584 results about "Soil treatment" patented technology

The invention provides a flow-state solidified soil mixing construction method based on automatic adjustment of proportioning parameters, belongs to the technical field of flow-state solidified soil, and realizes intelligent control of a flow-state solidified soil mixing process by establishing a three-section type precise screening and stirring system and a high-precision automatic control system. According to the method, firstly, target performance parameters are input, and an optimal matching scheme is automatically selected through a multi-target optimization algorithm; starting an original soil treatment unit to perform soil material dispersion treatment and measuring the physical characteristics of the soil material; adding the raw materials according to the accurate measurement, and fully mixing; when it is detected that the performance of the mixture deviates from a target value, the system automatically triggers a parameter compensation mechanism for adjustment; and meanwhile, a material ratio fluctuation early warning system is established, so that uneven mixture quality caused by starting and stopping of equipment or material conveying delay is avoided, and the technical problem that in the prior art, matching parameters are difficult to accurately regulate and control in real time in the mixing process of the flow-state solidified soil is solved.

The invention provides a biochar composite porous material for heavy metal contaminated soil remediation and a preparation method and application of the biochar composite porous material. The preparation method comprises the steps that biomass raw materials are subjected to high-temperature pyrolysis carbonization and then smashed, ground and sieved, and biochar powder is obtained; dispersing in a phosphoric acid solution to obtain a biochar solution, and filtering, washing and drying after a hydrothermal activation reaction to obtain activated biochar; dispersing in a chitosan solution, carrying out ultrasonic oscillation, filtering, washing and drying to obtain modified charcoal; mixing sodium bentonite, attapulgite and deionized water, uniformly mixing the modified charcoal, the functional slurry and a sodium carboxymethyl cellulose solution to obtain composite slurry, performing compression molding to obtain a green body, and then drying and calcining the green body. The biochar composite porous material prepared by the invention can simultaneously play multiple roles of physical adsorption, chemical chelation, ion exchange and the like in a heavy metal contaminated soil treatment process, so that efficient fixation of various heavy metal ions is realized.

The invention relates to the technical field of expansive soil treatment, and particularly discloses an expansive soil rapid hardening material as well as a preparation method and application thereof. The invention discloses an expansive type rapid hardening material for soil. The expansive type rapid hardening material is prepared from the following components: high belite sulphoaluminate cement clinker, ordinary Portland cement, gypsum, solid waste high-activity superfine powder, a nano crystal nucleus induction activating agent, a nano modified complexing agent and a modified early strength agent, the nano crystal nucleus induction activating agent is prepared from nano Al2O3, sodium dodecyl benzene sulfonate, NaOH and Na2SiO3; the nano modified complexing agent is prepared from nano SiO2, lauryl sodium sulfate and silane; the modified early strength agent is prepared from modified graphene oxide, Na2SiO3 and water. According to the technical scheme, the solid waste can be recycled, the expansive soil treated by the hardening material can achieve the effects of high hour strength and good water stability, and the curing speed and the production efficiency are greatly improved.

The invention discloses a power grid tower footing area vegetation restoration method based on biological source humic acid and application of the power grid tower footing area vegetation restoration method, and belongs to the technical field of ecological restoration and soil treatment. The technology aims at solving the problems of soil erosion and loss caused by environmental disturbance conditions such as vegetation damage in power grid construction, and the technical scheme mainly comprises the steps of adopting a soil improvement technology based on HFA or combining the HFA with other bio-fertilizers for use, and configuring a formula for plants suitable for planting and a vegetation management strategy. The method mainly comprises the following steps: measuring various physical and chemical factors of a soil sample around a tower footing, comparing the physical and chemical factors with an average (normal) value of local soil, and formulating the HFA use amount and concentration according to the results; investigating site conditions such as local weather, terrain, soil properties and the like, native plants and suitable plants, and formulating a plant planting formula and a comprehensive vegetation management scheme capable of iteratively growing in different seasons. According to the method, the vegetation restoration speed and environmental protection are both considered, and vegetation restoration and ecological environment improvement can be rapidly achieved.

The invention discloses a method and a device for treating soil heavy metal pollutants by an electroosmosis technology, and relates to the technical field of soil pollution treatment and remediation, and the method comprises the following steps: constructing an electroosmosis system, a liquid injection system and a pumping drainage system; liquid injection and pumping drainage are conducted, electroosmosis enhancer liquid medicine is injected into the soil, and meanwhile the liquid is pumped drainage till the concentration of the electroosmosis enhancer in the pumped drainage liquid reaches the preset requirement; soaking and electroosmosis are carried out; sampling detection is conducted, and liquid pumping sampling is conducted on the soil in the to-be-treated area till the pollutant residual concentration meets the preset requirement; water injection and pumping drainage are conducted, clear water is injected into the soil, meanwhile, liquid is pumped drainage, and soil treatment is finished until the concentration of the electroosmosis enhancer in the pumped drainage liquid is smaller than or equal to the preset concentration limit value. According to the method, a proper amount of electroosmosis enhancer liquid medicine is injected, heavy metal pollutants are dissociated through the electroosmosis effect and pumped and discharged to the hazardous waste pool, and heavy metal in soil is efficiently and reliably reduced.

The invention provides a shield contaminated soil treatment device and a using method thereof, the shield contaminated soil treatment device comprises a stirring shell, a driving shaft and a grinding part arranged on the driving shaft in a linkage and sleeving mode, the grinding part divides the interior of the stirring shell into a grinding cavity and a stirring cavity which are distributed up and down, and a plurality of liquid pumping holes corresponding to the grinding cavity are formed in the side wall of the driving shaft in a penetrating mode; the stirring assembly is arranged in the stirring cavity, the stirring assembly comprises a stirring part which is in linkage with the driving shaft in a sleeving mode and a linkage assembly which is connected with the grinding part and the stirring part, the stirring part and the driving shaft are sequentially communicated to form a liquid pumping channel which is connected with the stirring cavity and the liquid pumping hole, and a first-stage one-way valve part is arranged in the stirring part in a spaced mode; a second-stage one-way valve located below the liquid pumping hole is arranged in the driving shaft in a spaced mode, and the first-stage one-way valve and the second-stage one-way valve divide the liquid pumping channel into a first liquid pumping area, a second liquid pumping area and a third liquid pumping area from bottom to top. The solid medicine dissolving sufficiency can be improved, and the medicine effect is prevented from being affected by wrong medicine proportioning.

The invention relates to a solid-liquid mixture particle screening, grading and applying device, and belongs to the technical field of soil treatment. The device comprises a screening box body with an inlet and an outlet, multiple stages of screening mechanisms are sequentially arranged in the box body, and each stage comprises an inclined screening plate and a driving assembly; the sieve plate is linked with the swing connecting rod through the eccentric wheel to achieve digging, transporting and throwing actions, the sizes of meshes are gradually reduced to separate particles with different particle sizes, and oversize materials are conveyed to the independent applying and scattering openings through the corresponding screw rod bins. In the working process of the device, small particles preferentially improve the soil through bottom layer screening, and large particles enhance the wind and sand resistance through the surface application layer, so that the soil fertility improvement and sand stabilization effects are synchronously achieved. Through the optimal design of the swing path of the sieve plate and the precise material conveying of the screw bin, the problem that a solid-liquid mixture is difficult to layer and cover in desertification control is solved, the sorting efficiency and the spreading uniformity are improved, and the device has the characteristics of being compact in structure, reliable in driving and high in applicability, and is suitable for large-scale control of desertification and saline-alkali soil.

The invention provides application of 3-methyl-2-oxazolidinone as a nitrification inhibitor and a nitrification inhibition method, and relates to the technical field of soil treatment. Specifically, the invention relates to application of 3-methyl-2-oxazolidinone as a nitrification inhibitor in soil treatment and / or sewage treatment and inhibition of nitrosation activity of ammonia oxidizing bacteria. The method for inhibiting nitrification comprises the step of treating soil or water containing ammonium nitrogen and ammonia oxidizing bacteria by using 3-methyl-2-oxazolidinone. The concentration of the 3-methyl-2-oxazolidinone is not less than 0.01% w / v by taking the volume of the soil or the water body as 100%. The nitrification inhibition activity of the 3-methyl-2-oxazolidinone is found, so that the variety selection of nitrification inhibitors is enriched.

The invention relates to the technical field of rotary cultivators, in particular to a rotary cultivator with a residual film recycling function. Comprising a front wheel; first rotating shafts are fixedly connected to one sides of the two front wheels, second rotating shafts are fixedly connected to one sides of the two rear wheels, a recycling machine shell is jointly and rotationally connected between the two first rotating shafts and the two second rotating shafts, and a tillage machine is arranged on one side of the recycling machine shell. Through cooperation of a water pump, a second threaded rod, a spraying bin and a spray head, broken films on a screen mesh plate can be dissolved, soil blocks can be decomposed, the problem that a large amount of time is spent on sorting residual films and straw by workers in the follow-up process is solved, a first motor, an air pump, a second motor and the water pump are controlled through a controller, and the working efficiency is improved. Complex residual film recovery and soil treatment processes are integrated into a highly automatic and intelligent operation system, the soil humidity, the residual film density and the impurity content are monitored in real time through a sensor, the suction force of an air pump and the water pressure of a water pump are intelligently adjusted, and soil moisture loss and energy consumption are reduced to the maximum extent while it is ensured that residual films are efficiently recovered.

The invention discloses a movable desert soil treatment machine with atomizing rollers high in front and low in rear. The movable desert soil treatment machine comprises a rack, a walking system and a desert soil atomizing system. The desert soil atomization system comprises an atomization bin plate, a front atomization roller and a rear atomization roller; the front atomization roller and the rear atomization roller are rotatably installed on the rack in the front-back direction and arranged in the atomization bin in pairs, and the top of the rear atomization roller is lower than the top of the front atomization roller. In the atomization process, the front atomization rolling wheel and the rear atomization rolling wheel bring the hard and fast objects into an atomization mixing space between the inner wall of the atomization bin and the upper portion of the atomization rolling wheel through the atomization bin, and the hard and fast objects are retained in the atomization mixing space. As the top of the rear atomizing roller is lower than the top of the front atomizing roller, a rolling surface inclined backwards is formed on the upper part of the atomizing roller; and the inclined rolling surface can guide the retained hard and fast objects backwards, so that the retention of the hard and fast objects can be reduced, and the atomization mixing effect is improved.

The invention belongs to the field of soil treatment, and particularly relates to citric acid xanthan gum, a preparation method and application thereof and a wind prevention and sand fixation agent. The preparation method of the citric acid xanthan gum comprises the following steps: mixing xanthan gum and citric acid, adding a catalyst, and carrying out esterification reaction to obtain the citric acid xanthan gum. The citric acid is used for modifying the xanthan gum, so that the stability of the xanthan gum is enhanced, and the temperature influence change of the modified xanthan gum is effectively reduced. The raw materials for preparing the citric acid xanthan gum, such as citric acid and xanthan gum, are green, healthy, pollution-free and low in cost, and the preparation method is simple to operate.

The invention relates to the technical field of acid soil treatment and improvement, in particular to a soil conditioner suitable for acid yellow red soil and a soil improvement method. The soil conditioner provided by the invention is prepared from the following components in percentage by weight: 10 to 20 percent of humic acid loaded biochar, 40 to 50 percent of modified organic fertilizer, 15 to 25 percent of biogas residue, 8 to 12 percent of oyster shell powder, 3 to 5 percent of functional microbial agent and 2 to 3 percent of water-retaining agent. The soil conditioner disclosed by the invention can better improve acid soil, and meanwhile, compared with traditional lime, the soil conditioner disclosed by the invention has longer duration time.

The invention discloses a raise-boring surface soil treatment method which comprises the following steps: calibrating a raise-boring reaming boundary and an outer boundary of a raise-boring machine bearing platform on the ground, sequentially constructing an inner soil protection cast-in-place pile and an outer soil protection cast-in-place pile on the periphery of the raise-boring reaming boundary, and constructing a raise-boring machine bearing cast-in-place pile according to the shape of a raise-boring machine base. And finally, a raise boring machine bearing platform used for supporting the raise boring machine is poured at the designated position. By arranging the inner soil protecting cast-in-place piles and the outer soil protecting cast-in-place piles which form a circle in a surrounding mode, the surface soil layer is supported and strengthened, the raise boring machine is supported, it is guaranteed that a raise reamer bit smoothly expands holes, a large amount of manpower and material resources do not need to be consumed for processing the surface soil layer, and the construction difficulty and the construction cost are reduced; all the cast-in-place piles are drilled into the unweathered rock, pile heads of the cast-in-place piles are fixed by a raise boring machine bearing platform formed by casting, the two ends of the cast-in-place piles are fixed, and the supporting effect on the surface soil layer is further improved.

The invention discloses a method for improving saline alkali soil through organic-inorganic coupling, and relates to the technical field of soil treatment.The inner side of a series-connection whole supporting frame is equidistantly provided with a plurality of transposition motors through motor bases, output shafts of the transposition motors are connected with transposition gears in a clamped mode, and the top end of the series-connection whole supporting frame is rotationally connected with an integration gear; the device effectively solves the problems that in the prior art, inorganic materials and organic materials are directly put into soil, pre-desalination and dealkalization treatment is not carried out on the soil, the soil is not subjected to salt removal and alkali removal treatment, and the soil is not subjected to salt removal and alkali removal treatment, so that the soil is not subjected to salt removal and alkali removal treatment, and the soil is not subjected to salt removal and alkali removal treatment. The saline-alkali environment affects the reaction speed of inorganic materials and organic materials with the soil, and through pretreatment desalination and independent reaction of part of the inorganic materials, neutralization treatment and salt and alkali reduction treatment of the soil are achieved, so that the saline-alkali concentration of the soil is reduced, and the situation that the overall reaction speed is affected by high-concentration saline-alkali is avoided.

The utility model provides soil pollution treatment equipment, which relates to the technical field of soil treatment equipment and comprises a machine body, a storage barrel is arranged on one side of the machine body, a spray head is arranged on one side of the machine body, a rotating wheel is arranged at the bottom of the machine body, and an adjusting device is arranged between the machine body and the rotating wheel. A scattering device is arranged on one side of the machine body and comprises a connecting base, the connecting base is fixedly connected with the machine body, a motor is fixedly connected to one side of the connecting base, a first gear is fixedly connected to the output end of the motor, and the surface of the first gear is sleeved with a toothed chain; soil can be shoveled and scattered preferentially through the scattering device, then liquid medicine is scattered into the soil through the spray head, the situation that the liquid medicine is directly sprayed to the surface of the soil and cannot enter the deep position of the soil, the deep position of the soil cannot absorb the liquid medicine, and pollution treatment is affected is reduced, and the treatment efficiency of the deep position of the soil is improved.

The invention relates to the technical field of soil treatment, and provides a heavy metal contaminated soil treatment device which comprises a mounting plate, a treatment barrel is fixedly welded to the top end face of the mounting plate, a fixing frame is fixedly welded to the top end face of the treatment barrel, and a soil sampling backfilling assembly is mounted in the treatment barrel. A multifunctional processing assembly is installed in the processing cylinder, the soil taking and backfilling assembly comprises a servo motor and a conveying cylinder, a first smashing blade and a drilling cylinder are welded and fixed to the conveying cylinder, a cutting blade is welded and fixed to the bottom end face of the drilling cylinder, and the multifunctional processing assembly comprises a rotating frame and a first connecting pipe; a first through hole is formed in the first connecting pipe, and a second connecting pipe is fixedly connected to the first connecting pipe. By means of the technical scheme, the problems that in the prior art, a heavy metal contaminated soil treatment device cannot conduct deep treatment on soil in a contaminated area, and chemicals cannot be evenly mixed with the soil are solved.

The invention relates to the technical field of soil treatment, in particular to an integrated saline grainfield soil improvement and remediation method. According to the method, precise irrigation, concealed pipe drainage, salt-tolerant crop planting and bioremediation technologies are comprehensively applied, and systematic treatment of the salinized soil is achieved. Precise irrigation dynamically regulates and controls the leaching depth and frequency on the basis of real-time soil salinity and moisture data, the underground water level is intelligently controlled in combination with an underground pipe drainage network, salt accumulation is effectively reduced, and water resource waste is avoided; according to the salt-tolerant crop and green manure rotation mode, salt damage is reduced through plant salt absorption and root system nitrogen fixation, soil organic matter accumulation and microbial community reconstruction are promoted through application of a microbial agent and biochar, and a sustainable soil improvement mechanism is formed. The intelligent monitoring system integrates multiple types of sensors, collects key indexes such as salinity, nutrients and pH values in real time, predicts the salinization trend and regulates and controls irrigation, fertilization and drainage equipment in a linkage mode, full-process automatic management is achieved, and the management precision and efficiency are remarkably improved.

The invention discloses a spraying device for agricultural soil treatment. The spraying device comprises a frame, a spraying mechanism and a soil turning mechanism, the spraying mechanism comprises a support, a pipeline, a water pump, a water tank and a plurality of universal water spraying pipes; the support and the water tank are both installed on the vehicle frame, the water tank, the pipeline and the universal water spraying pipe are sequentially connected in the water flowing direction, and the pipeline is communicated with the water pump; the plurality of universal water spraying pipes are mounted on the support and are distributed at intervals in the horizontal circumferential direction of the support; the soil turning mechanism is installed on the vehicle frame and used for turning the soil sprayed by the spraying mechanism. The spraying device for agricultural soil treatment can turn soil while spraying pesticide in multiple directions.

The invention discloses a rice cultivation method capable of effectively preventing low-temperature cold damage, and relates to the technical field of agricultural planting. The method aims at solving the problems that the low-temperature-resistant potential of seeds cannot be brought into full play, plough layer conditioning measures are not meticulous enough, and personalized schemes for different soil types and low-temperature environments cannot be achieved. Through technical measures of rice germplasm treatment, cultivation soil treatment, field management and the like, the cold resistance of the rice is effectively improved, the rice can still keep a good growth condition in low-temperature cold damage weather, meanwhile, the soil quality is improved, a foundation is laid for sustainable agricultural development, and the method is worthy of popularization and application. Through low-temperature climate data analysis, early warning system establishment and emergency response mechanism matching, the stability and risk resistance of agricultural production are improved, innovation and development of a rice planting technology are promoted, the rice quality is improved, the requirement of the market for high-quality rice is met, and higher economic benefits are brought to farmers.

The subject invention provides compositions and methods for reducing the carbon footprint of producing biofuels. Microbe-based soil treatment compositions are utilized to reduce greenhouse gas emissions resulting from the agricultural practices of producing feedstock crops.

The invention relates to the technical field of environmental remediation, in particular to an in-situ soil perfluorinated compound remediation method and system.The method comprises the following steps that electrochemical targeted enrichment is conducted, applying a pulse type direct-current electric field to the anode and the cathode to drive anionic PFAS in the soil to migrate and enrich towards an anode area; in the anode area, the temperature of anode soil is increased, composite peroxide and a chemical activator are continuously injected, and perfluorinated compounds enriched in the anode are oxidized and degraded; and microbial polishing and ecological restoration: stopping the electric field, carrying out post-treatment on the anode region, adding a microbial agent and a nutritional agent into the anode region, and carrying out biodegradation on residual perfluorinated compounds or degradation intermediate products thereof. Through systematic design of physical field guidance, targeted energy injection, multiple catalytic oxidation and ecological function reconstruction, in-situ soil treatment is achieved, and the core problem in PFAS in-situ remediation is precisely solved.

The invention provides a purification device for treating soil heavy metal pollution, and belongs to the technical field of soil treatment, the purification device comprises a treatment frame assembly, an inner reaction barrel assembly, a vibration material dispersing assembly, a raking component, a medicament spraying assembly, a lifting component, a discharging opening and closing assembly and a discharging assembly, soil can be conveyed to the vibration barrel while crushing teeth are utilized to crush the soil in advance, the vibration barrel is driven to move up and down in a reciprocating mode in a rotating state through cooperation of a curved-surface circumferential sliding way of a unique structure and a sliding wheel, and the raking component is used in a combined mode, so that the raking effect is improved. The soil before treatment can be efficiently and multiply crushed; the pesticide spraying assembly and the lifting component are used together, so that pesticide uniform scattering action can be performed on soil particles falling into the reaction barrel, and uniform mixing is realized; and the discharging opening and closing assembly is matched with the discharging assembly, so that automatic discharging work can be realized on the basis of safety.

The invention belongs to the field of foundation engineering construction, and provides a building foundation engineering construction method which comprises the following steps: S1, geological improvement, cushion construction and expansive soil treatment; s2, prefabricated foundation components are assembled; s3, intelligent reinforcement cage construction; s4, concrete pouring and curing; and S5, performing quality verification and data archiving. The lime and coal ash mixed curing layer is adopted to inhibit ion exchange expansion, the expansion coefficient of expansive soil is reduced, liquid water permeation is blocked through the breathable film, gaseous water diffusion is allowed, damage to a film body caused by air pressure is reduced, temperature rise and deformation data are fed back in real time through the sensor network embedded in the reinforcement cage, pouring parameters are dynamically adjusted, and the construction quality is improved. A point cloud model is generated through three-dimensional laser scanning, an acceptance report is generated by comparing with BIM design deviation, manual measurement is replaced, the acceptance efficiency is higher, and whole-process intelligent monitoring can be achieved.

The utility model discloses a movable desert soil treatment machine which comprises a machine frame, a walking system and a desert soil atomization system. The desert soil atomization system comprises two atomization rollers; the device further comprises a lifting support and a hydraulic system. The atomizing roller is mounted on the lifting bracket; the hydraulic system comprises a roller power hydraulic element, a lifting hydraulic element, an oil pressure detector, a lifting electric control valve and a controller; the roller power hydraulic element drives the atomization roller to rotate; the lifting hydraulic element drives the lifting bracket to lift; the lifting electric control valve is connected between the lifting hydraulic element and the hydraulic oil source; the detection end of the oil pressure detector is connected with a driving oil path of the roller power hydraulic element, and the signal output end is in signal connection with the signal end of the controller; the control end of the controller is in signal connection with the lifting electric control valve so as to control the lifting electric control valve. According to the movable desert soil processor, the atomization rollers can be prevented from being trapped or stuck, shutdown operation is reduced, and the processing efficiency and reliability of the movable desert soil processor are improved.

The utility model provides a soil crushing device for soil treatment, which relates to the technical field of soil treatment, including a box body, wherein the interior of the box body is respectively provided with a connecting groove, a breaking groove and a discharging groove from top to bottom, and a conveying mechanism is installed at the upper end of one side of the box body, wherein the conveying mechanism is connected to the connecting groove, and a crushing mechanism is installed inside the box body. In the utility model, after the user places the raw material on the surface of the conveyor belt along the feed port, the conveyor belt drives the raw material to move to the lower end of the fixed frame, and the hot air blower blows the high-temperature air evenly on the surface of the raw material through the groove and the guide frame, so as to dry the raw material, reduce the moisture and viscosity of the raw material, and facilitate the crushing process in the later stage, and then after the drying of the raw material is completed, and when it moves to the interior of the connecting groove with the conveyor belt, the separation block will separate the raw material from the conveyor belt, so that the raw material can be crushed, and at the same time, the raw material will not stick to the surface of the conveyor belt.

The invention discloses a red mud artificial soil reconstruction method based on biomass and fly ash, which is used for performing soil treatment on red mud and comprises the following steps: pretreating the red mud; the method comprises the following steps: mixing biomass and an inorganic material to serve as an additive material, and performing pretreatment; adding materials into the red mud and then culturing. According to the method, the biomass and the inorganic material are mixed to serve as the additive material, pretreatment is conducted, and therefore the red mud can be effectively treated, and vegetation reconstruction and ecological restoration of the red mud storage yard are achieved.

The invention discloses a method for in-situ passivation of available cadmium in soil, and belongs to the technical field of heavy metal contaminated soil treatment. According to the method, the fulvic acid with the molecular weight being 100 kDa or above is applied to the acid mining area soil with the pH being 2-4.5 according to the adding amount of 3-20 gC / kg, the low-concentration cadmium pollution of the source being 4 mg / kg or below is removed, the concentration of effective-state cadmium is reduced, the cost is saved, the natural substance fulvic acid is used as the remediation agent, operation is easy and convenient, and the method is suitable for remediation of various mining area soil.

The soil treatment device comprises a frame and a grinding base fixedly installed at the upper end of the frame, the upper end of the grinding base is rotationally connected with a grinding disc, and the upper end of the grinding base is fixedly connected with a power input rod; by arranging the transmission seats with different transmission ratios and cooperating with a plurality of oscillating rods with different frequencies, the rotary power of the grinding mechanism can be guided and converted into vertical reciprocating oscillating motion, and a plurality of oscillating transmission cylinders are utilized to drive a plurality of sieve plates to vibrate and shake with various frequencies, so that the corresponding screening operation is efficiently completed, and the screening efficiency is improved. Meanwhile, a dust collecting system is arranged in the dust collector, and a knocking handle is linked by utilizing an abutting cone during the working period of the dust collector, so that the knocking handle can perform knocking operation on a dust collecting filter screen of the dust collector by utilizing oscillation impact force of oscillation rods with different frequencies, dust attached to the surface of the dust collecting filter screen is forced to fall off, and the efficient dust collecting effect is achieved.

The utility model relates to the technical field of soil treatment equipment, in particular to a nutrient soil continuous mixing machine which comprises a supporting frame used for supporting the mixing machine, a mixing barrel inclined by 10 degrees is arranged above the supporting frame, and a comb plate distributed in a spiral mode is arranged in the mixing barrel. And the mixing cylinder is used for receiving materials. According to the mixing device disclosed by the utility model, the mixing barrel, the comb plates and the driving motor are mutually matched, when the driving motor drives the mixing barrel to rotate, the comb plates are spirally arranged and welded on the inner wall of the mixing barrel, and the comb plates and the inner wall of the mixing barrel form a uniform certain included angle when being fixed; the comb plate is arranged in the mixing barrel, so that materials can flow in the mixing barrel in a spiral track under the guidance of the comb plate, and the materials can be sheared, stretched and folded by the comb plate in different directions and angles during flowing, so that the materials can be stirred more uniformly, and the mixing uniformity and the mixing efficiency are improved.

The invention discloses a recombinant bacillus paralicheniformis and an application of the recombinant bacillus paralicheniformis in production of betaine. According to the invention, bacillus paralicheniformis Bp1 with heavy metal cadmium resistance is used as a chassis strain, and an de novo synthesis pathway which takes glucose as a substrate and synthesizes glycine betaine through glycolysis, glyoxylic acid pathway and glycine methylation pathway in sequence is established in the bacillus paralicheniformis, so that the survival rate of the glycine betaine in cadmium-polluted soil is increased; the effects of the microbial soil treating agent and the microbial fertilizer are improved, so that the growth of the plant-black nightshade with an enrichment effect on cadmium and the absorption of the black nightshade on the cadmium in the polluted soil are promoted.