A waste gas treatment device and method for remediation of organically contaminated soil

Abstract

The application discloses a waste gas treatment equipment for organic contaminated soil remediation, and relates to the technical field of soil remediation waste gas treatment.The equipment comprises a body, wherein an absorption chamber, a combustion chamber, an adsorption chamber, a biological treatment chamber and an electrolysis chamber are arranged in the body; the absorption chamber is connected with an air inlet pipe; the combustion chamber is connected with the absorption chamber through a first air conveying pipe; the adsorption chamber is connected with the combustion chamber through a second air conveying pipe; the biological treatment chamber is connected with the adsorption chamber through a third air conveying pipe; the electrolysis chamber is connected with the biological treatment chamber through a fourth air conveying pipe; the absorption chamber is used for absorbing organic waste gas which is easily soluble in water; the combustion chamber is used for oxidizing and pyrolyzing the organic waste gas under a high-temperature environment; the adsorption chamber is used for adsorbing and concentrating the organic waste gas; the biological treatment chamber is used for decomposing the organic waste gas through microorganisms; and the electrolysis chamber is used for ionizing the organic waste gas; and the gas treated by the electrolysis chamber is discharged through an air outlet pipe.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of soil remediation waste gas treatment technology, in particular to a waste gas treatment equipment and method for organic contaminated soil remediation. BACKGROUND

[0002] Soil remediation is a technical measure to restore the normal function of contaminated soil. In the soil remediation industry, there are more than 100 soil remediation technologies, and more than 10 common technologies, which can be roughly divided into physical, chemical and biological methods. When using chemical methods, corresponding chemicals need to be added to the soil to be remediated. In order to facilitate the addition of chemicals, a corresponding discharge equipment is needed to realize the discharge.

[0003] However, the waste gas treatment equipment for soil remediation on the market has the following problems: 1. When burning organic waste gas, the burning intensity cannot be automatically adjusted according to the content of the organic waste gas. When the amount of waste gas is small, it causes resource waste and is not conducive to energy saving. When the content of waste gas is too much, it leads to insufficient combustion and incomplete waste gas treatment, affecting the treatment quality of organic waste gas; 2. When treating organic waste gas, a large amount of gas is directly introduced, which can cause the gas to be not treated in time, seriously affecting the treatment efficiency of the device. SUMMARY

[0004] The purpose of the present application is to provide a waste gas treatment equipment and method for organic contaminated soil remediation to solve the problems raised in the background.

[0005] In order to achieve the above purpose, the present application provides the following technical scheme: a waste gas treatment equipment for organic contaminated soil remediation, comprising a body, an absorption chamber, a combustion chamber, an adsorption chamber, a biological treatment chamber and an electrolysis chamber are arranged in the body, the absorption chamber is connected with an air inlet pipe, the combustion chamber is connected with the absorption chamber through a first gas inlet pipe, the adsorption chamber is connected with the combustion chamber through a second gas inlet pipe, the biological treatment chamber is connected with the adsorption chamber through a third gas inlet pipe, and the electrolysis chamber is connected with the biological treatment chamber through a fourth gas inlet pipe.

[0006] The absorption chamber is used to absorb organic waste gas that is easily soluble in water, the combustion chamber is used to oxidize and pyrolyze organic waste gas in a high temperature environment, the adsorption chamber is used to adsorb and concentrate organic waste gas, the biological treatment chamber is used to decompose organic waste gas by microorganisms, and the electrolysis chamber is used to ionize organic waste gas. The gas treated by the electrolysis chamber is discharged through an exhaust pipe.

[0007] Preferably, the combustion chamber is provided with a rotating device capable of stirring the organic exhaust gas, and further comprises a control box capable of controlling the rotating speed of the rotating device, the control box comprising a box body, a detection rod penetrating through the first gas pipe and the box body, a rack arranged on the detection rod, a gear meshingly connected with the rack, a rotating disc coaxially rotating with the gear, a driving rod arranged on the rotating disc, a sliding block arranged on the upper side of the rotating disc, and a controller arranged on the body.

[0008] Preferably, the box body is assembled and connected to the body, the detection rod is provided with a first limiting block located between the first gas pipe and the box body, the detection rod is provided with an inclined surface at the end of the first gas pipe, the gear is rotationally connected with the rotating disc on the box body, the sliding block is provided with a groove accommodating the driving rod, the driving rod intermittently drives the sliding block to slide through the groove, the upper end of the sliding block is provided with a control block penetrating through the body, the body is provided with a sliding groove for the sliding of the control block, the controller is provided with a control button for the pushing of the control block, and the sliding block and the box body are provided with a first spring and a damper, the first spring being arranged outside the damper.

[0009] Preferably, the rotating device comprises a motor arranged on the outer wall of the combustion chamber, a rotating shaft fixedly connected with the output end of the motor, two symmetrical groups of heat-resistant blades arranged on the rotating shaft, and a filter screen arranged on the heat-resistant blades, the motor being electrically connected with the controller, and the rotating shaft penetrating through the outer wall of the combustion chamber through a bearing.

[0010] Preferably, the combustion chamber is provided with a burner at the bottom, the burner is provided with combustion nozzles, the combustion nozzles are in communication with fuel and are symmetrically arranged on both sides of the burner, an oxygen pipe penetrating through the burner is arranged between the two combustion nozzles, and the oxygen pipe is connected with an oxygen pump.

[0011] Preferably, the combustion chamber is provided with an intermittent exhaust device penetrating through the rotating shaft, the intermittent exhaust device comprising an outer shell fixedly connected with the combustion chamber, an eccentric wheel sleeved on the rotating shaft, a sealing sliding block for plugging the second gas pipe in rolling connection with the eccentric wheel, the sealing sliding block penetrating through the outer shell and extending out of the inner cavity of the outer shell, a second limiting block in sliding connection with the side wall of the outer shell arranged on the sealing sliding block, and a second spring arranged between the second limiting block and the side wall of the outer shell.

[0012] Preferably, the second gas pipe is provided with a plurality of first gas jets at a portion of the adsorption chamber, the adsorption chamber is provided with a plurality of adsorption plates parallel to the first gas jets, the adsorption plates are arranged on the inner wall of the adsorption chamber and are provided with activated carbon layers for adsorbing organic waste gas, and the third gas pipe is provided with a fan at a portion of the adsorption chamber, and the fan is used for guiding the organic waste gas.

[0013] Preferably, the absorption chamber is provided with an absorption bend pipe connected with the gas inlet pipe, the absorption chamber is provided with absorption liquid submerging the absorption bend pipe, the biological treatment chamber is provided with a plurality of biofilm layers attached with microorganisms, and the biofilm layers are further provided with corresponding gas films and liquid films.

[0014] Preferably, the absorption chamber is provided with an absorption bend pipe connected with the gas inlet pipe, the fourth gas pipe is used for guiding the organic waste gas decomposed by the biological treatment chamber into the electrolysis chamber, and a portion of the electrolysis chamber is provided with a plurality of second gas jets, the electrolysis chamber is provided with a plurality of electrolysis pipes fixedly connected with the side wall of the electrolysis chamber, the electrolysis pipes include inner pipes and outer pipes, the inner pipes and the outer pipes are metal pipes and are connected with two poles of a high-voltage power supply box respectively, the inner pipes are uniformly provided with a plurality of small holes, the outer pipes are photocatalytic outer pipes, and the electrolysis pipes are connected by pipes.

[0015] An organic waste gas treatment method for repairing organic contaminated soil, comprising the following method steps:

[0016] S1, the organic waste gas enters the absorption chamber through the gas inlet pipe and is absorbed by the absorption chamber;

[0017] S2, the organic waste gas enters the combustion chamber through the first gas pipe and is oxidized and pyrolyzed under a high-temperature environment;

[0018] S3, the organic waste gas enters the adsorption chamber through the second gas pipe, and the activated carbon layer adsorbs and concentrates the organic waste gas;

[0019] S4, the organic waste gas enters the biological treatment chamber through the third gas pipe and is decomposed by microorganisms;

[0020] S5, the organic waste gas enters the electrolysis chamber through the fourth gas pipe, is ionized by the electrolysis chamber, and is then discharged through the exhaust pipe.

[0021] In the above technical solution, the present application has the following technical effects and advantages:

[0022] First, the organic waste gas through the intake pipe into the absorption chamber, and then through the first gas pipe into the combustion chamber, then through the second gas pipe into the adsorption chamber, and then through the third gas pipe into the biological treatment chamber, and finally through the fourth gas pipe into the electrolytic chamber, after the treatment is completed through the exhaust pipe exhaust.

[0023] When the waste gas content is too much, the deeper the contact degree of the control block and the control button, the greater the motor speed, and as the motor speed increases, the ability of the entire combustion chamber to treat waste gas will also increase, and the waste gas will be thoroughly treated. Conversely, when the amount of waste gas is small, under the action of the first spring and the damper, the weaker the contact degree of the control block and the control button, the smaller the speed, and the power consumption is reduced, which is conducive to energy saving and emission reduction. In summary, the ability of the combustion chamber to treat waste gas can be flexibly controlled through the control box, which not only saves manpower and cost, but also saves power consumption, which is conducive to energy saving and emission reduction.

[0024] During the rotation of the rotating shaft, the coaxial eccentric wheel can be driven to rotate, which can extrude the rolling connected sealing slider. When the long shaft extrudes the sealing slider, the sealing slider can extrude the second spring along the length direction of the sealing slider under the limiting action of the second limiting block, and move to the second gas pipe direction until it enters the second gas pipe for sealing. At this time, the organic waste gas in the combustion chamber cannot flow out. With the rotation of the rotating shaft, the long shaft slowly slides away from the sealing slider. Under the action of the second spring, the sealing slider can return to the initial position. At this time, the second gas pipe is unobstructed, and the organic waste gas in the combustion chamber can flow out through the second gas pipe. In summary, the device can make the organic waste gas in the combustion chamber enter the adsorption chamber in stages for treatment, and will not cause the adsorption chamber to have too much pressure due to the large amount of organic waste gas flowing into the adsorption chamber, thereby reducing the treatment effect. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art based on these drawings.

[0026] Figure 1 The structural schematic diagram of the present application;

[0027] Figure 2 The structural schematic diagram of the control box of the present application;

[0028] Figure 3 The structural schematic diagram of the intermittent exhaust device of the present application;

[0029] Figure 4 The mass transfer degradation model diagram of the biological method for purifying waste gas of the present application;

[0030] Figure 5 Flow chart of the present application.

[0031] Reference signs:

[0032] 1, body; 11, air inlet pipe; 12, first air conveying pipe; 13, second air conveying pipe; 14, first air injection head; 15, third air conveying pipe; 16, fan; 17, fourth air conveying pipe; 18, second air injection head; 19, air outlet pipe; 2, absorption chamber; 21, absorption elbow; 22, absorption liquid; 3, combustion chamber; 31, motor; 32, rotating shaft; 33, heat-resistant blade; 34, filter screen; 35, combustor; 36, oxygen pipe; 37, combustion nozzle; 4, adsorption chamber; 41, adsorption plate; 42, activated carbon layer; 5, biological treatment chamber; 6, electrolysis chamber; 61, inner pipe; 62, outer pipe; 7, control box; 71, box body; 72, detection rod; 721, inclined surface; 722, first limiting block; 723, rack; 73, gear; 74, rotating disc; 75, driving rod; 76, sliding block; 761, groove; 762, control block; 763, sliding groove; 77, first spring; 78, damper; 79, controller; 791, control button; 8, intermittent exhaust device; 81, shell; 82, eccentric wheel; 83, sealing sliding block; 84, second limiting block; 85, second spring. DETAILED DESCRIPTION

[0033] In order to make the technical personnel in the art better understand the technical solutions of the present application, the present application will be further described in detail below in combination with the drawings.

[0034] The present application provides a method for treating wastewater as Figures 1-5The illustrated waste gas treatment device for organic polluted soil remediation includes a main body 1. The main body 1 contains an absorption chamber 2, a combustion chamber 3, an adsorption chamber 4, a biological treatment chamber 5, and an electrolysis chamber 6. The absorption chamber 2 is connected to an inlet pipe 11. The combustion chamber 3 is connected to the absorption chamber 2 via a first gas supply pipe 12. The adsorption chamber 4 is connected to the combustion chamber 3 via a second gas supply pipe 13. The biological treatment chamber 5 is connected to the adsorption chamber 4 via a third gas supply pipe 15. The electrolysis chamber 6 is connected to the biological treatment chamber 5 via a fourth gas supply pipe 17. The absorption chamber 2 is used to absorb water-soluble organic waste gas, and the combustion chamber 3 is used to treat organic waste gas under high-temperature conditions. The organic waste gas undergoes oxidation and pyrolysis. Adsorption chamber 4 is used to adsorb and concentrate the organic waste gas. Biological treatment chamber 5 decomposes the organic waste gas through microorganisms. Electrolysis chamber 6 is used to ionize the organic waste gas. The gas treated in electrolysis chamber 6 is discharged through exhaust pipe 19. First, the organic waste gas enters absorption chamber 2 through inlet pipe 11, then enters combustion chamber 3 through first gas supply pipe 12, then enters adsorption chamber 4 through second gas supply pipe 13, then enters biological treatment chamber 5 through third gas supply pipe 15, and finally enters electrolysis chamber 6 through fourth gas supply pipe 17. After treatment, it is discharged through exhaust pipe 19.

[0035] like Figures 1-5 As shown, the absorption chamber 2 is equipped with an absorption bend 21 that is connected to the air inlet pipe 11. The absorption chamber 2 is also equipped with an absorbent liquid 22 that is submerged in the absorption bend 21. After the organic waste gas flows into the absorption chamber 2 through the air inlet pipe 11, it will flow in the absorption bend 21. During the flow, it will come into full contact with the absorbent liquid 22. The water-soluble waste gas in the organic waste gas will be absorbed by the absorbent liquid 22. Then the remaining organic waste gas will be introduced into the combustion chamber 3 through the first air supply pipe 12.

[0036] like Figures 1-5 As shown, the rotating device includes a motor 31 mounted on the outer wall of the combustion chamber 3, a rotating shaft 32 fixedly connected to the output end of the motor 31, two sets of symmetrical heat-resistant blades 33 mounted on the rotating shaft 32, and a filter screen 34 mounted on the heat-resistant blades 33. The motor 31 is electrically connected to the controller 79. The rotating shaft 32 passes through the outer wall of the combustion chamber 3 via bearings. After the organic waste gas absorbed by the absorption chamber 2 enters the combustion chamber 3 through the first gas supply pipe 12, the heat-resistant blades 33, which rotate with the motor 31, can cause the organic waste gas to turbulently flow and circulate back and forth in the combustion chamber 3, so that it is fully burned. Moreover, the filter screen 34 can not only conduct organic waste gas but also absorb solid impurities generated during the combustion of organic waste.

[0037] like Figures 1-5As shown, the combustion chamber 3 is provided with a rotating device capable of stirring the organic exhaust gas, and further comprises a control box 7 capable of controlling the rotating speed of the rotating device, the control box 7 comprising a box body 71, a detection rod 72 penetrating through the first gas conveying pipe 12 and the box body 71, a rack 723 arranged on the detection rod 72, a gear 73 meshingly connected with the rack 723, a rotating disc 74 coaxially rotating with the gear 73, a driving rod 75 arranged on the rotating disc 74, a sliding block 76 arranged on the upper side of the rotating disc 74, a controller 79 arranged on the body 1, the box body 71 being assembled and connected to the body 1, the detection rod 72 being provided with a first limiting block 722 located between the first gas conveying pipe 12 and the box body 71, the detection rod 72 being provided with an inclined surface 721 at the end of the first gas conveying pipe 12, the gear 73 and the rotating disc 74 being rotationally connected to the box body 71, the sliding block 76 being provided with a recess 761 accommodating the driving rod 75, the driving rod 75 intermittently driving the sliding block 76 to slide through the recess 761, the upper end of the sliding block 76 being provided with a control block 762 penetrating through the body 1, the body 1 being provided with a sliding groove 763 allowing the control block 762 to slide, the controller 79 being provided with a control button 791 allowing the control block 762 to push, the sliding block 76 and the box body 71 being provided with a first spring 77 and a damper 78, the first spring 77 being arranged outside the damper 78.

[0038] Through the above technical scheme, when the organic exhaust gas treated by the absorption chamber 2 passes through the first gas conveying pipe 12, the organic exhaust gas can drive the detection rod 72 to move into the inner cavity of the box body 71 due to the fact that the detection rod 72 is provided with the inclined surface 721 at the part of the first gas conveying pipe 12, the detection rod 72 drives the rack 723 to move in the moving process, the rack 723 drives the gear 73 meshingly connected therewith to rotate, the gear 73 drives the rotating disc 74 coaxially rotating to rotate, the rotating disc 74 drives the driving rod 75 to rotate, the driving rod 75 can drive the sliding block 76 to slide by overcoming the restoring force of the first spring 77 and the damper 78 through the recess 761, in this process, the sliding block 76 drives the control block 762 to move towards the controller 79, when the control block 762 contacts the control button 791, the motor 31 can be started; when the exhaust gas content is too much, the deeper the contact degree of the control block 762 and the control button 791, the greater the rotating speed of the motor 31, with the increase of the rotating speed of the motor 31, the capacity of the combustion chamber 3 to treat the exhaust gas also increases, so that the exhaust gas can be thoroughly treated; on the contrary, when the amount of the exhaust gas is small, the weaker the contact degree of the control block 762 and the control button 791 under the action of the first spring 77 and the damper 78, the smaller the rotating speed, so that the power consumption is reduced, which is conducive to energy saving and emission reduction; in summary, the capacity of the combustion chamber 3 to treat the exhaust gas can be flexibly regulated and controlled through the control box 7, which not only is safe, fast and saves labor cost, but also saves power consumption, which is conducive to energy saving and emission reduction.

[0039] As Figures 1-5As shown, the bottom of the combustion chamber 3 is provided with a burner 35, the burner 35 is provided with a combustion nozzle 37, the combustion nozzle 37 is in communication with the fuel and is symmetrically arranged on both sides of the burner 35, the two combustion nozzles 37 are provided with an oxygen pipe 36 penetrating the burner 35, the oxygen pipe 36 is connected with an oxygen pump, the burner 35 is arranged at the bottom, which is not only safe and convenient but also can fully burn the waste gas, the oxygen pipe 36 is arranged between the combustion nozzles 37, which can provide sufficient oxygen for combustion, and is beneficial to the complete thermal decomposition of the organic waste gas.

[0040] As shown in the figure, Figures 1-5 As shown, the combustion chamber 3 is provided with an intermittent exhaust device 8 penetrating the rotating shaft 32, the intermittent exhaust device 8 includes an outer shell 81 fixedly connected with the combustion chamber 3, an eccentric wheel 82 sleeved on the rotating shaft 32, a sealing sliding block 83 for plugging the second gas pipe 13 in rolling connection with the eccentric wheel 82, the sealing sliding block 83 penetrates the outer shell 81 and extends out of the inner cavity of the outer shell 81, the sealing sliding block 83 is provided with a second limiting block 84 in sliding connection with the side wall of the outer shell 81, and the second limiting block 84 is provided with a second spring 85 between the side wall of the outer shell 81.

[0041] Through the above technical scheme, in the rotating process of the rotating shaft 32, the coaxial eccentric wheel 82 can be driven to rotate, the rotation of the eccentric wheel 82 can extrude the rolling connected sealing sliding block 83, when the long shaft extrudes the sealing sliding block 83, the sealing sliding block 83 can extrude the second spring 85 along the length direction of itself and move to the second gas pipe 13 under the limiting action of the second limiting block 84, until it enters the second gas pipe 13 to seal, at this time the organic waste gas in the combustion chamber 3 cannot flow out, with the rotation of the rotating shaft 32, the long shaft slowly slides away from the sealing sliding block 83, under the action of the second spring 85, the sealing sliding block 83 can return to the initial position, at this time the second gas pipe 13 is unobstructed, and the organic waste gas in the combustion chamber 3 can flow out through the second gas pipe 13, in summary, the device can make the organic waste gas in the combustion chamber 3 enter the adsorption chamber 4 in stages, and be treated in stages, which will not cause the treatment pressure of the adsorption chamber 4 to be too large and weaken the treatment effect because of the large amount of organic waste gas flowing into the adsorption chamber 4.

[0042] As shown in the figure, Figures 1-5 As shown, the second gas pipe 13 located in part of the adsorption chamber 4 is provided with a plurality of first jet heads 14, the adsorption chamber 4 is provided with a plurality of adsorption plates 41 parallel to the first jet heads 14, the adsorption plates 41 are arranged on the inner wall of the adsorption chamber 4 and are provided with an activated carbon layer 42 for adsorbing organic waste gas, the third gas pipe 15 located in part of the adsorption chamber 4 is provided with a fan 16, the fan 16 is used for guiding the organic waste gas, the activated carbon layer 42 can filter the organic waste gas multiple times, and utilize the intermolecular force to adsorb the harmful gas in the air into the pores of itself, because the specific surface area of the activated carbon adsorbent is large, the adsorption rate is high; the fan 16 is beneficial to guiding the organic waste gas into the biological treatment chamber 5.

[0043] As Figures 1-5 shown, the biological treatment chamber 5 is provided with a plurality of biofilm layers attached with microorganisms, and corresponding gas film and liquid film, the biological treatment principle is to decompose organic waste gas into simple inorganic matter by microorganisms, under the environmental conditions created in the biological treatment chamber 5, the microorganisms on the biofilm layer use the organic compounds in the organic waste gas to convert them into necessary energy to maintain life, at the same time, decompose organic matter and convert it from small molecules into non-toxic and harmless substances, and purify the organic waste gas.

[0044] As Figures 1-5 shown, the fourth gas pipe 17 is used to guide the organic waste gas decomposed by the biological treatment chamber 5 into the electrolysis chamber 6, and the part of the electrolysis chamber 6 is provided with a plurality of second gas injection heads 18, and a plurality of electrolysis pipes are fixedly connected to the side wall of the electrolysis chamber 6, the electrolysis pipes include an inner pipe 61 and an outer pipe 62, both of which are metal pipes and are connected to the two poles of the high-voltage power supply box respectively, the inner pipe 61 is uniformly distributed with a plurality of small holes, and the outer pipe 62 is a photocatalytic outer pipe, the electrolysis pipes are connected by pipelines, since the two poles of the high-voltage power supply box are connected to the inner pipe 61 and the outer pipe 62 respectively, a voltage is generated between the inner pipe 61 and the outer pipe 62, when the organic waste gas enters the electrolysis pipe through the second gas injection head 18, the waste gas will be broken down, a large number of energy-carrying electrons will bombard the molecules in the organic waste gas to ionize, dissociate and excite them, then cause physical and chemical reactions, and convert the large-molecule organic waste gas into small-molecule safe substances, and the treated gas is discharged through the exhaust pipe 19.

[0045] An organic contaminated soil remediation waste gas treatment method, comprising the following method steps:

[0046] S1, the organic waste gas enters the absorption chamber 2 through the gas inlet pipe 11 and is absorbed by the absorption chamber 2;

[0047] S2, the organic waste gas enters the combustion chamber 3 through the first gas pipe 12 and is oxidized and pyrolyzed under high temperature environment;

[0048] S3, the organic waste gas enters the adsorption chamber 4 through the second gas pipe 13, and the activated carbon layer 42 adsorbs and concentrates the organic waste gas;

[0049] S4, the organic waste gas enters the biological treatment chamber 5 through the third gas pipe 15 and is decomposed by microorganisms;

[0050] S5, the organic waste gas enters the electrolysis chamber 6 through the fourth gas pipe 17 and is ionized by the electrolysis chamber, and then discharged through the exhaust pipe 19.

[0051] The above method can be simply summarized as "absorption chamber absorption-combustion chamber high-temperature oxidative decomposition-adsorption chamber adsorption-biological treatment chamber decomposition treatment-electrolysis chamber ionization treatment", the above steps are a combined organic whole, and only incineration or activated carbon adsorption of organic waste gas can also treat the organic waste gas, but the treatment effect is far from the technical solution.

[0052] Working principle: first, the organic waste gas enters the absorption chamber 2 through the inlet pipe 11 and is absorbed by the absorption liquid 22; the organic waste gas enters the combustion chamber 3 through the first gas pipe 12, when flowing through the first gas pipe 12, the organic waste gas drives the detection rod 72 to move into the cavity of the box 71, then drives the rack 723 to move, the rack 723 drives the gear 73 to rotate, the gear 73 drives the driving rod 75 to rotate through the rotating disc 74, the driving rod 75 drives the sliding block 76 to slide through the groove 761, the sliding block 76 drives the control block 762 to control the control button 791, then starts the motor 31, the motor 31 drives the heat-resistant blade 33 to rotate through the rotating shaft 32, accelerates the combustion of the organic waste gas; then the organic waste gas enters the adsorption chamber 4 through the second gas pipe 13, the activated carbon layer 42 can filter the organic waste gas multiple times; then enters the biological treatment chamber 5 through the third gas pipe 15, the microorganisms on the biological membrane layer convert the organic compounds in the organic waste gas; then enters the electrolysis chamber 6 through the fourth gas pipe 17, the electrolysis tube breaks the organic waste gas, so that the organic waste gas is ionized; finally, it is discharged through the exhaust pipe 19.

[0053] The above only describes some exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and descriptions are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. An off-gas treatment plant for the remediation of organically contaminated soils, comprising a body (1), characterized in that: The body (1) is provided with an absorption chamber (2), a combustion chamber (3), an adsorption chamber (4), a biological treatment chamber (5) and an electrolysis chamber (6), the absorption chamber (2) is connected with an air inlet pipe (11), the combustion chamber (3) is through connection with the absorption chamber (2) through a first gas conveying pipe (12), the adsorption chamber (4) is through connection with the combustion chamber (3) through a second gas conveying pipe (13), the biological treatment chamber (5) is through connection with the adsorption chamber (4) through a third gas conveying pipe (15), and the electrolysis chamber (6) is through connection with the biological treatment chamber (5) through a fourth gas conveying pipe (17). The absorption chamber (2) is used for absorbing organic waste gas which is easily soluble in water, the combustion chamber (3) is used for oxidizing and pyrolyzing the organic waste gas in a high temperature environment, the adsorption chamber (4) is used for adsorbing and concentrating the organic waste gas, the biological treatment chamber (5) is used for decomposing the organic waste gas through microorganisms, and the electrolysis chamber (6) is used for ionizing the organic waste gas, and the gas treated through the electrolysis chamber (6) is discharged through an air outlet pipe (19). The combustion chamber (3) is provided with rotating devices capable of stirring the organic waste gas, and further comprises a control box (7) capable of controlling the rotating speed of the rotating devices, the control box (7) comprises a box body (71), a detection rod (72) penetrating through the first gas conveying pipe (12) and the box body (71), a rack (723) arranged on the detection rod (72), a gear (73) in meshing connection with the rack (723), a rotating disc (74) rotating coaxially with the gear (73), a driving rod (75) arranged on the rotating disc (74), a sliding block (76) arranged on the upper side of the rotating disc (74), and a controller (79) arranged on the body (1).

2. The off gas treatment apparatus for remediation of organic contaminated soil according to claim 1, characterized by: The box body (71) is assembled and connected on the body (1), the detection rod (72) is provided with a first limiting block (722) between the first gas conveying pipe (12) and the box body (71), the detection rod (72) is provided with an inclined surface (721) at the end of the first gas conveying pipe (12), the gear (73) and the rotating disc (74) are rotationally connected on the box body (71), the sliding block (76) is provided with a groove (761) accommodating the driving rod (75), the driving rod (75) intermittently drives the sliding block (76) to slide through the groove (761), the upper end of the sliding block (76) is provided with a control block (762) penetrating through the body (1), the body (1) is provided with a sliding groove (763) for the sliding of the control block (762), the controller (79) is provided with a control button (791) for the pushing of the control block (762), and the first spring (77) and a damper (78) are arranged between the sliding block (76) and the box body (71), and the first spring (77) is arranged outside the damper (78).

3. The off gas treatment apparatus for remediation of organic contaminated soil according to claim 2, characterized by: The rotating device comprises a motor (31) arranged on the outer wall of the combustion chamber (3), a rotating shaft (32) fixedly connected with the output end of the motor (31), two symmetrical groups of heat-resistant blades (33) arranged on the rotating shaft (32), a filter screen (34) arranged on the heat-resistant blades (33), the motor (31) is electrically connected with the controller (79), and the rotating shaft (32) is arranged on the outer wall of the combustion chamber (3) through a bearing.

4. The off gas treatment apparatus for remediation of organic contaminated soil according to claim 2, characterized by: The combustion chamber (3) is provided with a burner (35) at the bottom, the burner (35) is provided with a combustion nozzle (37), the combustion nozzle (37) is in communication with fuel and is symmetrically arranged on both sides of the burner (35), an oxygen pipe (36) is arranged between the two combustion nozzles (37) and penetrates the burner (35), and the oxygen pipe (36) is connected with an oxygen pump.

5. The off gas treatment apparatus for remediation of organic contaminated soil according to claim 3, characterized by: The combustion chamber (3) is provided with an intermittent exhaust device (8) penetrating the rotating shaft (32), the intermittent exhaust device (8) comprises an outer shell (81) fixedly connected with the combustion chamber (3), an eccentric wheel (82) sleeved on the rotating shaft (32), a sealing sliding block (83) used for plugging the second gas pipe (13) and rolling connected with the eccentric wheel (82), the sealing sliding block (83) penetrates the outer shell (81) and extends into the inner cavity of the outer shell (81), the sealing sliding block (83) is provided with a second limiting block (84) slidingly connected with the side wall of the outer shell (81), and the second limiting block (84) and the side wall of the outer shell (81) are provided with a second spring (85).

6. The off gas treatment apparatus for remediation of organic contaminated soil according to claim 1, characterized by: The second gas pipe (13) is provided with a plurality of first jet heads (14), the adsorption chamber (4) is provided with a plurality of adsorption plates (41) parallel to the first jet heads (14), the adsorption plates (41) are arranged on the inner wall of the adsorption chamber (4) and are provided with an activated carbon layer (42) for adsorbing organic waste gas, and the third gas pipe (15) is provided with a fan (16) for guiding organic waste gas.

7. The off gas treatment apparatus for remediation of organic contaminated soil according to claim 1, characterized by: The absorption chamber (2) is provided with an absorption bend (21) in communication with the gas inlet pipe (11), the absorption chamber (2) is provided with an absorption liquid (22) for immersing the absorption bend (21), the biological treatment chamber (5) is provided with a plurality of biofilm layers attached with microorganisms, and the biofilm layers are further provided with corresponding gas films and liquid films.

8. The off gas treatment apparatus for remediation of organic contaminated soil according to claim 1, characterized by: The fourth gas pipe (17) is used for guiding the organic waste gas decomposed by the biological treatment chamber (5) into the electrolysis chamber (6), and a part of the electrolysis chamber (6) is provided with a plurality of second gas injection heads (18). A plurality of electrolysis pipes are fixedly connected to the side wall of the electrolysis chamber (6), and the electrolysis pipes comprise an inner pipe (61) and an outer pipe (62). The inner pipe (61) and the outer pipe (62) are both metal pipes and are connected to two poles of a high-voltage power supply box respectively. The inner pipe (61) is uniformly provided with a plurality of small holes. The outer pipe (62) is a photocatalytic outer pipe. The electrolysis pipes are connected by pipes.

9. A waste gas treatment method for remediation of organic contaminated soil, which is executed using the waste gas treatment apparatus for remediation of organic contaminated soil according to any one of claims 1 to 8, characterized by: The method comprises the following steps: S1, the organic waste gas enters the absorption chamber (2) through the gas inlet pipe (11) and is absorbed by the absorption chamber (2); S2, the organic waste gas enters the combustion chamber (3) through the first gas pipe (12) and is oxidized and pyrolyzed under a high-temperature environment; S3, the organic waste gas enters the adsorption chamber (4) through the second gas pipe (13) and is adsorbed and concentrated by the activated carbon layer; S4, the organic waste gas enters the biological treatment chamber (5) through the third gas pipe (15) and is decomposed by microorganisms; S5, the organic waste gas enters the electrolysis chamber (6) through the fourth gas pipe (17), is ionized by the electrolysis chamber, and is then discharged through the exhaust pipe (19).

Images