CN103706621B - A kind of device and method thereof of the ultrasound-enhanced reparation of organic contamination place soil - Google Patents
A kind of device and method thereof of the ultrasound-enhanced reparation of organic contamination place soil Download PDFInfo
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- CN103706621B CN103706621B CN201310719488.9A CN201310719488A CN103706621B CN 103706621 B CN103706621 B CN 103706621B CN 201310719488 A CN201310719488 A CN 201310719488A CN 103706621 B CN103706621 B CN 103706621B
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Abstract
The invention discloses a kind of device and method thereof of the ultrasound-enhanced reparation of organic contamination place soil, belong to contaminated soil remediation field.The equipment includes：Water and soil is mixed reacts integrated system and sludge-water separating system with soil crushing system, high-speed stirred with intensified by ultrasonic wave.Its method is, in water and soil mixing and soil crushing system, soil reacts and integral integrated system with the well-mixed mud mixture of water after the crushing of soil reducing mechanism into collection high-speed stirred and intensified by ultrasonic wave, after stirring, open ultrasonic wave, according to contaminated soil type, it is artificial to add suitable reparation medicament, organic pollution in soil can be removed in intensified by ultrasonic wave reaction system, after completion of the reaction, sludge-water separating system is entered by sludge pump, the water after separation can be recycled.This equipment realizes the automation of organic polluted soil processing, can be applied to the production of back yard industry metaplasia, reduces artificial input, substantially increase production efficiency, suitable for wide popularization and application.
Description
Technical field
The invention belongs to soil remediation equipment field, a kind of more particularly to ultrasound-enhanced reparation of organic contamination place soil
Device and method thereof.
Background technology
Soil is human survival relies the basis of presence with the important natural resources and whole terrestrial ecosystems of development, right
It is all extremely important in the existence of agricultural sustainable development and the mankind.Reported according to UNEP (United Nations Environment Programme) nineteen nineties
(IRRTC) hundred million tons of organic matters of 3-4, are there are about every year and enter environment, and wherein most enters soil environment.Pollutant enters soil
Afterwards, the not only change of influence growth and development of plants and soil Internal biological group and the conversion of material, causes grain yield and quality
Decline, secondary pollution can be caused to surface water, underground water etc..Pollutant can also be by soil-plant system, to agricultural product security
Constitute a serious threat；Enter human body through food chain, endanger population health.
The problem of China's soil pollution, is also very serious, and cultivated land resource sustainable use and grain-production are proposed safely sternly
High challenge.Such as, organo-chlorine pesticide has been disabled nearly 20 years, and residual quantity has been substantially reduced in soil, but recall rate is still very high.With
Urbanization and process of industrialization is accelerated, city and industrial area soil organic contamination nearby also increasingly sharpen, the ring of these soil
Border pollution control is very urgent with repairing.Because organic compound has higher soil-water partition coefficient, once into soil
Afterwards, its overwhelming majority is accumulated in soil, not only difficult degradation, and toxicity is big, so, countries in the world have all put into a large amount of people
Power, financial resources carry out the recovery technique research of orgnic compound pollution soil.
Organic polluted soil is prevalent in industrial pollution place, and the selection of the site remediation technology is not only by industrial field
The influence of ground contamination feature, is also influenceed by many factors such as politics, economy, societies.Currently, domestic and foreign scholars extensive concern
Contaminated site recovery technique mainly includes peripheral doses technology, chemical remediation technology, phytoremediation technology and microorganism remediation skill
Art etc..But driven by urban land economic value, recovery technique should have short repairing efficiency, economical rationality, secondary pollution
The characteristics of risk is small, stability is high.
Ultrasonic wave-the zero-valent iron technology for belonging to chemical remediation technology category is a kind of advanced oxidation processes of great prospect,
It is a kind of new, cleaning purification techniques.Ultrasonic degradation technology collection high-level oxidation technology, burning, supercritical oxidation etc. are a variety of
Technology, be applicable it is wide, easy to operate, without it is (few) pollute the features such as.The degraded toxicity that is particularly suitable for use in is high, difficult degradation
Organic matter.
Currently, there are some researches show ultrasonic wave/Zero-valent Iron method can rapidly and efficiently organic pollution in degrading waste water.And answer
Report is had no with the equipmentization research of ultrasonic wave/Zero-valent Iron method processing organic polluted soil.The present invention utilizes ultrasonic wave/zeroth order
Iron technology removes the organic pollution in contaminated soil, research manufacture can rapidly and efficiently renovation of organic pollution soil equipment.
The content of the invention
1. the invention technical problem to be solved
The purpose of the present invention is, for organic contamination place present situation and demand, this hair caused by current enterprise's industrial relocation
The bright device and method thereof for providing a kind of ultrasound-enhanced reparation of organic contamination place soil, the equipment has in very fast degraded soil
The ability of organic pollution, and stability is high, and secondary pollution risk is small, the features such as rehabilitation cost is relatively low.
2. technical scheme
The technical problem to be solved in the present invention is adopted the technical scheme that：
A kind of equipment of the ultrasound-enhanced reparation of organic contamination place soil, including be sequentially connected 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 pass through water under high pressure
Pump is connected with bucket, and valve is provided between bucket and high-speed stirred grinder, and high-speed stirred grinder passes through sludge pump and mud
Water separation device is connected, and ultrasonic wave vibration plate is arranged on the inner side of high-speed stirred grinder outer wall, and ultrasonic wave vibration plate is sent out with ultrasonic wave
Raw device is connected, and aqua storage tank is located below ground level, and the delivery port of device for separating mud and water is connected by water circulating pipe with aqua storage tank,
The aqueous phase separated by device for separating mud and water directly can enter aqua storage tank by water circulating pipe.
The ultrasonic wave vibration plate of the inner side installed in high-speed stirred grinder outer wall, has purchased from Shanghai and tall ultrasonic device
Limit company, ultrasonic wave rated power is 1200w, and frequency is 28/40KHz, by supersonic generator control.
The total high 1800mm of the high-speed stirred grinder, device entirety internal diameter is 1200mm, and wherein agitating device internal diameter is
700mm, is covered with the aperture that internal diameter is 10mm, 0-900 rpms of rotating speed around the sleeve surface of agitating device.
A kind of equipment of the ultrasound-enhanced reparation of organic contamination place soil, in addition to automatic control device, for automatic
Control the unlatching of supersonic generator and high-speed stirred grinder, close.
The 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, is put into bucket, by electricity
Machine, which drives, crushes slurry to soil progress crushed work, the water in aqua storage tank is pumped into bucket by high-pressure hydraulic pump, soil is crushed
Afterwards, bucket bottom valve is opened, muddy water mixed solution enters high-speed stirred grinder, drives stirring slurry in rotating shaft to enter by stirring motor
Row stirring operation, realizes that muddy water is sufficiently mixed, and later on supersonic generator, ultrasonic wave brings into operation, the side manually added
Formula adds Zero-valent Iron, ultrasonic time 60-90 minutes, ultrasonic power 1200W-3600W into muddy water mixed solution.By ultrasound
The mud mixture of ripple-Zero-valent Iron processing, the aqueous phase being pumped into by sludge pump after device for separating mud and water, separation of solid and liquid passes through circulation pipe
Road enters aqua storage tank, realizes can be recycled for water, and the mud after being dehydrated through sludge-water separating system can be in outdoor natural air drying.Through
Cross the organic pollution after ultrasonic wave-Zero-valent Iron processing in soil and meet relevant criterion.Fine grained soil through mud-water separation can
As reclaiming or agricultural land soil, so far whole soil remediation process is completed.
3. beneficial effect
A kind of device and method thereof of the ultrasound-enhanced reparation of organic contamination place soil of the invention, realize contaminated soil
The automation repaired is learned, industrial applications are can be applied to, artificial input is reduced, substantially increases production efficiency.
Further, in ultrasonic wave of the present invention-Zero-valent Iron renovation of organic pollution place soil equipment, using throw-in type ultrasound
Ripple vibration plate provides ultrasonic wave, and throw-in type ultrasonic wave vibration plate is made up of, ultrasonic wave ultrasonic wave vibration plate with supersonic generator two parts
Vibration plate is arranged on the inner side of high-speed stirred reducing mechanism outer wall, model VGT-1024, and ultrasonic wave rated power is 1200w, frequency
Rate is 28/40KHz, by supersonic generator control.Ultrasonic treatment unit material is stainless steel, and ultrasonic power is timely
Between it is adjustable.The amount of Zero-valent Iron used in the present invention can increase or decrease consumption according to the number of pollutant in soil, so that
Deployable various contrast test, helps to adjust specific processing scheme in practice, reaches optimization process effect.
The multiple technologies such as ultrasonic degradation technology collection high-level oxidation technology used in the present invention, burning, supercritical oxidation
, the features such as pollution (few) with applicable wide, easy to operate, nothing.
It can be seen that, the present invention is simple in construction, and handling process rationally, realizes the automation of soil remediation.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the equipment of the ultrasound-enhanced reparation of organic contamination place soil.
Fig. 2 is high-speed stirred grinder structural representation.
It is labeled as on figure：1 aqua storage tank, 2 high-pressure hydraulic pumps, 3 buckets, 4 valves, 5 high-speed stirred grinders, 6 sludge pumps, 7 mud
Water separation device, 8 ultrasonic wave vibration plates, 9 supersonic generators, 5-1 stirring motors, 5-2 rotating shafts, 5-3 stirrer paddles, 5-4 sleeves.
Fig. 3 is clearance of the chlorobenzene under the conditions of different disposal in embodiment one.
Fig. 4 is clearance of the 1,3- dichloro-benzenes under different Zero-valent Iron consumptions in embodiment two.
Fig. 5 is clearance of the 1,4- dichloro-benzenes under different Zero-valent Iron consumptions in embodiment two.
Fig. 6 is clearance of the 1,2,4- trichloro-benzenes under different Zero-valent Iron consumptions in embodiment two.
Embodiment
As shown in figure 1, the present invention relates to a kind of equipment of the ultrasound-enhanced reparation of organic contamination place soil, including phase 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 even is followed
Endless tube road, wherein aqua storage tank 1 are connected by high-pressure hydraulic pump 2 with bucket 3, and valve is provided between bucket 3 and high-speed stirred grinder 5
Door 4, high-speed stirred grinder 5 is connected by sludge pump 6 with device for separating mud and water 7, and ultrasonic wave vibration plate 8 is arranged on high-speed stirring breading
The inner side of the outer wall of millstone 5, ultrasonic wave vibration plate 8 is connected with supersonic generator 9, and aqua storage tank 1 locates below ground level, mud-water separation
The delivery port of device 7 is connected by circulating line with aqua storage tank 1, and the aqueous phase separated by device for separating mud and water 7 can directly pass through
Water circulating pipe enters aqua storage tank 1.The total high about 1800mm of the high-speed stirred grinder 5, device entirety internal diameter is 1200mm, its
Middle agitating device internal diameter is 700mm, and around the sleeve of agitating device, its surface is covered with institute in the aperture that internal diameter is about 10mm, Fig. 2
Show each component names：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 crushed to soil, by high-pressure hydraulic pump 2 in aqua storage tank 1
Water be pumped into bucket 3（Soil reducing mechanism）Crush, after soil is crushed, open bucket 3（Soil reducing mechanism）Bottom valve 4,
Muddy water mixed solution enters high-speed stirred pulverizer 5, is made by stirring motor 5-1, rotating shaft 5-2, stirrer paddle 5-3 and sleeve 5-4
After muddy water is well mixed, ultrasonic wave is opened, Zero-valent Iron, question response 90 minutes are manually then added into muddy water mixed solution
Afterwards, the muddy water mixed solution after processing is pumped into aqueous phase after device for separating mud and water 7, mud-water separation by sludge pump 6 can be by following
Endless tube road is available for recycling into aqua storage tank 1.Ultrasonic power and stir speed (S.S.) are adjustable, and ultrasonic treatment unit material is not
Rust steel matter, device for separating mud and water is polytetrafluoroethylene (PTFE) material, and other parts are carbon steel material.Equipment also includes automatically controlling dress
Put, unlatching, the closing of supersonic generator 9 and high-speed stirred grinder 5 can be automatically controlled.
Embodiment one：
Pilot experiment soil uses artificially contaminated soil, takes farmland top layer 20cm soil, then with the chlorobenzene of acetone solution
Solution is polluted, and concentration is 150mgkg-1。
Pilot experiment is divided into two treatment groups, i.e., independent ultrasonication and ultrasonic wave/Zero-valent Iron collaboration processing, every group of soil
Earth consumption is 50kg, and soil ratio is 3：1, ultrasonic wave/Zero-valent Iron treatment group Zero-valent Iron consumption is 100g.Pilot plant operational factor
For：Ultrasonic power is 1200W, and stir speed (S.S.) is 300r/min, and ultrasonic treatment time is 90min.Using automatically controlling dress
The operation of control ultrasonic wave and stirring run time are put, ultrasonic unit and agitating device run time is set as 90min, reaches fortune
Equipment is automatically stopped after row total time.After end of run, chlorobenzene content in the soil after pureed sample, analyzing and processing is gathered.
Fig. 3 gives the removal effect of chlorobenzene under the conditions of different disposal, as a result shows native after independent ultrasonication 90min
Chlorobenzene content is by 150mgkg in earth-1It is down to 2.23mgkg-1, clearance is 98%, and ultrasonic wave/Zero-valent Iron processing chlorobenzene is dirty
Contaminate after soil 90min, pedotheque does not detect chlorobenzene, illustrate that ultrasonic wave/Zero-valent Iron United Technologies can realize that the quick of chlorobenzene goes
Remove.
Embodiment two：
Experiment soil is derived from certain insecticide factory's contaminated site soil.
Under conditions of ultrasonic wave/Zero-valent Iron collaboration processing, effect is removed to pollutant in soil to probe into Zero-valent Iron consumption
The influence of rate, sets 3 groups of experiments, and Zero-valent Iron consumption is respectively：300g, 600g and 900g.Every group of experiment soil consumption is 50kg,
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, ultrasonic treatment time is 60min, 75min, 90min.Run and stir using automaton control ultrasonic wave
Run time, setting ultrasonic unit and agitating device run time, automatic start ultrasonic unit and agitating device are mixed, is reached
Equipment is automatically stopped after operation total time.After mud-water separation, pollutant load after collection pureed sample analysis soil treatment, analysis
Major pollutants be 1,3- dichloro-benzenes, 1,4- dichloro-benzenes and 1,2,4- trichloro-benzenes.
Analysis result shows that 1,2,4- trichloro-benzenes is not detected, and Fig. 6 is 1,2,4- trichloro-benzenes in different Zero-valent Iron consumption bars
Removal effect under part, it can be seen that 1,2,4- trichloro-benzenes is substantially completely removed.Fig. 4, Fig. 5 give different Zero-valent Iron consumption bars
1,3- dichloro-benzenes, the clearance of 1,4- dichloro-benzenes under part.As a result show, when Zero-valent Iron consumption is 600g, in the place soil
The clearance highest of pollutant, reaches 65%.Therefore, the equipment is to 1,3- dichloro-benzenes, Isosorbide-5-Nitrae-dichloro-benzenes and 1, and 2,4- trichloro-benzenes are dirty
The soil of dye has preferable removal effect.
In addition to the implementation, this equipment can also have other embodiment.All use equivalent substitutions or equivalent transformation are formed
Technical scheme, all fall within the protection domain of application claims.
Claims (2)
1. a kind of method of the ultrasound-enhanced reparation of a kind of organic contamination place soil, it is characterised in that use organic contamination place
The prosthetic appliance of soil, contaminated soil is put into bucket (3), is driven by motor and is crushed slurry to soil progress crushed work, led to
Cross high-pressure hydraulic pump (2) water in aqua storage tank (1) is pumped into bucket (3), after soil is crushed, open bucket bottom valve (4), mud
Water mixed liquid enters high-speed stirred grinder (5), drives stirring slurry in rotating shaft to be stirred operation by stirring motor, realizes muddy water
It is sufficiently mixed, later on supersonic generator (9), ultrasonic wave brings into operation, ultrasonic time 60 minutes, ultrasonic power
1200W, stir speed (S.S.) is 300r/min；By the mud mixture of ultrasonic wave-Zero-valent Iron processing, mud is pumped into by sludge pump (6)
Aqueous phase after water separation device (7), separation of solid and liquid enters aqua storage tank (1) by circulating line, realizes can be recycled for water,
Mud after being dehydrated through sludge-water separating system can be in outdoor natural air drying；When the ultrasonic wave brings into operation, into muddy water mixed solution
Zero-valent Iron is added, the consumption of Zero-valent Iron is 300g/50kg soil；In the muddy water mixed solution, water and soil mass ratio is 3：1, can
1,2,4- trichloro-benzenes is removed completely；A kind of prosthetic appliance of described organic contamination place soil, including the storage being sequentially connected
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 by high-pressure hydraulic pump (2) with bucket (3), bucket (3) and high-speed stirring breading
Valve (4) is provided between millstone (5), high-speed stirred grinder (5) is connected by sludge pump (6) with device for separating mud and water (7),
Ultrasonic wave vibration plate (8) is arranged on the inner side of high-speed stirred grinder (5) outer wall, ultrasonic wave vibration plate (8) and supersonic generator (9)
It is connected, the delivery port of device for separating mud and water (7) is connected by water circulating pipe with aqua storage tank (1), by device for separating mud and water
(7) aqueous phase of separation directly can enter aqua storage tank (1) by water circulating pipe；The aqua storage tank (1) locates below ground level；Also wrap
Automaton is included, for automatically controlling the unlatching of supersonic generator (9) and high-speed stirred grinder (5), closing.
2. the method for the ultrasound-enhanced reparation of organic contamination place according to claim 1 soil, it is characterised in that：It is described super
Sound wave vibration plate (8) material is stainless steel, and device for separating mud and water (7) material is polytetrafluoroethylene (PTFE) material.
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| CN201310719488.9A CN103706621B (en) | 2013-12-24 | 2013-12-24 | A kind of device and method thereof of the ultrasound-enhanced reparation of organic contamination place soil |
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| CN105032908B (en) * | 2015-06-23 | 2017-06-06 | 江苏麦可博生物环保工程技术有限公司 | The device and process of a kind of renovation of organic pollution soil and underground water |
| 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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| KR100755910B1 (en) * | 2007-02-28 | 2007-09-06 | 금광개발 주식회사 | The process for recovering petroleum-contaminated soil and its apparatus |
| CN101941019A (en) * | 2010-08-19 | 2011-01-12 | 南京大学 | Method for removing chlordane and mirex in soil by utilizing ultrasonic wave/Fe |
| CN102303042B (en) * | 2011-05-31 | 2013-06-05 | 北京师范大学 | Circulation washing system device and method for polluted soil washing and repair |
| CN203061546U (en) * | 2013-01-24 | 2013-07-17 | 韩清洁 | Equipment for detoxifying chromic slag-polluted soil |
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