CN103706621A - Device and method for ultrasonic strengthening remediation of organic pollution field soil - Google Patents
Device and method for ultrasonic strengthening remediation of organic pollution field soil Download PDFInfo
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- CN103706621A CN103706621A CN201310719488.9A CN201310719488A CN103706621A CN 103706621 A CN103706621 A CN 103706621A CN 201310719488 A CN201310719488 A CN 201310719488A CN 103706621 A CN103706621 A CN 103706621A
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- 239000002689 soil Substances 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000005067 remediation Methods 0.000 title abstract description 8
- 238000005728 strengthening Methods 0.000 title abstract 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 238000003756 stirring Methods 0.000 claims abstract description 15
- 239000010802 sludge Substances 0.000 claims abstract description 11
- 238000000926 separation method Methods 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 238000003860 storage Methods 0.000 claims description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 21
- 238000011109 contamination Methods 0.000 claims description 19
- 238000002604 ultrasonography Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 11
- 239000011259 mixed solution Substances 0.000 claims description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 238000007605 air drying Methods 0.000 claims description 2
- 230000018044 dehydration Effects 0.000 claims description 2
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- 239000003814 drug Substances 0.000 abstract 1
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- 239000002957 persistent organic pollutant Substances 0.000 abstract 1
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 16
- 238000005516 engineering process Methods 0.000 description 13
- 238000011084 recovery Methods 0.000 description 7
- 239000003344 environmental pollutant Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- PBKONEOXTCPAFI-UHFFFAOYSA-N 1,2,4-trichlorobenzene Chemical class ClC1=CC=C(Cl)C(Cl)=C1 PBKONEOXTCPAFI-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
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- 238000004458 analytical method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 150000004821 1,3-dichlorobenzenes Chemical class 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
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- 239000005416 organic matter Substances 0.000 description 2
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Abstract
The invention discloses a device and a method for ultrasonic strengthening remediation of organic pollution field soil and belongs to the field of remediation of pollution soil. The device comprises a water-soil mixing and soil crushing system, a high-speed stirring and ultrasonic strengthening reaction integration system and a soil-water separation system. The method comprises the following steps: in the water-soil mixing and soil crushing system, after a soil-water mixture obtained by fully mixing soil and water is crushed by the soil crushing device, the crushed soil-water mixture is fed into the integration system combining high-speed stirring with ultrasonic strengthening reaction; after uniformly stirring, ultrasonic wave is started; proper remediation medicament is manually added according to the type of pollution soil; the organic pollutants in the soil can be removed in the ultrasonic strengthening reaction integration system; after finishing the reaction, the mixture enters into the soil-water separation system through a sludge pump, and separated water can be recycled. By adopting the device, the automation of organic pollution soil treatment is achieved, the device can be applied to small industrial production, the labor investment is reduced, the production efficiency is greatly improved and the device is suitable for wide popularization and application.
Description
Technical field
The invention belongs to soil remediation apparatus field, particularly the Apparatus for () and method therefor of the ultrasound-enhanced reparation of a kind of organic contamination place soil.
Background technology
Soil is the important natural resources of human survival and development and the basis that whole terrestrial ecosystems are rely and existed, all extremely important for agricultural sustainable development and the mankind's existence.Report (IRRTC) according to UNEP (United Nations Environment Programme) nineteen ninety, approximately have every year hundred million tons of organic matter entered environments of 3-4, wherein major part has entered soil environment.Pollutant enters after soil, not only affects the inner variation of biota of growth and development of plants and soil and the conversion of material, causes grain yield and Quality Down, can cause secondary pollution to surface water, underground water etc.Pollutant also can pass through soil-plant system, and agricultural product security is constituted a serious threat; Through food chain, enter human body, harm population health.
The problem of China's soil pollution is also very serious, and cultivated land resource sustainable use and grain-production have been proposed safely to stern challenge.Such as, organo-chlorine pesticide has been forbidden nearly 20 years, and in soil, residual quantity reduces greatly, but recall rate is still very high.Along with urbanization and process of industrialization are accelerated, near city and industrial area, soil organic contamination also increasingly sharpens, and the environmental pollution improvement of these soil is very urgent with reparation.Because organic compound has higher soil-water partition coefficient, once enter after soil, its overwhelming majority accumulates in soil, not only difficult degradation, and toxicity is large, so countries in the world have all been dropped into the recovery technique research that a large amount of manpowers, financial resources are carried out orgnic compound pollution soil.
Organic polluted soil is prevalent in industrial pollution place, and the selection of this site remediation technology is not only subject to the impact of industrial contaminated sites feature, is also subject to the various factors such as politics, economy, society.Current, the contaminated site recovery technique of Chinese scholars extensive concern mainly comprises physics recovery technique, chemical recovery technique, phytoremediation technology and microorganism recovery technique etc.But be subject to the driving of urban land economic worth, recovery technique should have that repairing efficiency is short, economical rationality, secondary pollution risk is little, stability is high feature.
Ultrasonic wave-Zero-valent Iron the technology that belongs to chemical recovery technique category is a kind of deep oxidation technology that has prospect, is a kind of novel, clean purification techniques.Ultrasonic degradation technology integrates the multiple technologies such as high-level oxidation technology, burning, supercritical oxidation, have applicable wide, easy and simple to handle, without features such as (lacking) pollutions.Being particularly useful for degrading, toxicity is high, the organic matter of difficult degradation.
Current, there are some researches show rapidly and efficiently organic pollution in degrading waste water of ultrasonic wave/Zero-valent Iron method.And the equipmentization research of using ultrasound ripple/Zero-valent Iron method processing organic polluted soil has no report.The present invention utilizes ultrasonic wave/Zero-valent Iron technology to remove the organic pollution in contaminated soil, and the rapidly and efficiently equipment of renovation of organic pollution soil is manufactured in research.
Summary of the invention
1. the technical problem that invention will solve
The object of the invention is, the organic contamination place present situation and the demand that for current enterprise industrial relocation, cause, the invention provides the Apparatus for () and method therefor of the ultrasound-enhanced reparation of a kind of organic contamination place soil, this equipment has the ability of very fast degraded organic contaminants in soil, and stability is high, the features such as secondary pollution risk is little, and rehabilitation cost is relatively low.
2. technical scheme
The technical scheme that the technical problem to be solved in the present invention is taked is:
The equipment of the ultrasound-enhanced reparation of a kind of organic contamination place soil, comprise connected successively aqua storage tank, high-pressure hydraulic pump, bucket, valve, high-speed stirred grinder, sludge pump, device for separating mud and water and water circulating pipe, wherein aqua storage tank is connected with bucket by high-pressure hydraulic pump, between bucket and high-speed stirred grinder, be provided with valve, high-speed stirred grinder is connected with device for separating mud and water by sludge pump, ultrasonic wave vibration plate is arranged on the inner side of high-speed stirred grinder outer wall, ultrasonic wave vibration plate is connected with supersonic generator, aqua storage tank locates below ground level, the delivery port of device for separating mud and water is connected with aqua storage tank by water circulating pipe, water through device for separating mud and water separation can directly enter aqua storage tank by water circulating pipe.
The described ultrasonic wave vibration plate that is arranged on the inner side of high-speed stirred grinder outer wall, purchased from Shanghai He Qiao ultrasonic device Co., Ltd, ultrasonic wave rated power is 1200w, frequency is 28/40KHz, by supersonic generator, is controlled.
Described high-speed stirred grinder height overall 1800mm, installing whole internal diameter is 1200mm, wherein agitating device internal diameter is 700mm, around the sleeve surface of agitating device, is covered with the aperture that internal diameter is 10mm, rotating speed 0-900 rpm.
An equipment for the ultrasound-enhanced reparation of organic contamination place soil, also comprises automatic control device, for automatically control supersonic generator and high-speed stirred grinder unlatching, close.
Described ultrasonic wave vibration plate material is stainless steel, and device for separating mud and water material is polytetrafluoroethylene (PTFE) material.
Method for organic contamination place soil is: the soil of contaminated site is excavated out, put into bucket, by driven by motor, pulverize slurry soil is carried out to crushed work, by high-pressure hydraulic pump, the water in aqua storage tank is pumped in bucket, after soil is pulverized, open bucket bottom valve, muddy water mixed solution enters high-speed stirred grinder, by stirring motor, drive stirring arm in rotating shaft to carry out stirring operation, realizing muddy water fully mixes, open subsequently supersonic generator, ultrasonic wave brings into operation, the mode manually adding adds Zero-valent Iron in muddy water mixed solution, ultrasonic time 60-90 minute, ultrasonic power 1200W-3600W.The mud mixture of processing through ultrasonic wave-Zero-valent Iron, by sludge pump, pump into device for separating mud and water, water after Separation of Solid and Liquid enters aqua storage tank by circulating line, has realized can be recycled of water, and the mud after sludge-water separating system dehydration is natural air drying in the open.Organic pollution after ultrasonic wave-Zero-valent Iron is processed in soil meets relevant criterion.Fine grained soil through mud-water separation can be used as reclaiming or agricultural land soil, so far completes whole soil remediation process.
3. beneficial effect
The Apparatus for () and method therefor of the ultrasound-enhanced reparation of a kind of organic contamination of the present invention place soil, has realized the automation that contaminated soil chemistry is repaired, and can be applicable to industrial applications, reduces manually and drops into, and has greatly improved production efficiency.
Further, in the soil equipment of ultrasonic wave-Zero-valent Iron renovation of organic pollution of the present invention place, adopt throw-in type ultrasonic wave vibration plate that ultrasonic wave is provided, throw-in type ultrasonic wave vibration plate, consists of ultrasonic wave vibration plate and supersonic generator two parts, and ultrasonic wave vibration plate is arranged on the inner side of high-speed stirred reducing mechanism outer wall, model is VGT-1024, ultrasonic wave rated power is 1200w, and frequency is 28/40KHz, by supersonic generator, is controlled.Ultrasonic treatment unit material is stainless steel, and ultrasonic power and time are adjustable.The amount of the Zero-valent Iron of using in the present invention can or reduce consumption according to how many increases of pollutant in soil, thereby deployable various contrast test contributes to adjust in practice concrete processing scheme, reaches optimization process effect.
Ultrasonic degradation technology used in the present invention integrates the multiple technologies such as high-level oxidation technology, burning, supercritical oxidation, have applicable wide, easy and simple to handle, without features such as (lacking) pollutions.
Visible, the present invention is simple in structure, and handling process is reasonable, has realized the automation of soil remediation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the equipment of the ultrasound-enhanced reparation of a kind of organic contamination place soil.
Fig. 2 is high-speed stirred grinder structural representation.
On figure, be labeled as: 1 aqua storage tank, 2 high-pressure hydraulic pumps, 3 buckets, 4 valves, 5 high-speed stirred grinders, 6 sludge pumps, 7 device for separating mud and water, 8 ultrasonic wave vibration plates, 9 supersonic generators, 5-1 stirring motor, 5-2 rotating shaft, 5-3 stirrer paddle, 5-4 sleeve.
Fig. 3 is the clearance of chlorobenzene under different disposal condition in embodiment mono-.
Fig. 4 is in embodiment bis-1, the clearance of 3-dichloro-benzenes under different Zero-valent Iron consumptions.
Fig. 5 is the clearance of Isosorbide-5-Nitrae-dichloro-benzenes under different Zero-valent Iron consumptions in embodiment bis-.
Fig. 6 is in embodiment bis-1,2, the clearance of 4-trichloro-benzenes under different Zero-valent Iron consumptions.
The specific embodiment
As shown in Figure 1, the present invention relates to the equipment of the ultrasound-enhanced reparation of a kind of organic contamination place soil, comprise connected successively aqua storage tank 1, high-pressure hydraulic pump 2, bucket 3, valve 4, high-speed stirred grinder 5, sludge pump 6, device for separating mud and water 7 and water circulating pipe, wherein aqua storage tank 1 is connected with bucket 3 by high-pressure hydraulic pump 2, between bucket 3 and high-speed stirred grinder 5, be provided with valve 4, high-speed stirred grinder 5 is connected with device for separating mud and water 7 by sludge pump 6, ultrasonic wave vibration plate 8 is arranged on the inner side of high-speed stirred grinder 5 outer walls, ultrasonic wave vibration plate 8 is connected with supersonic generator 9, aqua storage tank 1 locates below ground level, the delivery port of device for separating mud and water 7 is connected with aqua storage tank 1 by circulating line, water through device for separating mud and water 7 separation can directly enter aqua storage tank 1 by water circulating pipe.The about 1800mm of described high-speed stirred grinder 5 height overall, installing whole internal diameter is 1200mm, wherein agitating device internal diameter is 700mm, its surface of sleeve around agitating device is covered with the aperture that internal diameter is about 10mm, each component names shown in Fig. 2: stirring motor 5-1, rotating shaft 5-2, stirrer paddle 5-3, sleeve 5-4.
Soil is put into bucket 3, soil reducing mechanism is pulverized soil, by high-pressure hydraulic pump 2, the water in aqua storage tank 1 is pumped into bucket 3(soil reducing mechanism) pulverize, after soil is pulverized, open bucket 3(soil reducing mechanism) bottom valve 4, muddy water mixed solution enters high-speed stirred pulverizer 5, by stirring motor 5-1, rotating shaft 5-2, after stirrer paddle 5-3 and sleeve 5-4 effect mix muddy water, open ultrasonic wave, manually in muddy water mixed solution, add Zero-valent Iron subsequently, after question response 90 minutes, muddy water mixed solution after processing is pumped into device for separating mud and water 7 by sludge pump 6, after mud-water separation water can enter aqua storage tank 1 by circulating line can be for recycling.Ultrasonic power and stir speed (S.S.) are adjustable, and ultrasonic treatment unit material is stainless steel, and device for separating mud and water is polytetrafluoroethylene (PTFE) material, and other parts are carbon steel material.Equipment also comprises automaton, can automatically control supersonic generator 9 and high-speed stirred grinder 5 unlatching, close.
Embodiment mono-:
Pilot experiment soil adopts artificially contaminated soil, gets top layer, farmland 20cm soil, then with the chlorobenzene solution of acetone solution, pollutes, and concentration is 150mgkg
-1.
Pilot experiment is divided into two processed group, and ultrasonic wave is processed and ultrasonic wave/Zero-valent Iron associated treatment separately, and every group of soil consumption is 50kg, and soil ratio is 3:1, and ultrasonic wave/Zero-valent Iron processed group Zero-valent Iron consumption is 100g.Pilot plant operational factor is: ultrasonic power is 1200W, and stir speed (S.S.) is 300r/min, and ultrasonic treatment time is 90min.Adopt automaton control ultrasonic wave operation and stir running time, setting ultrasonic unit and agitating device running time is 90min, reach operation total time after equipment automatically stop.After end of run, gather mud shape sample, chlorobenzene content in the soil after analyzing and processing.
Fig. 3 has provided the removal effect of chlorobenzene under different disposal condition, and result shows that independent ultrasonic wave processes after 90min in soil chlorobenzene content by 150mgkg
-1be down to 2.23mgkg
-1, clearance is 98%, and ultrasonic wave/Zero-valent Iron is processed after chlorobenzene contaminated soil 90min, and pedotheque does not detect chlorobenzene, illustrates that ultrasonic wave/Zero-valent Iron United Technologies can realize the quick removal of chlorobenzene.
Embodiment bis-:
Experiment soil is taken from certain insecticide factory's contaminated site soil.
Under the condition of ultrasonic wave/Zero-valent Iron associated treatment, for probing into the impact of Zero-valent Iron consumption on pollutant in soil removal efficiency, 3 groups of experiments are set, Zero-valent Iron consumption is respectively: 300g, 600g and 900g.Every group of experiment soil consumption is 50kg, and soil ratio is 3:1.Pilot plant operational factor is respectively: ultrasonic power is 1200W, 2400W, 3600W, and stir speed (S.S.) is 300r/min, and ultrasonic treatment time is 60min, 75min, 90min.Adopt automaton control ultrasonic wave operation and stir running time, set ultrasonic unit and agitating device running time, automatically start ultrasonic unit and agitating device, reach operation total time after equipment automatically stop.After mud-water separation, gather mud shape sample analysis soil treatment after stain thing content, the major pollutants of analysis are 1,3-dichloro-benzenes, Isosorbide-5-Nitrae-dichloro-benzenes and 1,2,4-trichloro-benzenes.
Analysis result shows, 1,2,4-trichloro-benzenes does not all detect, and Fig. 6 is the removal effect of 1,2,4-trichloro-benzenes under different Zero-valent Iron consumption conditions, can find out that 1,2,4-trichloro-benzenes removes substantially completely.Fig. 4, Fig. 5 has provided under different Zero-valent Iron consumption conditions 1, the clearance of 3-dichloro-benzenes, Isosorbide-5-Nitrae-dichloro-benzenes.Result shows, when Zero-valent Iron consumption is 600g, the highest to the clearance of this place pollutant in soil, reaches 65%.Therefore, this equipment has good removal effect to 1,3-dichloro-benzenes, Isosorbide-5-Nitrae-dichloro-benzenes and 1,2,4-trichloro-benzenes contaminated soil.
In addition to the implementation, this equipment also can have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection domain of requirement of the present invention.
Claims (9)
1. the equipment of the ultrasound-enhanced reparation of an organic contamination place soil, it is characterized in that: comprise connected successively aqua storage tank (1), high-pressure hydraulic pump (2), bucket (3), valve (4), high-speed stirred grinder (5), sludge pump (6), device for separating mud and water (7) and water circulating pipe, wherein aqua storage tank (1) is connected with bucket (3) by high-pressure hydraulic pump (2), between bucket (3) and high-speed stirred grinder (5), be provided with valve (4), high-speed stirred grinder (5) is connected with device for separating mud and water (7) by sludge pump (6), ultrasonic wave vibration plate (8) is arranged on the inner side of high-speed stirred grinder (5) outer wall, ultrasonic wave vibration plate (8) is connected with supersonic generator (9), the delivery port of device for separating mud and water (7) is connected with aqua storage tank (1) by water circulating pipe, the water separated through device for separating mud and water (7) can directly enter aqua storage tank (1) by water circulating pipe.
2. the equipment of the ultrasound-enhanced reparation of organic contamination according to claim 1 place soil, is characterized in that: described aqua storage tank (1) locates below ground level.
3. the equipment of the ultrasound-enhanced reparation of organic contamination according to claim 1 place soil, it is characterized in that: described in be arranged on the ultrasonic wave vibration plate (8) of the inner side of high-speed stirred grinder (5) outer wall, ultrasonic wave rated power is 1200w, frequency is 28/40KHz, by supersonic generator (9), is controlled.
4. the equipment of the ultrasound-enhanced reparation of organic contamination according to claim 1 place soil, it is characterized in that: described high-speed stirred grinder (5) height overall 1800mm, installing whole internal diameter is 1200mm, wherein agitating device internal diameter is 700mm, sleeve surface around agitating device is covered with the aperture that internal diameter is 10mm, rotating speed 0-900 rpm.
5. the equipment of the ultrasound-enhanced reparation of organic contamination according to claim 1 place soil, is characterized in that: also comprise automaton, for automatically control supersonic generator (9) and high-speed stirred grinder (5) unlatching, close.
6. according to the prosthetic appliance of the organic contamination place soil described in any one in claim 1-5, it is characterized in that: described ultrasonic wave vibration plate (8) material is stainless steel, device for separating mud and water (7) material is polytetrafluoroethylene (PTFE) material.
7. according to the equipment of the ultrasound-enhanced reparation of organic contamination place soil described in any one in claim 1-6, method for organic contamination place soil is: contaminated soil is put into bucket (3), by driven by motor, pulverize slurry soil is carried out to crushed work, by high-pressure hydraulic pump (2), the water in aqua storage tank (1) is pumped in bucket (3), after soil is pulverized, open bucket bottom valve (4), muddy water mixed solution enters high-speed stirred grinder (5), by stirring motor, drive stirring arm in rotating shaft to carry out stirring operation, realizing muddy water fully mixes, open subsequently supersonic generator (9), ultrasonic wave brings into operation, ultrasonic time 60-90 minute, ultrasonic power 1200W-3600W, the mud mixture of processing through ultrasonic wave-Zero-valent Iron, by sludge pump (6), pump into device for separating mud and water (7), water after Separation of Solid and Liquid enters aqua storage tank (1) by circulating line, realized can be recycled of water, the mud after sludge-water separating system dehydration is natural air drying in the open.
8. method according to claim 7, is characterized in that, when described ultrasonic wave brings into operation, in muddy water mixed solution, adds Zero-valent Iron.
9. method according to claim 7, is characterized in that, in described muddy water mixed solution, water and soil mass ratio is 3:1.
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| CN105217909B (en) * | 2015-10-29 | 2017-10-20 | 南京大学 | The method of cyanide in ultrasonic wave added Zero-valent Iron, hydrogen peroxide degraded mud |
| CN107649507A (en) * | 2017-11-15 | 2018-02-02 | 广西综改咨询服务有限公司 | A kind of contaminated soil controlling device |
| CN108356067A (en) * | 2018-05-15 | 2018-08-03 | 中国矿业大学 | A method of repairing coke-oven plant's contaminated soil using coke powder adsorption-mineral floating |
| CN108580543A (en) * | 2018-06-28 | 2018-09-28 | 四川省天晟源环保股份有限公司 | A kind of new-type mortar reactor and its operating method for soil remediation |
| CN114160557A (en) * | 2021-11-12 | 2022-03-11 | 中石化石油工程技术服务有限公司 | Tubular ultrasonic treatment device and treatment method for petroleum-polluted soil |
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