System for treating polluted soil based on microorganism coupling normal-temperature desorption technology

Abstract

The invention discloses a system for treating polluted soil based on a microorganism coupling normal-temperature desorption technology. The system comprises a microorganism degradation mechanism and a normal-temperature desorption mechanism which are matched with each other for use, the microbial degradation mechanism comprises a degradation mechanism accommodating shell, the side surface of the degradation mechanism accommodating shell is provided with a plurality of degradation pick-and-place openings which are horizontally communicated with the interior of the degradation mechanism accommodating shell, and a microbial agent reaction bin with an upward opening is slidably connected in the degradation mechanism accommodating shell along the through direction of the degradation pick-and-place openings; the normal-temperature desorption mechanism comprises a desorption mechanism accommodating shell, the side surface of the desorption mechanism accommodating shell is provided with a plurality of desorption absorption and release openings which are horizontally communicated with the interior of the desorption mechanism accommodating shell, and a normal-temperature desorption reaction bin with an upward opening is slidably connected in the desorption mechanism accommodating shell along the through direction of the desorption absorption and release openings; according to the remediation device, a degradation-desorption-recovery integrated process is realized by utilizing physical coupling of a microbial degradation module and a desorption module, and residual pollutants can be efficiently desorbed at normal temperature by combining ultrasonic waves and micro-nano bubbles.

Description

Technical Field

[0001] This invention relates to the field of soil pollution remediation technology, specifically a system for treating polluted soil based on microbial coupling ambient temperature desorption technology. Background Technology

[0002] The degradation efficiency of existing microbial remediation technologies for organic pollutants is limited by the activity of microorganisms and the secondary accumulation of intermediate products. Some recalcitrant intermediate products (such as long-chain alkanes and benzene compounds) are easily adsorbed on the surface of soil particles, leading to incomplete remediation. Although traditional room-temperature desorption technologies can desorb residual pollutants, pollutants volatilize slowly at room temperature, leaving residues and resulting in incomplete remediation of some pollutants.

[0003] Current shortcomings include the difficulty in completely removing residual intermediate products after microbial degradation, high-temperature desorption with high energy consumption and loss of soil ecological function, and lack of equipment design for degradation-desorption linkage. Summary of the Invention

[0004] The purpose of this invention is to provide a system for treating contaminated soil based on microbial coupling room temperature desorption technology. This remediation device has low energy consumption and no secondary pollution, and can more thoroughly remove pollutants and their decomposition products while protecting the ecological function of the soil.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A system for treating contaminated soil based on microbial coupled ambient temperature desorption technology includes a microbial degradation mechanism and an ambient temperature desorption mechanism used in conjunction with each other.

[0007] The microbial degradation mechanism includes a degradation mechanism housing shell, which has multiple horizontally penetrating degradation and release openings connected to its interior on its side. A bacterial agent reaction chamber with its opening facing upward is slidably connected in the degradation mechanism housing shell along the penetrating direction of the degradation and release openings.

[0008] The degradation mechanism contains multiple horizontally extending oxygen delivery pipes near the bottom of the housing. Several vertically extending short oxygen exhaust pipes are fixed to the upper side of the oxygen delivery pipes, and oxygen nozzles are fixed to the top of the short oxygen exhaust pipes.

[0009] The degradation mechanism contains multiple exhaust pipes for degrading waste gas that are connected to its interior, fixed on the outside of the housing.

[0010] The top of the degradation mechanism housing is fixed with multiple horizontally extending degradation waste gas collection shells. The bottom of the degradation waste gas collection shells has multiple degradation waste gas collection through holes that are connected to the interior. The side of the degradation waste gas collection shells is fixed with degradation waste gas exhaust pipes that are connected to the interior. The degradation waste gas exhaust pipes extend to the outside of the degradation mechanism housing.

[0011] The room temperature desorption mechanism includes a desorption mechanism housing shell, the side of which has multiple horizontally penetrating desorption and release openings that are connected to its interior, and a room temperature desorption reaction chamber with its opening facing upward is slidably connected in the desorption mechanism housing shell along the penetrating direction of the desorption and release openings.

[0012] Multiple ozone delivery pipes are fixed at the bottom of the room temperature desorption reaction chamber. An ozone exhaust sphere is connected to the upper side of the ozone delivery pipes through an ozone connecting short pipe. Multiple ozone exhaust short pipes connected to the ozone exhaust sphere are fixed to the outside of the ozone exhaust sphere. Multiple micro-nano bubble nozzles connected to the ozone exhaust short pipes are fixed on the ozone exhaust short pipes.

[0013] The top of the desorption mechanism housing shell is fixed with a nanobubble generating system, and the output end of the nanobubble generating system is connected to each ozone delivery pipe through the main ozone delivery pipe.

[0014] Multiple ultrasonic transducers are fixed at the bottom of the room temperature desorption reaction chamber;

[0015] The desorption mechanism contains multiple exhaust pipes for desorption waste gas that are connected to its interior, fixed on the outside of the housing.

[0016] Preferably, multiple degradation and loading / unloading openings are arranged vertically on the side of the degradation mechanism's housing shell;

[0017] The bottom of the microbial agent reaction chamber has multiple vertically penetrating aeration holes;

[0018] The first sealing plate is fixed at one end of the bacterial agent reaction chamber at the degradation and release opening. The first sealing plate is sealed to the outer wall of the degradation mechanism housing by a sealing strip.

[0019] The top of the degradation mechanism housing is fixed with multiple horizontally extending degradation waste gas collection shells. The bottom of the degradation waste gas collection shells has multiple degradation waste gas collection through holes that are connected to their interiors. Multiple degradation waste gas exhaust pipes are located at one end inside the degradation mechanism housing and are connected to each degradation waste gas collection shell.

[0020] Multiple desorption and release openings are arranged vertically on the side of the housing of the desorption mechanism;

[0021] A second sealing plate is fixed at one end of the room temperature desorption reaction chamber at the desorption and discharge opening. The second sealing plate is sealed to the outer wall of the desorption mechanism housing by a sealing strip.

[0022] The top of the desorption mechanism housing is fixed with multiple horizontally extending desorption waste gas collection shells. The bottom of the desorption waste gas collection shells has multiple desorption waste gas collection through holes that are connected to their interiors. Multiple desorption waste gas exhaust pipes are located at one end inside the desorption mechanism housing and are connected to each desorption waste gas collection shell.

[0023] Preferably, the inner wall of the degradation mechanism housing is connected to the bacterial agent reaction chamber via a first slide rail mechanism. The first slide rail mechanism includes a first support shaft fixed on the inner wall of the degradation mechanism housing. Multiple first support shafts are arranged in a horizontal direction. First support rollers are rotatably connected to the first support shafts. A horizontally extending first support beam is fixed on the side of the bacterial agent reaction chamber. The lower side of the first support beam is rolled and supported on the top of multiple first support rollers.

[0024] The arrangement direction of the multiple first support shafts is parallel to the through direction of the degradation and pick-up opening, the rotation axis of the first support roller is perpendicular to the through direction of the degradation and pick-up opening, and the extension direction of the first support beam is parallel to the through direction of the degradation and pick-up opening.

[0025] Each of the two opposing sides of the bacterial agent reaction chamber is fixed with a first support beam.

[0026] Instructions: Manually pulling or pushing the bacterial agent reaction chamber along the through direction of the degradation inlet / outlet can remove the bacterial agent reaction chamber from the degradation mechanism housing, or insert the bacterial agent reaction chamber into the degradation mechanism housing.

[0027] Preferably, the degradation mechanism housing is provided with a humidity regulating mechanism, which includes multiple humidity regulating water supply pipes fixed to the inner side wall of the degradation mechanism housing and arranged horizontally. Multiple atomizing nozzles connected to the inside of the humidity regulating water supply pipes are fixed on the side of the humidity regulating water supply pipes near the bacterial agent reaction chamber.

[0028] Each humidity-regulating water supply pipe has a water mist migration drive housing fixed above and below it. Multiple water mist migration airflow nozzles that are connected to the inside of the water mist migration drive housing and are arranged horizontally are fixed on the side of the water mist migration drive housing.

[0029] Explanation: Water is introduced into the humidity-regulating water supply pipe using a delivery pump based on existing technology. The delivery pump intermittently pressurizes the water, causing it to be intermittently sprayed out of the atomizing nozzles to form water mist. An air conveyor based on existing technology intermittently ventilates the water mist migration drive housing, causing horizontal airflow to be intermittently ejected from each water mist migration airflow nozzle. The horizontal airflow promotes the migration of water mist to the top of the bacterial agent reaction chamber, where it is evenly distributed inside the bacterial agent reaction chamber under the action of gravity.

[0030] Preferably, a first waste liquid collection shell is fixed at the bottom of the enclosure of the degradation mechanism, the top of the first waste liquid collection shell has a plurality of concave first waste liquid collection pits, the bottom of the first waste liquid collection pits has a first waste liquid collection hole that communicates with the inside of the first waste liquid collection shell, and a first waste liquid discharge pipe that communicates with the inside of the first waste liquid collection shell is fixed at the bottom of the first waste liquid collection shell, and the first waste liquid discharge pipe extends to the outside of the enclosure of the degradation mechanism.

[0031] Explanation: Leachate will drip down from the bacterial agent reaction chamber. This leachate drips onto the top of the first waste liquid collection shell, flows into the first waste liquid collection pit, and then enters the first waste liquid collection shell through the first waste liquid collection hole. The leachate collected inside the first waste liquid collection shell is finally discharged from the first waste liquid discharge pipe.

[0032] Preferably, the outer side of the degradation mechanism housing is provided with a heat insulation mechanism, which includes a heat insulation shell that is tightly fixed to the outer side of the degradation mechanism housing. The heat insulation shell has a hollow structure inside, and an electric heating plate is fixed inside the heat insulation shell on the side near the degradation mechanism housing.

[0033] Note: The interior of each thermal insulation shell is in a vacuum state, which is conducive to thermal insulation. The side of the shell closest to the degradation mechanism is heated by electric heating plate, and the interior of the degradation mechanism shell is heated by thermal radiation, so that the internal temperature of the degradation mechanism shell is maintained at 25-35℃.

[0034] Preferably, the microbial agent reaction chamber is provided with a pore adjustment mechanism, which includes a pore adjustment mating plate that is slidably connected to the bottom of the microbial agent reaction chamber in a horizontal direction, and the pore adjustment mating plate has a plurality of vertically penetrating pore mating holes;

[0035] An open-end pore adjustment fixing cylinder is fixed on the inner wall of the bacterial agent reaction chamber. The axis of the pore adjustment fixing cylinder is parallel to the sliding direction of the pore adjustment mating plate. An pore adjustment sliding cylinder is slidably connected to the outer side of the pore adjustment fixing cylinder. The pore adjustment sliding cylinder is fixedly connected to the pore adjustment mating plate.

[0036] The pore adjustment fixed cylinder is equipped with a pore adjustment drive rod for driving the pore adjustment sliding cylinder to move. The pore adjustment drive rod is an existing electrically controlled telescopic rod driven by a servo motor. The outer end of the pore adjustment drive rod is fixedly connected to the pore adjustment fixed cylinder, and the inner end of the pore adjustment drive rod is fixedly connected to the pore adjustment sliding cylinder.

[0037] Explanation: The pore-fitting holes and aeration through holes together form an aeration channel in the vertical direction. Adjusting the overlap area between the pore-fitting holes and the aeration through holes can regulate the flow rate of the aeration channel.

[0038] Preferably, the desorption mechanism housing has an internally and externally penetrating insertion hole on its side, and the open end of the ozone delivery pipe is inserted into the insertion hole.

[0039] The insertion hole is located at the end furthest from the extraction and release opening;

[0040] The ozone delivery main pipeline is connected to an ozone delivery connector at the end away from the nanobubble generation system. The ozone delivery connector is fixed on the side wall of the desorption mechanism housing shell. The ozone delivery connector is arranged coaxially with each ozone delivery pipe.

[0041] One end of the ozone delivery connector, which is located inside the housing of the desorption mechanism, is inserted into the open end of the ozone delivery pipe. A sealing ring is fixed on the part of the ozone delivery connector that is inserted into the ozone delivery pipe.

[0042] Note: The ozone delivery connector is plugged into the open end of the ozone delivery pipe to facilitate the assembly and disassembly of the ambient temperature desorption reaction chamber and to quickly connect the pipeline.

[0043] Preferably, the inner wall of the desorption mechanism housing is connected to the room temperature desorption reaction chamber via a second slide rail mechanism. The second slide rail mechanism includes a second support shaft fixed on the inner wall of the desorption mechanism housing. Multiple second support shafts are arranged in a horizontal direction. Second support rollers are rotatably connected to the second support shafts. A horizontally extending second support beam is fixed on the side of the room temperature desorption reaction chamber. The lower side of the second support beam is rolled and supported on the top of multiple second support rollers.

[0044] The arrangement direction of the multiple second support shafts is parallel to the through direction of the desorption and release opening, the rotation axis of the second support roller is perpendicular to the through direction of the desorption and release opening, and the extension direction of the second support beam is parallel to the through direction of the desorption and release opening.

[0045] Each of the two opposing sides of the ambient temperature desorption reaction chamber is fixed with a second support beam.

[0046] Below each second support roller is a lateral support seat fixedly connected to the inner wall of the desorption mechanism housing. A lateral support roller is rotatably connected to the lateral support seat. The rotation axis of the lateral support roller is in the vertical direction. The lateral support roller presses against the side of the ambient temperature desorption reaction chamber with the second support beam.

[0047] Note: Manually pulling or pushing the room temperature desorption reaction chamber along the through direction of the desorption / release opening can remove the room temperature desorption reaction chamber from the desorption mechanism housing, or insert the room temperature desorption reaction chamber into the desorption mechanism housing.

[0048] Preferably, a second waste liquid collection shell is fixed at the bottom of the desorption mechanism housing, the top of the second waste liquid collection shell has multiple concave second waste liquid collection pits, the bottom of the second waste liquid collection pits has a second waste liquid collection hole that communicates with the inside of the second waste liquid collection shell, and a second waste liquid discharge pipe that communicates with the inside of the second waste liquid collection shell is fixed at the bottom of the second waste liquid collection shell, and the second waste liquid discharge pipe extends to the outside of the desorption mechanism housing.

[0049] Note: At room temperature, leachate will drip down into the desorption reaction chamber. This leachate drips onto the top of the second waste liquid collection shell, flows into the second waste liquid collection pit, and then enters the second waste liquid collection shell through the second waste liquid collection hole. The leachate collected inside the second waste liquid collection shell is finally discharged from the second waste liquid discharge pipe.

[0050] Compared with the prior art, the beneficial effects of the present invention are reflected in the following aspects:

[0051] 1. The present invention has a reasonable structural design, with physical coupling of microbial degradation and desorption modules to realize an integrated process of "degradation-desorption-recovery". The combination of ultrasound and micro-nano bubbles can efficiently desorb residual pollutants at room temperature;

[0052] 2. This invention is easy to operate. The detachable design of the bacterial agent reaction chamber facilitates the replacement of bacterial agents and equipment maintenance. The closed-loop circulation system prevents the leakage of pollutants and meets environmental protection requirements.

[0053] 3. This invention adopts a combination of microbial degradation and room-temperature desorption decomposition products. The two remediation mechanisms work together to more comprehensively treat pollutants in the soil and improve the remediation effect. Compared with traditional single microbial remediation, the pollutant removal rate is increased by 40%, the energy consumption is reduced by 70% compared with thermal desorption technology, and the soil organic matter retention rate is >80%.

[0054] 4. In the technical solution of the present invention, the outer side of the degradation mechanism housing shell is provided with a heat preservation mechanism, including a heat preservation shell and an electric heating plate, which can adjust the internal temperature and provide a suitable temperature environment for microbial degradation, adapting to different external climate conditions.

[0055] 5. In the pore adjustment mechanism of the present invention, the pore fitting hole and the aeration through hole together form an aeration channel in the vertical direction, and the overlapping area of ​​the pore fitting hole and the aeration through hole is adjusted to adjust the flow rate of the aeration channel. Attached Figure Description

[0056] Figure 1 This is a schematic diagram of the microbial degradation mechanism of the present invention;

[0057] Figure 2 yes Figure 1 The right view;

[0058] Figure 3 This is a right view of the first slide rail mechanism of the present invention;

[0059] Figure 4 This is a right view of the humidity regulating mechanism of the present invention;

[0060] Figure 5 This is a schematic diagram of the orifice adjustment mechanism of the present invention;

[0061] Figure 6 This is a schematic diagram of the room temperature desorption mechanism of the present invention;

[0062] Figure 7 yes Figure 6 The right view;

[0063] Figure 8 This is a schematic diagram of the structure of the ozone exhaust spherical shell of the present invention;

[0064] Figure 9 This is a schematic diagram of the ozone delivery connector of the present invention;

[0065] Figure 10 This is a right view of the second slide rail mechanism of the present invention.

[0066] In the figure, 10-microbial degradation mechanism, 11-degradation mechanism housing shell, 110-degradation loading and unloading opening, 12-microbial agent reaction chamber, 120-aeration through hole, 121-first sealing plate, 13-oxygen delivery pipe, 131-oxygen exhaust short pipe, 132-oxygen nozzle, 14-degradation waste gas collection shell, 141-degradation waste gas collection through hole, 142-degradation waste gas exhaust pipe, 15-first slide rail mechanism, 151-first support shaft, 152-first support roller, 153-first support beam, 1 6-Humidity regulating mechanism; 161-Humidity regulating water supply pipe; 162-Atomizing nozzle; 163-Water mist migration drive housing; 164-Water mist migration airflow nozzle; 17-First waste liquid collection housing; 171-First waste liquid collection pit; 172-First waste liquid collection hole; 173-First waste liquid discharge pipe; 18-Insulation mechanism; 181-Insulation shell; 182-Heating plate; 19-Porosity regulating mechanism; 190-Porosity mating hole; 191-Porosity regulating mating plate; 192-Porosity regulating fixing cylinder. 193-Porosity adjustment sliding cylinder, 194-Porosity adjustment drive rod, 20-Room temperature desorption mechanism, 201-Ultrasonic vibrating plate, 21-Desorption mechanism housing shell, 210-Desorption and release opening, 211-Interlocking hole, 22-Room temperature desorption reaction chamber, 221-Second sealing plate, 23-Ozone delivery pipe, 231-Ozone connecting short pipe, 232-Ozone exhaust spherical shell, 233-Ozone exhaust short pipe, 234-Micro / nano bubble nozzle, 24-Nano bubble generation system, 241-Ozone delivery main unit Pipeline, 242-Ozone delivery connector, 2420-Connecting sealing ring, 25-Desorption waste gas collection shell, 251-Desorption waste gas collection through hole, 252-Desorption waste gas exhaust pipe, 26-Second slide rail mechanism, 261-Second support shaft, 262-Second support roller, 263-Second support beam, 264-Side support seat, 265-Side support roller, 27-Second waste liquid collection shell, 271-Second waste liquid collection pit, 272-Second waste liquid collection hole, 273-Second waste liquid exhaust pipe. Detailed Implementation

[0067] The following is combined with Figures 1-10 The present invention will be described in detail. For ease of description, the orientations mentioned below are defined as follows: The directions of up, down, left, right, front, and back mentioned below are consistent with the directions of up, down, left, right, front, and back in the projection relationship of the respective main view or structural schematic diagram.

[0068] Example 1:

[0069] A system for treating contaminated soil based on microbial coupled ambient temperature desorption technology, such as Figure 1 , Figure 6 As shown, it includes a microbial degradation mechanism 10 and a room-temperature desorption mechanism 20 that work together.

[0070] like Figure 1 As shown, the microbial degradation mechanism 10 includes a degradation mechanism housing shell 11. The side of the degradation mechanism housing shell 11 has multiple horizontally penetrating degradation and placement openings 110 that are connected to its interior. A bacterial agent reaction chamber 12 with its opening facing upward is slidably connected in the degradation mechanism housing shell 11 along the penetrating direction of the degradation and placement openings 110. The bacterial agent reaction chamber 12 is made of 304 stainless steel plate.

[0071] Multiple degradation and loading openings 110 are arranged vertically on the side of the degradation mechanism housing 11.

[0072] The bottom of the microbial agent reaction chamber 12 has multiple vertically penetrating aeration holes 120;

[0073] The degradation mechanism housing 11 is equipped with multiple monitoring sensors, including existing temperature and humidity sensors.

[0074] A first sealing plate 121 is fixed at one end of the bacterial agent reaction chamber 12 at the degradation and release opening 110. The first sealing plate 121 and the outer wall of the degradation mechanism receiving shell 11 are sealed together by a sealing strip.

[0075] The degradation mechanism housing 11 has multiple horizontally extending oxygen delivery pipes 13 near the bottom. Multiple vertically extending oxygen exhaust pipes 131 are fixed on the upper side of the oxygen delivery pipes 13 and are connected to them. An oxygen nozzle 132 is fixed on the top of the oxygen exhaust pipes 131 and is connected to them.

[0076] like Figure 1 As shown, multiple exhaust pipes 142 for degrading waste gas are fixed on the outside of the shell 11 containing the degradation mechanism and are connected to its interior.

[0077] like Figure 1 As shown, multiple horizontally extending degradation waste gas collection shells 14 are fixed at the top inside the degradation mechanism housing 11, such as... Figure 2As shown, the bottom of the degradation waste gas collection shell 14 has multiple degradation waste gas collection through holes 141 that are connected to its interior, and one end of multiple degradation waste gas exhaust pipes 142 located inside the degradation mechanism housing shell 11 is connected to each degradation waste gas collection shell 14.

[0078] like Figure 2 As shown, the degradation mechanism housing 11 is equipped with a humidity regulating mechanism 16, such as... Figure 4 As shown, the humidity control mechanism 16 includes multiple humidity control water supply pipes 161 that are fixed on the inner wall of the degradation mechanism housing 11 and extend horizontally. Multiple atomizing nozzles 162 that are connected to the inside of the humidity control water supply pipes 161 are fixed on the side of the humidity control water supply pipes 161 near the bacterial agent reaction chamber 12.

[0079] Each humidity regulating water supply pipe 161 has a water mist migration drive housing 163 fixed above and below it. Multiple water mist migration airflow nozzles 164 that are connected to the interior and arranged horizontally are fixed on the side of the water mist migration drive housing 163.

[0080] like Figure 6 As shown, the room temperature desorption mechanism 20 includes a desorption mechanism housing 21. The side of the desorption mechanism housing 21 has multiple horizontally penetrating desorption and release openings 210 that are connected to its interior. A room temperature desorption reaction chamber 22 with its opening facing upward is slidably connected in the desorption mechanism housing 21 along the penetrating direction of the desorption and release openings 210. The room temperature desorption reaction chamber 22 is made of 304 stainless steel plate.

[0081] Multiple desorption and release openings 210 are arranged vertically on the side of the desorption mechanism housing 21.

[0082] A second sealing plate 221 is fixed at one end of the room temperature desorption reaction chamber 22 at the desorption and discharge opening 210. The second sealing plate 221 and the outer wall of the desorption mechanism housing 21 are sealed together by a sealing strip.

[0083] like Figure 6 As shown, multiple ozone delivery pipes 23 are fixed at the bottom of the room temperature desorption reaction chamber 22, such as... Figure 8 As shown, an ozone discharge spherical shell 232 is connected to the upper side of the ozone delivery pipe 23 via an ozone connecting short pipe 231. Multiple ozone discharge short pipes 233 connected to the interior of the ozone discharge spherical shell 232 are fixed on the outside of the ozone discharge spherical shell 232. Multiple micro-nano bubble nozzles 234 connected to the ozone discharge short pipes 233 are fixed on the ozone discharge short pipes 233.

[0084] like Figure 6 As shown, a nanobubble generating system 24 is fixed on the top of the desorption mechanism housing shell 21. The output end of the nanobubble generating system 24 is connected to each ozone delivery pipe 23 through the ozone delivery main pipe 241.

[0085] like Figure 7 As shown, multiple ultrasonic transducers 201 are fixed at the bottom of the room temperature desorption reaction chamber 22;

[0086] like Figure 6 As shown, multiple desorption exhaust pipes 252 connected to the interior are fixed on the outside of the desorption mechanism housing 21.

[0087] like Figure 6 As shown, multiple horizontally extending desorption waste gas collection shells 25 are fixed at the top inside the desorption mechanism housing 21, such as... Figure 7 As shown, the bottom of the desorption waste gas collection shell 25 has multiple desorption waste gas collection through holes 251 that are connected to its interior, and one end of multiple desorption waste gas discharge pipes 252 located inside the desorption mechanism housing 21 is connected to each desorption waste gas collection shell 25.

[0088] like Figure 6 As shown, a plurality of horizontally extending desorption waste gas collection shells 25 are fixed at the top inside the desorption mechanism housing 21. The bottom of the desorption waste gas collection shell 25 has a plurality of desorption waste gas collection through holes 251 that communicate with its interior. A desorption waste gas exhaust pipe 252 that communicates with its interior is fixed on the side of the desorption waste gas collection shell 25 and extends to the outside of the desorption mechanism housing 21.

[0089] Example 2:

[0090] Based on Example 1, such as Figure 2 As shown, the inner wall of the degradation mechanism housing 11 is connected to the bacterial agent reaction chamber 12 via the first slide rail mechanism 15, as... Figure 3 As shown, the first slide rail mechanism 15 includes a first support shaft 151 fixed on the inner wall of the degradation mechanism housing 11. Multiple first support shafts 151 are arranged in a horizontal direction. First support rollers 152 are rotatably connected to the first support shafts 151. A horizontally extending first support beam 153 is fixed on the side of the bacterial agent reaction chamber 12. The lower side of the first support beam 153 is rolled and supported on the top of multiple first support rollers 152.

[0091] The arrangement direction of the multiple first support shafts 151 is parallel to the through direction of the degradation and pick-up opening 110, the rotation axis of the first support roller 152 extends horizontally and is perpendicular to the through direction of the degradation and pick-up opening 110, and the extension direction of the first support beam 153 is parallel to the through direction of the degradation and pick-up opening 110.

[0092] Each of the two opposing sides of the bacterial agent reaction chamber 12 is fixed with a first support beam 153.

[0093] Example 3:

[0094] Based on Example 2, such as Figure 1As shown, a first waste liquid collection shell 17 is fixed at the bottom of the inner shell 11 of the degradation mechanism. The top of the first waste liquid collection shell 17 has a plurality of concave first waste liquid collection pits 171. The bottom of the first waste liquid collection pits 171 has a first waste liquid collection hole 172 that communicates with the inside of the first waste liquid collection shell 17. A first waste liquid discharge pipe 173 that communicates with the inside of the first waste liquid collection shell 17 is fixed at the bottom of the first waste liquid collection shell 17. The first waste liquid discharge pipe 173 extends to the outside of the inner shell 11 of the degradation mechanism.

[0095] Example 4:

[0096] Based on Example 3, such as Figure 1 As shown, a heat preservation mechanism 18 is provided on the outside of the degradation mechanism housing shell 11. The heat preservation mechanism 18 includes a heat preservation shell 181 that is tightly fixed on the outside of the degradation mechanism housing shell 11. The heat preservation shell 181 has a hollow structure inside. An electric heating plate 182 is fixed on the side of the heat preservation shell 181 near the degradation mechanism housing shell 11.

[0097] Example 5:

[0098] Based on Example 4, such as Figure 1 As shown, the bacterial agent reaction chamber 12 is equipped with a pore adjustment mechanism 19, such as... Figure 5 As shown, the pore adjustment mechanism 19 includes a pore adjustment mating plate 191 that is slidably connected to the bottom of the bacterial agent reaction chamber 12 in the horizontal direction. The pore adjustment mating plate 191 has a plurality of vertically penetrating pore mating holes 190.

[0099] An open-end pore adjustment fixing cylinder 192 is fixed on the inner wall of the bacterial agent reaction chamber 12. The axis of the pore adjustment fixing cylinder 192 is parallel to the sliding direction of the pore adjustment mating plate 191. An pore adjustment sliding cylinder 193 is slidably connected to the outer side of the pore adjustment fixing cylinder 192. The pore adjustment sliding cylinder 193 is fixedly connected to the pore adjustment mating plate 191.

[0100] The pore adjustment fixing cylinder 192 is provided with a pore adjustment drive rod 194 for driving the pore adjustment sliding cylinder 193 to move. The pore adjustment drive rod 194 is an existing electrically controlled telescopic rod driven by a servo motor. The outer rod end of the pore adjustment drive rod 194 is fixedly connected to the pore adjustment fixing cylinder 192, and the inner rod end of the pore adjustment drive rod 194 is fixedly connected to the pore adjustment sliding cylinder 193.

[0101] Example 6:

[0102] Based on Example 5, such as Figure 9 As shown, the desorption mechanism housing 21 has an internally and externally penetrating insertion hole 211 on its side, and the open end of the ozone delivery pipe 23 is inserted into the insertion hole 211.

[0103] The insertion hole 211 is located at the end away from the extraction and release opening 210;

[0104] The ozone delivery main pipeline 241 is connected to an ozone delivery connector 242 at the end away from the nanobubble generating system 24. The ozone delivery connector 242 is fixed on the side wall of the desorption mechanism housing 21. The ozone delivery connector 242 is coaxially arranged with each ozone delivery pipe 23.

[0105] One end of the ozone delivery connector 242, which is located inside the desorption mechanism housing 21, is inserted into the open end of the ozone delivery pipe 23. A sealing ring 2420 is fixed on the part of the ozone delivery connector 242 that is inserted into the ozone delivery pipe 23.

[0106] Example 7:

[0107] Based on Example 6, such as Figure 7 As shown, the inner wall of the desorption mechanism housing 21 is connected to the ambient temperature desorption reaction chamber 22 via the second slide rail mechanism 26, as follows: Figure 10 As shown, the second slide rail mechanism 26 includes a second support shaft 261 fixed on the inner wall of the desorption mechanism housing 21. Multiple second support shafts 261 are arranged in a horizontal direction. Second support rollers 262 are rotatably connected to the second support shafts 261. A horizontally extending second support beam 263 is fixed on the side of the room temperature desorption reaction chamber 22. The lower side of the second support beam 263 is rolled and supported on the top of multiple second support rollers 262.

[0108] The arrangement direction of the multiple second support shafts 261 is parallel to the through direction of the desorption and release opening 210, the rotation axis of the second support roller 262 extends horizontally and is perpendicular to the through direction of the desorption and release opening 210, and the extension direction of the second support beam 263 is parallel to the through direction of the desorption and release opening 210.

[0109] Each of the two opposing sides of the ambient temperature desorption reaction chamber 22 is fixed with a second support beam 263;

[0110] Below each second support roller 262 is a lateral support seat 264 fixedly connected to the inner wall of the desorption mechanism housing 21. A lateral support roller 265 is rotatably connected to the lateral support seat 264. The rotation axis of the lateral support roller 265 is in the vertical direction. The lateral support roller 265 presses against the side of the ambient temperature desorption reaction chamber 22 with the second support beam 263.

[0111] Example 8:

[0112] Based on Example 7, such as Figure 6As shown, a second waste liquid collection shell 27 is fixed at the bottom inside the desorption mechanism housing 21. The top of the second waste liquid collection shell 27 has multiple concave second waste liquid collection pits 271. The bottom of the second waste liquid collection pits 271 has a second waste liquid collection hole 272 that communicates with the inside of the second waste liquid collection shell 27. A second waste liquid discharge pipe 273 that communicates with the inside of the second waste liquid collection shell 27 is fixed at the bottom of the second waste liquid collection shell 27. The second waste liquid discharge pipe 273 extends to the outside of the desorption mechanism housing 21.

[0113] In practical application, the present invention first uses a microbial degradation mechanism 10 to treat contaminated soil. The contaminated soil is mixed with microbial agents and then laid in the agent reaction chamber 12. The microbial agents include Pseudomonas, Rhodococcus, and immobilized laccase. Oxygen is introduced into each oxygen delivery pipe 13 using a delivery pump of existing technology. The oxygen enters the oxygen exhaust short pipe 131 and is then sprayed out from the oxygen nozzle 132. The oxygen flows from bottom to top in the degradation mechanism housing shell 11. During the upward flow of oxygen, it passes through the aeration holes 120 and the contaminated soil in the agent reaction chamber 12 in sequence, providing oxygen to the agent in the soil.

[0114] The outer side of the first sealed plate 121 has a handle. The bacterial agent reaction chamber 12 can be manually pulled or pushed along the through direction of the degradation opening 110 to remove the bacterial agent reaction chamber 12 from the degradation mechanism housing 11 or to put the bacterial agent reaction chamber 12 into the degradation mechanism housing 11.

[0115] The waste gas generated during the treatment process of the microbial degradation mechanism 10 is collected at the top of the degradation mechanism housing shell 11. The waste gas enters the interior of the degradation waste gas collection shell 14 through the degradation waste gas collection through hole 141. The waste gas inside the degradation waste gas collection shell 14 is then discharged from the degradation waste gas exhaust pipe 142.

[0116] The humidity is regulated by the humidity regulating mechanism 16. Water is fed into the humidity regulating water supply pipe 161 by a conventional delivery pump. The delivery pump intermittently pressurizes the water in the humidity regulating water supply pipe 161, causing the water in the humidity regulating water supply pipe 161 to be intermittently sprayed out from the atomizing nozzle 162 to form water mist. The conventional air conveyor intermittently ventilates the water mist migration drive shell 163, causing the water mist migration airflow nozzles 164 to intermittently spray out horizontal airflow. The horizontal airflow promotes the migration of water mist to the top of the bacterial agent reaction chamber 12, and under the action of gravity, it is evenly sprinkled inside the bacterial agent reaction chamber 12, so that the humidity in the degradation mechanism housing shell 11 is maintained at 60-80%.

[0117] During the process, leachate will drip down from the bacterial agent reaction chamber 12. This leachate drips onto the top of the first waste liquid collection shell 17. After the leachate flows into the first waste liquid collection pit 171, it enters the interior of the first waste liquid collection shell 17 through the first waste liquid collection hole 172. The leachate collected inside the first waste liquid collection shell 17 is finally discharged from the first waste liquid discharge pipe 173.

[0118] In the heat preservation mechanism 18, the interior of each heat preservation shell 181 is in a vacuum state, which is conducive to heat preservation. The side of the shell 11 near the degradation mechanism is heated by the electric heating plate 182, and the interior of the shell 11 is heated by the thermal radiation, so that the internal temperature of the shell 11 is maintained at 25-35℃.

[0119] In the pore adjustment mechanism 19, the size and relative position of each pore fitting hole 190 are consistent with the aeration through hole 120. The pore fitting hole 190 and the aeration through hole 120 together form an aeration channel in the vertical direction. Adjusting the overlap area between the pore fitting hole 190 and the aeration through hole 120 adjusts the flow rate of the aeration channel. The extension or retraction of the inner rod of the pore adjustment drive rod 194 can drive the pore adjustment sliding cylinder 193 together with the pore adjustment fitting plate 191 to slide in the horizontal direction, thereby adjusting the overlap area between the pore fitting hole 190 and the aeration through hole 120.

[0120] The second sealing plate 221 has a handle on the outside. The room temperature desorption reaction chamber 22 can be manually pulled or pushed along the through direction of the desorption and release opening 210. The room temperature desorption reaction chamber 22 can be taken out from the desorption mechanism housing 21 or put into the desorption mechanism housing 21.

[0121] After the microbial degradation mechanism 10 has finished processing, the bacterial agent reaction chamber 12 is removed from the degradation mechanism housing shell 11, and the contaminated soil is transferred to the ambient temperature desorption reaction chamber 22. The ambient temperature desorption mechanism 20 is used to treat the contaminated soil. The ozone generated by the nanobubble generation system 24 is transported to each ozone delivery pipe 23 through the ozone delivery main pipe 241. The ozone in the ozone delivery pipe 23 enters the ozone exhaust shell 232 through the ozone connecting short pipe 231. The ozone in the ozone exhaust shell 232 enters each ozone exhaust short pipe 233 and is finally sprayed out from the micro-nanobubble nozzle 234. The ozone sprayed out by the micro-nanobubble nozzle 234 mixes into the contaminated soil, enhancing the desorption of pollutants and simultaneously oxidizing and decomposing the products.

[0122] Multiple ultrasonic transducers 201 generate vibrations of 20-40 kHz, which are applied to the contaminated soil in the room temperature desorption reaction chamber 22, which helps to break the pollutant-soil binding bond.

[0123] The waste gas generated during the process of the room temperature desorption mechanism 20 will be collected at the top of the desorption mechanism housing 21. The waste gas enters the desorption waste gas collection housing 25 through the desorption waste gas collection through hole 251. The waste gas inside the desorption waste gas collection housing 25 can then be discharged from the desorption waste gas discharge pipe 252.

[0124] During the process, leachate will drip down from the room temperature desorption reaction chamber 22. This leachate drips onto the top of the second waste liquid collection shell 27. After the leachate flows into the second waste liquid collection pit 271, it enters the interior of the second waste liquid collection shell 27 through the second waste liquid collection hole 272. The leachate collected inside the second waste liquid collection shell 27 is finally discharged from the second waste liquid discharge pipe 273.

[0125] Both the degradation waste gas discharge pipe 142 and the desorption waste gas discharge pipe 252 are connected to activated carbon-molecular sieve composite adsorption towers that are set in series using existing technology, for adsorbing and desorbing volatile products.

[0126] The adsorption tower is then connected to a conventional condensation recovery tank for collecting high-boiling-point organic compounds, such as polycyclic aromatic hydrocarbons.

Claims

1. A system for treating contaminated soil based on microbial coupled ambient temperature desorption technology, characterized in that, It includes a microbial degradation mechanism (10) and a room-temperature desorption mechanism (20) that work together; The microbial degradation mechanism (10) includes a degradation mechanism housing shell (11), the side of which has multiple horizontally penetrating degradation and release openings (110) connected to its interior, and an upward-facing bacterial agent reaction chamber (12) is slidably connected in the degradation mechanism housing shell (11) along the penetrating direction of the degradation and release openings (110). The degradation mechanism housing (11) has multiple horizontally extending oxygen delivery pipes (13) near the bottom. Multiple vertically extending oxygen exhaust pipes (131) are fixed on the upper side of the oxygen delivery pipes (13). An oxygen nozzle (132) is fixed on the top of the oxygen exhaust pipes (131). The degradation mechanism housing (11) has multiple degradation waste gas exhaust pipes (142) fixed on its outer side, which are connected to its interior. The ambient temperature desorption mechanism (20) includes a desorption mechanism housing shell (21), the desorption mechanism housing shell (21) has multiple horizontally penetrating desorption and release openings (210) that are connected to its interior, and an ambient temperature desorption reaction chamber (22) with its opening facing upward is slidably connected in the desorption mechanism housing shell (21) along the penetrating direction of the desorption and release openings (210). The bottom of the room temperature desorption reaction chamber (22) is fixed with multiple ozone delivery pipes (23). The upper side of the ozone delivery pipes (23) is connected to an ozone exhaust spherical shell (232) through an ozone connecting short pipe (231). Multiple ozone exhaust short pipes (233) connected to the ozone exhaust spherical shell (232) are fixed on the outside of the ozone exhaust spherical shell (232). Multiple micro-nano bubble nozzles (234) connected to the ozone exhaust short pipes (233) are fixed on the ozone exhaust short pipes (233). The top of the desorption mechanism housing shell (21) is fixed with a nanobubble generating system (24), and the output end of the nanobubble generating system (24) is connected to each ozone delivery pipe (23) through the ozone delivery main pipe (241). The bottom of the ambient temperature desorption reaction chamber (22) is fixed with multiple ultrasonic transducers (201); The desorption mechanism housing (21) has multiple desorption waste gas discharge pipes (252) fixed on its outer side, which are connected to its interior.

2. The system for treating contaminated soil based on microbial coupling ambient temperature desorption technology according to claim 1, characterized in that, Multiple degradation and loading openings (110) are arranged vertically on the side of the degradation mechanism housing (11); The bottom of the microbial agent reaction chamber (12) has multiple vertically penetrating aeration holes (120); The bacterial agent reaction chamber (12) is fixed with a first sealing plate (121) at one end of the degradation take-up opening (110). The first sealing plate (121) and the outer wall of the degradation mechanism housing (11) are sealed together by a sealing strip. The top of the degradation mechanism housing (11) is fixed with multiple horizontally extending degradation waste gas collection shells (14). The bottom of the degradation waste gas collection shells (14) has multiple degradation waste gas collection through holes (141) that are connected to the interior of the shell. One end of multiple degradation waste gas exhaust pipes (142) located inside the degradation mechanism housing (11) is connected to each of the degradation waste gas collection shells (14). Multiple desorption and release openings (210) are arranged vertically on the side of the desorption mechanism housing (21); The room temperature desorption reaction chamber (22) is fixed with a second sealing plate (221) at one end of the desorption and release opening (210). The second sealing plate (221) and the outer wall of the desorption mechanism housing (21) are sealed together by a sealing strip. The top of the desorption mechanism housing (21) is fixed with a plurality of horizontally extending desorption waste gas collection shells (25). The bottom of the desorption waste gas collection shells (25) has a plurality of desorption waste gas collection through holes (251) that are connected to the interior of the shell. One end of a plurality of desorption waste gas exhaust pipes (252) located inside the desorption mechanism housing (21) is connected to each desorption waste gas collection shell (25).

3. The system for treating contaminated soil based on microbial coupling ambient temperature desorption technology according to claim 1, characterized in that, The inner wall of the degradation mechanism housing (11) is connected to the bacterial agent reaction chamber (12) via a first slide rail mechanism (15). The first slide rail mechanism (15) includes a first support shaft (151) fixed on the inner wall of the degradation mechanism housing (11). Multiple first support shafts (151) are arranged in a horizontal direction. A first support roller (152) is rotatably connected to the first support shaft (151). A horizontally extending first support beam (153) is fixed on the side of the bacterial agent reaction chamber (12). The lower side of the first support beam (153) is rolled and supported on the top of multiple first support rollers (152). The arrangement direction of the plurality of first support shafts (151) is parallel to the through direction of the degradation pick-up and put-out opening (110), the rotation axis of the first support roller (152) is perpendicular to the through direction of the degradation pick-up and put-out opening (110), and the extension direction of the first support beam (153) is parallel to the through direction of the degradation pick-up and put-out opening (110). Each of the two opposing sides of the bacterial agent reaction chamber (12) is fixed with one of the first support beams (153).

4. The system for treating contaminated soil based on microbial coupling ambient temperature desorption technology according to claim 1, characterized in that, The degradation mechanism housing (11) is provided with a humidity regulating mechanism (16). The humidity regulating mechanism (16) includes multiple humidity regulating water supply pipes (161) that are fixed on the inner side wall of the degradation mechanism housing (11) and extend horizontally. Multiple atomizing nozzles (162) that are connected to the inside of the humidity regulating water supply pipes (161) are fixed on the side of the humidity regulating water supply pipes (161) near the bacterial agent reaction chamber (12). Each of the humidity regulating water supply pipes (161) has a water mist migration drive housing (163) fixed above and below it. The side of the water mist migration drive housing (163) is fixed with a plurality of water mist migration airflow nozzles (164) that are connected to its interior and extend horizontally. Water is fed into the humidity-regulating water supply pipe (161) using a delivery pump of existing technology, and pressurized intermittently, so that the water in the humidity-regulating water supply pipe (161) is intermittently sprayed out from the atomizing nozzle (162). An air conveyor of existing technology is used to intermittently ventilate the water mist migration drive housing (163), so that horizontal airflow is intermittently sprayed out from each water mist migration airflow nozzle (164). The horizontal airflow will promote the migration of water mist to the top of the bacterial agent reaction chamber (12), and under the action of gravity, it is evenly sprinkled inside the bacterial agent reaction chamber (12).

5. The system for treating contaminated soil based on microbial coupling ambient temperature desorption technology according to claim 1, characterized in that, The degradation mechanism housing (11) has a first waste liquid collection shell (17) fixed at the bottom. The top of the first waste liquid collection shell (17) has a plurality of concave first waste liquid collection pits (171). The bottom of the first waste liquid collection pits (171) has a first waste liquid collection hole (172) that communicates with the inside of the first waste liquid collection shell (17). The bottom of the first waste liquid collection shell (17) has a first waste liquid discharge pipe (173) that communicates with the inside of it. The first waste liquid discharge pipe (173) extends to the outside of the degradation mechanism housing (11).

6. The system for treating contaminated soil based on microbial coupling ambient temperature desorption technology according to claim 1, characterized in that, The degradation mechanism housing (11) is provided with a heat preservation mechanism (18) on the outside. The heat preservation mechanism (18) includes a heat preservation shell (181) that is tightly fixed on the outside of the degradation mechanism housing (11). The heat preservation shell (181) has a hollow structure inside. An electric heating plate (182) is fixed on the side of the heat preservation shell (181) near the degradation mechanism housing (11).

7. The system for treating contaminated soil based on microbial coupling ambient temperature desorption technology according to claim 1, characterized in that, The microbial agent reaction chamber (12) is provided with a pore adjustment mechanism (19), which includes a pore adjustment fitting plate (191) that is slidably connected to the bottom of the microbial agent reaction chamber (12) in the horizontal direction. The pore adjustment fitting plate (191) has a plurality of vertically penetrating pore fitting holes (190). A pore adjustment fixing cylinder (192) with one end open is fixed on the inner wall of the bacterial agent reaction chamber (12). The axis of the pore adjustment fixing cylinder (192) is parallel to the sliding direction of the pore adjustment mating plate (191). A pore adjustment sliding cylinder (193) is slidably connected to the outer side of the pore adjustment fixing cylinder (192). The pore adjustment sliding cylinder (193) is fixedly connected to the pore adjustment mating plate (191). The pore adjustment fixing cylinder (192) is provided with a pore adjustment drive rod (194) for driving the pore adjustment sliding cylinder (193) to move. The pore adjustment drive rod (194) is an existing electrically controlled telescopic rod driven by a servo motor. The outer rod end of the pore adjustment drive rod (194) is fixedly connected to the pore adjustment fixing cylinder (192), and the inner rod end of the pore adjustment drive rod (194) is fixedly connected to the pore adjustment sliding cylinder (193).

8. A system for treating contaminated soil based on microbial coupling ambient temperature desorption technology according to claim 1, characterized in that, The desorption mechanism housing (21) has an internal and external through insertion hole (211) on its side, and the open end of the ozone delivery pipe (23) is inserted into the insertion hole (211). The insertion hole (211) is located at the end away from the extraction and release opening (210); The ozone delivery main pipe (241) is connected to an ozone delivery connector (242) at the end away from the nanobubble generating system (24). The ozone delivery connector (242) is fixed on the side wall of the desorption mechanism housing (21). The ozone delivery connector (242) is arranged coaxially with each of the ozone delivery pipes (23). One end of the ozone delivery connector (242) located inside the desorption mechanism housing (21) is inserted into the open end of the ozone delivery pipe (23), and a sealing ring (2420) is fixed on the part of the ozone delivery connector (242) that is inserted into the ozone delivery pipe (23).

9. A system for treating contaminated soil based on microbial coupling ambient temperature desorption technology according to claim 1, characterized in that, The inner wall of the desorption mechanism housing (21) is connected to the ambient temperature desorption reaction chamber (22) via a second slide rail mechanism (26). The second slide rail mechanism (26) includes a second support shaft (261) fixed on the inner wall of the desorption mechanism housing (21). Multiple second support shafts (261) are arranged in a horizontal direction. Second support rollers (262) are rotatably connected to the second support shafts (261). A horizontally extending second support beam (263) is fixed on the side of the ambient temperature desorption reaction chamber (22). The lower side of the second support beam (263) is rolled and supported on the top of multiple second support rollers (262). The arrangement direction of the plurality of second support shafts (261) is parallel to the through direction of the desorption and release opening (210), the rotation axis of the second support roller (262) is perpendicular to the through direction of the desorption and release opening (210), and the extension direction of the second support beam (263) is parallel to the through direction of the desorption and release opening (210). Each of the two opposing sides of the ambient temperature desorption reaction chamber (22) is fixed with a second support beam (263); Below each of the second support rollers (262) is a lateral support seat (264) fixedly connected to the inner wall of the desorption mechanism housing (21). A lateral support roller (265) is rotatably connected to the lateral support seat (264). The rotation axis of the lateral support roller (265) is in the vertical direction. The lateral support roller (265) presses against the side of the ambient temperature desorption reaction chamber (22) with the second support beam (263).

10. A system for treating contaminated soil based on microbial coupling ambient temperature desorption technology according to claim 1, characterized in that, A second waste liquid collection shell (27) is fixed at the bottom inside the desorption mechanism housing (21). The top of the second waste liquid collection shell (27) has a plurality of concave second waste liquid collection pits (271). The bottom of the second waste liquid collection pits (271) has a second waste liquid collection hole (272) that communicates with the inside of the second waste liquid collection shell (27). A second waste liquid discharge pipe (273) that communicates with the inside of the second waste liquid collection shell (27) is fixed at the bottom of the second waste liquid collection shell (27). The second waste liquid discharge pipe (273) extends to the outside of the desorption mechanism housing (21).

Images