20 results about "Soil washing" patented technology

The invention relates to the technical field of soil leaching equipment, and discloses a leaching device and method for contaminated soil remediation, the leaching device comprises a base, and a leaching box is fixedly mounted at the top of the base. During use, polluted soil to be remediated falls above the filter plate after being put into the leaching box, the rotating ring can be driven to rotate under the action of the rotating mechanism, then the filter plate is driven to synchronously rotate under the action of the vibrating mechanism, and continuous reciprocating vibration is performed in the rotating process, so that the soil quickly penetrates through the filter plate, and the soil can be recovered under the action of the driving mechanism. The crushing mechanism crushes, rakes and scatters large soil, the filtering speed is further increased, the filtered soil is guided to the center position through the falling material concentration mechanism and then falls onto the spraying buffer mechanism, at the moment, a plurality of atomizing nozzles spray out leacheate to leach the soil, and through the action of the spraying buffer mechanism, the falling speed of the soil can be delayed, so that the soil quality is improved. The spraying contact area is increased, so that the leacheate is in full contact with the soil to complete leaching.

The invention relates to the technical field of soil leaching remediation equipment, in particular to movable soil leaching treatment equipment for agricultural land remediation. Comprising a carrier body, a conveying belt and a mixing barrel are fixedly mounted at the top of a frame of the carrier body, a crusher and a crushing mechanism are fixedly mounted at the top of the mixing barrel through a support, the crushing mechanism comprises a shell, rectangular mounting grooves are formed in vertical plates on the left side and the right side of the shell, and mounting shells are fixedly mounted in the mounting grooves through bolts; the crushing rollers of the moving group are driven to do upward arc reciprocating motion along the guide grooves, and meanwhile the crushing rollers of the static group are driven to rotate, so that a shearing space is formed, shearing force is used for replacing rubbing force to crush soil blocks, and meanwhile, upward arc motion is used for jacking up soil to reduce the falling density; therefore, the problems that in the prior art, soil blocks are prone to being rubbed into mud balls, and leaching agents are difficult to permeate are solved.

The present application relates to a kind of water treatment systems and applications for removing PFOA in soil washing wastewater by electrooxidation coupling hydrogen peroxide reduction, by preparing CF / FeCo-N-C with high H2O2RR activity as cathode, replacing traditional HER cathode reaction, improving cathode potential, reducing cathode polarization, reducing the input voltage and energy consumption of system.In addition, the water treatment system is also used for electrooxidation degradation of actual PFOA-containing soil washing wastewater, compared with prior art, the theoretical value of cathode potential can be increased from 0V vs.RHE of HER to 1.78V vs.RHE, realizing 1.02V of ultra-low thermodynamic equilibrium potential, realizing the significant reduction of energy consumption for deep treatment of PFOA-containing soil washing wastewater, providing new theoretical insights and practical significance for sustainable treatment of PFOA-containing soil washing wastewater, and providing a new technical mode for post-processing stage in soil remediation.

This utility model belongs to the field of soil pollution leaching, specifically a leaching device for soil pollution remediation. It includes a leaching apparatus with a double crushing mechanism at the top. The double crushing mechanism includes a holding shell, the bottom of which is fixedly connected to the top of the leaching apparatus, and a support plate fixedly connected to one side of the holding shell. This utility model uses a motor to drive a first synchronous wheel and a crushing roller to rotate. The crushing roller rotates and pounds the soil, crushing larger stones to prevent them from clogging the feed inlet and reducing leaching efficiency. The rotation of the first synchronous wheel drives a synchronous belt, which in turn drives a second synchronous wheel and a gear to rotate. The gear's rotation drives another gear to rotate relative to it, which in turn drives two crushing rollers to rotate relative to each other, further crushing the stones in the soil and improving the subsequent leaching efficiency.

The application discloses a new method for cleaning positively charged soil by using a CO2 / N2-responsive intelligent Bola surfactant, and belongs to the technical field of surfactant science and application. The cleaning process comprises the following steps: after a surfactant aqueous solution is mixed with contaminated soil and CO2 is introduced to react, an oil layer is separated, then solid-liquid separation is performed, N2 is introduced to react in the obtained water phase, and a recyclable surfactant aqueous solution is obtained. In the application, by introducing CO2 / N2, the tertiary amine group in the structure of the surfactant is intelligently converted between 'non-polar' and'strong polarity', namely 'active' and 'inactive'. The method can reduce the oil phase residual rate of the soil to below 0.3%, the deactivated surfactant completely enters the water phase, the quality of the oil phase is not affected, and the amount of the surfactant is small. The method realizes the recycling and recovery of the surfactant solution, and is conducive to achieving the environmental-friendly goals of chemical material reduction and water saving.

The present invention relates to a soil washing and remediation solubilizer, its preparation method and application, belonging to the technical field of soil chemical washing and remediation. The preparation method of the soil washing and remediation solubilizer of the present invention is as follows: (1) Dimethyl ethylenediamine and methyl 2-chloroacrylate are heated under reflux in a solvent, and after cooling, a mixed solution is obtained; (2) Acetone and water are added to the mixed solution and mixed evenly, the pH is adjusted to alkaline, and then lauramide is added for reaction and distillation to obtain an intermediate product; (3) An alkali solution is added to the intermediate product and mixed evenly, tannic acid is continuously added and heated for reaction, and after cooling, recrystallization is carried out to obtain the product. The soil washing and remediation solubilizer prepared by the above preparation method provided by the present invention can significantly improve the removal rate of uranium in uranium-contaminated soil by chemical washing agents, improve the washing and remediation efficiency of radioactive contaminated soil, and has high application value.

The application discloses a groundwater level observation device, which comprises a drilling assembly, a cleaning assembly is arranged at the upper end of the drilling assembly, a receiving assembly is arranged outside the cleaning assembly, a water level observation assembly is fixedly connected to the outside of the bottom end of the drilling assembly, the drilling assembly comprises a drilling cylinder, a fixing frame is fixedly sleeved at the bottom end of the drilling cylinder, three bolt shafts are threadedly and drivably sleeved outside the fixing frame, fixed screw blades are arranged at the bottom end shaft bodies of the bolt shafts, the water level observation assembly comprises a water level cylinder, a communication pipe is fixedly connected to the bottom end of the water level cylinder, the pipe body of the communication pipe is in communication with the drilling cylinder, a movable box is movably sleeved in the water level cylinder, an air pressure compartment is arranged in the movable box, a partition plate is fixedly installed in the movable box, a left electromagnet is fixedly connected to the left side surface of the partition plate, and a right electromagnet is fixedly connected to the right side surface of the partition plate. The groundwater level observation device has the soil cleaning function after drilling work, and has the intuitive observation structure of the groundwater level.

The invention discloses a soil cleaning agent and a preparation method thereof. The soil cleaning agent comprises a composite surfactant and pyridinium salt in a mass ratio of (15-25): 1, the composite surfactant comprises fatty alcohol-polyoxyethylene ether ammonium sulfate, sodium laureth sulfate and lauryl sodium sulfate in a mass ratio of 1: (1-3): (0.5-2); the pyridinium salt is prepared by carrying out nucleophilic substitution on 4 '-(4-pyridyl)-2.2': 6 '2 ''-terpyridyl and 5-bromomethyl-dimethyl isophthalate in a N, N-dimethyl formamide solvent. The invention further provides a combined contaminated soil cleaning method using the soil cleaning agent. According to the cleaning method for the combined polluted soil, the removal rate of the TPH after cleaning can reach 85% or above, the removal rate of all the heavy metals is 94% or above, and low-temperature short-process synchronous removal of the heavy metals and the petroleum hydrocarbons in the combined polluted soil is achieved.

The utility model discloses a soil flushing device. The soil flushing device comprises an injection pipe assembly, a linear driving mechanism and a first hinge seat, one side of the injection pipe assembly is hinged to the first hinge seat; the output end of the linear driving mechanism is connected with the other side of the injection pipe assembly. The injection pipe assembly is driven by the linear driving mechanism to rotate around the first hinge seat, so that the washing angle of the injection pipe assembly is adjusted, the washing position of soil is adjusted, and vertical swing of the washing position is achieved; the structure is simple, the working intensity of scouring can be reduced, and the working efficiency of scouring is improved.

The invention belongs to the technical field of soil remediation, and particularly relates to a soil heavy metal pollution treatment device which comprises a vehicle body, a crushing box, a skid-mounted support, a feeding conveying belt, a reagent pump machine, a stirring pulping cylinder, a dewatering screen, a synergistic elution box, a first discharging conveying belt, a water conveying pipe, a waste water box, a mud-water separator and a second discharging conveying belt. The crushing box is of a hopper-shaped structure, a coarse screen and a hammer type crushing mechanism are arranged at the inlet end of the crushing box, and soil and water in the stirring pulping cylinder are fully mixed and stirred. The agent pump is connected with the synergistic elution box, the synergistic elution box is connected with the mud-water separator and the waste water tank, the mud-water separator sends out standard fine particle soil through a second discharging conveying belt and sends waste water containing heavy metal to the waste water tank through a water conveying pipe, and the waste water tank is connected with the stirring pulping cylinder through the pump. The modularized skid-mounted structure is mainly adopted, a soil leaching system is modularly integrated, then transportation is conducted through a truck, the occupied area is small, and the treatment efficiency is high.

The utility model relates to the technical field of cleaning devices, in particular to a rhizosphere soil cleaning and collecting device which comprises a collecting box, a cover plate is installed above the collecting box, a through opening is formed in the surface of the cover plate, moving plates are connected to the two sides of the through opening in an inserted mode, a clamping screw rod is connected to the top face of the cover plate in a screwed mode and used for clamping the moving plates, and the clamping screw rod is used for clamping the moving plates. A stirrer is mounted on a bottom plate of the collecting box; the rhizosphere soil cleaning and collecting device has the advantages that the rhizosphere soil cleaning and collecting device can flexibly and effectively clamp the root system part of vegetation through the design of the clamping groove and the air bag on the movable plate. The clamping process is milder due to the flexible characteristic of the air bag, and damage to the root system in a traditional method is avoided. Meanwhile, due to the arrangement of a rubber pad, the clamping stability and the root system protection are further enhanced. The stirrer is introduced, so that the device can generate strong vortex water flow, and soil particles of vegetation roots are effectively scoured. The cleaning mode is efficient, and the complexity of manual operation can be reduced.

The invention relates to the technical field of muck washing and spraying wastewater treatment, in particular to a muck washing and spraying wastewater decrement purification system and method based on a freezing method, a freezing treatment device is used for receiving washing and spraying water precipitated and filtered by a precipitation filter cartridge, and the precipitation filter cartridge is used for removing solid particles in washing and spraying liquid; according to the invention, the sewage is treated by a freezing method, so that the sewage with complex components can be directly treated, the complexity of multi-stage treatment in the prior art is avoided, a relatively great resource utilization effect can be achieved, and the generated purified water can be considered to be reused for spraying or other links if the water quality reaches the standard, so that resource utilization is realized; formation of ice crystals is slowed down by disturbing water flow, the effect of guiding the icing direction is achieved, compared with the mode that icing guiding is conducted through local temperature rise, the utilization rate of a cold source is higher, the situation that local temperature rise influences the overall cooling speed is avoided, the device can act on a larger area, and the cooling efficiency is improved. The larger the acting area is, the lower the possibility of the ice crystal entrainment phenomenon is.

The present application relates to the technical field of foundation pit construction, in particular to a kind of foundation pit excavation sandy soil washing filtration purification separation system and method, it includes feeding device, separation device, sand washing device and dehydration device;The feeding device includes cleaning pool and chain bucket conveyor for transporting residual mud and slag soil in the cleaning pool to the separation device in one end in the cleaning pool, the separation device includes cylinder screen for screening and separating the particle size of residual mud and slag soil conveyed by chain bucket conveyor, the sand washing device is used to clean fine material screened by cylinder screen, and the dehydration device includes dehydration screen for vibration dehydration of fine sand cleaned by sand washing device, can separate mud and sand in the sandy soil excavated near foundation pit construction site, separated product sand can be reused, with significant economic benefits;And the waste mud and slag generated has high degree of reduction compared to transportation construction residual mud, and low water content, convenient transportation, greatly saves transportation cost.

The application relates to application of a CO2 / N2 response type multi-head base intelligent conversion surfactant in soil cleaning, and belongs to the technical field of surfactant science and application. The cleaning process comprises the following steps: mixing a surfactant aqueous solution with contaminated soil at room temperature; then blowing in CO2 until the pH of the water phase is about 6-7; separating an oil layer, blowing in N2 into the water phase, making the pH value reach 9-10, filtering to obtain purified soil, and the liquid phase is a surfactant aqueous solution; in the soil cleaning process, the surfactant shows excellent oil displacement effect, the oil phase residual rate of the soil is reduced to below 0.2%, the surfactant completely enters the water phase, is not left on the surface of the soil, and can be restored to a surface active state by blowing in nitrogen, so that the surfactant is recycled in the water phase, the surfactant solution is reused and recovered, the oil phase recovery rate reaches above 85%, and no surfactant is left in the oil phase; and the application is beneficial to realization of environmental friendly targets such as chemical material reduction and water saving.

The present invention relates to a method for manufacturing a silico-calcareous mineral filler, the filler comprising the following compounds per 100% by weight: CaCo3: 50%; SiO2: 25%; Al2Si2O5(OH)4 (kaolinite): 10%; KAl2(AlSi3O10)(OH)2 (muscovite): 10%; and MgCO3, Fe3O4, CaSO4.2H2O: 5%.

The invention provides a multi-stage screening and pollutant stripping soil leaching remediation device, and relates to the field of soil remediation device.The multi-stage screening and pollutant stripping soil leaching remediation device is used for screening soil soaked with a leaching agent and comprises a plurality of reaction tanks which are sequentially stacked and arranged from bottom to top; and two adjacent reaction tanks are communicated with each other. According to the multi-stage screening and pollutant stripping soil leaching remediation device, the multiple reaction tanks are arranged from bottom to top, and it is ensured that pollutants are thoroughly stripped from soil. The screening groove and the rubber plate are installed in the reaction tank, the effect that the screening groove is driven to jolt and vibrate up and down and soil is loosened through preliminary vibration is achieved, the contact probability of an eluting agent and the interior of the soil is increased, and the pollutant removing effect is improved. And subsequent continuous vibration achieves the draining effect, and the effect that the soil is separated from the eluting agent is improved. A traditional leaching and soaking mode is replaced, so that the soil can be in full contact with a leaching agent, the soil cleaning rhythm is accelerated, and the remediation efficiency is improved.

A soil desalination and salt control apparatus and method for a bank of a lake reservoir are provided. The apparatus includes a soil washing system and an auxiliary heating evaporation system; the soil washing system includes a desalination fabric laid on a surface of soil in a to-be-desalinated area, a washing pipeline set on the desalination fabric, and a washing water source connected to the washing pipeline.Washing holes are provided on a lower end side of the washing pipeline towards the desalination fabric. The auxiliary heating evaporation system includes an auxiliary heating circulation pipeline buried inside the soil of the to-be-desalinated area, and a heat source assembly and an auxiliary heating control system both connected to the auxiliary heating circulation pipeline. The burial depth of the auxiliary heating circulation pipeline is the desalination control depth of soil of the bank of the lake reservoir.

The utility model discloses an asphalt stone cleaning and conveying device which comprises a box body and a belt conveyor, supporting legs are installed on the periphery of the lower end of the box body, a discharging opening is formed in the lower end of the box body, the lower end of the box body is connected with a discharging cover corresponding to the discharging opening in position, and the belt conveyor is connected with the discharging cover. A discharging cover is arranged on the upper portion of the box body, a belt conveyor is arranged on the lower portion of the discharging cover, two supporting plates are installed in an inner cavity of the box body, and a rolling washing mechanism is jointly and rotationally connected between the two supporting plates. And meanwhile, spray nozzles are spirally arranged and mounted on the spray washing mechanism to spray water to wash the stone, so that water in a water pipe is effectively discharged from multiple angles at the same time, stone in different directions can be conveniently sprayed and washed, the impurity and soil washing efficiency is effectively improved, and the washing effect is improved.

The utility model relates to the technical field of scrubbing vehicles, and discloses a movable soil leaching scrubbing vehicle which comprises a vehicle body, the vehicle body is divided into a vehicle front part, a vehicle middle part and a vehicle rear part, and the vehicle front part comprises a feeding bin, a pre-screening device and a first belt conveyor; a belt conveyor II, a stirring feeder, a circulating water tank, a hydraulic pump station, an electric control cabinet and a filter tank are arranged in the middle of the vehicle; a scrubbing machine, an anti-splashing device, a dewatering screen, a third belt conveyor, a slurry temporary storage hopper and a mortar pump are arranged on the rear portion of the vehicle. All the components of the front part, the middle part and the rear part are intensively mounted on the chassis assembly to intensively form an integral system. According to the utility model, through the organic combination of a plurality of procedures, the characteristics of centralization, skid-mounted type and the like of the soil leaching and repairing equipment are realized. According to the utility model, the technical means of stirring, scrubbing, screening and the like are combined, polluted soil particles with different particle sizes are scrubbed and screened, and clean soil is screened out, so that the polluted soil is effectively reduced, and the target of treating and repairing the polluted soil is achieved.

A soil desalination and salt control apparatus and method for a bank of a lake reservoir are provided. The apparatus includes a soil washing system and an auxiliary heating evaporation system; the soil washing system includes a desalination fabric laid on a surface of soil in a to-be-desalinated area, a washing pipeline set on the desalination fabric, and a washing water source connected to the washing pipeline. Washing holes are provided on a lower end side of the washing pipeline towards the desalination fabric. The auxiliary heating evaporation system includes an auxiliary heating circulation pipeline buried inside the soil of the to-be-desalinated area, and a heat source assembly and an auxiliary heating control system both connected to the auxiliary heating circulation pipeline. The burial depth of the auxiliary heating circulation pipeline is the desalination control depth of soil of the bank of the lake reservoir.