CN104307863A - Severely-polluted soil remediation device - Google Patents
Severely-polluted soil remediation device Download PDFInfo
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- CN104307863A CN104307863A CN201410563874.8A CN201410563874A CN104307863A CN 104307863 A CN104307863 A CN 104307863A CN 201410563874 A CN201410563874 A CN 201410563874A CN 104307863 A CN104307863 A CN 104307863A
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Abstract
The invention provides a severely-polluted soil remediation device. The severely-polluted soil remediation device comprises a soil adding and discharging system, a soil heating and stirring system and a volatile waste gas purification system, wherein the soil adding and discharging system comprises a soil discharging inclined hopper, a soil barrel and a soil adding opening; the soil heating and stirring system comprises an air inlet pipe, an air heating system, a stirring motor, a stirring transmission shaft and stirring blades; the volatile waste gas purification system sequentially comprises a volatile waste gas oxidization and absorption region, a volatile waste gas alkalization and absorption region, a demister, a volatile waste gas acidification and absorption region, an active carbon adsorption layer and an exhausting fan from bottom to top; or the volatile waste gas purification system sequentially comprises the volatile waste gas oxidization and absorption region, the volatile waste gas acidification and absorption region, the demister, the volatile waste gas alkalization and absorption region, the active carbon adsorption layer and the exhausting fan from bottom to top.
Description
Technical field
The present invention relates to contaminated soil remediation Treatment process field, especially a kind of serious pollution soil restoring device.
Background technology
Modern petroleum exploration, exploitation, processing enterprise; and the production process of the enterprise such as chemical industry, pharmacy often can cause severe contamination to soil; in these heavily contaminated places, the volatile matter content such as diesel oil, benzene, toluene, carbon tetrachloride is very high; and these pollutants belong to hydrophobic organic compound mostly; solubility in aqueous phase is less; can be trapped in soil environment for a long time; both soil texture and function had been destroyed; the physicochemical property of soil is produced and has a strong impact on, become again the long-time pollution source of surface water and groundwater.At present the process such as strange land is burned, landfill, hydrodynamic cleaning that to be scooped away by soil are adopted more to the improvement of severe volatile contaminant soil, but it is higher to there is processing cost, easily produces secondary pollution problems.
Chinese patent " volatility and semi-volatile organic matter contaminated soil Processing tecchnics and the device outside the venue " (patent No.: 200410056888.7) disclose a kind of volatility and semi-volatile organic matter contaminated soil Processing tecchnics and device outside the venue, this device has advantages of simple structure and simple; But there is following defect in this Patent equipment: volatility and semi-volatile organic matter, only by the absorption of active carbon, are difficult to the discharge standard meeting air.
Summary of the invention
The technical problem to be solved in the present invention is: the technical problem overcoming above-mentioned patent, there is provided a kind of serious pollution soil restoring device, effectively can process various volatility serious pollution soil, structure is simple, easy to operate, soil remediation improvement can be carried out on the spot at pollution scene.
The technical solution adopted for the present invention to solve the technical problems is: a kind of serious pollution soil restoring device, comprises soil and adds and exhaust system, soil heating and stirring system, volatilization waste gas cleaning system; Soil interpolation and exhaust system, soil heating and stirring system are positioned at the bottom of whole serious pollution soil restoring device, and volatilization waste gas cleaning system is positioned at the middle and upper part of whole serious pollution soil restoring device.
Described soil adds and exhaust system comprises soil discharge tipping bucket, soil cylinder, soil interpolation mouth.
Described soil discharge tipping bucket is positioned at the lowest part of soil interpolation and exhaust system, and the top of soil discharge tipping bucket is conical structure, the side of the oblique whole serious pollution soil restoring device of lower outlet.
Described soil cylinder bottom is connected with the suitable for reading of soil discharge tipping bucket, and soil cylinder and soil discharge tipping bucket centre are with separating by extraction baffle plate.Export contrary side under described soil interpolation mouth is positioned at soil cylinder top, soil discharge tipping bucket, soil interpolation mouth is provided with the sliding door that circular arc is opened up and down.
Described soil heating and stirring system comprise air inlet pipe, air heating system, stirring motor, stirring power transmission shaft and stirring vane.Described air heating system is positioned at soil can the top of extraction baffle plate, adopts electric heater unit, be fixed on the inwall of soil cylinder by cross frame.Described stirring power transmission shaft and stirring vane are hollow structure, and stirring vane is provided with hot air outlet.
Described volatilization waste gas cleaning system is upwards followed successively by volatilization off-gas oxidizing uptake zone, volatilization waste gas alkalization uptake zone, demister, the gas acidized uptake zone of volatilization, activated carbon adsorption layer and exhaust fan or described volatilization waste gas cleaning system and is upwards followed successively by volatilization off-gas oxidizing uptake zone, the gas acidized uptake zone that volatilizees, demister, the alkalization of volatilization waste gas uptake zone, activated carbon adsorption layer from bottom from bottom.
Described volatilization off-gas oxidizing uptake zone is positioned at the top of soil cylinder; Volatilization off-gas oxidizing absorbent assembly is provided with in described volatilization off-gas oxidizing uptake zone, described volatilization off-gas oxidizing absorbent assembly comprises the ozone oxidation water spray system being arranged in volatilization off-gas oxidizing assembly top, the ozone oxidation water aqua storage tank being positioned at volatilization off-gas oxidizing absorbent assembly bottom and is placed in the ozonation aerated dish of ozone oxidation water aqua storage tank, described ozonation aerated dish is communicated with ozone generator by aeration tube, also has the ozone oxidation water-circulating pump ozone oxidation water in ozone oxidation water aqua storage tank being pumped into ozone oxidation water spray system.
Described volatilization waste gas alkalization uptake zone is provided with volatilization waste gas alkalization absorbent assembly, described volatilization waste gas alkalization absorbent assembly comprise be arranged in volatilization waste gas alkalization assembly top alkaline solution spray equipment, be positioned at the alkaline solution aqua storage tank of volatilization waste gas alkalization absorbent assembly bottom and the alkaline solution of alkaline solution aqua storage tank pumped into the alkaline solution circulating pump of alkaline solution spray equipment.
The gas acidized uptake zone of described volatilization be provided with volatilization gas acidized absorbent assembly, the gas acidized absorbent assembly of described volatilization comprise be arranged in volatilization off-gas oxidizing assembly top acid solution spray equipment, be positioned at the acid solution aqua storage tank of gas acidized absorbent assembly bottom of volatilizing and the acid solution of acid solution aqua storage tank pumped into the acid solution circulating pump of acid solution spray equipment.
Described volatilization waste gas alkalization absorbent assembly and volatilize between gas acidized absorbent assembly and be provided with demister, demister is collected by the large drop in gas, and make it to return, and reduces the moisture content in gas, its operation principle is that gas enters demister, through a series of bend, discharge from top, and water droplet is due to the effect of its quality and kinetic energy, through racetrack portion, straight line falls, and collides the surface of demister, and is rebounding under Action of Gravity Field.
The gas acidized absorbent assembly top of described volatilization is provided with activated carbon adsorption layer, in described activated carbon adsorption layer, active carbon is set, the advantages such as active carbon requires to have hole prosperity, specific area is large, adsorption rate is fast, friction resistant, resistance to flushing, as the operation through the long period, discovery active carbon becomes sticky, and just need change active carbon in time when gas prompt drop is low.
Concrete, for cylindrical, upper and lower two ends are conical tank body in the middle of described serious pollution soil restoring device, described tank body offers observation port and examine and replace mouth, tank body volume size can be determined according to the number of pending soil amount, adopts vertical vertical placement.
Clean gas for ease of processing is discharged, and the conical tank body place of described serious pollution soil restoring device topmost is provided with exhaust fan.
Further and cylindrical tank container matches, described ozone oxidation water aqua storage tank, alkaline solution aqua storage tank and acid solution aqua storage tank are circle basin shape, be equipped with shower water aggregation apparatus above ozone oxidation water aqua storage tank, alkaline solution aqua storage tank and acid solution aqua storage tank, the lower end diameter of described shower water aggregation apparatus is less than the diameter of ozone oxidation water aqua storage tank, alkaline solution aqua storage tank and acid solution aqua storage tank.Shower water aggregation apparatus can make shower water assemble and be back to ozone oxidation water aqua storage tank, alkaline solution aqua storage tank and acid solution aqua storage tank.
Further, for supplementing absorbent solution in time, described volatilization waste gas alkalization absorbent assembly is also furnished with adder-subtractor, and described adder-subtractor comprises alkali liquid tank and agitating device, and alkali liquid tank is communicated with alkaline solution circulating pump by pipeline with valve; The gas acidized assembly that volatilizees also is furnished with means for feeding acid, and described means for feeding acid comprises acid solution tank and agitating device, and acid solution tank is communicated with acid solution circulating pump by pipeline with valve.The matched proportion density of absorbent solution decides according to the volatilization exhausted air quantity of process and volatilization exhaust gas concentration.
Further, described ozone oxidation water spray system, alkaline solution spray equipment and acid solution spray equipment are helical form spray equipment; The water ejected presents vaporific, and mixing together between water smoke, do not stay dead angle, be conducive to the contact area expanding volatilization waste gas and solution, improve absorptivity and assimilation effect.
The alkaline solution that described volatilization waste gas alkalization absorbent assembly adopts is sodium hydroxide solution or limewash, and the acid solution that the gas acidized absorbent assembly of described volatilization adopts is sulfuric acid or hydrochloric acid.
Further preferred equipment, described ozone generator is intermediate-frequency ozone generator, and power consumption is few, and floor space is little, can realize automatically controlling.
Further preferred equipment, demister is deflection plate demister or overflowing board demister.
Further preferred equipment, the bottommost of package unit is provided with three supporting legs.
Further, for saving space and attractive in appearance, described ozone generator, ozone oxidation water-circulating pump, alkaline solution circulating pump and acid solution circulating pump are laid between three supporting legs of bottom, the tank body of described integrated apparatus is provided with groove, be provided with tube connector in groove, tube connector couples together aqua storage tank, spray equipment, circulating pump.
The invention has the beneficial effects as follows, first open soil and add mouth, contaminated soil is loaded in soil cylinder, air heating system heats from the fresh air outside system, under the pump drainage effect of exhaust fan, hot-air enters soil by the hot air outlet on the stirring power transmission shaft of hollow and stirring vane and stirring vane, soil takes volatile materials out of under the effect of heating and stir, volatilization waste gas rises in oxidative absorption district, ozone oxidation water sprays from uniform ozone oxidation water spray system, form countless fine mist, with volatilization waste gas fully mix contact after there is chemical reaction, harmful substance in volatilization waste gas is oxidized to the small-molecule substance being easy to absorb and adsorb, a part is absorbed in ozone oxidation water, volatilization waste gas continues to rise and contacts with the alkaline solution that alkaline solution spray equipment sprays, volatilization waste gas middle acid substance and alkaline matter generation chemical reaction, reaction product flows in the alkaline solution aqua storage tank of bottom with alkaline solution, then enter demister, the drop in volatilization waste gas is here blocked, volatilization waste gas continues to rise and contacts with the acid solution that acid solution spray equipment sprays, chemical reaction is there is in the alkaline matter in volatilization waste gas with acid, reaction product flows in the acid solution aqua storage tank of bottom with acid solution, then activated carbon adsorption layer is entered, the material be mingled with in volatilization waste gas and drop are here blocked and absorb, so far the waste gas that volatilizees is processed into clean gas, realizes qualified discharge, repaired the extraction baffle plate in the middle of rear extraction soil cylinder and soil discharge tipping bucket, soil is discharged by soil discharge tipping bucket, backfill original position, serious pollution soil restoring device structure of the present invention is simple, is easy to manufacture, can the effective various serious pollution soil of repair process.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is embodiments of the invention 1 structural representations;
In figure: 1. soil discharge tipping bucket, 2. soil cylinder, 3. soil adds mouth, 4. can extraction baffle plate, 5. air inlet pipe, 6. air heating system, 7. stirring motor, 8. stir power transmission shaft, 9. stirring vane, 10. ozone oxidation water spray system, 11. ozone oxidation water aqua storage tanks, 12. ozonation aerated dishes, 13. ozone generators, 14. ozone oxidation water-circulating pumps, 15. alkaline solution spray equipments, 16. alkaline solution aqua storage tanks, 17. alkaline solution circulating pumps, 18. acid solution spray equipments, 19. acid solution aqua storage tanks, 20. acid solution circulating pumps, 21. demisters, 22. activated carbon adsorption layers, 23. exhaust fans, 24. shower water aggregation apparatus, 25. supporting legs.
Detailed description of the invention
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
Embodiment 1
Of the present invention a kind of serious pollution soil restoring device as shown in Figure 1, comprises soil and adds and exhaust system, soil heating and stirring system, volatilization waste gas cleaning system; Soil interpolation and exhaust system, soil heating and stirring system are positioned at the bottom of whole serious pollution soil restoring device, and volatilization waste gas cleaning system is positioned at the middle and upper part of whole serious pollution soil restoring device.
Described soil adds and exhaust system comprises soil discharge tipping bucket 1, soil cylinder 2, soil interpolation mouth 3.
Described soil discharge tipping bucket 1 is positioned at the lowest part of soil interpolation and exhaust system, and the top of soil discharge tipping bucket 1 is conical structure, the side of the oblique whole serious pollution soil restoring device of lower outlet.
Described soil cylinder 2 bottom is connected with the suitable for reading of soil discharge tipping bucket 1, and soil cylinder 2 is middle with separating by extraction baffle plate 4 with soil discharge tipping bucket 1; Described soil adds the top that mouth 3 is positioned at soil cylinder 2, and in the side that the 1 time outlet of soil discharge tipping bucket is contrary, soil interpolation mouth 3 is provided with the sliding door that circular arc is opened up and down.
Described soil heating and stirring system comprise air inlet pipe 5, air heating system 6, stirring motor 7, stir power transmission shaft 8 and stirring vane 9; Described air heating system 6 is positioned at soil can the top of extraction baffle plate 4, adopts electric heater unit, be fixed on the inwall of soil cylinder 2 by cross frame; Described stirring motor 7 is positioned at the top of soil cylinder 2, is fixed on the inwall of soil cylinder 2 by cross frame, and described stirring power transmission shaft 8 and stirring vane 9 are hollow structure, and stirring vane 9 is provided with hot air outlet.
Described volatilization waste gas cleaning system is upwards followed successively by volatilization off-gas oxidizing uptake zone, the alkalization of volatilization waste gas uptake zone, demister, the gas acidized uptake zone of volatilization, activated carbon adsorption layer from bottom.
Described volatilization off-gas oxidizing uptake zone is positioned at the top of soil cylinder 2; Volatilization off-gas oxidizing absorbent assembly is provided with in described volatilization off-gas oxidizing uptake zone, described volatilization off-gas oxidizing absorbent assembly comprises the ozone oxidation water spray system 10 being arranged in volatilization off-gas oxidizing assembly top, the ozone oxidation water aqua storage tank 11 being positioned at volatilization off-gas oxidizing absorbent assembly bottom and is placed in the ozonation aerated dish 12 of ozone oxidation water aqua storage tank, described ozonation aerated dish is communicated with ozone generator 13 by aeration tube, also has the ozone oxidation water-circulating pump 14 ozone oxidation water in ozone oxidation water aqua storage tank being pumped into ozone oxidation water spray system.
Described volatilization waste gas alkalization uptake zone is provided with volatilization waste gas alkalization absorbent assembly, described volatilization waste gas alkalization absorbent assembly comprise be arranged in volatilization waste gas alkalization assembly top alkaline solution spray equipment 15, be positioned at the alkaline solution aqua storage tank 16 of volatilization waste gas alkalization absorbent assembly bottom and the alkaline solution of alkaline solution aqua storage tank pumped into the alkaline solution circulating pump 17 of alkaline solution spray equipment.
The gas acidized uptake zone of described volatilization be provided with volatilization gas acidized absorbent assembly, the gas acidized absorbent assembly of described volatilization comprise be arranged in volatilization off-gas oxidizing assembly top acid solution spray equipment 18, be positioned at the acid solution aqua storage tank 19 of gas acidized absorbent assembly bottom of volatilizing and the acid solution of acid solution aqua storage tank pumped into the acid solution circulating pump 20 of acid solution spray equipment.
Described volatilization waste gas alkalization absorbent assembly and volatilize between gas acidized absorbent assembly and be provided with demister 21, demister 21 is collected by the large drop in gas, and make it to return, and reduces the moisture content in gas, its operation principle is that gas enters demister, through a series of bend, discharge from top, and water droplet is due to the effect of its quality and kinetic energy, through racetrack portion, straight line falls, and collides the surface of demister, and is rebounding under Action of Gravity Field.
The gas acidized absorbent assembly top of described volatilization is provided with activated carbon adsorption layer 22, in described activated carbon adsorption layer 22, active carbon is set, the advantages such as active carbon requires to have hole prosperity, specific area is large, adsorption rate is fast, friction resistant, resistance to flushing, as the operation through the long period, discovery active carbon becomes sticky, and just need change active carbon in time when gas prompt drop is low.
Concrete, for cylindrical, upper and lower two ends are conical tank body in the middle of described serious pollution soil restoring device, described tank body offers observation port and examine and replace mouth, tank body volume size can be determined according to the number of pending soil amount, adopts vertical vertical placement.
Clean gas for ease of processing is discharged, and the conical tank body place of described serious pollution soil restoring device topmost is provided with exhaust fan 23.
Further and cylindrical tank container matches, described ozone oxidation water aqua storage tank 11, alkaline solution aqua storage tank 16 and acid solution aqua storage tank 19 is circle basin shape, be equipped with shower water aggregation apparatus 24 above ozone oxidation water aqua storage tank 11, alkaline solution aqua storage tank 16 and acid solution aqua storage tank 19, the lower end diameter of described shower water aggregation apparatus 24 is less than the diameter of ozone oxidation water aqua storage tank 11, alkaline solution aqua storage tank 16 and acid solution aqua storage tank 19; Shower water aggregation apparatus 24 can make shower water gathering be back in ozone oxidation water aqua storage tank 11, alkaline solution aqua storage tank 16 and acid solution aqua storage tank 19.
Further, for supplementing absorbent solution in time, described volatilization waste gas alkalization absorbent assembly is also furnished with adder-subtractor, and described adder-subtractor comprises alkali liquid tank and agitating device, and alkali liquid tank is communicated with alkaline solution circulating pump 17 by pipeline with valve; The gas acidized assembly that volatilizees also is furnished with means for feeding acid, and described means for feeding acid comprises acid solution tank and agitating device, and acid solution tank is communicated with acid solution circulating pump 20 by pipeline with valve; The matched proportion density of absorbent solution decides according to the volatilization exhausted air quantity of process and volatilization exhaust gas concentration.
Further, described ozone oxidation water spray system 10, alkaline solution spray equipment 15 and acid solution spray equipment 18 is helical form spray equipment; The water ejected presents vaporific, and mixing together between water smoke, do not stay dead angle, be conducive to the contact area expanding volatilization waste gas and solution, improve absorptivity and assimilation effect.
Particularly, the alkaline solution that described volatilization waste gas alkalization absorbent assembly adopts is sodium hydroxide solution or limewash, and the acid solution that the gas acidized absorbent assembly of described volatilization adopts is sulfuric acid or hydrochloric acid.
Further preferred equipment, described ozone generator 13 adopts intermediate-frequency ozone generator, and power consumption is few, and floor space is little, can realize automatically controlling.
Further preferred equipment, demister 21 is deflection plate demister or overflowing board demister.
Further preferred equipment, the bottommost of package unit is provided with three supporting legs 25.
Further, for saving space and attractive in appearance, described ozone generator 13, ozone oxidation water-circulating pump 14, alkaline solution circulating pump 17 and acid solution circulating pump 20 are laid between three supporting legs 25 of bottom, the tank body of described integrated apparatus is provided with groove, be provided with tube connector in groove, tube connector couples together aqua storage tank, spray equipment, circulating pump.
First open soil and add mouth 3, contaminated soil is loaded in soil cylinder 2, air heating system heats from the fresh air outside system, hot-air enters soil by the hot air outlet on the stirring power transmission shaft 8 of hollow and stirring vane 9 and stirring vane 9, volatile materials is taken out of under the pump drainage effect of exhaust fan 23, volatilization waste gas rises in oxidative absorption district, ozone oxidation water sprays from uniform ozone oxidation water spray system 10, form countless fine mist, with volatilization waste gas fully mix contact after there is chemical reaction, harmful substance in volatilization waste gas is oxidized to the small-molecule substance being easy to absorb and adsorb, a part is absorbed in ozone oxidation water, volatilization waste gas continues to rise and contacts with the alkaline solution that alkaline solution spray equipment 15 sprays, volatilization waste gas middle acid substance and alkaline matter generation chemical reaction, reaction product flows in bottom alkaline solution aqua storage tank 16 with alkaline solution, then enter demister 21, the drop in volatilization waste gas is here blocked, volatilization waste gas continues to rise and contacts with the acid solution that acid solution spray equipment 18 sprays, chemical reaction is there is in the alkaline matter in volatilization waste gas with acid, reaction product flows in bottom acid solution aqua storage tank 19 with acid solution, then activated carbon adsorption layer 22 is entered, the pollutant be mingled with in volatilization waste gas and drop are here blocked and absorb, so far the waste gas that volatilizees is processed into clean gas, realizes qualified discharge, repaired in the middle of rear extraction soil cylinder 2 and soil discharge tipping bucket 1 can extraction baffle plate 4, soil is discharged by soil discharge tipping bucket 1, backfill original position.
Embodiment 2
The difference of the 2nd embodiment of the present invention and the 1st embodiment is: the volatile materials meta-alkalescence in soil, the waste gas that do not volatilize in serious pollution soil restoring device alkalization uptake zone, described serious pollution soil restoring device comprises soil to be added and exhaust system, soil heating and stirring system, volatilization off-gas oxidizing uptake zone, the gas acidized uptake zone that volatilizees, demister 21, activated carbon adsorption layer 22 and exhaust fan 23.
Embodiment 3
The difference of the 3rd embodiment of the present invention and the 1st embodiment is: the volatile materials slant acidity in soil, do not volatilize in serious pollution soil restoring device gas acidized uptake zone, and described serious pollution soil restoring device comprises soil interpolation and exhaust system, soil heating and stirring system, volatilization off-gas oxidizing uptake zone, volatilize waste gas alkalization uptake zone, demister 21, activated carbon adsorption layer 22 and exhaust fan 23.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on description, must determine its technical scope according to right.
Claims (2)
1. a serious pollution soil restoring device, is characterized in that: described device comprises soil to be added and exhaust system, soil heating and stirring system, volatilization waste gas cleaning system; Soil interpolation and exhaust system, soil heating and stirring system are positioned at the bottom of whole serious pollution soil restoring device, and volatilization waste gas cleaning system is positioned at the middle and upper part of whole serious pollution soil restoring device;
Described soil adds and exhaust system comprises soil discharge tipping bucket (1), soil cylinder (2), soil interpolation mouth (3);
Described soil discharge tipping bucket (1) is positioned at the lowest part of soil interpolation and exhaust system, and the top of soil discharge tipping bucket (1) is conical structure, the side of the oblique whole serious pollution soil restoring device of lower outlet;
The suitable for reading connection of described soil cylinder (2) bottom and soil discharge tipping bucket (1), with separating by extraction baffle plate (4) in the middle of soil cylinder (2) and soil discharge tipping bucket (1); Described soil adds the top that mouth (3) is positioned at soil cylinder (2), under soil discharge tipping bucket (1), export contrary side, and soil interpolation mouth (3) is provided with the sliding door that circular arc is opened up and down;
Described soil heating and stirring system comprise air inlet pipe (5), air heating system (6), stirring motor (7), stir power transmission shaft (8) and stirring vane (9); Described air heating system (6) is positioned at soil can the top of extraction baffle plate (4), adopts electric heater unit, be fixed on the inwall of soil cylinder (2) by cross frame; Described stirring motor (7) is positioned at the top of soil cylinder (2), be fixed on the inwall of soil cylinder (2) by cross frame, described stirring power transmission shaft (8) and stirring vane (9) are hollow structure, and stirring vane (9) is provided with hot air outlet;
Described volatilization waste gas cleaning system is upwards followed successively by volatilization off-gas oxidizing uptake zone, the alkalization of volatilization waste gas uptake zone, demister, the gas acidized uptake zone of volatilization, activated carbon adsorption layer and exhaust fan from bottom;
Described volatilization off-gas oxidizing uptake zone is positioned at the top of soil cylinder (2), volatilization off-gas oxidizing absorbent assembly is provided with in described volatilization off-gas oxidizing uptake zone, described volatilization off-gas oxidizing absorbent assembly comprises the ozone oxidation water spray system (10) being positioned at volatilization off-gas oxidizing assembly top, be arranged in the ozone oxidation water aqua storage tank (11) of volatilization off-gas oxidizing absorbent assembly bottom and be placed in the ozonation aerated dish (12) of ozone oxidation water aqua storage tank, described ozonation aerated dish is communicated with ozone generator (13) by aeration tube, also there is the ozone oxidation water-circulating pump (14) ozone oxidation water in ozone oxidation water aqua storage tank being pumped into ozone oxidation water spray system,
Described volatilization waste gas alkalization uptake zone is provided with volatilization waste gas alkalization absorbent assembly, described volatilization waste gas alkalization absorbent assembly comprise be arranged in volatilization waste gas alkalization assembly top alkaline solution spray equipment (15), be positioned at the alkaline solution aqua storage tank (16) of volatilization waste gas alkalization absorbent assembly bottom and the alkaline solution of alkaline solution aqua storage tank pumped into the alkaline solution circulating pump (17) of alkaline solution spray equipment;
The gas acidized uptake zone of described volatilization be provided with volatilization gas acidized absorbent assembly, the gas acidized absorbent assembly of described volatilization comprise be arranged in volatilization off-gas oxidizing assembly top acid solution spray equipment (18), be positioned at the acid solution aqua storage tank (19) of gas acidized absorbent assembly bottom of volatilizing and the acid solution of acid solution aqua storage tank pumped into the acid solution circulating pump (20) of acid solution spray equipment; Described volatilization waste gas alkalization absorbent assembly and volatilize between gas acidized absorbent assembly and be provided with demister (21); The gas acidized absorbent assembly top of described volatilization is provided with activated carbon adsorption layer (22), arranges active carbon in described activated carbon adsorption layer (22);
For cylindrical, upper and lower two ends are conical tank body in the middle of described serious pollution soil restoring device, adopt vertical vertical placement; The conical tank body place of described serious pollution soil restoring device topmost is provided with exhaust fan (23); Described ozone oxidation water aqua storage tank (11), alkaline solution aqua storage tank (16) and acid solution aqua storage tank (19) are circle basin shape, ozone oxidation water aqua storage tank (11), alkaline solution aqua storage tank (16) and acid solution aqua storage tank (19) top is equipped with shower water aggregation apparatus (24), and the lower end diameter of described shower water aggregation apparatus (24) is less than the diameter of ozone oxidation water aqua storage tank (11), alkaline solution aqua storage tank (16) and acid solution aqua storage tank (19); Shower water aggregation apparatus (24) can make shower water gathering be back in ozone oxidation water aqua storage tank (11), alkaline solution aqua storage tank (16) and acid solution aqua storage tank (19);
Described volatilization waste gas alkalization absorbent assembly is also furnished with adder-subtractor, and described adder-subtractor comprises alkali liquid tank and agitating device, and alkali liquid tank is communicated with alkaline solution circulating pump (17) by pipeline with valve; The gas acidized assembly that volatilizees also is furnished with means for feeding acid, and described means for feeding acid comprises acid solution tank and agitating device, and acid solution tank is communicated with acid solution circulating pump (20) by pipeline with valve; The bottommost of package unit is provided with three supporting legs (25).
2. serious pollution soil restoring device according to claim 1, it is characterized in that: described ozone generator (13), ozone oxidation water-circulating pump (14), alkaline solution circulating pump (17) and acid solution circulating pump (20) are laid between three supporting legs (25) of bottom, the tank body of described serious pollution soil restoring device is provided with groove, be provided with tube connector in groove, tube connector couples together aqua storage tank, spray equipment, circulating pump.
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| CN201410563874.8A CN104307863B (en) | 2014-10-21 | 2014-10-21 | Serious pollution soil restoring device |
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| CN201410563874.8A CN104307863B (en) | 2014-10-21 | 2014-10-21 | Serious pollution soil restoring device |
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| CN112007944A (en) * | 2020-09-09 | 2020-12-01 | 广东佳德环保科技有限公司 | Volatile organic compound soil remediation device and method |
| CN113058987A (en) * | 2021-03-24 | 2021-07-02 | 常州大学 | Soil in-situ remediation device and method |
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