CN202192081U - Experimental device for removing pollutants in soil - Google Patents
Experimental device for removing pollutants in soil Download PDFInfo
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- CN202192081U CN202192081U CN2011203048752U CN201120304875U CN202192081U CN 202192081 U CN202192081 U CN 202192081U CN 2011203048752 U CN2011203048752 U CN 2011203048752U CN 201120304875 U CN201120304875 U CN 201120304875U CN 202192081 U CN202192081 U CN 202192081U
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- leacheate
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- drip washing
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Abstract
The utility model relates to the technology for treating soil polluted by petroleum and PAHs (polycyclic aromatic hydrocarbons), in particular to an experimental device for removing pollutants in soil. A discharged liquid storage tank, a plurality of leaching columns and a leacheate storage tank are connected sequentially, the discharged liquid storage tank is communicated with a liquid storage bottle through a liquid discharging pipe, the leacheate storage tank is communicated with a peristaltic pump through a liquid inlet pipe, the peristaltic pump is capable of controlling the leaching columns to simultaneously conduct a leaching experiment, and leacheate moves from bottom to top. By the aid of the experimental device, the concentration of the pollutants in discharged liquid can be monitored at any time according to experimental requirements, and the input and output flow rates of the leacheate can be regulated at any time. The experimental device can be applied to experimental research, and can provide theoretical and technical parameters for treatment engineering in a practical scale.
Description
Technical field
The utility model relates to oil and PAHs contaminated soil treatment technology, specifically a kind of experimental provision of removing pollutant in soil.
Background technology
Strong toxicity, difficult degradation, residence time are grown, widespread pollutant is preferentially controlled in environment, is called priority pollutant.EPA (USEPA) has announced 129 kinds of priority pollutants earlier in 1976 annual rates.China also proposes first batch of 68 kinds of chemical pollutants on the basis of studying be priority pollutant.Because its low aqueous solubility and the characteristic of strong adsorption on soil particle, fluorenes, naphthalene, anthracene, 16 kinds of PAHs such as benzo [a] pyrene are classified as priority pollutants by American National Environmental Protection Agency (EPA), Europe then 6 kinds of PAH such as fluoranthene, benzo (a) pyrenes as target P AHs.The Chinese government has also listed 7 kinds of polycyclic aromatic hydrocarbons in " Chinese environmental priority pollutant blacklist ".Countries in the world to polycyclic aromatic hydrocarbon in environment distribution and all given great attention to the potential threat that human health exists.
Polycyclic aromatic hydrocarbon is stable in properties in environment, and top layer that mainly is enriched in soil and time top layer are difficult for taking place migration and transform, and easily with soil in organic matter combines, this makes the trend that PAHs has enrichment gradually on the top layer and the inferior top layer of soil.Therefore, need a kind of restorative procedure fast and effectively to repair polycyclic aromatic hydrocarbon pollution.
The behavior of polycyclic aromatic hydrocarbon in environment is basic identical, but the physicochemical property of various polycyclic aromatic hydrocarbons has nothing in common with each other, and this mainly is that difference owing to their structure and molecular weight causes.Except the hydrogenated derivatives of a few polycyclic aromatic hydrocarbon, all polycyclic aromatic hydrocarbons all exist with solid-state form at normal temperatures, and volatility is very little, want high with the boiling point of comparing them with the normal paraffins of carbon number.Usually, the water-soluble and volatility of PAHs increasing and reduce or reduce with phenyl ring quantity.BaP is a kind of typical PAHs compound, and is water insoluble, but is soluble in organic solvents such as benzene, chloroform, carrene.The easy biodegradation of polycyclic aromatic hydrocarbon of low ring, the above polycyclic aromatic hydrocarbon in Fourth Ring but is difficult to degraded by biology, so must consider other removal method except that biodegradation to this pollutant.
Other removal methods of this pollutant also have physics and chemical repair method.
The physics restorative procedure mainly comprises soil replacement method, hot repairing method, electric repairing method and excavates landfill method etc.It is to utilize the chemical renovation agent that joins in the soil with pollutant certain chemical reaction to take place that chemistry is repaired, and pollutant is degraded and recovery technique that toxicity is lowered.Chemical cleaning method is a kind of important chemical repairing method, and it is meant uses some chemical solvent, cleans contaminated soil like surfactant, organic solvent etc., and pollutant wash-out from soil is separated, and makes that contaminated soil is able to repair.The chemistry burning method also is a common chemical improvement method, because organic matter at high temperature decomposes easily, removes the purpose of polluting so at high temperature burn to reach.But high temperature incineration can destroy the physicochemical property of soil again, and soil can't be utilized again.
Usually when adopting the biological restoration method can not satisfy the needs of contaminated soil reparation, can select chemical repair method according to pollutant type and soil characteristic.With respect to other contaminated soil restorative procedures, the chemical repair method development is morning, and ripe relatively.From broad sense, the soil elution method is meant the process of removing soil pollutant with fluid (normally liquid), can carry out original position reparation (in-situ) and dystopy reparation (ex-situ).The pollutant of removing can be inorganic pollution or organic pollution.Water, chemical solvent or other maybe be the pollutant fluids that drip washing is come out from soil, even gas also can be used as eluent.The soil elution method is the mode through water filling, the pollutant that contains in the medium of flushing soil aperture, and make flushing current inflow place Xia Shui, make contaminated soil obtain repairing thereby reclaim the flushing current then.
The soil elution method has multiple operation form, therefore different sorting techniques can be arranged.
Whether the position of handling soil according to the soil elution method changes can be divided into original position elution method and dystopy elution method; Original position drip washing reparation is meant the depth according to pollutant distribution; Make the eluent contaminated soil of under the effect of gravity or external force, flowing through, and utilize recovery well or adopt the way of ditching to collect and remove eluent.
Compare with other soil remediation methods, the equipment of soil elution method is simple, and operating personnel can not direct contact stain thing.The soil elution method is higher to the clearance of pollutant in soil, and can effectively limit the diffusion of bazardous waste, has a wide range of applications.The soil elution method relatively is suitable for the processing of high-load contaminated soil, and the present invention has studied a kind of high-load organic polluted soil leaching that is used for and removed experimental provision and method.
The utility model content
The purpose of the utility model provides a kind of experimental provision of removing pollutant in soil.
For realizing above-mentioned purpose, the technical scheme that the utility model adopts is:
A kind of experimental provision of removing pollutant in soil; Comprise drip washing post, relief liquor accumulator tank and leacheate accumulator tank; Said relief liquor accumulator tank, drip washing post and leacheate accumulator tank link to each other successively; The relief liquor accumulator tank is communicated with liquid storage bottle through discharging tube, and the leacheate accumulator tank is communicated with peristaltic pump through feed tube.
One end and the leacheate accumulator tank of said drip washing post are tightly connected; Wherein be provided with the dividing plate that is used to place contaminated soil between leacheate accumulator tank and the drip washing post lower end; Be inserted with a plurality of leacheate entry switches on the said leacheate accumulator tank; One end of each leacheate entry switch is communicated with peristaltic pump through feed tube, and the other end passes, is provided with diffusion tip by dividing plate.
Diffusion tip is positioned at the inside of drip washing post, carries leacheate to contaminated soil.The other end of said drip washing post and relief liquor accumulator tank are tightly connected, and are inserted with a plurality of tapping valves on the said relief liquor accumulator tank, an end of each tapping valve and relief liquor accumulator tank internal communication, and the other end is communicated with liquid storage bottle through discharging tube.The shape of said relief liquor accumulator tank and leacheate accumulator tank is identical, is cylindrical.Said leacheate flow velocity is 0.001ml/min-2000ml/min.
The utlity model has following advantage:
1. the utility model is simple in structure, applicable performance is strong.Can use as laboratory simulation dystopy washed off soil.The utility model device makes contaminated soil drip washing process parameter optimizing, can realize PAHs contaminated soil drip washing technical applicationization.Optimal conditions shows:
The research of laboratory dystopy drip washing experimental technique can be provided.
Can guarantee the environment temperature of drip washing experiment, breadboard air-conditioning scalable temperature.
The utility model comprises that more large-scale cylinder 36cm-70cm is high, and the peristaltic pump of configuration can be controlled the flow velocity of leacheate, can control a plurality of drip washing posts and experimentize.
The leacheate accumulator tank is provided with 3 leacheate entry switches, can while or 3 kinds of different leacheates of gap input.The leacheate entry switch is generally opened, and when stopping that certain leacheate gets into or relief liquor when being full of, can close peristaltic pump or close corresponding entry switch.This structure conveniently experimentizes and also can prevent surrounding environment is caused secondary pollution.
2. the utility model elution device is handled the oil and the PAH s contaminated soil efficient height of high-load.Adopt the utility model processing method and device can handle certain contaminated site soil, also can handle the organic polluted soil of autogamy.Diesel oil content is 22623mg/kg in soil; When wherein polycyclic aromatic hydrocarbon content is 187.84mg/kg; With the continuous drip washing of mixed surfactant that contains 3 of 0.5%NaCl: 1LAS: APG; When eluent: when soil (v/w) was 5: 1, diesel oil and polycyclic aromatic hydrocarbon clearance can reach 70.23%, 45.86% in the soil.Explain that this ELUTION METHOD has good removal effect.
Description of drawings
The experimental provision structural representation of the removal pollutant in soil that Fig. 1 provides for the utility model embodiment.(wherein, 1. relief liquor accumulator tank, 2. leacheate accumulator tank, 3. drip washing post, 4. dividing plate, 5. leacheate entry switch, 6. feed tube, 7. peristaltic pump, 8. diffusion tip, 9. tapping valve, 10 discharging tubes, 11. liquid storage bottles)
Diffusion tip sketch map in the experimental provision of the removal pollutant in soil that Fig. 2 provides for the utility model embodiment.
Relief liquor accumulator tank sketch map in the experimental provision of the removal pollutant in soil that Fig. 3 provides for the utility model embodiment.
Leacheate accumulator tank sketch map in the experimental provision of the removal pollutant in soil that Fig. 4 provides for the utility model embodiment.
In the experimental provision of the removal pollutant in soil that Fig. 5 provides for the utility model embodiment the drip washing post respectively with relief liquor accumulator tank and leacheate accumulator tank sealing and connecting device sketch map.
The specific embodiment
Below in conjunction with embodiment the utility model is done further explain.
As shown in Figure 1; Drip washing post 3 adopts pmma material to process; The centre is a hollow cylindrical structure; The two ends of drip washing post 3 are tightly connected through ring flange and relief liquor accumulator tank 1 and leacheate accumulator tank 2 respectively, wherein are provided with the dividing plate 4 that is used to place contaminated soil between leacheate accumulator tank 2 and drip washing post 3 lower ends.Be inserted with a plurality of leacheate entry switches 5 on the said leacheate accumulator tank 2, an end of each leacheate entry switch 5 is communicated with peristaltic pump 7 through feed tube 6, and the other end passes, is provided with diffusion tip 8 by dividing plate 4.Diffusion tip 8 is positioned at the inside of drip washing post 3, carries leacheate to contaminated soil.Be inserted with a plurality of tapping valves 9 on the said relief liquor accumulator tank 1, an end of each tapping valve 9 and relief liquor accumulator tank 1 internal communication, the other end is communicated with liquid storage bottle 11 through discharging tube 10.The shape of relief liquor accumulator tank 1 and leacheate accumulator tank 2 is identical, is cylindrical, a columniform end opening, is provided with and drip washing post 3 flange connecting dishes.
Said liquid storage bottle is used for glass container (2500-5000ml) supplies to store the drip washing relief liquor.Said peristaltic pump is outstanding permanent board BT-600E type, said 4 diffusion tip bottom bases big (diameter 5cm), and upper diameter diminishes gradually, and base is placed in (referring to 2) on the dividing plate.3 diffusion tip central authorities that place dividing plate triangular in shape, the lower vertical of diffusion tip is soaked in the leacheate accumulator tank, is convenient to draw leacheate.The diffusion tip on top divides 2 layers, and all 3mm designs 1 slit, slit width 1mm at interval.
Claims (7)
1. experimental provision of removing pollutant in soil; Comprise drip washing post, relief liquor accumulator tank and leacheate accumulator tank; It is characterized in that: said relief liquor accumulator tank (1), drip washing post (3) and leacheate accumulator tank (2) link to each other successively; Relief liquor accumulator tank (1) is communicated with liquid storage bottle (11) through discharging tube (10), and leacheate accumulator tank (2) is communicated with peristaltic pump (7) through feed tube (6).
2. press the experimental provision of the described removal pollutant in soil of claim 1; It is characterized in that: an end of said drip washing post (3) and leacheate accumulator tank (2) are tightly connected; Wherein be provided with the dividing plate (4) that is used to place contaminated soil between leacheate accumulator tank (2) and drip washing post (3) lower end; Be inserted with a plurality of leacheate entry switches (5) on the said leacheate accumulator tank (2); One end of each leacheate entry switch (5) is communicated with peristaltic pump (7) through feed tube (6), and the other end passes, is provided with diffusion tip (8) by dividing plate (4).
3. by the experimental provision of the described removal pollutant in soil of claim 2, it is characterized in that: diffusion tip (8) is positioned at the inside of drip washing post (3), carries leacheate to contaminated soil.
4. by the experimental provision of the described removal pollutant in soil of claim 1, it is characterized in that: the other end of said drip washing post (3) and relief liquor accumulator tank (1) are tightly connected.
5. press the experimental provision of the described removal pollutant in soil of claim 4; It is characterized in that: be inserted with a plurality of tapping valves (9) on the said relief liquor accumulator tank (1); One end of each tapping valve (9) and relief liquor accumulator tank (1) internal communication, the other end is communicated with liquid storage bottle (11) through discharging tube (10).
6. by the experimental provision of claim 2 or 4 described removal pollutant in soil, it is characterized in that: the shape of said relief liquor accumulator tank (1) and leacheate accumulator tank (2) is identical, is cylindrical.
7. by the experimental provision of the described removal pollutant in soil of claim 6, it is characterized in that: said leacheate flow velocity is 0.001ml/min-2000ml/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203048752U CN202192081U (en) | 2011-08-19 | 2011-08-19 | Experimental device for removing pollutants in soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203048752U CN202192081U (en) | 2011-08-19 | 2011-08-19 | Experimental device for removing pollutants in soil |
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| Publication Number | Publication Date |
|---|---|
| CN202192081U true CN202192081U (en) | 2012-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011203048752U Expired - Fee Related CN202192081U (en) | 2011-08-19 | 2011-08-19 | Experimental device for removing pollutants in soil |
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| CN (1) | CN202192081U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102950148A (en) * | 2011-08-19 | 2013-03-06 | 中国科学院沈阳应用生态研究所 | Experiment apparatus for removing pollutants from soil, and method thereof |
| CN104259197A (en) * | 2014-08-26 | 2015-01-07 | 中国海洋大学 | Soil pollution repairing condition regulating device |
| CN108994061A (en) * | 2018-09-14 | 2018-12-14 | 北京水木星源环保科技有限公司 | A kind of soil-repairing agent and soil remediation method |
| CN111014282A (en) * | 2019-12-31 | 2020-04-17 | 西安石油大学 | Deep petroleum polluted soil simulation restoration device and application |
-
2011
- 2011-08-19 CN CN2011203048752U patent/CN202192081U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102950148A (en) * | 2011-08-19 | 2013-03-06 | 中国科学院沈阳应用生态研究所 | Experiment apparatus for removing pollutants from soil, and method thereof |
| CN104259197A (en) * | 2014-08-26 | 2015-01-07 | 中国海洋大学 | Soil pollution repairing condition regulating device |
| CN108994061A (en) * | 2018-09-14 | 2018-12-14 | 北京水木星源环保科技有限公司 | A kind of soil-repairing agent and soil remediation method |
| CN111014282A (en) * | 2019-12-31 | 2020-04-17 | 西安石油大学 | Deep petroleum polluted soil simulation restoration device and application |
| CN111014282B (en) * | 2019-12-31 | 2021-09-03 | 西安石油大学 | Deep petroleum polluted soil simulation restoration device and application |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120418 Termination date: 20120819 |