CN114951251B - Intelligent contaminated soil restoration device and restoration method for pesticide-based industrial sites - Google Patents
Intelligent contaminated soil restoration device and restoration method for pesticide-based industrial sites Download PDFInfo
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- CN114951251B CN114951251B CN202210679524.2A CN202210679524A CN114951251B CN 114951251 B CN114951251 B CN 114951251B CN 202210679524 A CN202210679524 A CN 202210679524A CN 114951251 B CN114951251 B CN 114951251B
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention discloses an intelligent contaminated soil restoration device and restoration method for a pesticide-based industrial field, wherein the device comprises a device box, a chemical oxidation assembly, a thermal desorption assembly, an extraction assembly and a PLC (programmable logic controller); the chemical oxidation assembly comprises a medicament box arranged on the device box and a liquid adding spray head arranged in the device box and connected with the medicament box; the thermal desorption assembly comprises a movable plate, an infrared heating rod and a movable motor, wherein the movable plate is clamped in the device box, the infrared heating rod and the movable motor are arranged on the movable plate, and the movable motor is used for providing power for the movable screw; the extraction component comprises an adsorption box arranged on the side wall of the device box and an extraction pipe sleeved inside the infrared heating rod and connected with the adsorption box, and extraction holes are formed in the infrared heating rod; the PLC is respectively and electrically connected with each electric equipment; the device has reasonable structural design, low energy consumption and obvious polluted site restoration effect, and is suitable for popularization and use.
Description
Technical Field
The invention relates to the technical field of chemical pollution site restoration, in particular to an intelligent device and a method for restoring polluted soil in a pesticide-based industrial site.
Background
The country is the country where the pesticide raw material is produced, and the waste residue/water and the like generated in the pesticide production process can cause site pollution due to poor management. The pesticide pollution site has the characteristics of long production history, high pollution degree, complex pollution components, outstanding odor problems and the like, and compared with the common industrial pollution site, the pesticide pollution site has larger harm and higher risk, seriously threatens the health of human bodies and the safety of ecological environment, and becomes a serious soil environment problem to be solved urgently.
The pesticide chemical industry field is mainly organic pollution, the ectopic chemical oxidation and thermal desorption technology is a common technology for treating the organic pollution soil under the condition of low permeability soil layer, but the conventional chemical oxidation technology has poor stirring uniformity, long maintenance period and low oxidation efficiency; the thermal desorption technology has high energy consumption, the generated tail gas is very easy to cause secondary pollution, and the economy is poor.
Disclosure of Invention
Aiming at the technical problems, the invention provides an intelligent pesticide chemical pollution site repairing device and a repairing method by combining chemical oxidation with thermal desorption technology.
The technical scheme of the invention is as follows: an intelligent contaminated soil restoration device for a pesticide-based industrial field comprises a device box, a chemical oxidation assembly, a thermal desorption assembly, an extraction assembly and a PLC (programmable logic controller); the lower end of the device box is provided with a base, the inside of the device box is sleeved with a treatment box fixedly connected with the base, and the upper ends of two side walls of the treatment box are provided with feeding holes; the two sides of the upper end surface of the device box are provided with a trough communicated with the feeding hole; the upper end of the device box is provided with a pollutant concentration detector, and detection probes of the pollutant concentration detector are respectively positioned in the two trough;
the chemical oxidation assembly comprises a medicament box and liquid adding spray heads, the medicament box is connected to the upper end of the device box in a sliding and clamping mode, an electric heating plate is arranged inside the medicament box, the liquid adding spray heads are arranged in a plurality of mode, each liquid adding spray head is uniformly distributed inside two feeding holes, each liquid adding spray head is connected with the medicament box through a guide pipe, and electric control valves are arranged at the connecting positions;
the thermal desorption assembly comprises two moving plates, an infrared heating rod and moving motors, wherein the two moving plates and the two moving motors are respectively arranged, the two moving plates are respectively and slidably clamped inside the device box and are positioned on two sides of the treatment box, the upper ends and the lower ends of the two moving plates are respectively and threadably connected with moving screw rods rotationally clamped with the inner wall of the device box, the end parts of the moving screw rods penetrate through the side wall of the device box and are respectively provided with a connecting belt wheel, the connecting belt wheels on the two moving screw rods positioned on the same side of the device box are connected through a belt, the two moving motors are respectively arranged on two sides of the upper end face of the base, and the two moving motors respectively provide power for one moving screw rod on two sides of the device box; the infrared heating rods are uniformly distributed on one side of the two moving plates close to the treatment box, and through holes corresponding to the positions of the infrared heating rods are formed in the side wall of the treatment box in a penetrating manner;
the extraction component comprises two adsorption boxes and extraction pipes, wherein the two adsorption boxes are respectively arranged on the front side wall and the rear side wall of the device box; the number of the extraction pipes is correspondingly consistent with that of the infrared heating rods, each extraction pipe is movably sleeved inside each infrared heating rod, and a plurality of extraction holes communicated with the extraction pipes are formed in the upper side wall and the lower side wall of each infrared heating rod; each extraction pipe positioned at two sides of the treatment box is connected with two adsorption boxes through a guide pipe respectively, and suction pumps are arranged at the connection positions;
the PLC is respectively and electrically connected with an electric control valve, an electric heating plate, an infrared heating rod, a mobile motor and a suction pump of the pollutant concentration detector; the PLC is stored with a common repair technical parameter database of a pesticide pollution site, and the chemical oxidation and thermal desorption repair technologies have respective starting conditions and corresponding technological parameter settings under different scenes, for example, when persulfate is used as a chemical oxidation agent, the PLC can automatically adjust the heating temperature of an electric heating plate to 55-65 ℃; when the high-strength acid salt is used as the chemical oxidizing agent, the PLC can automatically adjust the heating temperature of the electric heating plate to 15-25 ℃.
Further, the upper end of the treatment box is opened, a transfer net box is movably clamped in the treatment box, a cover plate which can be in sealing connection with the upper end opening of the treatment box is movably clamped at the upper end of the transfer net box, and a slot for conducting a feed hole is formed in the side wall of the transfer net box; by arranging the transfer net cage, the repaired polluted soil can be conveniently transferred and backfilled, and the soil repairing efficiency of the invention can be effectively improved.
Further, a connecting box is arranged at the bottom in the transferring net box, a plurality of hollow sleeves are vertically arranged on the upper end face of the connecting box, shaft rods are rotatably clamped in the hollow sleeves, the bottom ends of the shaft rods penetrate through the connecting box and are provided with connecting gears, the connecting gears are driven by chains, a plurality of driving worm gears are sleeved on the shaft rods, a plurality of stirring rods are rotatably clamped on the two sides of the hollow sleeves, the stirring rods are respectively connected with the driving worm gears in a meshed mode, and one ends, far away from the hollow sleeves, of the stirring rods are respectively rotatably clamped with the inner wall of the transferring net box; the stirring motor is arranged in the base, and an output shaft of the stirring motor can be movably clamped with one of the shaft rods; the stirring motor is electrically connected with the PLC; through setting up the puddler, can chemical oxidation medicament and pollute soil intensive mixing on the one hand, improve the chemical oxidation effect of polluting the soil, on the other hand can make the contaminated soil be heated more evenly to improve the thermal desorption effect of contaminated soil.
Further, gear boxes are arranged on two sides of the device box, and the two mobile motors are respectively positioned in the two gear boxes; the safety of the invention can be improved by providing a gearbox.
Further, crushing rollers which are connected through gear meshing are arranged in pairs in the two material tanks, crushing motors which provide power for the crushing rollers are arranged on the side walls of the device tanks, and the crushing motors are electrically connected with the PLC; the crushing roller is utilized to crush the polluted soil, so that the repairing difficulty of the polluted soil is reduced.
Further, one end of the extraction pipe penetrates through the infrared heating rod, the other end of the extraction pipe penetrates through the movable plate, and a reset spring with one end being abutted with the inner wall of the movable plate and the other end being clamped with the outer wall of the extraction pipe is sleeved on the extraction pipe positioned in the movable plate; the outer wall of the extraction pipe is provided with opening and closing sliding plates at the positions corresponding to the extraction holes; when two movable plates at two sides of the inside of the device box are close to each other, the infrared heating rods on the two movable plates are in contact with each other, so that the two extraction pipes are abutted, the opening and closing sliding plate on the extraction pipe is separated from the extraction hole, the conduction between the extraction hole and the extraction pipe is realized, and the heat loss in the polluted soil heating process is reduced.
Further, each extraction hole is provided with a separation filter screen; through setting up separation filter screen, can avoid soil particle to get into extraction hole and cause the jam of extraction hole, stability when having improved the device operation.
Further, the upper end and the lower end of the moving plate are rotatably clamped with guide rollers which can be clamped with the inner wall of the device box; through setting up the guide roller, can improve the stationarity when the movable plate removes to can realize the accurate butt joint of infrared heating rod and the through-hole on the processing box.
Further, a lifting lug is arranged on the cover plate; lifting lugs are utilized to facilitate hoisting and transferring the transferring net cage.
The invention also provides an intelligent pesticide chemical industry polluted site soil restoration method, which is based on the intelligent pesticide chemical industry polluted site restoration device and comprises the following steps:
s1, respectively connecting a pollutant concentration detector, an electric control valve, an electric heating plate, an infrared heating rod, a mobile motor and a suction pump with an external power supply; then chemical oxidation agent is injected into the agent box, and the electric heating plate is controlled to be opened by the PLC; finally filling adsorbents into the two adsorption tanks;
s2, injecting the polluted soil into the device box through the two material tanks, controlling the pollutant concentration monitoring detector to be started through the PLC, detecting the pollutant concentration in the polluted soil by using the pollutant concentration monitoring detector, controlling the electric control valve to be started through the PLC when the pollutant concentration in the polluted soil is lower, injecting the chemical oxidation agent into the polluted soil through the liquid adding spray nozzle in the process that the polluted soil enters the treatment box through the feed hole, and carrying out chemical oxidation treatment on the pollutants in the polluted soil; discharging the polluted soil out of the device box after the chemical oxidation treatment is finished;
s3, when the concentration of pollutants in the polluted soil is high, the infrared heating rods and the mobile motor are controlled to be started by the PLC, the mobile motor drives the mobile screw to rotate, and the mobile plate drives each infrared heating rod to pass through the through hole on the treatment box under the action of the mobile screw and then to be inserted into the polluted soil, so that the pollutants in the polluted soil are heated and desorbed;
s4, controlling the suction pump to be started through the PLC, enabling the polluted gas desorbed from the polluted soil to sequentially pass through the extraction holes and the extraction pipes and then enter the two adsorption tanks under the action of the suction pump, and carrying out adsorption treatment on harmful substances in the polluted gas by using the activated carbon adsorbent filled in the adsorption tanks.
Compared with the prior art, the invention has the beneficial effects that:
the first, the invention has reasonable structural design, the integrated design reduces the occupation area of the device; meanwhile, the method has higher stability and reliability, and the restoration efficiency of the pesticide chemical pollution site is obviously improved;
secondly, the device can detect the concentration of pollutants, intelligently adjust the repair technology and process parameters according to the concentration, accurately identify and accurately repair, reduce the cost and improve the repair effect;
thirdly, the device for repairing the pesticide chemical industry polluted site has the advantages of short repairing period, low energy consumption and remarkable repairing effect, and the safety utilization rate of the pesticide chemical industry polluted site is effectively improved.
Drawings
FIG. 1 is a longitudinal cross-sectional view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a schematic view of the internal structure of the apparatus box of the present invention;
FIG. 4 is a schematic illustration of the connection of a crushing roller to a treatment tank according to the invention;
FIG. 5 is a schematic view of the structure of the moving plate of the present invention;
FIG. 6 is a schematic illustration of the connection of the extractor tube to an infrared heating rod of the present invention;
FIG. 7 is an enlarged partial schematic view of the present invention at A in FIG. 6;
FIG. 8 is a schematic illustration of the connection of the hollow sleeve of the present invention to a connection box;
the device comprises a 1-device box, a 10-base, a 11-treatment box, a 110-feeding hole, a 12-trough, a 13-gear box, a 14-crushing roller, a 140-crushing motor, a 2-chemical oxidation assembly, a 20-medicament box, a 21-liquid adding spray nozzle, a 22-electric heating plate, a 3-thermal desorption assembly, a 30-moving plate, a 300-guide roller, a 31-infrared heating rod, a 32-moving motor, a 33-moving screw, a 330-connecting belt wheel, a 4-extraction assembly, a 40-adsorption box, a 41-extraction pipe, a 410-extraction hole, a 411-reset spring, a 412-opening and closing slide plate, a 413-blocking filter screen, a 42-suction pump, a 5-transfer net box, a 50-cover plate, a 51-connecting box, a 52-hollow sleeve, a 53-shaft lever, a 530-driving worm wheel, a 54-stirring rod, a 540-worm and a 55-stirring motor.
Detailed Description
Example 1
Example 1
An intelligent contaminated soil restoration device for a pesticide-chemical industrial field shown in fig. 1 comprises a device box 1, a chemical oxidation assembly 2, a thermal desorption assembly 3, an extraction assembly 4 and a PLC controller; the lower end of the device box 1 is provided with a base 10, a treatment box 11 fixedly connected with the base 10 is sleeved in the device box, and the upper ends of two side walls of the treatment box 11 are provided with feeding holes 110; the two sides of the upper end surface of the device box 1 are provided with a trough 12 communicated with the feeding hole 110; the upper end of the device box 1 is provided with a pollutant concentration detector, and detection probes of the pollutant concentration detector are respectively arranged in the two material tanks 12;
as shown in fig. 1 and 4, the chemical oxidation assembly 2 comprises a medicament box 20 and liquid adding spray heads 21, the medicament box 20 is slidably clamped at the upper end of the device box 1, an electric heating plate 22 is arranged in the medicament box 20, the liquid adding spray heads 21 are provided with a plurality of liquid adding spray heads 21, each liquid adding spray head 21 is uniformly distributed in two feeding holes 110, each liquid adding spray head 21 is connected with the medicament box 20 through a conduit respectively, and electric control valves are arranged at the connecting positions;
as shown in fig. 1, 3, 5, 6 and 7, the thermal desorption assembly 3 comprises two moving plates 30, an infrared heating rod 31 and a moving motor 32, wherein the two moving plates 30 and the two moving motors 32 are respectively arranged, the two moving plates 30 are respectively and slidably clamped inside the device box 1 and positioned at two sides of the treatment box 11, the upper ends and the lower ends of the two moving plates 30 are respectively and threadably connected with moving screw rods 33 rotationally clamped with the inner wall of the device box 1, the end parts of the moving screw rods 33 respectively penetrate through the side wall of the device box 1 and are respectively provided with a connecting belt wheel 330, the connecting belt wheels 330 on the two moving screw rods 33 positioned at the same side of the device box 1 are connected through belts, the two moving motors 32 are respectively arranged at two sides of the upper end face of the base 10, and the two moving motors 32 respectively provide power for one of the moving screw rods 33 at two sides of the device box 1; the number of the infrared heating rods 31 is 40, the 40 infrared heating rods 31 are uniformly distributed on one side of the two moving plates 30 close to the treatment box 11, and through holes corresponding to the positions of the infrared heating rods 31 are formed in the side wall of the treatment box 11 in a penetrating manner;
as shown in fig. 1 and 2, the extraction assembly 4 comprises two adsorption tanks 40 and extraction pipes 41, wherein the two adsorption tanks 40 are respectively arranged on the front side wall and the rear side wall of the device tank 1; the number of the extraction pipes 41 is correspondingly consistent with that of the infrared heating rods 31, each extraction pipe 41 is movably sleeved inside each infrared heating rod 31, and the infrared heating rods 31 are provided with extraction holes 410 communicated with the extraction pipes 41; the extraction pipes 41 positioned at the two sides of the treatment tank 11 are respectively connected with the two adsorption tanks 40 through guide pipes, and suction pumps 42 are arranged at the connection positions;
the PLC controller is respectively and electrically connected with the electric control valve, the electric heating plate 22, the infrared heating rod 31, the mobile motor 32 and the suction pump 42; the PLC controller, the pollutant concentration detector, the electric control valve, the electric heating plate 22, the infrared heating rod 31, the mobile motor 32 and the suction pump 42 are all commercial products; the PLC is stored with a common repair technical parameter database of a pesticide pollution site, the chemical oxidation and thermal desorption repair technologies have respective starting conditions and corresponding technological parameter settings under different scenes, and if persulfate is used as a chemical oxidation agent, the PLC can automatically adjust the heating temperature of the electric heating plate 22 to 55 ℃; if a high-violence acid salt is used as the chemical oxidizing agent, the PLC controller can automatically adjust the heating temperature of the electric heating plate 22 to 15 ℃.
Example 2
The intelligent pesticide chemical industry contaminated site restoration method recorded in the embodiment is based on the intelligent pesticide chemical industry contaminated site restoration device of the embodiment 1, and comprises the following steps:
s1, respectively connecting a pollutant concentration detector, an electric control valve, an electric heating plate 22, an infrared heating rod 31, a mobile motor 32 and a suction pump 42 with an external power supply; then sodium persulfate solution with 8% volume concentration is injected into the medicament box 20, and the electric heating plate 22 is controlled to be opened by the PLC; finally, the inside of the two adsorption tanks 40 is filled with a commercially available activated carbon adsorbent; automatically starting an electric heating plate by the PLC to heat to 55 ℃;
s2, injecting the polluted soil into the device box 1 through the two material tanks 12, controlling the opening of a pollutant concentration monitoring detector through a PLC controller, detecting the pollutant concentration in the polluted soil by using the pollutant concentration monitoring detector, and controlling an electric control valve to open through the PLC controller when the pollutant concentration is less than 5 times of a soil pollutant concentration screening value according to the soil pollution risk management and control standard for construction land soil environmental quality of GB36600-2018, wherein the chemical oxidation agent is injected into the polluted soil through a liquid adding spray nozzle 21 in the process of entering the polluted soil into the treatment box 11 through the feed hole 110, so as to perform chemical oxidation treatment on the pollutants in the polluted soil; discharging the polluted soil out of the device box 1 after the chemical oxidation treatment is finished;
s3, when the concentration of pollutants in the polluted soil is higher than a soil pollutant concentration screening value which is 5 times, the infrared heating rods 31 and the mobile motor 32 are controlled to be started by the PLC controller, the mobile motor 32 drives the mobile screw 33 to rotate, the mobile plate 30 drives each infrared heating rod 31 to pass through a through hole on the treatment box 11 under the action of the mobile screw 33 and then to be inserted into the polluted soil, the pollutants in the polluted soil are subjected to heating desorption treatment, and the heating temperature of the infrared heating rods 31 is controlled to be 100 ℃;
s4, controlling the suction pump 42 to be started through the PLC, enabling the polluted gas desorbed from the polluted soil to sequentially pass through the extraction holes 410 and the extraction pipes 41 and then enter the two adsorption tanks 40 under the action of the suction pump 42, and carrying out adsorption treatment on harmful substances in the polluted gas by using the activated carbon adsorbent filled in the adsorption tanks 40.
Example 3
An intelligent contaminated soil restoration device for a pesticide-chemical plant site as shown in figures 1, 3 and 8 comprises a device box 1, a chemical oxidation assembly 2, a thermal desorption assembly 3, an extraction assembly 4 and a PLC controller; the lower end of the device box 1 is provided with a base 10, a treatment box 11 fixedly connected with the base 10 is sleeved in the device box, and the upper ends of two side walls of the treatment box 11 are provided with feeding holes 110; the two sides of the upper end surface of the device box 1 are provided with a trough 12 communicated with the feeding hole 110; the upper end of the device box 1 is provided with a pollutant concentration detector, and detection probes of the pollutant concentration detector are respectively arranged in the two material tanks 12; the upper end of the treatment box 11 is opened, a transfer net cage 5 is movably clamped in the treatment box 11, a cover plate 50 which can be in sealing connection with the opening of the upper end of the treatment box 11 is movably clamped at the upper end of the transfer net cage 5, and a slot for conducting a feed hole 110 is formed in the side wall of the transfer net cage 5; the inner bottom of the transfer net cage 5 is provided with a connecting box 51, the upper end surface of the connecting box 51 is vertically provided with 3 hollow sleeves 52, the inside of each hollow sleeve 52 is rotationally clamped with a shaft rod 53, the bottom end of each shaft rod 53 penetrates through the connecting box 51 and is provided with a connecting gear, each connecting gear is driven by a chain, 4 driving worm gears 530 are sleeved on each shaft rod 53, 4 stirring rods 54 are rotationally clamped on two sides of each hollow sleeve 52, each stirring rod 54 is respectively meshed and connected with the driving worm gears 530 through a worm 540, and one end of each stirring rod 54 far away from the hollow sleeve 52 is respectively rotationally clamped with the inner wall of the transfer net cage 5; the inside of the base 10 is provided with a stirring motor 55, and an output shaft of the stirring motor 55 can be movably clamped with one of the shaft rods 53;
as shown in fig. 1 and 4, the chemical oxidation assembly 2 comprises a medicament box 20 and liquid adding spray heads 21, the medicament box 20 is slidably clamped at the upper end of the device box 1, an electric heating plate 22 is arranged in the medicament box 20, the liquid adding spray heads 21 are provided with a plurality of liquid adding spray heads 21, each liquid adding spray head 21 is uniformly distributed in two feeding holes 110, each liquid adding spray head 21 is connected with the medicament box 20 through a conduit respectively, and electric control valves are arranged at the connecting positions;
as shown in fig. 1, 3, 5, 6 and 7, the thermal desorption assembly 3 comprises two moving plates 30, an infrared heating rod 31 and a moving motor 32, wherein the two moving plates 30 and the two moving motors 32 are respectively arranged, the two moving plates 30 are respectively and slidably clamped inside the device box 1 and positioned at two sides of the treatment box 11, the upper ends and the lower ends of the two moving plates 30 are respectively and threadably connected with moving screw rods 33 rotationally clamped with the inner wall of the device box 1, the end parts of the moving screw rods 33 respectively penetrate through the side wall of the device box 1 and are respectively provided with a connecting belt wheel 330, the connecting belt wheels 330 on the two moving screw rods 33 positioned at the same side of the device box 1 are connected through belts, the two moving motors 32 are respectively arranged at two sides of the upper end face of the base 10, and the two moving motors 32 respectively provide power for one of the moving screw rods 33 at two sides of the device box 1; the number of the infrared heating rods 31 is 40, the 40 infrared heating rods 31 are uniformly distributed on one side of the two moving plates 30 close to the treatment box 11, and through holes corresponding to the positions of the infrared heating rods 31 are formed in the side wall of the treatment box 11 in a penetrating manner;
as shown in fig. 1 and 2, the extraction assembly 4 comprises two adsorption tanks 40 and extraction pipes 41, wherein the two adsorption tanks 40 are respectively arranged on the front side wall and the rear side wall of the device tank 1; the number of the extraction pipes 41 is correspondingly consistent with that of the infrared heating rods 31, each extraction pipe 41 is movably sleeved inside each infrared heating rod 31, and 3 extraction holes 410 communicated with the extraction pipe 41 are formed in the upper side wall and the lower side wall of each infrared heating rod 31; the extraction pipes 41 positioned at the two sides of the treatment tank 11 are respectively connected with the two adsorption tanks 40 through guide pipes, and suction pumps 42 are arranged at the connection positions; one end of the extraction tube 41 penetrates through the infrared heating rod 31, the other end penetrates through the movable plate 30, and a reset spring 411 with one end abutting against the inner wall of the movable plate 30 and the other end clamped with the outer wall of the extraction tube 41 is sleeved on the extraction tube 41 positioned in the movable plate 30; the outer wall of the extraction pipe 41 is provided with an opening and closing sliding plate 412 at the position corresponding to each extraction hole 410; a blocking filter screen 413 is arranged on each extraction hole 410;
the PLC is respectively and electrically connected with the pollutant concentration detector, the electric control valve, the electric heating plate 22, the infrared heating rod 31, the mobile motor 32, the suction pump 42 and the stirring motor 55; the PLC controller, the pollutant concentration detector, the electric control valve, the electric heating plate 22, the infrared heating rod 31, the mobile motor 32, the suction pump 42 and the stirring motor 55 are all commercial products; the PLC is stored with a common repair technical parameter database of a pesticide pollution site, the chemical oxidation and thermal desorption repair technologies have respective starting conditions and corresponding technological parameter settings under different scenes, and if persulfate is used as a chemical oxidation agent, the PLC can automatically adjust the heating temperature of the electric heating plate 22 to 60 ℃; if a high-violence acid salt is used as the chemical oxidizing agent, the PLC controller can automatically adjust the heating temperature of the electric heating plate 22 to 20 ℃.
Example 4
The intelligent pesticide chemical industry contaminated site restoration method recorded in the embodiment is based on the intelligent pesticide chemical industry contaminated site restoration device of the embodiment 3, and comprises the following steps:
s1, respectively connecting a pollutant concentration detector, an electric control valve, an electric heating plate 22, an infrared heating rod 31, a mobile motor 32 and a suction pump 42 with an external power supply; then, injecting a potassium permanganate solution with the volume concentration of 25% into the medicament box 20, controlling the electric heating plate 22 to be opened through the PLC, and finally filling the two adsorption boxes 40 with commercial activated carbon adsorbents; the PLC controller automatically starts the electric heating plate 22 to heat to 20 ℃;
s2, injecting contaminated soil into the device box 1 through the two material tanks 12, and enabling the contaminated soil to enter the transfer net box 5 through the feeding holes 110; the method comprises the steps that a PLC controller is used for controlling a pollutant concentration monitoring detector to be started, the pollutant concentration monitoring detector is used for detecting the pollutant concentration in polluted soil, according to the soil pollution risk management and control standard of construction land for the environmental quality of GB36600-2018, when the pollutant concentration is smaller than a 5-time soil pollutant concentration screening value, an electric control valve is controlled to be started by the PLC controller, in the process that the polluted soil enters a treatment box 11 through a feed hole 110, a chemical oxidizing agent is injected into the polluted soil through a liquid adding spray nozzle 21, chemical oxidation treatment is carried out on the pollutants in the polluted soil, meanwhile, a PLC controller is used for controlling a stirring motor 55 to be started, and each shaft rod 53 is driven to rotate by the stirring motor 55, so that each stirring rod 54 rotates to stir the soil; discharging the polluted soil out of the device box 1 after the chemical oxidation treatment is finished;
s3, when the concentration of pollutants in the polluted soil is higher than a soil pollutant concentration screening value which is 5 times, the infrared heating rods 31 and the mobile motor 32 are controlled to be started by the PLC controller, the mobile motor 32 drives the mobile screw 33 to rotate, and the mobile plate 30 drives each infrared heating rod 31 to pass through a through hole on the treatment box 11 under the action of the mobile screw 33 and then to be inserted into the polluted soil, so that the pollutants in the polluted soil are heated and desorbed; controlling the heating temperature of the infrared heating rod 31 to 550 ℃; meanwhile, after the two moving plates 30 are close to each other, the infrared heating rods 31 on the two moving plates 30 are in contact with each other, so that the two extraction pipes 41 are abutted, and the opening and closing slide plate 412 on the extraction pipe 41 is separated from the extraction hole 410, so that the conduction between the extraction hole 410 and the extraction pipe 41 is realized;
s4, controlling the suction pump 42 to be started through the PLC, enabling the polluted gas desorbed from the polluted soil to sequentially pass through the extraction holes 410 and the extraction pipes 41 and then enter the two adsorption tanks 40 under the action of the suction pump 42, and carrying out adsorption treatment on harmful substances in the polluted gas by using the activated carbon adsorbent filled in the adsorption tanks 40; and after the polluted soil is restored, transferring the transferring net cage 5 from the processing box 11 by using external hoisting equipment.
Example 5
An intelligent contaminated soil restoration device for a pesticide-chemical plant site as shown in figures 1, 3 and 8 comprises a device box 1, a chemical oxidation assembly 2, a thermal desorption assembly 3, an extraction assembly 4 and a PLC controller; the lower end of the device box 1 is provided with a base 10, a treatment box 11 fixedly connected with the base 10 is sleeved in the device box, and the upper ends of two side walls of the treatment box 11 are provided with feeding holes 110; the two sides of the upper end surface of the device box 1 are provided with a trough 12 communicated with the feeding hole 110; the upper end of the device box 1 is provided with a pollutant concentration detector, and detection probes of the pollutant concentration detector are respectively arranged in the two material tanks 12; crushing rollers 14 connected in a meshed manner through gears are arranged in pairs in the two material tanks 12, and crushing motors 140 for providing power for the crushing rollers 14 are arranged on the side walls of the device box 1; the upper end of the treatment box 11 is opened, a transfer net cage 5 is movably clamped in the treatment box 11, a cover plate 50 which can be in sealing connection with the opening of the upper end of the treatment box 11 is movably clamped at the upper end of the transfer net cage 5, lifting lugs are arranged on the cover plate 50, and a slot for conducting a feed hole 110 is arranged on the side wall of the transfer net cage 5; the inner bottom of the transfer net cage 5 is provided with a connecting box 51, the upper end surface of the connecting box 51 is vertically provided with 3 hollow sleeves 52, the inside of each hollow sleeve 52 is rotationally clamped with a shaft rod 53, the bottom end of each shaft rod 53 penetrates through the connecting box 51 and is provided with a connecting gear, each connecting gear is driven by a chain, 4 driving worm gears 530 are sleeved on each shaft rod 53, 4 stirring rods 54 are rotationally clamped on two sides of each hollow sleeve 52, each stirring rod 54 is respectively meshed and connected with the driving worm gears 530 through a worm 540, and one end of each stirring rod 54 far away from the hollow sleeve 52 is respectively rotationally clamped with the inner wall of the transfer net cage 5; the inside of the base 10 is provided with a stirring motor 55, and an output shaft of the stirring motor 55 can be movably clamped with one of the shaft rods 53;
as shown in fig. 1 and 4, the chemical oxidation assembly 2 comprises a medicament box 20 and liquid adding spray heads 21, the medicament box 20 is slidably clamped at the upper end of the device box 1, an electric heating plate 22 is arranged in the medicament box 20, the liquid adding spray heads 21 are provided with a plurality of liquid adding spray heads 21, each liquid adding spray head 21 is uniformly distributed in two feeding holes 110, each liquid adding spray head 21 is connected with the medicament box 20 through a conduit respectively, and electric control valves are arranged at the connecting positions;
as shown in fig. 1, 3, 5, 6 and 7, the thermal desorption assembly 3 comprises two moving plates 30, an infrared heating rod 31 and a moving motor 32, wherein the two moving plates 30 and the two moving motors 32 are respectively arranged, the two moving plates 30 are respectively and slidably clamped in the device box 1 and are positioned at two sides of the processing box 11, and guide rollers 300 which can be clamped with the inner wall of the device box 1 are respectively and rotatably clamped at the upper and lower ends of the moving plates 30; the upper end and the lower end of the two moving plates 30 are respectively connected with moving screw rods 33 which are rotationally clamped with the inner wall of the device box 1 in a threaded manner, the end parts of the moving screw rods 33 penetrate through the side wall of the device box 1, connecting belt wheels 330 are arranged on the connecting belt wheels 330 on the two moving screw rods 33 positioned on the same side of the device box 1, the two moving motors 32 are respectively arranged on two sides of the upper end face of the base 10, and the two moving motors 32 respectively provide power for one moving screw rod 33 on two sides of the device box 1; the number of the infrared heating rods 31 is 40, the 40 infrared heating rods 31 are uniformly distributed on one side of the two moving plates 30 close to the treatment box 11, and through holes corresponding to the positions of the infrared heating rods 31 are formed in the side wall of the treatment box 11 in a penetrating manner; the two sides of the device box 1 are provided with gear boxes 13, and two mobile motors 32 are respectively positioned in the two gear boxes 13;
as shown in fig. 1, 2 and 6, the extraction assembly 4 comprises two adsorption tanks 40 and extraction pipes 41, wherein the two adsorption tanks 40 are respectively arranged on the front side wall and the rear side wall of the device tank 1; the number of the extraction pipes 41 is correspondingly consistent with that of the infrared heating rods 31, each extraction pipe 41 is movably sleeved inside each infrared heating rod 31, and 3 extraction holes 410 communicated with the extraction pipe 41 are formed in the upper side wall and the lower side wall of each infrared heating rod 31; the extraction pipes 41 positioned at the two sides of the treatment tank 11 are respectively connected with the two adsorption tanks 40 through guide pipes, and suction pumps 42 are arranged at the connection positions; one end of the extraction tube 41 penetrates through the infrared heating rod 31, the other end penetrates through the movable plate 30, and a reset spring 411 with one end abutting against the inner wall of the movable plate 30 and the other end clamped with the outer wall of the extraction tube 41 is sleeved on the extraction tube 41 positioned in the movable plate 30; the outer wall of the extraction pipe 41 is provided with an opening and closing sliding plate 412 at the position corresponding to each extraction hole 410; a blocking filter screen 413 is arranged on each extraction hole 410;
the PLC is respectively and electrically connected with the pollutant concentration detector, the crushing motor 140, the electric control valve, the electric heating plate 22, the infrared heating rod 31, the moving motor 32, the suction pump 42 and the stirring motor 55; the PLC controller, the pollutant concentration detector, the crushing motor 140, the electric control valve, the electric heating plate 22, the infrared heating rod 31, the moving motor 32, the suction pump 42 and the stirring motor 55 are all commercial products; the PLC is stored with a common repair technical parameter database of a pesticide pollution site, the chemical oxidation and thermal desorption repair technologies have respective starting conditions and corresponding technological parameter settings under different scenes, and if persulfate is used as a chemical oxidation agent, the PLC can automatically adjust the heating temperature of the electric heating plate 22 to 65 ℃; if a high-violence acid salt is used as the chemical oxidizing agent, the PLC controller can automatically adjust the heating temperature of the electric heating plate 22 to 25 ℃.
Example 6
The intelligent pesticide chemical industry contaminated site restoration method recorded in the embodiment is based on the intelligent pesticide chemical industry contaminated site restoration device of the embodiment 5, and comprises the following steps:
s1, respectively connecting a pollutant concentration detector, an electric control valve, an electric heating plate 22, an infrared heating rod 31, a mobile motor 32 and a suction pump 42 with an external power supply; then, injecting a potassium persulfate solution with the volume concentration of 25% into the medicament box 20, and controlling the electric heating plate 22 to be opened through the PLC; finally, the inside of the two adsorption tanks 40 is filled with a commercially available activated carbon adsorbent; the PLC controller automatically starts the electric heating plate 22 to heat to 65 ℃;
s2, injecting contaminated soil into the device box 1 through the two material tanks 12, and enabling the contaminated soil to enter the transfer net box 5 through the feeding holes 110; the method comprises the steps that a PLC controller is used for controlling a pollutant concentration monitoring detector to be started, the pollutant concentration monitoring detector is used for detecting the pollutant concentration in polluted soil, according to the soil pollution risk management and control standard of construction land for the soil environmental quality of GB36600-2018, when the pollutant concentration is smaller than a 5-time soil pollutant concentration screening value, an electric control valve is controlled to be started by the PLC controller, in the process that the polluted soil enters a treatment box 11 through a feed hole 110, a chemical oxidation agent is injected into the polluted soil through a liquid injection nozzle 21, chemical oxidation treatment is carried out on the pollutants in the polluted soil, meanwhile, a crushing motor 140 and a stirring motor 55 are controlled to be started by the PLC controller, the polluted soil is firstly crushed by a crushing roller 14 in the process that the polluted soil enters a transfer net cage 5 through a feed hole 110, and finally, each shaft lever 53 is driven to rotate by the stirring motor 55, so that each stirring rod 54 rotates, and the soil is stirred; discharging the polluted soil out of the device box 1 after the chemical oxidation treatment is finished;
s3, when the concentration of pollutants in the polluted soil is higher than a soil pollutant concentration screening value which is 5 times, the infrared heating rods 31 and the mobile motor 32 are controlled to be started by the PLC controller, the mobile motor 32 drives the mobile screw 33 to rotate, and the mobile plate 30 drives each infrared heating rod 31 to pass through a through hole on the treatment box 11 under the action of the mobile screw 33 and then to be inserted into the polluted soil, so that the pollutants in the polluted soil are heated and desorbed; controlling the heating temperature of the infrared heating rod 31 to be 750 ℃; meanwhile, after the two moving plates 30 are close to each other, the infrared heating rods 31 on the two moving plates 30 are in contact with each other, so that the two extraction pipes 41 are abutted, and the opening and closing slide plate 412 on the extraction pipe 41 is separated from the extraction hole 410, so that the conduction between the extraction hole 410 and the extraction pipe 41 is realized;
s4, controlling the suction pump 42 to be started through the PLC, enabling the polluted gas desorbed from the polluted soil to sequentially pass through the extraction holes 410 and the extraction pipes 41 and then enter the two adsorption tanks 40 under the action of the suction pump 42, and carrying out adsorption treatment on harmful substances in the polluted gas by using the activated carbon adsorbent filled in the adsorption tanks 40; and after the polluted soil is restored, transferring the transferring net cage 5 from the processing box 11 by using external hoisting equipment.
Claims (6)
1. An intelligent contaminated soil restoration device for a pesticide chemical industry field is characterized by comprising a device box (1), a chemical oxidation assembly (2), a thermal desorption assembly (3), an extraction assembly (4) and a PLC controller; the lower end of the device box (1) is provided with a base (10), a treatment box (11) fixedly connected with the base (10) is sleeved in the device box, and the upper ends of two side walls of the treatment box (11) are provided with feeding holes (110); the two sides of the upper end surface of the device box (1) are provided with a trough (12) communicated with the feeding hole (110); the upper end of the device box (1) is provided with a pollutant concentration detector, and detection probes of the pollutant concentration detector are respectively arranged in the two trough (12);
the chemical oxidation assembly (2) comprises a medicament box (20) and liquid adding spray heads (21), the medicament box (20) is slidably clamped at the upper end of the device box (1), an electric heating plate (22) is arranged inside the medicament box (20), the liquid adding spray heads (21) are arranged in a plurality, each liquid adding spray head (21) is uniformly distributed inside two feeding holes (110), each liquid adding spray head (21) is connected with the medicament box (20) through a guide pipe, and electric control valves are arranged at the connecting positions;
the thermal desorption assembly (3) comprises two moving plates (30), an infrared heating rod (31) and a moving motor (32), wherein the two moving plates (30) and the two moving motors (32) are respectively arranged, the two moving plates (30) are respectively connected with the two sides of the treatment box (11) in a sliding manner, the upper ends and the lower ends of the two moving plates (30) are respectively connected with moving screw rods (33) rotationally connected with the inner wall of the treatment box (1) in a threaded manner, the end parts of the moving screw rods (33) respectively penetrate through the side wall of the treatment box (1), connecting belt wheels (330) are respectively arranged, the connecting belt wheels (330) on the two moving screw rods (33) on the same side of the treatment box (1) are connected through belts, the two moving motors (32) are respectively arranged on two sides of the upper end faces of the base (10), and the two moving motors (32) respectively provide power for one of the moving screw rods (33) on two sides of the treatment box (1); the infrared heating rods (31) are arranged in a plurality, each infrared heating rod (31) is uniformly distributed on one side, close to the treatment box (11), of the two movable plates (30), and through holes corresponding to the positions of each infrared heating rod (31) are formed in the side wall of the treatment box (11) in a penetrating manner;
the extraction assembly (4) comprises two adsorption tanks (40) and extraction pipes (41), wherein the two adsorption tanks (40) are respectively arranged on the front side wall and the rear side wall of the device tank (1), the number of the extraction pipes (41) is corresponding to that of the infrared heating rods (31), the extraction pipes (41) are respectively and movably sleeved in the infrared heating rods (31), and a plurality of extraction holes (410) communicated with the extraction pipes (41) are respectively arranged on the upper side wall and the lower side wall of the infrared heating rods (31); each extraction pipe (41) positioned at two sides of the treatment box (11) is respectively connected with two adsorption boxes (40) through a guide pipe, and suction pumps (42) are arranged at the connection positions;
the PLC is respectively and electrically connected with the pollutant concentration detector, the electric control valve, the electric heating plate (22), the infrared heating rod (31), the mobile motor (32) and the suction pump (42);
the upper end of the treatment box (11) is opened, a transfer net cage (5) is movably clamped in the treatment box (11), a cover plate (50) which can be in sealing connection with the opening of the upper end of the treatment box (11) is movably clamped at the upper end of the transfer net cage (5), and a slot for conducting the feeding hole (110) is formed in the side wall of the transfer net cage (5);
the inner bottom of the transfer net cage (5) is provided with a connecting box (51), the upper end face of the connecting box (51) is vertically provided with a plurality of hollow sleeves (52), each hollow sleeve (52) is internally provided with a shaft rod (53) in a rotating and clamping manner, the bottom ends of each shaft rod (53) penetrate through the connecting box (51) and are provided with connecting gears, a plurality of driving worm wheels (530) are sleeved on each shaft rod (53) through chain transmission, two sides of each hollow sleeve (52) are respectively provided with a plurality of stirring rods (54) in a rotating and clamping manner, each stirring rod (54) is respectively connected with the driving worm wheels (530) in a meshing manner through a worm (540), and one end, far away from each hollow sleeve (52), of each stirring rod (54) is respectively connected with the inner wall of the transfer net cage (5) in a rotating and clamping manner; a stirring motor (55) is arranged in the base (10), and an output shaft of the stirring motor (55) can be movably clamped with one shaft lever (53);
one end of the extraction pipe (41) penetrates through the infrared heating rod (31), the other end of the extraction pipe penetrates through the movable plate (30), and a reset spring (411) with one end being abutted with the inner wall of the movable plate (30) and the other end being clamped with the outer wall of the extraction pipe (41) is sleeved on the extraction pipe (41) positioned in the movable plate (30); the outer wall of the extraction pipe (41) is provided with an opening and closing sliding plate (412) at the position corresponding to each extraction hole (410).
2. An intelligent contaminated soil remediation device for a pesticide farm according to claim 1, wherein the gearbox (13) is arranged on both sides of the device box (1), and the two moving motors (32) are respectively arranged inside the two gearboxes (13).
3. An intelligent contaminated soil remediation device for a pesticide farm according to claim 1, wherein two tanks (12) are internally provided with crushing rollers (14) in pairs connected by gear engagement, and crushing motors (140) for powering the crushing rollers (14) are arranged on the side walls of the device box (1).
4. An intelligent contaminated soil remediation apparatus for pesticidal sites according to claim 1 wherein each extraction aperture (410) is provided with a barrier screen (413).
5. The intelligent contaminated soil remediation device for a pesticide-chemical industry site according to claim 1, wherein guide rollers (300) capable of being clamped with the inner wall of the device box (1) are rotatably clamped at the upper end and the lower end of the moving plate (30).
6. An intelligent pesticide chemical industry contaminated site restoration method based on the intelligent pesticide chemical industry contaminated site restoration device as set forth in any one of claims 1-5, characterized by comprising the following steps:
s1, respectively connecting a pollutant concentration detector, an electric control valve, an electric heating plate (22), an infrared heating rod (31), a mobile motor (32) and a suction pump (42) with an external power supply; then chemical oxidizing agent is injected into the agent box (20), and the electric heating plate (22) is controlled to be opened by the PLC; finally, filling adsorbents into the two adsorption tanks (40);
s2, injecting the polluted soil into the device box (1) through the two material tanks (12), controlling the pollutant concentration monitoring detector to be started through the PLC, detecting the pollutant concentration in the polluted soil by using the pollutant concentration monitoring detector, controlling the electric control valve to be started through the PLC when the pollutant concentration in the polluted soil is lower, and injecting the chemical oxidation agent into the polluted soil through the liquid adding spray head (21) in the process that the polluted soil enters the treatment box (11) through the material inlet hole (110), so as to perform chemical oxidation treatment on the pollutants in the polluted soil; discharging the polluted soil out of the device box (1) after the chemical oxidation treatment is finished;
s3, when the concentration of pollutants in the polluted soil is high, the infrared heating rods (31) and the mobile motor (32) are controlled to be started by the PLC, the mobile motor (32) drives the mobile screw (33) to rotate, and the mobile plate (30) drives each infrared heating rod (31) to pass through a through hole on the treatment box (11) under the action of the mobile screw (33) and then to be inserted into the polluted soil, so that the pollutants in the polluted soil are heated and desorbed;
s4, controlling the suction pump (42) to be started through the PLC, enabling the polluted gas desorbed from the polluted soil to sequentially pass through the extraction holes (410) and the extraction pipes (41) under the action of the suction pump (42) and then enter the two adsorption tanks (40), and carrying out adsorption treatment on harmful substances in the polluted gas by using the activated carbon adsorbent filled in the adsorption tanks (40).
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