CN110420982B - Ecological soil remediation method - Google Patents
Ecological soil remediation method Download PDFInfo
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- CN110420982B CN110420982B CN201910731933.0A CN201910731933A CN110420982B CN 110420982 B CN110420982 B CN 110420982B CN 201910731933 A CN201910731933 A CN 201910731933A CN 110420982 B CN110420982 B CN 110420982B
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- circular ring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
- B07B1/22—Revolving drums
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/4609—Constructional details of screens in general; Cleaning or heating of screens constructional details of screening surfaces or meshes
- B07B1/4636—Regulation of screen apertures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/06—Reclamation of contaminated soil thermally
- B09C1/065—Reclamation of contaminated soil thermally by pyrolysis
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Sampling And Sample Adjustment (AREA)
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention belongs to the technical field of soil remediation, and particularly relates to an ecological soil remediation method, wherein a drum screening machine adopted by the soil remediation method comprises a rack; a cylinder is fixedly connected to the frame, a discharge port is arranged at the bottom of the cylinder, and a feed hopper is fixedly connected to the frame at an opening at the upper end of the cylinder; a first circular ring is connected in the opening at the upper end of the cylinder in a sliding manner, and a second circular ring is connected in the opening at the other end of the cylinder in a rotating manner; a group of elastic rods are hinged between the first circular ring and the second circular ring, and a group of steel ropes is fixedly connected between the adjacent elastic rods; the invention can control different distances between the first circular ring and the second circular ring by clamping the handle into different U-shaped grooves, further control the arching height of the elastic rod, and obtain different mesh sizes by matching with the steel rope so as to adapt to the repairing and screening work of the soil with different particle diameters.
Description
Technical Field
The invention belongs to the technical field of soil remediation, and particularly relates to an ecological soil remediation method.
Background
The current problem of heavy metal pollution treatment is an environmental problem to be solved urgently in the world. The water pollution mainly refers to the pollution of water bodies (including rivers, lakes, reservoirs, oceans, industrial water, discharged water, domestic drinking water and the like) by heavy metal pollutants, including cadmium, lead, mercury, chromium, arsenic and the like, and the pollution source is mainly industrial wastewater, such as wastewater discharged by ore dressing plants, electroplating plants, steel plants and the like.
Besides the heavy metals contained in the soil, the heavy metals enter the soil due to pollution. The heavy metal pollution of soil mainly comes from various aspects: the settlement of heavy metals in the atmosphere, for example, exhaust gas discharged from industrial production, lead-containing automobile exhaust gas, and the like enter soil through natural settlement and rain settlement; the heavy metal-containing sewage is adopted for irrigation, so that the contents of Cd, As, Cu and the like in the soil are increased; in addition, plastic films for daily use and chemical fertilizers and pesticides for agricultural use also cause soil pollution. The common main organic pollutant polluted soil remediation technologies comprise biological remediation, chemical remediation, physical remediation and the like, the chemical remediation has wider applicability, and is particularly suitable for high-concentration and multi-component organic polluted sites.
In the existing soil remediation process, because the soil is insufficiently screened before leaching, the leaching efficiency is lower, a large amount of leacheate is consumed, and meanwhile, the plastic film cannot be effectively removed.
Disclosure of Invention
The invention provides an ecological soil remediation method, which aims to make up for the defects of the prior art and solve the problems that in the existing soil remediation process, due to insufficient screening of soil before leaching, leaching efficiency is low, a large amount of leacheate is consumed, and a plastic film cannot be effectively removed.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an ecological soil remediation method, which comprises the following steps:
s1, stirring the polluted soil and the quicklime together to change the polluted soil from block to particle, and screening impurities in the mixture of the polluted soil and the quicklime by a rotary screen;
s2, preheating the polluted soil treated in the step S1 by using smoke generated by fuel combustion of a thermal desorption device, and then putting the preheated polluted soil into the thermal desorption device for secondary heating;
s3, sequentially spraying cooling water, demisting and adsorbing active carbon on the mixed steam generated after secondary heating in S2, and then discharging the mixed steam into the atmosphere at high altitude; directly discharging the soil heated by S2;
s4, spraying water mist to the soil discharged in the S3, and humidifying and dedusting; and transporting the treated soil to a designated area;
the drum screening machine adopted in the invention comprises a frame; a cylinder is fixedly connected to the rack, and the included angle between the axis of the cylinder and the horizontal plane is 10-20 degrees; a discharge port is formed in the bottom of the cylinder, and a feed hopper is fixedly connected to the rack at the opening at the upper end of the cylinder; a first circular ring is connected in an opening at the upper end of the cylinder in a sliding manner, and a second circular ring is connected in an opening at the other end of the cylinder in a rotating manner; a group of elastic rods is hinged between the first circular ring and the second circular ring, and a group of steel ropes is fixedly connected between the adjacent elastic rods; one side of the second circular ring, which is far away from the elastic rod, is fixedly connected with an external fluted disc; a first bracket is arranged at the position of the cylinder close to the external fluted disc, and a motor is fixedly connected to the first bracket; a first gear fixedly connected with the output shaft of the motor is meshed with the external fluted disc, and the motor is connected with a power supply through a controller; one side of the first circular ring, which is far away from the elastic rod, is fixedly connected with a gland, and a flange plate is rotatably connected between the first circular ring and the gland; a rack is connected to the cylinder on one side of the flange plate, which is far away from the first circular ring, in a sliding manner, and one end of the rack is fixedly connected with the flange plate; a second gear is rotatably connected to the position, corresponding to the rack, on the cylinder and meshed with the rack; a handle is fixedly connected to the second gear, and a fan-shaped limiting disc is arranged on the cylinder corresponding to the handle; a pair of clamping grooves with U-shaped openings are formed in two ends of the outer edge of the limiting disc and used for clamping the handle; when the elastic rod is used, the handle is rotated anticlockwise and then clamped into the clamping groove, the handle drives the second gear to rotate so as to drive the rack to slide, the rack drives the flange plate to push the first circular ring after sliding, so that the distance between the first circular ring and the second circular ring is reduced, the elastic rod arches towards one side close to the inner wall of the cylinder under the extrusion of the first circular ring and the second circular ring, and the arched elastic rod is matched with the steel rope to form meshes; then a motor is started through a controller, an output shaft of the motor drives a first gear to further drive an external fluted disc to rotate, finally the external fluted disc drives a second ring and an elastic rod to rotate, so that a screen mesh consisting of the first ring, the elastic rod, a steel rope and the second ring rotates in a cylinder, at the moment, soil to be repaired containing stones is fed into the cylinder through a feed hopper, the soil in the soil to be repaired falls into the cylinder from meshes between the elastic rod and the steel rope, and the stones in the soil to be repaired are left in the screen mesh consisting of the elastic rod and the steel rope; after waiting to restore soil and screening completely, the soil that separates out carries out next stage after the discharge gate is collected and handles, the inside stone that leaves of screen cloth that elastic rod and steel cable are constituteed, take out the handle from the draw-in groove and clockwise rotation back card this moment in the draw-in groove of spacing dish opposite side, the handle is through No. two gears, the transmission of rack and flange dish, the round ring of pulling No. one for stretch after the elastic rod reconversion, because drum axle center and horizontal plane contained angle 10-20 degrees, the stone is discharged from the opening that the drum is close to the below under self gravity and elastic rod pivoted cooperation this moment, then transport away the processing with the stone.
Preferably, a group of U-shaped grooves are uniformly formed in the outer edge of the limiting disc between the two clamping grooves, the handle is clamped into different U-shaped grooves to control the distance between the first circular ring and the second circular ring, and then the size of meshes between the elastic rod and the steel rope is adjusted; the handle is clamped into different U-shaped grooves to control different distances between a first circular ring and a second circular ring, so that the arching height of the elastic rod is controlled, and different mesh sizes can be obtained by matching the steel rope, so that the repairing and screening work of soil with different particle diameters is adapted.
Preferably, a group of lantern rings are sleeved on the periphery of the screen mesh consisting of the elastic rod and the steel rope, and the lantern rings are used for preventing the elastic rod from excessively deforming; adopt the lantern ring can restrict the height that the elastic rod middle part arched, prevent that the elastic rod from excessively warping, also can prevent that the screen cloth mesh that elastic rod middle part and steel cable are constituteed is too big, adopts a set of lantern ring can make the elastic rod middle part highly uniform that arches, increases the number that the elastic rod middle part and steel cable formed the same big or small mesh, increases the screening efficiency who treats restoration soil.
Preferably, a cavity is formed in the elastic rod, a group of steel balls are arranged in the cavity, and the steel balls can freely roll in the cavity; when the soil to be repaired is in the screening process, the elastic rod continuously rotates with the first circular ring and the second circular ring, so that the steel balls in the cavity continuously roll, the steel balls collide with each other to generate vibration, the elastic rod continuously vibrates, and the screening efficiency of the soil to be repaired is further improved.
Preferably, the inner wall of the cavity is provided with a wavy bulge, and the bulge is used for increasing the vibration frequency of the steel ball; the wavy bulge can increase the collision frequency of the steel balls in the rolling process in the cavity, so that the vibration frequency of the elastic rod is increased, and the screening efficiency of the soil to be repaired is further increased.
Preferably, a second bracket is fixedly connected to the position, corresponding to the external fluted disc, of the cylinder, and a rotating shaft is rotatably connected to the second bracket; one end of the rotating shaft, which is close to the cylinder, is fixedly connected with a third gear, and the third gear is meshed with the external fluted disc; one side of the second support, which is far away from the cylinder, is fixedly connected with a third support, and the third support is rotatably connected with a fan; one end of the rotating shaft, which is far away from the third gear, drives the fan through a belt; one end of the second support, which is close to the fan, is fixedly connected with a steel wire mesh; drive No. three gear revolve when rotating through the fluted disc, and then it is rotatory to drive the fan through pivot and belt drive, opening part formation negative pressure near the lower part at the drum, and then bleed in to the drum, make the plastic film piece that the quality that is treated in the restoration soil adulterates is lighter by the suction in the drum, the plastic film piece adsorbs on the steel wire net behind fan suction drum, when treating that restoration soil screening finishes the back motor stall, the staff retrieves the aftertreatment with the plastic film piece of adhesion on the steel wire net, the impurity content of the soil of treating restoration has further been reduced.
The invention has the following beneficial effects:
1. according to the ecological soil remediation method, the handle is clamped into different U-shaped grooves, so that different distances between the first circular ring and the second circular ring can be controlled, the arching height of the elastic rod is further controlled, and different mesh sizes can be obtained by matching with the steel rope, so that the ecological soil remediation method is suitable for remediation and screening of soil with different particle diameters.
2. According to the ecological soil remediation method, the ring can limit the arching height of the middle part of the elastic rod, prevent the elastic rod from excessively deforming, and also prevent the screen mesh formed by the middle part of the elastic rod and the steel rope from being too large.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a flow chart of a method of the present invention;
FIG. 2 is a front view of the present invention employing a drum screen;
FIG. 3 is a perspective view of a drum in a drum screen of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 2 at A;
in the figure: the device comprises a frame 1, a cylinder 11, a discharge hole 12, a feed hopper 13, a first circular ring 2, a second circular ring 21, an elastic rod 3, a steel rope 31, an external toothed disc 22, a first support 14, a motor 15, a first gear 16, a gland 23, a flange plate 24, a rack 25, a second gear 26, a handle 27, a limiting disc 28, a clamping groove 29, a U-shaped groove 30, a steel rope 31, a lantern ring 32, a cavity 33, a steel ball 34, a protrusion 35, a second support 17, a rotating shaft 5, a third gear 51, a third support 18, a fan 52 and a steel wire mesh 53.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 4, the ecological soil remediation method according to the present invention includes the following steps:
s1, stirring the polluted soil and the quicklime together to change the polluted soil from block to particle, and screening impurities in the mixture of the polluted soil and the quicklime by a rotary screen;
s2, preheating the polluted soil treated in the step S1 by using smoke generated by fuel combustion of a thermal desorption device, and then putting the preheated polluted soil into the thermal desorption device for secondary heating;
s3, sequentially spraying cooling water, demisting and adsorbing active carbon on the mixed steam generated after secondary heating in S2, and then discharging the mixed steam into the atmosphere at high altitude; directly discharging the soil heated by S2;
s4, spraying water mist to the soil discharged in the S3, and humidifying and dedusting; and transporting the treated soil to a designated area;
the drum screening machine adopted in the invention comprises a frame 1; a cylinder 11 is fixedly connected to the frame 1, and an included angle between the axis of the cylinder 11 and the horizontal plane is 10-20 degrees; a discharge hole 12 is formed in the bottom of the cylinder 11, and a feed hopper 13 is fixedly connected to the frame 1 at an opening at the upper end of the cylinder 11; a first circular ring 2 is connected in an opening at the upper end of the cylinder 11 in a sliding manner, and a second circular ring 21 is connected in an opening at the other end of the cylinder 11 in a rotating manner; a group of elastic rods 3 are hinged between the first circular ring 2 and the second circular ring 21, and a group of steel ropes 31 are fixedly connected between the adjacent elastic rods 3; one side of the second circular ring 21, which is far away from the elastic rod 3, is fixedly connected with an external fluted disc 22; a first bracket 14 is arranged at the position of the cylinder 11 close to the external fluted disc 22, and a motor 15 is fixedly connected to the first bracket 14; a first gear 16 fixedly connected with an output shaft of the motor 15 is meshed with an external fluted disc 22, and the motor 15 is connected with a power supply through a controller; a gland 23 is fixedly connected to one side of the first ring 2, which is far away from the elastic rod 3, and a flange plate 24 is rotatably connected between the first ring 2 and the gland 23; a rack 25 is connected to the cylinder 11 on one side of the flange plate 24, which is far away from the first ring 2, in a sliding manner, and one end of the rack 25 is fixedly connected with the flange plate 24; a second gear 26 is rotatably connected to the position, corresponding to the rack 25, on the cylinder 11, and the second gear 26 is meshed with the rack 25; a handle 27 is fixedly connected to the second gear 26, and a fan-shaped limiting disc 28 is arranged on the cylinder 11 corresponding to the handle 27; a pair of clamping grooves 29 with U-shaped openings are formed in two ends of the outer edge of the limiting disc 28, and the clamping grooves 29 are used for clamping the handle 27; when the elastic rod type cylinder 11 is used, the handle 27 rotates anticlockwise and then is clamped into the clamping groove 29, the handle 27 drives the second gear 26 to rotate, the rack 25 is further driven to slide, the rack 25 drives the flange plate 24 to push the first circular ring 2 after sliding, the distance between the first circular ring 2 and the second circular ring 21 is further reduced, the elastic rod 3 arches towards one side close to the inner wall of the cylinder 11 under the extrusion of the first circular ring 2 and the second circular ring 21, and the arched elastic rod 3 is matched with the steel rope 31 to form meshes; then, a controller is used for starting a motor 15, an output shaft of the motor 15 drives a first gear 16 to further drive an external fluted disc 22 to rotate, and finally the external fluted disc 22 drives a second ring 21 and an elastic rod 3 to rotate, so that a screen mesh consisting of the first ring 2, the elastic rod 3, a steel rope 31 and the second ring 21 rotates in a cylinder 11, at the moment, soil to be repaired containing stones is conveyed into the cylinder 11 through a feed hopper 13, the soil in the soil to be repaired falls into the cylinder 11 from meshes between the elastic rod 3 and the steel rope 31, and the stones in the soil to be repaired are left inside the screen mesh consisting of the elastic rod 3 and the steel rope 31; after the soil to be repaired is completely screened, the separated soil is collected through the discharge hole 12 and then is processed in the next stage, stones are left in the screen mesh consisting of the elastic rod 3 and the steel rope 31, the handle 27 is taken out of the clamping groove 29 and is clamped into the clamping groove 29 on the other side of the limiting disc 28 after clockwise rotation, the handle 27 pulls the first ring 2 through the transmission of the second gear 26, the rack 25 and the flange disc 24, so that the elastic rod 3 is straightened after being restored, and because the included angle between the axis of the cylinder 11 and the horizontal plane is 10-20 degrees, the stones are discharged from the opening, close to the lower part, of the cylinder 11 under the matching of self gravity and the rotation of the elastic rod 3 at the moment, and then are transported away for processing.
As an embodiment of the invention, a group of U-shaped grooves 30 is uniformly formed in the outer edge of the limiting disc 28 between the two clamping grooves 29, the handle 27 is clamped into different U-shaped grooves 30 to control the distance between the first circular ring 2 and the second circular ring 21, and then the mesh size between the elastic rod 3 and the steel rope 31 is adjusted; the handle 27 is clamped into different U-shaped grooves 30 to control different distances between the first circular ring 2 and the second circular ring 21, so that the arching height of the elastic rod 3 is controlled, and different mesh sizes can be obtained by matching with the steel rope 31, so that the repairing and screening work of the soil with different particle diameters is adapted.
As an embodiment of the present invention, a set of collars 32 is sleeved on the periphery of the screen mesh composed of the elastic rods 3 and the steel ropes 31, and the collars 32 are used for preventing the elastic rods 3 from being excessively deformed; adopt lantern ring 32 can restrict the height that the elasticity pole 3 middle part arched, prevent that elasticity pole 3 excessively warp, also can prevent that the screen cloth mesh that elasticity pole 3 middle part and steel cable 31 constitute is too big, adopt a set of lantern ring 32 can make the elasticity pole 3 middle part height unanimous that arches, increase the number that elasticity pole 3 middle part and steel cable 31 formed the same size mesh, increase the screening efficiency of treating restoreing soil.
As an embodiment of the present invention, a cavity 33 is formed in the elastic rod 3, a set of steel balls 34 is installed in the cavity 33, and the steel balls 34 freely roll in the cavity 33; when the soil to be repaired is in the screening process, the elastic rod 3 continuously rotates with the first ring 2 and the second ring 21, so that the steel balls 34 in the cavity 33 continuously roll, the steel balls 34 collide with each other to generate vibration, the elastic rod 3 continuously vibrates, and the screening efficiency of the soil to be repaired is further improved.
As an embodiment of the present invention, the inner wall of the cavity 33 is provided with a wave-shaped protrusion 35, and the protrusion 35 is used for increasing the vibration frequency of the steel ball 34; the wavy protrusions 35 can increase the collision frequency of the steel balls 34 in the rolling process in the cavity 33, so that the vibration frequency of the elastic rod 3 is increased, and the screening efficiency of the soil to be repaired is further increased.
As an embodiment of the invention, a second bracket 17 is fixedly connected to the cylinder 11 at a position corresponding to the external toothed disc 22, and the second bracket 17 is rotatably connected with the rotating shaft 5; one end of the rotating shaft 5 close to the cylinder 11 is fixedly connected with a third gear 51, and the third gear 51 is meshed with the external fluted disc 22; a third bracket 18 is fixedly connected to one side of the second bracket 17 far away from the cylinder 11, and a fan 52 is rotatably connected to the third bracket 18; one end of the rotating shaft 5, which is far away from the third gear 51, drives a fan 52 through a belt; one end of the second support 17 close to the fan 52 is fixedly connected with a steel wire mesh 53; drive No. three gear 51 and rotate when rotating through fluted disc 22, and then it is rotatory to drive fan 52 through pivot 5 and belt drive, it forms the negative pressure to be close to the opening part of lower part at drum 11, and then bleed in drum 11, make the plastics film piece that the quality that awaits repairing in the drum 11 is lighter be sucked out, adsorb on wire net 53 behind fan 52 suction drum 11 on the plastics film piece, motor 15 stall after the soil screening that awaits repairing finishes, the staff retrieves the aftertreatment with the plastics film piece of adhesion on wire net 53, the impurity content of the soil that awaits repairing has further been reduced.
When the elastic rod type cylinder 11 is used, the handle 27 rotates anticlockwise and then is clamped into the clamping groove 29, the handle 27 drives the second gear 26 to rotate, the rack 25 is further driven to slide, the rack 25 drives the flange plate 24 to push the first circular ring 2 after sliding, the distance between the first circular ring 2 and the second circular ring 21 is further reduced, the elastic rod 3 arches towards one side close to the inner wall of the cylinder 11 under the extrusion of the first circular ring 2 and the second circular ring 21, and the arched elastic rod 3 is matched with the steel rope 31 to form meshes; then, a controller is used for starting a motor 15, an output shaft of the motor 15 drives a first gear 16 to further drive an external fluted disc 22 to rotate, and finally the external fluted disc 22 drives a second ring 21 and an elastic rod 3 to rotate, so that a screen mesh consisting of the first ring 2, the elastic rod 3, a steel rope 31 and the second ring 21 rotates in a cylinder 11, at the moment, soil to be repaired containing stones is conveyed into the cylinder 11 through a feed hopper 13, the soil in the soil to be repaired falls into the cylinder 11 from meshes between the elastic rod 3 and the steel rope 31, and the stones in the soil to be repaired are left inside the screen mesh consisting of the elastic rod 3 and the steel rope 31; after the soil to be repaired is completely screened, the separated soil is collected through a discharge port 12 and then is subjected to next-stage treatment, stones are left in a screen mesh consisting of the elastic rod 3 and the steel rope 31, at the moment, the handle 27 is taken out of the clamping groove 29 and is clamped into the clamping groove 29 on the other side of the limiting disc 28 after clockwise rotation, the first ring 2 is pulled by the handle 27 through transmission of the second gear 26, the rack 25 and the flange disc 24, so that the elastic rod 3 is straightened after being restored, and because the included angle between the axis of the cylinder 11 and the horizontal plane is 10-20 degrees, the stones are discharged from an opening, close to the lower part, of the cylinder 11 under the matching of self gravity and the rotation of the elastic rod 3, and then the stones are transported away for treatment; the handle 27 is clamped into different U-shaped grooves 30, so that different distances between the first circular ring 2 and the second circular ring 21 can be controlled, the arching height of the elastic rod 3 is further controlled, and different mesh sizes can be obtained by matching with the steel rope 31, so that the repairing and screening work of the soil with different particle diameters can be adapted; when the soil to be restored is screened, the elastic rod 3, the first circular ring 2 and the second circular ring 21 continuously rotate, so that the steel balls 34 in the cavity 33 continuously roll, the steel balls 34 collide with each other to generate vibration, the elastic rod 3 is further continuously vibrated, and the screening efficiency of the soil to be restored is further improved; the wavy protrusions 35 can increase the collision frequency of the steel balls 34 in the rolling process in the cavity 33, so that the vibration frequency of the elastic rod 3 is increased, and the screening efficiency of the soil to be repaired is further increased; drive No. three gear 51 and rotate when rotating through fluted disc 22, and then it is rotatory to drive fan 52 through pivot 5 and belt drive, it forms the negative pressure to be close to the opening part of lower part at drum 11, and then bleed in drum 11, make the plastics film piece that the quality that awaits repairing in the drum 11 is lighter be sucked out, adsorb on wire net 53 behind fan 52 suction drum 11 on the plastics film piece, motor 15 stall after the soil screening that awaits repairing finishes, the staff retrieves the aftertreatment with the plastics film piece of adhesion on wire net 53, the impurity content of the soil that awaits repairing has further been reduced.
The front, the back, the left, the right, the upper and the lower are all based on the figure 2 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. An ecological soil remediation method is characterized in that: the repairing method comprises the following steps:
s1, stirring the polluted soil and the quicklime together to change the polluted soil from block to particle, and screening impurities in the mixture of the polluted soil and the quicklime by a rotary screen;
s2, preheating the polluted soil treated in the step S1 by using smoke generated by fuel combustion of a thermal desorption device, and then putting the preheated polluted soil into the thermal desorption device for secondary heating;
s3, sequentially spraying cooling water, demisting and adsorbing active carbon on the mixed steam generated after secondary heating in S2, and then discharging the mixed steam into the atmosphere at high altitude; directly discharging the soil heated by S2;
s4, spraying water mist to the soil discharged in the S3, and humidifying and dedusting; and transporting the treated soil to a designated area;
the adopted drum screening machine comprises a frame (1); a cylinder (11) is fixedly connected to the rack (1), and an included angle between the axis of the cylinder (11) and the horizontal plane is 10-20 degrees; a discharge hole (12) is formed in the bottom of the cylinder (11), and a feed hopper (13) is fixedly connected to the rack (1) at the opening at the upper end of the cylinder (11); a first circular ring (2) is connected in an opening at the upper end of the cylinder (11) in a sliding manner, and a second circular ring (21) is connected in an opening at the other end of the cylinder (11) in a rotating manner; a group of elastic rods (3) are hinged between the first circular ring (2) and the second circular ring (21), and a group of steel ropes (31) are fixedly connected between the adjacent elastic rods (3); one side of the second ring (21) far away from the elastic rod (3) is fixedly connected with an external fluted disc (22); a first bracket (14) is arranged at the position of the cylinder (11) close to the external fluted disc (22), and a motor (15) is fixedly connected to the first bracket (14); a first gear (16) fixedly connected with an output shaft of the motor (15) is meshed with the outer fluted disc (22), and the motor (15) is connected with a power supply through a controller; a gland (23) is fixedly connected to one side of the first circular ring (2) far away from the elastic rod (3), and a flange plate (24) is rotatably connected between the first circular ring (2) and the gland (23); a rack (25) is connected to the cylinder (11) on one side, away from the first circular ring (2), of the flange plate (24) in a sliding manner, and one end of the rack (25) is fixedly connected with the flange plate (24); a second gear (26) is rotatably connected to the position, corresponding to the rack (25), of the cylinder (11), and the second gear (26) is meshed with the rack (25); a handle (27) is fixedly connected to the second gear (26), and a fan-shaped limiting disc (28) is arranged on the cylinder (11) at a position corresponding to the handle (27); a pair of clamping grooves (29) with U-shaped openings are formed in two ends of the outer edge of the limiting disc (28), and the clamping grooves (29) are used for clamping the handle (27);
a group of U-shaped grooves (30) are uniformly formed in the outer edge of the limiting disc (28) between the two clamping grooves (29), the handle (27) is clamped into different U-shaped grooves (30) to control the distance between the first circular ring (2) and the second circular ring (21), and then the mesh size between the elastic rod (3) and the steel rope (31) is adjusted;
a group of lantern rings (32) are sleeved on the periphery of the screen mesh formed by the elastic rods (3) and the steel ropes (31), and the lantern rings (32) are used for preventing the elastic rods (3) from excessively deforming;
a cavity (33) is formed in the elastic rod (3), a group of steel balls (34) are arranged in the cavity (33), and the steel balls (34) freely roll in the cavity (33);
the inner wall of the cavity (33) is provided with a wavy protrusion (35), and the protrusion (35) is used for increasing the vibration frequency of the steel ball (34);
a second bracket (17) is fixedly connected to the position, corresponding to the external fluted disc (22), of the cylinder (11), and the second bracket (17) is rotatably connected with a rotating shaft (5); one end of the rotating shaft (5) close to the cylinder (11) is fixedly connected with a third gear (51), and the third gear (51) is meshed with the external fluted disc (22); a third bracket (18) is fixedly connected to one side of the second bracket (17) far away from the cylinder (11), and a fan (52) is rotatably connected to the third bracket (18); one end of the rotating shaft (5) far away from the third gear (51) drives a fan (52) through a belt; and one end of the second support (17) close to the fan (52) is fixedly connected with a steel wire mesh (53).
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| CN110420982A (en) | 2019-11-08 |
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Effective date of registration: 20210908 Address after: 045000 floor 10, Nagu, China, No. 2 Taihang Road, mining area, Yangquan City, Shanxi Province Applicant after: Shanxi Yangmei Jiuzhou energy conservation and Environmental Protection Technology Co.,Ltd. Address before: 210000 room 107, No. 82, building 1, yangguangli community, Yongle North Road, Qinhuai District, Nanjing, Jiangsu Province Applicant before: Yao Shuang |
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