, and accurate decision support is provided for the polluted site remediation project.

The application provides a simulation method for thermal conduction enhanced gas phase extraction of an organic contaminated site, comprising the following steps: S1, establishing a thermal conduction enhanced gas phase extraction finite element model; S2, meshing the thermal conduction enhanced gas phase extraction finite element model; S3, configuring corresponding parameters according to an actual site remediation process; S4, setting control calculation parameters for the thermal conduction enhanced gas phase extraction finite element model; S5, initializing the thermal conduction enhanced gas phase extraction finite element model under natural conditions; S6, assigning initial concentrations of pollutants to the thermal conduction enhanced gas phase extraction finite element model; and S7, executing a thermal conduction enhanced gas phase extraction numerical simulation program to realize remediation process simulation. The application solves the problem that the existing method cannot realize thermal conduction and gas phase extraction coupled remediation process simulation, can simulate the space-time distribution law of a temperature field and pollutants in a remediation process, and provides a reference and scientific basis for thermal conduction enhanced gas phase extraction remediation of an organic contaminated site.

The invention relates to a containerized method for the thermal treatment of contaminated solids, pasteous materials, and waste. The system comprises at least one thermally insulated container designed to minimize heat loss and enable material loading from a liftable top panel or a side panel, as well as at least one heat production unit featuring a burner control system and a combustion chamber capable of achieving oxidizing conditions for the complete destruction of contaminants. The method provides simultaneous thermal treatment of materials and vapor-phase contaminant destruction, supported by a ventilation system and a monitoring system for real-time adjustments. In a second aspect, the invention provides a containerized device with comparable operational features, designed for portability and modular deployment, facilitating on-site remediation in remote locations.

The invention discloses a remediation agent for chemically eroded polluted soil and application and a use method thereof in the technical field of environmental governance and site remediation, the remediation agent provided by the invention can synchronously fix heavy metals in the soil, adsorb and decompose organic pollutants and resist various chemical corrosion, the leaching toxicity of the polluted soil is reduced, and meanwhile, the remediation effect is good. And the repairing agent is wide in raw material source, simple and convenient to prepare and environment-friendly, so that the purpose of treating pollution with waste is achieved, and remarkable economic, environmental and engineering benefits are created.

The application provides a method and application of electrically powered staged enhanced microbial remediation, and belongs to the technical field of organic contaminated site remediation. The staged method comprises the following steps: providing a persistent high-intensity electric field in a pre-incubation stage to accelerate the reduction of the oxidation-reduction potential and the in-situ competitive electron acceptor content of the soil in-situ environment; providing a persistent medium-intensity electric field in a bacterial agent implantation stage to input suitable enriched culture into the bacterial agent implantation well, promote the migration of active functional microorganisms to the cathode, and form active functional groups in a larger range of soil; and providing an intermittent low-intensity electric field in a contaminant remediation stage to transport the contaminant to the functional group area through the low-intensity electric dialysis effect, prolong the overflow time, and make the contaminant be completely degraded under the biological reduction dehalogenation effect. The synergistic effect of the three stages greatly reduces the start-up time and the remediation time required for site remediation, improves the utilization rate of nutrient agents, the utilization rate of bacterial agents and the utilization rate of electric energy, and simultaneously realizes the efficient degradation of the contaminant.

The present application relates to a method, system and storage medium for revealing the law of contaminated site remediation, belonging to the field of contaminated site remediation technology, which includes determining the type information of the agent according to the detected pollutant type information; obtaining the pollutant concentration information, the agent concentration information and the injection time information; determining the total amount information of the unit target pollutant according to the soil environmental factor information and the pollutant concentration information; determining the pollutant removal rate information according to the total amount information of the unit target pollutant, the total amount information of the initial pollutant and the soil environmental factor information; determining the total amount information of the injected agent according to the soil environmental factor information, the agent concentration information and the injection time information; determining the total amount information of the reaction agent according to the soil environmental factor information, the agent concentration information, the injection time information and the total amount information of the injected agent; and determining the agent utilization rate information according to the total amount information of the injected agent and the total amount information of the reaction agent. The present application has the effect of improving the efficiency of revealing the law of contaminated site remediation.

The application discloses a carbon-based microbial agent for synchronously degrading halogenated organic compounds and passivating heavy metals, and a preparation method and application thereof. The carbon-based microbial agent comprises composite microorganisms and biochar, the composite microorganisms comprise chitin bacteria, bacillus, achromobacter, methyl bacillus, sphingomonas and microbacterium, and the composite microorganisms are attached to the surface of the biochar. The preparation method of the carbon-based microbial agent is that six kinds of microbial strains are inoculated into culture media containing pollutants respectively, and after screening and domestication, the carbon-based microbial agent is obtained by incubating the six kinds of microbial strains with the biochar. The carbon-based microbial agent can synchronously degrade halogenated organic compounds and passivate heavy metals, the degradation rate of BDE-47 in actual electronic waste disassembly area composite contaminated soil can reach 89.60%, the degradation rate of PCB 180 can reach 94.99%, the passivation rates of lead and cadmium can reach 76.39% and 90.37% respectively, and the carbon-based microbial agent is suitable for heavy metal-organic compound composite contaminated site remediation.

The invention relates to the technical field of contaminated site remediation, and particularly discloses an in-situ microbial remediation method for heavy metal contaminated sites of in-production enterprises, which comprises the following steps: step 1, screening and separating target microorganisms; 2, screening the obtained target strains; 3, carrying out characteristic research and laboratory scale simulation experiment on the dominant strains; step 4, carrying out microorganism amplification culture and optimization; and step 5, implementing an actual site repair project. According to the method, in-situ remediation can be achieved, interference on normal production is effectively avoided, the method has the advantages of being high in adaptability and specificity, specific strains can be screened out for specific pollutants for rapid remediation, and the whole method is safe, environmentally friendly, economical and efficient.

The invention discloses a method for preparing repair soil based on grading synergy of graphite ore dressing tailing sand and coal gangue and application, and relates to the technical field of solid waste recycling and soil repair. The method comprises the following steps: 1, carrying out targeted pretreatment and quality-divided modification on the graphite ore dressing tailing sand; 2, carrying out multistage purification and value-added treatment on the coal gangue; 3, after physical-chemical coupling pretreatment, inoculating a composite flora, and adopting variable-power microwave to assist activation; 4, adding red mud-humic acid microspheres and coal gangue ceramsite to strengthen the function; the remediation soil is used for heavy metal polluted farmland remediation or mining subsidence land ecological reconstruction. The total solid waste mixing amount is larger than or equal to 90%, the remediation soil has the functions of structure supporting, heavy metal passivation and nutrient maintaining, energy consumption is reduced by 60% or above compared with the prior art, the remediation soil is suitable for contaminated site remediation and mining area reconstruction, and the problems that in the prior art, the function is single, energy consumption is high, and pollution risks exist are solved.

The invention provides a sustainable evaluation method and system for a contaminated site remediation technology, and relates to the technical field of contaminated site remediation technology assessment, and the method comprises the steps: obtaining a plurality of alternative remediation schemes of a contaminated site and sustainable evaluation index data of the alternative remediation schemes; constructing a decision matrix based on the sustainability index data; standardizing the decision matrix to obtain a standardized weighting matrix; based on the standardized weighting matrix, determining an optimal and worst ideal scheme through an adaptive genetic algorithm; respectively calculating Euclidean distances between each alternative repair scheme and the optimal and worst ideal schemes; calculating the relative proximity between the optimal ideal scheme and the worst ideal scheme; based on the Euclidean distance calculation result, determining a comprehensive similarity score of each alternative repair scheme; and according to the relative proximity and the comprehensive similarity score, carrying out sustainable evaluation on the remediation technology of each polluted site.

The application discloses a contaminated site remediation method and a degradation period evaluation method, and comprises the following steps: step 1, determining a pollution range, setting a sampling point in the contaminated site, taking a groundwater sample at the sampling point, and measuring the concentration of an electron acceptor and the concentration of a degradation product; step 2, according to the measured concentrations of various indexes at different periods, calculating the cumulative percentage of various indexes at different periods, taking the concentration of the electron acceptor or the concentration of the degradation product as the horizontal coordinate, and the corresponding cumulative probability as the vertical coordinate, and drawing a cumulative probability distribution curve of each monitoring index; step 3, threshold range acquisition: according to the cumulative probability distribution curves of different electron acceptors or degradation products obtained in step 2, the threshold range of the stable section of different electron acceptors or degradation products is acquired; step 4, calculating the degradation capacity; and step 4, calculating the aquifer biodegradation rate. The method is specific for utilizing the conversion relationship between the electron acceptor and the pollutants, and can quantitatively evaluate the degradation capacity and the degradation rate of the pollutants.

According to the low-permeability medium radionuclide migration multi-parameter synchronous testing device and method, synchronous acquisition of multiple parameters such as the starting pressure gradient lambda, the critical pressure gradient Ge, the permeability coefficient K, the nonlinear index alpha, the distribution coefficient Kd and the vertical dispersion alpha L can be achieved, and the parameter consistency is improved; and system data support is provided for nuclide migration rule analysis. The device provided by the invention can simulate a geological environment with a deep part of more than 500m, and can perform simulation test on migration parameters of key radionuclides such as Cs-137, Co-60, Sr-90, Ni-63, Pu-238 and the like in typical low-permeability rock and soil media such as granite, compact sandstone, argillaceous shale and the like in a preselection area of a low-level waste disposal site in China; test data can be directly used for site selection evaluation of a disposal site, nuclear pollution site repair scheme optimization and other engineering scenes.

The invention relates to the related technical field of sludge pollution control equipment, discloses a heavy metal pollution sludge engineering field repair treatment device and a treatment method thereof, and aims to solve the problem that a filter cake on a filter plate is not easy to fall off. According to the sludge filter pressing device, the filter frames are guaranteed to have higher pressing force in the sludge filter pressing process, and in the process that the filter frames are pulled one by one through the hydraulic cylinder and the driving rod and are separated, the driving rod drags the filter frames one by one, so that the tension spring between the dragged filter frame and the previous filter frame is stretched; when the driving rod is released, the two filter frames collide with each other, so that a filter cake between the filter frames can be conveniently separated, and when the driving rod pulls the next filter frame, the driving rod can pull the previous collided filter frame again, and the adjacent tension springs are pulled, so that the filter frames are ensured to be collided for multiple times; the filter cake is vibrated frequently and falls off.

The present invention discloses a method for in-situ remediation of groundwater, comprising the steps of moving a mobile carrier to a target location, drilling a remediation well at the target location, and preparing a reagent, delivering the reagent, and the like. The equipment structure adopted in this method is simple, and the mobile carrier can be used to move and transport the contaminated location for in-situ remediation. There is no need to build large-scale special equipment or factory buildings, and the land area requirement is low. In-situ remediation can be achieved, and the site remediation project can be completed quickly and flexibly. A diffuser is provided, and a reagent channel and a mixing channel are provided in the diffuser, so that the underground contaminated water layer has fluidity in a certain direction, which can effectively improve the diffusion efficiency of the reagent. The reagent can be mixed with water in the reagent channel to improve the solubility of the reagent. The outlet position of the reagent channel and the inlet position of the mixing channel are respectively provided with a filter layer, and a vibration plate is provided to shake off some particles adhering to the filter layer to prevent the filter layer from being blocked.

The utility model discloses polluted site repairing equipment which comprises a base plate and a lime cylinder, the top of the base plate is connected with the lime cylinder through supporting legs, the base plate is provided with a fixing box on one side of the lime cylinder, the top of the lime cylinder is movably connected with a stirring shaft through a bearing, and the bottom of the lime cylinder is connected with a discharging cylinder in a penetrating mode. The bottom of the discharging barrel is connected with a discharging seat, a vibration assembly for knocking and vibrating the discharging seat is arranged in the fixing box, and the vibration assembly comprises a rack plate for knocking the discharging seat in a reciprocating mode. Lime powder in the discharging base cannot be blocked in a pipeline during discharging, the stirring shaft is synchronously linked to conduct mixing and stirring in the lime barrel, the lime powder in the lime barrel is scattered and mixed, stable discharging of the lime powder is improved, and structural connection is stable and smooth.

The utility model relates to the technical field of contaminated site remediation, and discloses mixed contaminated site soil site remediation equipment which comprises a shell, a servo motor is fixedly connected to the front side of the shell, a crushing roller is fixedly connected to the output end of the servo motor, and the rear side of the crushing roller is rotationally connected to the rear side of the inner wall of the shell. A crushing plate is fixedly connected to the left side of the inner wall of the shell, a rotating column is rotatably connected to the right side of the crushing plate, a filter plate is fixedly connected to the right side of the rotating column, fixing plates are fixedly connected to the front end and the rear end of the right side of the inner wall of the shell, and vibration motors are fixedly connected to the top walls of the fixing plates. According to the soil screening and repairing device, crushed soil is screened through the filter plate, impurities which are not completely crushed are left on the top wall of the filter plate, the impurities which are not completely crushed are bounced upwards through vibration of the filter plate and then can be repeatedly crushed by the crushing rollers rotating in the opposite direction, and the soil screening and repairing effect is improved.