Complete set of organic contaminated soil remediation and improvement equipment

Abstract

The invention belongs to the technical field of soil treatment, and particularly relates to a complete set of organic contaminated soil remediation and improvement equipment. According to the technical scheme, the complete set of organic contaminated soil remediation and improvement equipment comprises a soil contamination pretreatment device, the soil contamination pretreatment device is connected with a soil contamination pyrolysis treatment device through a pipeline, and the soil contamination pyrolysis treatment device is connected with a soil improvement treatment device, a tail gas treatment device and an eluent treatment device. And the soil improvement treatment device is connected with a soil deep treatment device. The invention provides a complete set of organic contaminated soil remediation and improvement equipment which is high in efficiency, low in cost and capable of reducing secondary pollution.

Description

Technical Field

[0001] The invention belongs to the technical field of soil treatment, and in particular relates to a complete set of organic polluted soil restoration and improvement equipment. Background Art

[0002] Organic pollutants enter the soil through leakage, infiltration, etc., causing environmental pollution. These organic substances may be toxic, carcinogenic or persistent, posing a threat to the ecosystem and human health. The treatment of contaminated sludge is an important issue in the field of environmental protection, which directly affects the water, soil and surrounding ecological environment.

[0003] At present, the main methods for soil pollution remediation are physical, chemical and biological remediation technologies. However, these traditional remediation methods have the following main problems:

[0004] First, low efficiency: Traditional methods usually take a long time to significantly reduce the concentration of soil pollutants, which is difficult to meet the urgent needs in practical applications.

[0005] Second, high cost: Many repair methods require expensive equipment and reagents, and the overall repair cost is high, which limits large-scale application.

[0006] Third, secondary pollution: Some methods may cause secondary pollution during the restoration process, such as chemical reagent residues or substandard discharge of waste liquid, further polluting the environment.

[0007] Therefore, there is an urgent need for an efficient, environmentally friendly and cost-effective method to improve contaminated soil into high-quality planting soil, which can deal with various types of organic and inorganic pollutants and reduce the risk of secondary pollution. Summary of the invention

[0008] In order to solve the above problems existing in the prior art, the purpose of the present invention is to provide a complete set of organic contaminated soil remediation and improvement equipment with high efficiency, low cost and reduced secondary pollution.

[0009] The technical solution adopted by the present invention is:

[0010] A complete set of organic contaminated soil remediation and improvement equipment includes a soil pollution pretreatment device, a soil pollution pretreatment device connected to a soil pollution pyrolysis treatment device through a pipeline, the soil pollution pyrolysis treatment device is respectively connected to a soil improvement treatment device, an exhaust gas treatment device and an eluent treatment device, and the soil improvement treatment device is connected to a soil deep treatment device.

[0011] The contaminated soil is sent to the soil pollution pretreatment device for pretreatment, and the pretreated soil is sent to the soil pollution pyrolysis treatment device for pyrolysis reaction. The pyrolyzed soil is sent to the soil improvement treatment device for improvement treatment, and the improved soil is sent to the soil deep treatment device for negative pressure deep treatment. The soil after deep treatment can be discharged. The eluate after pyrolysis is sent to the eluate treatment device for treatment, and stored or discharged after treatment. The waste gas after pyrolysis is sent to the tail gas treatment device for treatment, and the treated tail gas is discharged.

[0012] The soil remediation and improvement equipment of the present invention can perform soil pretreatment and pyrolysis treatment, and improve and deeply treat the pyrolyzed soil, and treat the eluent and waste gas after pyrolysis respectively, so that the gas, liquid and solid after pyrolysis are fully treated. The complete set of organic contaminated soil remediation and improvement equipment of the present invention can improve soil treatment efficiency, reduce operating costs, and reduce secondary pollution, and has important application value and broad application prospects.

[0013] As a preferred embodiment of the present invention, the soil pollution pretreatment device includes a waste soil feed port, a waste downward extrusion chamber, a soil downward extrusion chamber and a waste-removing soil discharge port connected in sequence from top to bottom, the discharge port is connected to the soil pollution pyrolysis treatment device through an eccentric soil reducer, the top of the soil downward extrusion chamber is connected to an arched waste grid, the soil downward extrusion chamber is connected to an isolation cylinder, a lifting and stirring device is installed in the isolation cylinder, a liquid pipeline for spraying leaching liquid and blending liquid extends from the lower part of the isolation cylinder, and a microbubble liquid spraying device is connected to the lower part of the lifting and stirring device.

[0014] The arched waste grid blocks the waste in the soil, so that only the soil passes through the waste grid, and the waste slides along the arched waste grid to the inner wall of the waste downward extrusion cavity. The waste is squeezed downward on the inner wall of the waste downward extrusion cavity and then discharged from the device, preventing the waste from affecting the subsequent soil treatment effect.

[0015] The soil downward extrusion chamber squeezes the soil downward, and part of the soil reaching the bottom of the soil downward extrusion chamber is lifted into the isolation cylinder by the lifting and stirring device, and then discharged into the upper part of the soil downward extrusion chamber from the top of the isolation cylinder. The lifting and stirring device also stirs the soil while lifting the soil, so that part of the soil is circulated and stirred.

[0016] The lower part of the isolation cylinder is extended with a liquid pipeline for spraying eluent and blending liquid to add eluent and blending liquid into the soil. The lower part of the lifting and stirring device is connected with a micro-bubble liquid injection device to spray micro-bubble liquid into the soil. Since part of the soil circulates and moves between the soil downward extrusion cavity and the isolation cylinder and is fully stirred, the eluent and blending liquid can be fully mixed with the soil, and the micro-bubble liquid is also fully mixed with the soil, so that the soil is fully pre-treated in the device, improving the treatment effect of the soil entering the next process.

[0017] As a preferred embodiment of the present invention, the eluent includes a surfactant, a chelating agent, a pH regulator and a biosurfactant; the mass concentration of the surfactant is 0.5-1.5%, the mass concentration of the chelating agent is 0.3-0.8%, the pH of the pH regulator is 7-8, and the mass concentration of the biosurfactant is 0.1-0.3%; the temperature of the eluent is 30-35° C. By rationally configuring the eluent and controlling the temperature of the eluent, the soil is fully and effectively pretreated.

[0018] As a preferred embodiment of the present invention, the soil pollution pyrolysis treatment device includes a pyrolysis tank, the bottom of the pyrolysis tank is connected to a soil delivery pump, the soil delivery pump and the soil pollution pretreatment device are connected through a soil eccentric reducer, a spiral agitator and a heating rod are installed in the pyrolysis tank, the top of the pyrolysis tank is connected to a liquid collecting section, the top of the liquid collecting section is connected to the exhaust gas treatment device through a waste gas discharge pipe, the upper part of the pyrolysis tank is connected to a feeding crawler, the other end of the feeding crawler is connected to the soil improvement treatment device, and the liquid collecting section eluent discharge pipe is connected to the eluent treatment device.

[0019] The pretreated soil is fed into the pyrolysis tank from the bottom by a soil delivery pump, the heating rod in the pyrolysis tank heats the soil, the spiral stirrer fully stirs the soil, and the waste gas and eluent in the contaminated soil are fully separated. The soil settled in the pyrolysis tank is output through the feeding crawler, the filtered eluent is discharged through the eluent discharge pipe, and the rising waste gas is discharged through the waste gas discharge pipe. The present invention can effectively and fully separate the waste gas and eluent in the pretreated contaminated soil, which is convenient for the subsequent treatment of the soil, waste gas and eluent separately.

[0020] As a preferred embodiment of the present invention, the spiral stirrer is connected to the positive electrode of the power supply, and the spiral stirrer is coated with an anode material; the anode material is a ruthenium oxide or iridium oxide layer made of a titanium-based material, boron-doped diamond, lead dioxide, SnO 2 and Ti / SnO 2 One of them.

[0021] As a preferred embodiment of the present invention, the soil improvement treatment device includes a soil improvement processor, an improvement stirring mechanism is installed in the soil improvement processor, and the soil improvement processor is connected to the soil pollution pyrolysis treatment device through a feeding track; the soil deep treatment device includes a negative pressure reactor, a reaction stirring mechanism is installed in the negative pressure reactor, the soil improvement processor is connected to an improved soil discharge pipe for feeding the improved soil into the negative pressure reactor, the negative pressure reactor is connected to a negative pressure tank through a pipeline, and the negative pressure tank is connected to a negative pressure machine through a pipeline; organic matter, inorganic materials, regulators, basic fertilizers and trace element fertilizers are added to the feeding track.

[0022] Various improvement materials can be added to the soil improvement processor and fully stirred through the improvement stirring mechanism to fully improve the soil. The improved soil is added to the negative pressure reactor through the improved soil discharge pipe for negative pressure reaction. After the negative pressure reaction, beneficial microbial preparations are added to the negative pressure reactor to deeply treat the soil. The soil after improvement and negative pressure deep treatment can meet the discharge standard.

[0023] As a preferred embodiment of the present invention, the soil deep processing device also includes a cover opening mechanism for opening and closing the cover of the negative pressure reactor; the cover opening mechanism includes a lifting frame, a lifting motor is installed on the lifting frame, and a U-shaped card for connecting the cover of the negative pressure reactor is connected to the lifting motor; one side of the cover of the negative pressure reactor is hinged to the main body of the negative pressure reactor, and the other side of the cover of the negative pressure reactor is fixed with a lifting handle that cooperates with the U-shaped card and a fixed connector that is detachably connected to the main body of the negative pressure reactor. After the lifting motor pulls the cover of the negative pressure reactor, the cover is flipped and opened, and soil can be added to the negative pressure reactor at this time. After the soil is added, the cover is reliably sealed and connected to the main body of the negative pressure reactor through the fixed connector to ensure a negative pressure environment.

[0024] As a preferred embodiment of the present invention, the soil treatment eluate treatment device includes a mixer, a spiral contact reactor and a water storage tank. The mixer is connected to the soil contamination pyrolysis treatment device through an eluate discharge pipe, and the mixer is connected to the lower part of the spiral contact reactor through a pipeline. The inner surface of the spiral contact reactor is loaded with active materials, and the upper part of the spiral contact reactor is connected to the water storage tank.

[0025] The inner surface of the spiral contact reactor is loaded with active materials. After the eluent enters the spiral contact reactor, it slowly rises along the internal spiral, and the active materials are fully in contact with the eluent, so that the eluent can be fully treated. The treated eluent is discharged from the top of the spiral contact reactor into the water storage tank for storage.

[0026] As a preferred embodiment of the present invention, the present invention also includes a synthesis device; the synthesis device includes a synthesis bracket, a reactor body is fixed in the synthesis bracket, a spiral contact reactor is placed in the reactor body, a synthesis power motor is installed on the synthesis bracket, the output end of the synthesis power motor is connected to the central column of the spiral contact reactor, and active material slurry is added in the reactor body.

[0027] When the synthetic power motor drives the spiral contact reactor to rotate, the active material slurry is fully in contact with the spiral contact reactor, so that the active material can adhere to the surface of the spiral contact reactor.

[0028] As a preferred embodiment of the present invention, the exhaust gas disposal device for soil treatment includes an exhaust gas treatment tank body, in which several layers of contactors are arranged, and the several layers of contactors divide the interior of the exhaust gas treatment tank body into several exhaust gas reaction chambers. The exhaust gas reaction chambers are filled with water, and the surfaces of the contactors are coated with photocatalytic materials and contact catalytic materials. The bottom of the exhaust gas treatment tank body is connected to an exhaust gas discharge pipe, and the soil pollution pyrolysis treatment device is connected to the exhaust gas discharge pipe through the exhaust gas discharge pipe.

[0029] The surface of the contactor is coated with photocatalytic materials and contact catalytic materials. After the exhaust gas enters the exhaust gas treatment tank through the exhaust gas discharge pipe, it is fully contacted with the photocatalytic materials and contact catalytic materials, so that the exhaust gas is fully catalytically reacted and the treated exhaust gas meets the emission standards.

[0030] The beneficial effects of the present invention are:

[0031] The soil remediation and improvement equipment of the present invention can perform soil pretreatment and pyrolysis treatment, and improve and deeply treat the pyrolyzed soil, and treat the eluent and waste gas after pyrolysis respectively, so that the gas, liquid and solid after pyrolysis are fully treated. The complete set of organic contaminated soil remediation and improvement equipment of the present invention can improve soil treatment efficiency, reduce operating costs, and reduce secondary pollution, and has important application value and broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the first direction of the present invention;

[0033] Figure 2 It is a structural schematic diagram of the second aspect of the present invention;

[0034] Figure 3 It is a schematic diagram of the structure of a soil pollution pretreatment device;

[0035] Figure 4 is a cross-sectional view of the soil pollution pretreatment device in a first direction;

[0036] Figure 5 is a cross-sectional view of the soil pollution pretreatment device in the second direction;

[0037] Figure 6 It is a schematic diagram of the structure of a soil pollution pyrolysis treatment device;

[0038] Figure 7 It is a cross-sectional structural diagram of a soil pollution pyrolysis treatment device;

[0039] Figure 8 is a schematic diagram of the structure of a soil treatment device;

[0040] Fig. 9 It is a structural schematic diagram of a soil improvement and treatment device;

[0041] Fig.10 It is a schematic diagram of the structure of the soil deep processing device in the first direction;

[0042] Fig.11 It is a structural schematic diagram of the second direction of the soil deep processing device;

[0043] Fig.12 is a cross-sectional structural diagram of a negative pressure reactor;

[0044] Fig.13 is a schematic diagram of the structure of an eluent processing device;

[0045] Fig.14 It is a schematic diagram of the structure of the spiral contact reactor;

[0046] Fig.15 It is the assembly diagram of the synthesis device and the spiral contact reactor;

[0047] Fig.16 is a schematic diagram of the structure of the exhaust gas treatment device;

[0048] Fig.17 It is a cross-sectional structural diagram of the exhaust gas treatment device.

[0049] In the figure: 1- soil pollution pretreatment device; 2- soil pollution pyrolysis treatment device; 3- soil treatment device; 4- tail gas treatment device; 5- eluent treatment device;

[0050] 11-waste soil feed port; 12-waste downward extrusion chamber; 13-soil downward extrusion chamber; 14-waste soil discharge port; 15-waste grid; 16-isolation cylinder; 17-lifting and stirring device; 18-liquid pipeline; 19-microbubble liquid injection device; 111-feed hopper; 112-neck section; 121-waste step plate; 122-waste discharge pipeline; 123-waste downward extrusion upper spiral; 124-waste downward extrusion lower spiral; 131-soil downward extrusion spiral; 151-vibrator; 152-flexible connection device; 161-trumpet-shaped circulation opening; 162-mud outlet; 163-fixed frame; 171-transmission wheel; 172-lifting and stirring power device; 191-liquid separation plate; 192-microbubble liquid inlet pipeline; 193-microbubble liquid nozzle;

[0051] 21-pyrolysis tank; 22-soil delivery pump; 23-screw stirrer; 24-heating rod; 25-liquid collecting section; 26-waste gas discharge pipe; 27-feeding crawler; 28-eluent discharge pipe; 29-soil eccentric reducer; 211-filter interceptor; 261-downward bending section; 262-closing section; 263-waste gas condensate collector;

[0052] 31-soil improvement processor; 32-improved stirring mechanism; 33-negative pressure reactor; 34-reaction stirring mechanism; 35-negative pressure tank; 36-negative pressure machine; 37-opening mechanism; 311-improved soil discharge pipe; 321-improved power motor; 322-improved stirring paddle; 331-lifting handle; 332-fixed connector; 333-negative pressure gauge; 341-reaction stirring motor; 342-reaction stirring paddle; 361-exhaust pipe; 371-lifting frame; 372-lifting motor; 383-U-type card;

[0053] 41- tail gas treatment tank; 42- contactor; 43- waste gas reaction chamber; 44- waste gas discharge pipe; 45- micro bubble tube; 46- photocatalytic lamp post; 411- micro bubble aeration head; 412- tail gas discharge port;

[0054] 51-mixer; 52-spiral contact reactor; 53-water storage tank; 54-microbubble generator; 55-synthesis device; 511-condensate pipe; 521-outer cylinder; 522-center column; 523-contact spiral; 551-synthesis bracket; 552-reactor body; 553-synthesis power motor. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0056] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0057] like Figure 1 and Figure 2 As shown, the complete set of organic contaminated soil remediation and improvement equipment in this embodiment includes a soil pollution pretreatment device 1, the soil pollution pretreatment device 1 is connected to a soil pollution pyrolysis treatment device 2 through a pipeline, the soil pollution pyrolysis treatment device 2 is respectively connected to a soil improvement treatment device, an exhaust gas treatment device 4 and an eluent treatment device 5, the soil improvement treatment device is connected to a soil deep treatment device, and the soil improvement treatment device and the soil deep treatment device constitute a soil treatment device 3.

[0058] The contaminated soil is sent to the soil pollution pretreatment device 1 for pretreatment, and the pretreated soil is sent to the soil pollution pyrolysis treatment device 2 for pyrolysis reaction. The pyrolyzed soil is sent to the soil improvement treatment device for improvement treatment, and the improved soil is sent to the soil deep treatment device for negative pressure deep treatment. The soil after deep treatment can be discharged. The eluate after pyrolysis is sent to the eluate treatment device 5 for treatment, and stored or discharged after treatment. The waste gas after pyrolysis is sent to the tail gas treatment device 4 for treatment, and the treated tail gas is discharged.

[0059] The soil remediation and improvement equipment of the present invention can perform soil pretreatment and pyrolysis treatment, and improve and deeply treat the pyrolyzed soil, and treat the eluent and waste gas after pyrolysis respectively, so that the gas, liquid and solid after pyrolysis are fully treated. The complete set of organic contaminated soil remediation and improvement equipment of the present invention can improve soil treatment efficiency, reduce operating costs, and reduce secondary pollution, and has important application value and broad application prospects.

[0060] like Figure 3 to Figure 5As shown, the soil pollution pretreatment device 1 includes a waste soil feed port 11, a waste downward extrusion chamber 12, a soil downward extrusion chamber 13 and a waste-removing soil discharge port 14, which are connected in sequence from top to bottom. The discharge port is connected to the soil pollution pyrolysis treatment device 2 through an eccentric soil reducer 29. The top of the soil downward extrusion chamber 13 is connected to an arched waste grid 15. The soil downward extrusion chamber 13 is connected to an isolation cylinder 16, and a lifting and stirring device 17 is installed in the isolation cylinder 16. The lower part of the isolation cylinder 16 extends into a liquid pipeline 18 for spraying leaching liquid and blending liquid, and the lower part of the lifting and stirring device 17 is connected to a microbubble liquid injection device 19.

[0061] The arched waste grid 15 blocks the waste in the soil, so that only the soil passes through the waste grid 15, and the waste slides along the arched waste grid 15 to the inner wall of the waste downward extrusion cavity 12. The waste is squeezed downward on the inner wall of the waste downward extrusion cavity 12 and then discharged from the device, preventing the waste from affecting the subsequent treatment effect of the soil.

[0062] The soil downward extrusion chamber 13 extrudes the soil downward, and part of the soil reaching the bottom of the soil downward extrusion chamber 13 is lifted into the isolation cylinder 16 by the lifting and stirring device 17, and then discharged into the upper part of the soil downward extrusion chamber 13 from the top of the isolation cylinder 16. The lifting and stirring device 17 also stirs the soil while lifting the soil, so that part of the soil is circulated and stirred.

[0063] The lower part of the isolation cylinder 16 is provided with a liquid pipeline 18 for spraying eluent and blending liquid to add eluent and blending liquid into the soil. The lower part of the lifting and stirring device 17 is connected with a microbubble liquid spraying device 19 to spray microbubble liquid into the soil. Since part of the soil circulates and moves between the soil downward extrusion cavity 13 and the isolation cylinder 16 and is fully stirred, the eluent and blending liquid can be fully mixed with the soil, and the microbubble liquid is also fully mixed with the soil, so that the soil is fully pre-treated in the device, improving the treatment effect of the soil entering the next process.

[0064] Among them, a waste step plate 121 is arranged between the waste downward extrusion chamber 12 and the soil downward extrusion chamber 13, and a plurality of waste discharge pipes 122 are connected to the waste step plate 121. The waste grid 15 extends into the waste downward extrusion chamber 12 so as to discharge the waste to the inner wall of the waste downward extrusion chamber 12. Under the blocking and guiding effect of the arched waste grid 15, the waste in the soil is squeezed along the waste downward extrusion chamber 12 to the waste step plate 121, and then discharged from the device by the plurality of waste discharge pipes 122, so as to realize the reliable separation of the waste in the soil and prevent the waste from affecting the subsequent treatment effect of the soil.

[0065] Furthermore, a vibrator 151 is installed on the waste grid 15. The vibrator 151 can make the waste on the waste grid 15 slide toward the inner wall of the waste downward extrusion cavity 12 to prevent the waste from being blocked on the waste grid 15. The waste grid 15 is connected to the top of the soil downward extrusion cavity 13 through a flexible connection device 152.

[0066] The inner wall of the waste downward extrusion chamber 12 is provided with an upper waste downward extrusion spiral 123 and a lower waste downward extrusion spiral 124, and the height of the spiral teeth of the upper waste downward extrusion spiral 123 and the height of the spiral teeth of the lower waste downward extrusion spiral 124 are the same. The spiral teeth of the upper waste downward extrusion spiral 123 are smaller, and waste can easily enter its extrusion space, so that waste sliding off the waste grid 15 can be smoothly extruded to the lower waste downward extrusion spiral 124. The spiral teeth of the lower waste downward extrusion spiral 124 are larger, and its extrusion effect is better, so that waste can be reliably extruded onto the waste step plate 121, and then discharged from the waste discharge pipeline 122, avoiding the situation where waste cannot enter the waste discharge pipeline 122.

[0067] Specifically, the lifting and stirring device 17 is equipped with a transmission wheel 171, and the transmission wheel 171 is connected to a lifting and stirring power device 172 for driving the transmission wheel 171 to rotate. The lifting and stirring power device 172 drives the transmission wheel 171 to rotate, and the transmission wheel 171 drives the lifting and stirring device 17 to rotate, so that the soil is lifted and stirred in the isolation cylinder 16 in a spiral manner, so that part of the soil is circulated and stirred between the soil downward extrusion cavity 13 and the isolation cylinder 16. The isolation cylinder 16 is fixed in the soil downward extrusion cavity 13 by a fixing frame 163.

[0068] The lifting and stirring power device 172 may include a motor, the output end of the motor is connected to a reducer, the output end of the reducer is connected to a driving pulley, and the driving pulley is connected to the transmission wheel 171 through a belt transmission. In addition, the transmission wheel 171 may be provided at the upper and lower parts of the lifting and stirring device 17 to improve the stability of the lifting and stirring device 17 during rotation.

[0069] A soil downward extrusion spiral 131 is provided on the inner wall of the soil downward extrusion cavity 13. During the circulation of soil between the soil downward extrusion cavity 13 and the isolation cylinder 16, the soil between the soil downward extrusion cavity 13 and the outer wall of the isolation cylinder 16 can move downward along the soil downward extrusion spiral 131 to prevent the soil from blocking the passage.

[0070] Specifically, the microbubble liquid injection device 19 includes a liquid separation plate 191, which is fixed to the bottom of the lifting and stirring device 17. The bottom of the liquid separation plate 191 is connected to a microbubble liquid inlet pipeline 192, and the edge of the liquid separation plate 191 is provided with a plurality of microbubble liquid nozzles 193 connected to the microbubble liquid inlet pipeline 192. The microbubble liquid inlet pipeline 192 introduces the microbubble liquid into the liquid separation plate 191, and the plurality of microbubble nozzles on the liquid separation plate 191 uniformly spray the microbubble liquid, so that the microbubble liquid is fully mixed with the soil.

[0071] The microbubble liquid is sprayed out from the microbubble liquid nozzle 193, and is specifically determined according to the soil pollution condition of the waste soil feed port 11: when COD is less than 1000 mg / L, oxygen is used as the microbubble gas; when COD is greater than 1000 mg / L, ozone is used as the microbubble gas.

[0072] In order to facilitate the soil to enter the isolation cylinder 16, a trumpet-shaped circulation opening 161 is provided at the bottom of the isolation cylinder 16, and the liquid pipeline 18 extends into the trumpet-shaped circulation opening 161. A plurality of mud outlets 162 are provided at the top of the isolation cylinder 16. The trumpet-shaped circulation opening 161 at the bottom of the isolation cylinder 16 can facilitate the soil to enter the isolation cylinder 16, form a circulation from the soil, and the eluent, the blending liquid and the micro-bubble liquid can be more fully mixed with the soil at the trumpet-shaped circulation opening 161.

[0073] Specifically, the waste soil feed port 11 comprises a trumpet-shaped feed hopper 111 and a necking section 112, wherein the diameter of the necking section is smaller than the diameter of the waste downward extrusion cavity 12. The step between the necking section and the waste downward extrusion cavity 12 has a blocking effect to block the waste soil entering from the waste soil feed port 11.

[0074] The eluent includes a surfactant, a chelating agent, a pH regulator and a biosurfactant; the mass concentration of the surfactant is 0.5-1.5%, the mass concentration of the chelating agent is 0.3-0.8%, the pH of the pH regulator is 7-8, and the mass concentration of the biosurfactant is 0.1-0.3%; the temperature of the eluent is 30-35° C. By rationally configuring the eluent and controlling the temperature of the eluent, the soil is fully and effectively pretreated.

[0075] like Figure 6 and Figure 7As shown, the soil pollution pyrolysis treatment device 2 includes a pyrolysis tank 21, the bottom of the pyrolysis tank 21 is connected to a soil delivery pump 22, the soil delivery pump 22 is connected to the soil pollution pretreatment device 1 through a soil eccentric reducer 29, a spiral agitator 23 and a heating rod 24 are installed in the pyrolysis tank 21, the top of the pyrolysis tank 21 is connected to a liquid collecting section 25, the top of the liquid collecting section 25 is connected to the exhaust gas treatment device 4 through an exhaust gas discharge pipe 26, the upper part of the pyrolysis tank 21 is connected to a feeding crawler 27, the other end of the feeding crawler 27 is connected to the soil improvement treatment device, and the eluent discharge pipe 28 of the liquid collecting section 25 is connected to the eluent treatment device 5.

[0076] The pretreated soil is fed into the pyrolysis tank 21 from the bottom by the soil delivery pump 22, the heating rod 24 in the pyrolysis tank 21 heats the soil, the spiral stirrer 23 fully stirs the soil, and the waste gas and eluent in the contaminated soil are fully separated. The settled soil in the pyrolysis tank 21 is output through the feeding crawler 27, the filtered eluent is discharged through the eluent discharge pipe 28, and the rising waste gas is discharged through the waste gas discharge pipe 26. The present invention can effectively and fully separate the waste gas and eluent in the pretreated contaminated soil, which is convenient for the subsequent treatment of the soil, waste gas and eluent respectively.

[0077] Furthermore, a filter interceptor 211 is provided on the upper part of the pyrolysis tank 21, and the feed track is located at the lower side of the filter interceptor 211. The filter interceptor 211 can block the soil and prevent large pieces of soil from entering the liquid collection section 25, thereby realizing reliable separation of the soil and the eluent.

[0078] The lower part of the pyrolysis tank 21 is conical, and the outlet of the soil delivery pump 22 is connected to the conical bottom of the pyrolysis tank 21 .

[0079] The liquid collecting section 25 gradually decreases in diameter from bottom to top, the lower end of the liquid collecting section 25 smoothly transitions with the pyrolysis tank 21, and the upper end of the liquid collecting section 25 smoothly transitions with the exhaust gas discharge pipe 26. The liquid collecting section 25 is a reduced diameter pipe, which is convenient for fully discharging the eluent therein.

[0080] Specifically, there are several spiral stirrers 23, the heating rod 24 is arranged in the middle of the pyrolysis tank 21, and several spiral stirrers 23 are arranged around the heating rod 24. Several spiral stirrers 23 fully stir the soil to ensure that the soil treatment is more uniform.

[0081] Furthermore, the spiral stirrer 23 is connected to a positive electrode of a power source, and an anode material is coated on the spiral stirrer 23. The power supply voltage is 1 to 100 V, and the current density is 1 to 800 mA / cm 2 The anode material is coated on the stirring blades of the spiral stirrer 23, which can enhance the electrocatalytic effect on the soil and fully degrade the pollutants in the soil.

[0082] The anode material is a ruthenium oxide or iridium oxide layer made of titanium-based materials, boron-doped diamond, lead dioxide, SnO 2 and Ti / SnO 2 And other conventional anode materials.

[0083] Furthermore, the exhaust gas discharge pipe 26 has a downward bending section 261, and the end of the downward bending section 261 is connected to a closing section 262. The exhaust gas passes through the downward bending section 261, so that the liquid in the waste can be fully condensed. The bottom of the downward bending section 261 is connected to an exhaust gas condensate collector 263. The condensate can be collected by the exhaust gas condensate collector 263, reducing the liquid in the exhaust gas and facilitating the treatment of the exhaust gas.

[0084] like Figure 8 to Figure 12 As shown, the soil improvement treatment device includes a soil improvement processor 31, in which an improvement stirring mechanism 32 is installed, and the soil improvement processor 31 is connected to the soil pollution pyrolysis treatment device 2 through a feeding crawler 27; the soil deep treatment device includes a negative pressure reactor 33, in which a reaction stirring mechanism 34 is installed, and the soil improvement processor 31 is connected to an improved soil discharge pipe 311 for feeding the improved soil into the negative pressure reactor 33, and the negative pressure reactor 33 is connected to a negative pressure tank 35 through a pipeline, and the negative pressure tank 35 is connected to a negative pressure machine 36 through a pipeline; organic matter, inorganic materials, regulators, basic fertilizers and trace element fertilizers are added to the feeding crawler 27.

[0085] Various improvement materials can be added to the soil improvement processor 31 of the present invention, and the improvement stirring mechanism 32 is used to fully stir the soil, so that the soil is fully improved. The improved soil is added to the negative pressure reactor 33 through the improved soil discharge pipe 311 to perform a negative pressure reaction. After the negative pressure reaction, a beneficial microbial preparation is added to the negative pressure reactor 33, so that the soil is deeply treated. The soil after improvement and negative pressure deep treatment can meet the discharge standard.

[0086] Among them, the soil improvement processing device is connected to a feeding crawler 27, and organic matter, inorganic materials, regulators, basic fertilizers and trace element fertilizers are added to the feeding crawler 27. According to the properties of the feed soil, stirring is performed in the soil improvement processor 311, and organic matter, inorganic materials, regulators, basic fertilizers and trace element fertilizers are added. The organic matter is humus, compost, etc., and the mass ratio is 1:0.5 to 1:2. The inorganic materials are sand, vermiculite, etc., and the mass ratio is 1:0.2 to 1:0.5; they are used to improve the physical structure of the soil and improve the permeability and water retention of the soil. The regulator is lime, sulfur, etc., which is used to adjust the pH value of the soil to the appropriate range of 6.5 to 7.5. According to crop needs, basic fertilizers such as nitrogen, phosphorus, and potassium and trace element fertilizers (0.2 to 0.5 kg / m 3) to increase the nutrient content of the soil.

[0087] Specifically, the improved stirring mechanism 32 includes an improved power motor 321 , which is installed on the soil improvement processor 31 , and the output end of the improved power motor 321 is connected to an improved stirring paddle 322 , which extends into the soil improvement processor 31 .

[0088] Furthermore, the soil deep treatment device also includes a cover opening mechanism 37 for opening and closing the cover of the negative pressure reactor 33. In order to ensure the airtightness of the negative pressure reactor 33 during the negative pressure reaction, the improved soil discharge pipe 311 is not directly connected to the negative pressure reactor 33. After the cover opening mechanism 37 opens the cover of the negative pressure reactor 33, the improved soil discharge pipe 311 adds soil to the negative pressure reactor 33. After the cover is tightly closed, the negative pressure reaction is carried out to ensure the negative pressure effect.

[0089] Specifically, the cover opening mechanism 37 includes a lifting frame 371, on which a lifting motor 372 is installed, and a U-shaped clip 383 for connecting the cover of the negative pressure reactor 33 is connected to the lifting motor 372; one side of the cover of the negative pressure reactor 33 is hinged with the main body of the negative pressure reactor 33, and the other side of the cover of the negative pressure reactor 33 is fixed with a lifting handle 331 that cooperates with the U-shaped clip 383 and a fixed connector 332 that is detachably connected to the main body of the negative pressure reactor 33. After the lifting motor 372 pulls the cover of the negative pressure reactor 33, the cover is flipped and opened, and soil can be added to the negative pressure reactor 33 at this time. After the soil is added, the cover is reliably sealed and connected to the main body of the negative pressure reactor 33 through the fixed connector 332 to ensure a negative pressure environment.

[0090] Specifically, the reaction stirring mechanism 34 includes a reaction stirring motor 341 , which is installed on the negative pressure reactor 33 , and an output end of the reaction stirring motor 341 is connected to a reaction stirring paddle 342 , which extends into the negative pressure reactor 33 .

[0091] A negative pressure gauge 333 is installed on the cover of the negative pressure reactor 33. An exhaust pipe 361 is connected to the negative pressure machine 36. The exhaust pipe 361 can send the exhausted gas to the exhaust gas treatment device.

[0092] The negative pressure reactor 33 adds beneficial microbial preparations after negative pressure reaction. The beneficial microbial preparations are one of nitrogen-fixing bacteria, phosphorus-dissolving bacteria and organic matter-decomposing bacteria. The beneficial microbial preparations are used to enhance the biological activity of the soil, and the addition amount is 106 to 108 bacteria / m 3 .

[0093] like Fig.13 and Fig.14As shown, the soil treatment eluent treatment device 5 includes a mixer 51, a spiral contact reactor 52 and a water storage tank 53. The mixer 51 is connected to the soil contamination pyrolysis treatment device 2 through the eluent discharge pipe 28. The mixer 51 is connected to the lower part of the spiral contact reactor 52 through a pipeline. The inner surface of the spiral contact reactor 52 is loaded with active materials. The upper part of the spiral contact reactor 52 is connected to the water storage tank 53.

[0094] The inner surface of the spiral contact reactor 52 of the present invention is loaded with active materials. After the eluent enters the spiral contact reactor 52, it slowly rises along the internal spiral, and the active materials are fully in contact with the eluent, so that the eluent can be fully treated. The treated eluent is discharged from the top of the spiral contact reactor 52 into the water storage tank 53 for storage.

[0095] Furthermore, the mixer 51 is connected to a microbubble generator 54 for generating microbubble liquid through a pipeline. The microbubble liquid generated by the microbubble generator 54 is transported to the mixer 51, and the microbubble liquid also enters the spiral contact reactor 52 along with the elution.

[0096] The water storage tank 53 is connected to the micro-bubble generator 54 through a pipeline. The micro-bubble generator 54 needs clean water to generate micro-bubble liquid, and the treated water in the water storage tank 53 can provide the water source for the micro-bubble generator 54.

[0097] The mixer 51 is connected with a condensate pipe 511 for feeding condensate. After the condensate in the tail gas after soil treatment is collected, it can be discharged into the mixer 51, so that it can be processed together by the spiral contact reactor 52.

[0098] Specifically, the spiral contact reactor 52 includes an outer cylinder 521, a central column 522 is fixed inside the outer cylinder 521, a contact spiral 523 is connected between the central column 522 and the inner wall of the outer cylinder 521, and the active material is loaded on the surface of the contact spiral 523. The contact spiral 523 between the central column 522 and the outer cylinder 521 forms a channel for the eluent, and the eluent fully contacts and reacts with the active material on the contact spiral 523 during the process of slowly rising along the contact spiral 523, so that the eluent is fully processed.

[0099] Furthermore, the surface of the contact spiral 523 is rough before the active material is loaded. The original surface of the contact spiral 523 is rough, which is convenient for loading the base material. Among them, the active material is an iron-based material or a carbon-based material. The active material is mainly a material that can catalyze the reaction with ozone microbubbles, and the iron-based (FeS 2 , ZVI) and carbon-based materials (CNT, biochar).

[0100] like Fig.15As shown, the synthesis device 55 of the soil treatment eluent treatment device 5 includes a synthesis bracket 551, a reactor body 552 is fixed in the synthesis bracket 551, the spiral contact reactor 52 is placed in the reactor body 552, a synthesis power motor 553 is installed on the synthesis bracket 551, the output end of the synthesis power motor 553 is connected to the central column 522 of the spiral contact reactor 52, and the reactor body 552 is added with active material slurry. A heating device is arranged on the inner wall of the reactor body 552. The top of the reactor body 552 is connected to a reactor cover, and the output shaft of the synthesis power motor 553 passes through the reactor cover. In the process of the synthesis power motor 553 driving the spiral contact reactor 52 to rotate, the active material slurry is fully in contact with the spiral contact reactor 52, so that the active material can adhere to the surface of the spiral contact reactor 52.

[0101] like Fig.16 and Fig.17 As shown, the tail gas disposal device for soil treatment includes a tail gas treatment tank body 41, in which a plurality of layers of contactors 42 are arranged, and the plurality of layers of contactors 42 divide the interior of the tail gas treatment tank body 41 into a plurality of waste gas reaction chambers 43, and the waste gas reaction chambers 43 are filled with water. The surface of the contactor 42 is coated with a photocatalytic material and a contact catalytic material, and the bottom of the tail gas treatment tank body 41 is connected to a waste gas discharge pipe 44, and the soil pollution pyrolysis treatment device 2 is connected to the waste gas discharge pipe 44 through a waste gas discharge pipe 26.

[0102] The surface of the contactor 42 is coated with photocatalytic materials and contact catalytic materials. After the exhaust gas enters the exhaust gas treatment tank 41 through the exhaust gas discharge pipe 44, it is fully contacted with the photocatalytic materials and contact catalytic materials, so that the exhaust gas is fully catalytically reacted and the treated exhaust gas meets the emission standards.

[0103] The end of the waste gas discharge pipe 44 away from the tail gas treatment tank body 41 is connected to the waste gas discharge pipe 26 for feeding waste gas. The waste gas generated after the pyrolysis treatment of the soil is discharged into the waste gas discharge pipe 26, and then sent into the tail gas treatment tank body 41 through the waste gas discharge pipe 44. The section where the waste gas discharge pipe 26 is connected to the waste gas discharge pipe 44 is a reduced diameter section, so that the liquid in the tail gas treatment tank body 41 cannot flow back.

[0104] The exhaust gas treatment tank 41 is connected with a microbubble tube 45. The microbubble tube 45 delivers microbubble liquid into the exhaust gas treatment tank 41, and the microbubbles react with the photocatalytic material and the contact catalytic material on the surface of the contactor 42. A plurality of microbubble aeration heads 411 are arranged in the exhaust gas treatment tank 41, and the microbubble aeration heads 411 are connected with the microbubble tube 45. The plurality of microbubble aeration heads 411 can spray microbubble liquid from different positions, so that the microbubble liquid is more evenly distributed in the exhaust gas treatment tank 41. The plurality of microbubble aeration heads 411 are distributed in a ring shape in the exhaust gas treatment tank 41.

[0105] The exhaust gas treatment tank body 41 is provided with a plurality of photocatalytic lamp posts 46, and the photocatalytic lamp posts 46 penetrate a plurality of contactors 42. The photocatalytic lamp posts 46 can promote the catalytic reaction on the contactors 42. The top of the exhaust gas treatment tank body 41 is provided with an exhaust gas discharge port 412. The treated gas is discharged from the exhaust gas discharge port 412. The bottom of the exhaust gas treatment tank body 41 is conical, and the exhaust gas discharge pipe 44 is connected to the conical bottom of the exhaust gas treatment tank body 41.

[0106] The present invention is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the protection scope of the present invention.

Claims

1. A complete set of organic contaminated soil remediation and improvement equipment, characterized by: The invention comprises a soil pollution pretreatment device (1), the soil pollution pretreatment device (1) is connected to a soil pollution pyrolysis treatment device (2) via a pipeline, the soil pollution pyrolysis treatment device (2) is respectively connected to a soil improvement treatment device, an exhaust gas treatment device (4) and an eluent treatment device (5), and the soil improvement treatment device is connected to a soil deep treatment device.

2. A complete set of organic contaminated soil remediation and improvement equipment according to claim 1, characterized in that: The soil pollution pretreatment device (1) comprises a waste soil feed port (11), a waste downward extrusion chamber (12), a soil downward extrusion chamber (13) and a waste-removed soil discharge port (14) connected in sequence from top to bottom; the discharge port is connected to the soil pollution pyrolysis treatment device (2) via a soil eccentric reducer (29); the top of the soil downward extrusion chamber (13) is connected to an arched waste grid (15); the soil downward extrusion chamber (13) is connected to an isolation cylinder (16); a lifting and stirring device (17) is installed in the isolation cylinder (16); a liquid pipeline (18) for spraying leaching liquid and blending liquid extends into the lower part of the isolation cylinder (16); and a microbubble liquid spraying device (19) is connected to the lower part of the lifting and stirring device (17).

3. A complete set of organic contaminated soil remediation and improvement equipment according to claim 2, characterized in that: The eluent comprises a surfactant, a chelating agent, a pH regulator and a biosurfactant; the mass concentration of the surfactant is 0.5-1.5%, the mass concentration of the chelating agent is 0.3-0.8%, the pH of the pH regulator is 7-8, and the mass concentration of the biosurfactant is 0.1-0.3%; the temperature of the eluent is 30-35°C.

4. A complete set of organic contaminated soil remediation and improvement equipment according to claim 1, characterized in that: The soil pollution pyrolysis treatment device (2) comprises a pyrolysis tank (21), the bottom of the pyrolysis tank (21) is connected to a soil delivery pump (22), the soil delivery pump (22) is connected to the soil pollution pretreatment device (1) via a soil eccentric reducer (29), a spiral stirrer (23) and a heating rod (24) are installed in the pyrolysis tank (21), the top of the pyrolysis tank (21) is connected to a liquid collection section (25), the top of the liquid collection section (25) is connected to an exhaust gas treatment device (4) via an exhaust gas discharge pipe (26), the upper part of the pyrolysis tank (21) is connected to a feeding crawler (27), the other end of the feeding crawler (27) is connected to the soil improvement treatment device, and the eluent discharge pipe (28) of the liquid collection section (25) is connected to the eluent treatment device (5).

5. A complete set of organic contaminated soil remediation and improvement equipment according to claim 4, characterized in that: The spiral stirrer (23) is externally connected to a positive pole of a power source, and an anode material is coated on the spiral stirrer (23); the anode material is one of a ruthenium oxide or iridium oxide layer made of a titanium-based material, boron-doped diamond, lead dioxide, SnO2 and Ti / SnO2.

6. A complete set of organic contaminated soil remediation and improvement equipment according to claim 1, characterized in that: The soil improvement treatment device comprises a soil improvement processor (31), a reaction stirring mechanism (32) is installed in the soil improvement processor (31), and the soil improvement processor (31) is connected to the soil contamination pyrolysis treatment device (2) through a feeding crawler (27); the soil deep treatment device comprises a negative pressure reactor (33), a reaction stirring mechanism (34) is installed in the negative pressure reactor (33), the soil improvement processor (31) is connected to an improved soil discharge pipe (311) for feeding improved soil into the negative pressure reactor (33), the negative pressure reactor (33) is connected to a negative pressure tank (35) through a pipeline, and the negative pressure tank (35) is connected to a negative pressure machine (36) through a pipeline; organic matter, inorganic materials, regulators, basic fertilizers and trace element fertilizers are added to the feeding crawler (27).

7. A complete set of organic contaminated soil remediation and improvement equipment according to claim 6, characterized in that: The soil deep treatment device also includes a cover opening mechanism (37) for opening and closing the cover of the negative pressure reactor (33); the cover opening mechanism (37) includes a lifting frame (371), a lifting motor (372) is installed on the lifting frame (371), and a U-shaped clip (383) for connecting the cover of the negative pressure reactor (33) is connected to the lifting motor (372); one side of the cover of the negative pressure reactor (33) is hinged to the main body of the negative pressure reactor (33), and the other side of the cover of the negative pressure reactor (33) is fixed with a lifting handle (331) matched with the U-shaped clip (383) and a fixed connection piece (332) detachably connected to the main body of the negative pressure reactor (33).

8. The complete set of organic contaminated soil remediation and improvement equipment according to claim 1 is characterized by: The soil treatment eluate treatment device (5) comprises a mixer (51), a spiral contact reactor (52) and a water storage tank (53); the mixer (51) is connected to the soil contamination pyrolysis treatment device (2) via an eluate discharge pipe (28); the mixer (51) is connected to the lower part of the spiral contact reactor (52) via a pipeline; the inner surface of the spiral contact reactor (52) is loaded with active materials; and the upper part of the spiral contact reactor (52) is connected to the water storage tank (53).

9. A complete set of organic contaminated soil remediation and improvement equipment according to claim 8, characterized in that: It also includes a synthesis device (55); the synthesis device (55) includes a synthesis bracket (551), a reactor body (552) is fixed in the synthesis bracket (551), a spiral contact reactor (52) is placed in the reactor body (552), a synthesis power motor (553) is installed on the synthesis bracket (551), the output end of the synthesis power motor (553) is connected to the central column (522) of the spiral contact reactor (52), and active material slurry is added in the reactor body (552).

10. A complete set of organic contaminated soil remediation and improvement equipment according to claim 1, characterized in that: The tail gas treatment device for soil treatment comprises a tail gas treatment tank body (41), wherein a plurality of contactors (42) are arranged in the tail gas treatment tank body (41), wherein the plurality of contactors (42) divide the interior of the tail gas treatment tank body (41) into a plurality of waste gas reaction chambers (43), wherein the waste gas reaction chambers (43) are filled with water, and the surfaces of the contactors (42) are coated with photocatalytic materials and contact catalytic materials, wherein the bottom of the tail gas treatment tank body (41) is connected to a waste gas discharge pipe (44), and the soil contamination pyrolysis treatment device (2) is connected to the waste gas discharge pipe (44) via a waste gas discharge pipe (26).

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