CN215236737U - Device for treating organic contaminated soil - Google Patents
Device for treating organic contaminated soil Download PDFInfo
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- CN215236737U CN215236737U CN202120966512.9U CN202120966512U CN215236737U CN 215236737 U CN215236737 U CN 215236737U CN 202120966512 U CN202120966512 U CN 202120966512U CN 215236737 U CN215236737 U CN 215236737U
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- soil
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- evaporator
- leaching
- liquid
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- 239000002689 soil Substances 0.000 title claims abstract description 90
- 238000002386 leaching Methods 0.000 claims abstract description 46
- 239000007788 liquid Substances 0.000 claims abstract description 39
- 238000007599 discharging Methods 0.000 claims abstract description 20
- 238000002425 crystallisation Methods 0.000 claims abstract description 15
- 230000008025 crystallization Effects 0.000 claims abstract description 15
- 238000005406 washing Methods 0.000 claims abstract description 7
- 238000003860 storage Methods 0.000 claims description 11
- 239000002904 solvent Substances 0.000 abstract description 34
- 239000003344 environmental pollutant Substances 0.000 abstract description 13
- 231100000719 pollutant Toxicity 0.000 abstract description 13
- 239000013557 residual solvent Substances 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract 1
- 238000005067 remediation Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000002957 persistent organic pollutant Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000011066 ex-situ storage Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000000575 pesticide Substances 0.000 description 2
- 150000003071 polychlorinated biphenyls Chemical class 0.000 description 2
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000011552 falling film Substances 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a handle device of organic contaminated soil, including soil drip washing ware, evaporimeter, crystal separator, condenser, the jar of keeping in, discharge conveyor. The utility model treats the organic contaminated soil by leaching, and the solvent is recovered by matching with the evaporator and the crystallization separator, so that the solvent does not need to be discharged, the solvent circulation is realized, and the solvent consumption is greatly reduced; when the hot liquid solvent discharged by the condenser is used for leaching soil, the solubility of pollutants can be improved, so that the leaching efficiency is improved; the discharging conveyor realizes automation of soil discharging on one hand, and can recover residual solvent in soil by matching with the heater and the steam collecting cover on the other hand, so that the solvent consumption is further reduced; the utility model discloses a plurality of soil drip washing ware realizes the continuous processing of whole device to polluting soil.
Description
Technical Field
The utility model belongs to the technical field of soil remediation, concretely relates to handle device of organic contaminated soil.
Background
The soil pollution problem in China is increasingly serious, and more than 20% of land has the pollution problem. This situation threatens the food safety of China and damages the health of eaters. In recent years, many enterprises that discharge organic wastes in large quantities, such as fertilizer plants, pesticide plants, chemical plants, etc., have been moved away from urban centers, and a large amount of pre-industrial and commercial land is left to be abandoned, left unused or no longer used. Among them, the concentration of organic pollutants in some soils is very high, and some pollutants even migrate to groundwater and diffuse resulting in a wider range of pollution. The soil organic pollutants mainly comprise petroleum hydrocarbons, polychlorinated biphenyls (PCBs), Polycyclic Aromatic Hydrocarbons (PAHs), chlorine-containing solvents, pesticides and the like, wherein the organic pollutants are almost all 'three-cause' substances. These contaminants in the soil may enter the body through direct contact, respiration, and the food chain, with potential health risks. At present, the relevant research of the soil remediation technology in China is in the starting stage, most of the research refers to the foreign advanced remediation technology, and the soil remediation technology still needs to be continuously innovated and improved.
The contaminated soil remediation method comprises a physical remediation method, a chemical remediation method, a biological remediation method and a combined remediation method and technical system. The soil leaching remediation technology can quickly remove pollutants from the soil, the high-concentration polluted soil can be treated in a short time, the treatment cost is relatively low, and the soil leaching remediation technology becomes one of hot spots and development directions of the research of the quick remediation technology of the polluted soil. The soil leaching technology is characterized in that a proper leaching agent is selected to be injected into a polluted soil layer according to the type and the property of pollutants, so that the pollutants in the soil are effectively eluted, and the purpose of removing the pollutants is achieved. In the repair project funded by the super fund in the United states, 8 soil leaching ex-situ repair demonstration sites exist, and foreign scholars have already performed relevant research on ex-situ leaching repair of the soil of the organic pollution sites in the 80 th century. Although the processes of soil excavation, transportation and the like exist in the ectopic leaching remediation, the process is simple, convenient and thorough, does not pollute underground water, has high pollutant removal rate and has good economic benefit. The prior art has various soil leaching devices, but has the problem that leaching liquid is easy to lose, and the device is inconvenient to continuously treat polluted soil. For this reason, it is necessary to develop an apparatus for treating organically-polluted soil, which can solve the above problems.
Disclosure of Invention
An object of the utility model is to provide a handle device of organic contaminated soil.
The utility model aims at realizing the method, which comprises a soil leaching device, an evaporator, a crystallization separator, a condenser, a temporary storage tank and a discharging conveyor, wherein the number of the soil leaching device is at least two, the bottom of the soil leaching device is connected with the top of the evaporator through a liquid discharge pipe, the bottom of the evaporator is connected with the top of the crystallization separator through the liquid discharge pipe, the side of the crystallization separator is connected with the side of the evaporator through a liquid return pipeline, the liquid return pipeline is provided with a liquid return pump, the top of the evaporator is connected with a steam inlet of the condenser through a steam pipeline, a liquid outlet of the condenser is connected with the temporary storage tank through a pipeline, the top in the soil leaching device is respectively provided with a leaching liquid distribution pipe, a liquid inlet of the liquid distribution pipe is respectively connected with a liquid outlet of the temporary storage tank through a pipeline, the discharging conveyor is a rectangular box conveyor, a conveying auger is arranged in the discharging conveyor, the discharging conveyor is arranged at the bottom of the soil leaching device, the top feed inlet of the discharging conveyor is connected with a discharge outlet at the bottom of the soil leaching device, a discharge valve is arranged at the discharge outlet, a heater is arranged at the bottom of the discharging conveyor, a plurality of steam ports are arranged at the top of the discharging conveyor along the conveying direction of the discharging conveyor, steam ports are respectively provided with a steam collecting cover, and the top of the steam collecting cover is connected with a steam inlet of a condenser through a pipeline.
The utility model has the advantages that: the utility model treats the organic contaminated soil by leaching, and the solvent is recovered by matching with the evaporator and the crystallization separator, so that the solvent does not need to be discharged, the solvent circulation is realized, and the solvent consumption is greatly reduced; when the hot liquid solvent discharged by the condenser is used for leaching soil, the solubility of pollutants can be improved, so that the leaching efficiency is improved; the discharging conveyor realizes automation of soil discharging on one hand, and can recover residual solvent in soil by matching with the heater and the steam collecting cover on the other hand, so that the solvent consumption is further reduced; the utility model discloses a plurality of soil drip washing ware realizes the continuous processing of whole device to polluting soil.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure: 1-a soil leaching device, 2-an evaporator, 3-a crystallization separator, 4-a condenser, 5-a temporary storage tank, 6-a discharge conveyor, 7-a liquid return pump, 8-a leaching liquid distribution pipe, 9-a heater, 10-a steam collection cover and 11-a stirrer.
Detailed Description
The following description of the present invention is provided with reference to the accompanying drawings, which are not intended to limit the present invention in any way, and any alterations or replacements made based on the teachings of the present invention are all within the protection scope of the present invention.
As shown in the attached figure 1, the utility model comprises a soil leaching device 1, an evaporator 2, a crystallization separator 3, a condenser 4, a temporary storage tank 5 and a discharging conveyor 6, wherein the number of the soil leaching device 1 is at least two, the bottom of the soil leaching device 1 is connected with the top of the evaporator 2 through a liquid discharge pipe, the bottom of the evaporator 2 is connected with the top of the crystallization separator 3 through a liquid discharge pipe, the side of the crystallization separator 3 is connected with the side of the evaporator 2 through a liquid return pipeline, the liquid return pipeline is provided with a liquid return pump 7, the top of the evaporator 2 is connected with a steam inlet of the condenser 4 through a steam pipeline, a liquid outlet of the condenser 4 is connected with the tank 5 through a pipeline, the top in the soil leaching device 1 is respectively provided with a leaching cloth liquid pipe 8, a liquid inlet of the leaching cloth pipe 8 is respectively connected with a liquid outlet of the temporary storage tank 5 through a pipeline, the discharging conveyor 6 is a rectangular box type conveyor, inside is equipped with carries the auger, soil elution ware 1 bottom is located to ejection of compact conveyer 6, and 6 top feed inlets of ejection of compact conveyer are connected with 1 bottom bin outlet of soil elution ware, and the bin outlet is equipped with the relief valve, and 6 bottoms of ejection of compact conveyer are equipped with heater 9, and 6 tops of ejection of compact conveyer are equipped with a plurality of steam ports along 6 direction of delivery of ejection of compact conveyer, and the steam port is equipped with collection vapour cover 10 respectively, and collection vapour cover 10 top is passed through the pipeline and is connected with condenser 4 steam inlet.
The top feed inlet of soil washer 1 is provided with a soil feeder, which is an automatic feeding device well known to those skilled in the art, and realizes that soil automatically enters soil washer 1.
A stirrer 11 is arranged in the soil leaching device 1, and stirring is beneficial to full contact of the solvent and the polluted soil.
The number of the soil washer 1 is 3.
The evaporator 2 is a circulation type evaporator, a single-pass type evaporator or an immersion type evaporator.
The crystallization separator 3 is an MSMPR type crystallizer, a Swenson DTB type crystallizer, a Standard Messo turbulent motion crystallizer, a DTB type crystallizer with lower stirring and no elutriation leg, an evaporation crystallizer with mechanical stirring, a heat pump falling film crystallizer or a plate type crystallizer.
The condenser 4 is an evaporative condenser, a plate condenser, a shell-and-tube condenser or a hybrid condenser.
The drip washing liquid distributing pipe 8 is an annular pipe, and the bottom of the pipe body is provided with a liquid hole.
The heater 9 is a plate-type electric heater.
The solvent for leaching in the evaporator is a liquid mixture formed by mixing one or more of water, dimethyl sulfoxide, diethyl ether, pentane, dichloromethane, acetone, chloroform, methanol, tetrahydrofuran, hexane, carbon tetrachloride, ethyl acetate, ethanol, butanone, cyclohexane, acetonitrile, isopropanol, ethylenediamine, butanol, acetic acid, octane and butyl acetate according to any proportion.
The utility model discloses theory of operation and working process: the organic contaminated soil to be treated enters a soil feeder 1 through a feed inlet at the top of a soil leaching device 1, and a solvent for leaching is filled in an evaporator 2; the solvent is evaporated in the evaporator 2 to form solvent vapor, and the solvent vapor enters the condenser 4 to be condensed into liquid and is stored in the temporary storage tank 5; the solvent in the temporary storage tank 5 flows into the leaching liquid distribution pipe 8 through a pipeline, and the polluted soil in the soil leaching device 1 is leached; discharging the solvent containing the pollutants after the leaching into an evaporator 2, and evaporating the solvent into solvent steam again; along with the continuous evaporation of the solvent in the evaporator 2, the concentration of the pollutants is continuously improved, the solvent containing the pollutants with high concentration is discharged into the crystallization separator 3 from the bottom of the evaporator 2, the solvent is separated from the pollutants by crystallization, the solvent after the pollutants are separated is returned to the evaporator 2 again through the liquid return pump 7, no solvent is discharged, and the sustainable utilization of the solvent is realized; after one of the soil leaching devices 1 finishes leaching, the solvent in the temporary storage tank 5 is sent to the other soil leaching device filled with the polluted soil to be treated, so that the continuous treatment of the polluted soil by the whole device is realized; the leached soil is discharged into a discharging conveyor 6 from a discharge outlet at the bottom of a soil leaching device 1, a conveying auger drives the soil to be conveyed in the discharging conveyor 6, the soil is uniformly distributed in the discharging conveyor 6, then the conveying is stopped, the soil is heated by a heater 9, the solvent residual in the soil is evaporated, and the solvent steam enters a condenser through a steam collecting cover 10 to be condensed, so that the solvent is further recovered, and the solvent loss is greatly reduced; and after drying, opening an end cover of a discharge hole at the tail end of the discharging conveyor 6, and continuously conveying the soil to discharge the soil.
Claims (4)
1. A device for treating organic contaminated soil comprises a soil leaching device (1), an evaporator (2), a crystallization separator (3), a condenser (4), a temporary storage tank (5) and a discharging conveyor (6), and is characterized in that the soil leaching device (1) is provided with at least two parts, the bottom of the soil leaching device (1) is connected with the top of the evaporator (2) through a liquid discharge pipe, the bottom of the evaporator (2) is connected with the top of the crystallization separator (3) through the liquid discharge pipe, the side of the crystallization separator (3) is connected with the side of the evaporator (2) through a liquid return pipeline, the liquid return pipeline is provided with a liquid return pump (7), the top of the evaporator (2) is connected with a steam inlet of the condenser (4) through a steam pipeline, the liquid outlet of the condenser (4) is connected with the temporary storage tank (5) through a pipeline, and leaching liquid distribution pipes (8) are respectively arranged at the top in the soil leaching device (1), the inlet of drip washing liquid distribution pipe (8) is connected with the liquid outlet of jar (5) of keeping in through the pipeline respectively, discharge conveyor (6) are rectangle box conveyer, and inside is equipped with carries the auger, soil drip washing ware (1) bottom is located in discharge conveyor (6), and discharge conveyor (6) top feed inlet is connected with soil drip washing ware (1) bottom bin outlet, and the bin outlet is equipped with the relief valve, and discharge conveyor (6) bottom is equipped with heater (9), and discharge conveyor (6) top is equipped with a plurality of steam port along discharge conveyor (6) direction of delivery, and the steam port is equipped with collection vapour cover (10) respectively, and collection vapour cover (10) top is passed through the pipeline and is connected with condenser (4) steam inlet.
2. The apparatus for treating organically-polluted soil according to claim 1, wherein the top feed inlet of the soil washer (1) is provided with a soil feeder.
3. The apparatus for treating organically contaminated soil according to claim 1, characterized in that an agitator (11) is provided in the soil washer (1).
4. The apparatus for treating organically-polluted soil according to claim 1, 2 or 3, wherein the number of the soil washer (1) is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120966512.9U CN215236737U (en) | 2021-05-08 | 2021-05-08 | Device for treating organic contaminated soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120966512.9U CN215236737U (en) | 2021-05-08 | 2021-05-08 | Device for treating organic contaminated soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215236737U true CN215236737U (en) | 2021-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120966512.9U Active CN215236737U (en) | 2021-05-08 | 2021-05-08 | Device for treating organic contaminated soil |
Country Status (1)
| Country | Link |
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| CN (1) | CN215236737U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114871263A (en) * | 2022-04-29 | 2022-08-09 | 北京建工环境工程咨询有限责任公司 | Contaminated soil remediation device and soil remediation method |
-
2021
- 2021-05-08 CN CN202120966512.9U patent/CN215236737U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114871263A (en) * | 2022-04-29 | 2022-08-09 | 北京建工环境工程咨询有限责任公司 | Contaminated soil remediation device and soil remediation method |
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