CN207414010U - Screw type low-temperature plasma soil restoring device - Google Patents
Screw type low-temperature plasma soil restoring device Download PDFInfo
- Publication number
- CN207414010U CN207414010U CN201721373287.8U CN201721373287U CN207414010U CN 207414010 U CN207414010 U CN 207414010U CN 201721373287 U CN201721373287 U CN 201721373287U CN 207414010 U CN207414010 U CN 207414010U
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- Prior art keywords
- temperature plasma
- transmission shaft
- soil
- low
- conveyance conduit
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- 239000002689 soil Substances 0.000 title claims abstract description 64
- 230000005540 biological transmission Effects 0.000 claims abstract description 33
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 239000010453 quartz Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 20
- 230000005495 cold plasma Effects 0.000 abstract description 13
- 239000000126 substance Substances 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 231100000252 nontoxic Toxicity 0.000 abstract description 4
- 230000003000 nontoxic effect Effects 0.000 abstract description 4
- 231100000614 poison Toxicity 0.000 abstract description 4
- 230000007096 poisonous effect Effects 0.000 abstract description 4
- 238000005067 remediation Methods 0.000 abstract description 4
- 150000003384 small molecules Chemical class 0.000 abstract description 4
- 239000004020 conductor Substances 0.000 abstract description 2
- 239000002245 particle Substances 0.000 description 7
- 238000012545 processing Methods 0.000 description 6
- 150000003254 radicals Chemical class 0.000 description 6
- 230000006872 improvement Effects 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000011953 bioanalysis Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 206010027439 Metal poisoning Diseases 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 231100000749 chronicity Toxicity 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005281 excited state Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 208000010501 heavy metal poisoning Diseases 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/2406—Generating plasma using dielectric barrier discharges, i.e. with a dielectric interposed between the electrodes
- H05H1/2418—Generating plasma using dielectric barrier discharges, i.e. with a dielectric interposed between the electrodes the electrodes being embedded in the dielectric
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The utility model discloses a kind of screw type low-temperature plasma soil restoring devices, including conveyance conduit, there is the transmission shaft for being made of an electrically conducting material and being connected with ground wire in conveyance conduit, transmission shaft is equipped with helical blade, and pipeline outer wall is equipped with the high voltage electrode layer being connected with low-temperature plasma power supply.Soil remediation method：Start low-temperature plasma power supply, transmission shaft and high voltage electrode layer Uniform Discharge form plasma discharge area, transmission shaft drives helical blade to rotate, when soil passes through cold plasma discharge region, it discharges on contaminated soil surface and inside in cold plasma discharge region, conveyance conduit generates energetic radicals, and energetic radicals react with the poisonous and harmful substance in soil and generate nontoxic CO2And H2The small-molecule substances such as O.The soil restoring device of the utility model can continuously and mass disposal contaminated soil, and high treating effect, at low cost, the cycle is short.
Description
Technical field
The utility model is related to technical field of soil remediation, espespecially a kind of screw type low-temperature plasma soil restoring device.
Background technology
Heavy metal pollution has the characteristics that higher toxic, administers chronicity, enriching and concealment, easily passes through food
Chain is enriched with and seriously affects human health.As heavy metal poisoning event continues to bring out in recent years, research is efficient, at low cost, green
The soil remediation method that colour circle is protected is particularly important.
At present, the method for the heavy metal in the removing soil taken both at home and abroad is broadly divided into physics, chemistry and bioanalysis three
Kind.Physical method mainly includes activated carbon adsorption, electrode method, electromagnetic method, infusion method and functional paper removal method etc., exists
Adsorption efficiency is low, instrument is heavier, is unable to the significant drawbacks such as composite adsorption various heavy.Chemical method includes chemical precipitation
Method, inorganic acid and organic acid removal method, extraction, ion-exchange and ionic cross-linking etc., but its there are toxic, adsorption processes
Cumbersome, environmental pollution and the defects of recycling cannot be desorbed.Bioanalysis such as bio-flocculation process, biosorption process and phytoremediation
Method etc., but there are the shortcomings of adsorption efficiency is low, improvement cycle length and treatment cost are expensive for this method.
Therefore, the applicant is directed to providing a kind of screw type low-temperature plasma soil restoring device.
Utility model content
The purpose of this utility model is to provide a kind of screw type low-temperature plasma soil restoring device, and security is good, place
Reason effect is good and treatment cost is low, realizes the continuous and mass disposal of contaminated soil, effectively shortens heavy metal polluted soil
The improvement cycle of earth.
The technical scheme that the utility model is provided is as follows：
A kind of screw type low-temperature plasma soil restoring device including conveyance conduit, is equipped with transmission in the conveyance conduit
Axis, the transmission shaft be equipped with multiple helical blades, the transmission shaft be a conductive metallic rod, and the transmission shaft with ground
Line connects, and the transmission shaft is also connected with a driving device；The outer wall of the conveyance conduit is equipped with high voltage electrode layer, the height
Pressure electrode layer is connected with low-temperature plasma power supply.
Preferably, the both ends of the transmission shaft are rotatably arranged on stent respectively.
Preferably, the conveyance conduit is made of quartz.
Preferably, the high voltage electrode layer by metal net into.
Preferably, the rated voltage of the low-temperature plasma power supply is 220V, and output power is 0~3kw, and frequency regulates and controls model
It encloses for 0~50Hz, output voltage adjustable range is 0~30KV.
A kind of screw type low-temperature plasma soil restoring device provided by the utility model, is polluted by screw rod continuous conveying
Soil makes contaminated soil by cold plasma discharge region, and under the action of cold plasma discharge region, contaminated soil
In poisonous and harmful substance react and generate nontoxic CO2And H2The small-molecule substances such as O, so as to fulfill contaminated soil
Continuous processing effectively shortens the improvement cycle of contaminated soil, and security is good, treatment cost is low, also, transmission shaft conveying is dirty
It is contacted directly when contaminating soil with soil, and under the action of helical blade, contaminated soil becomes more lax, consequently facilitating pollution
The high energy electron that soil is generated with cold plasma discharge region collides, in addition, transmission shaft still forms low-temperature plasma
The cathode of region of discharge, therefore, the apparatus and method are good to the regulation effect of contaminated soil.
Description of the drawings
Below by a manner of clearly understandable, preferred embodiment is described with reference to the drawings, to the above-mentioned spy of the utility model
Property, technical characteristic, advantage and its realization method are further described.
Fig. 1 is the structure diagram of the screw type low-temperature plasma soil restoring device of this specific embodiment.
Drawing reference numeral explanation：
Conveyance conduit 1, transmission shaft 2, helical blade 3, high voltage electrode layer 4, low-temperature plasma power supply 5, stent 6, discharging pass
Send band 7, driving device 8.
Specific embodiment
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, attached drawing will be compareed below
Illustrate specific embodiment of the present utility model.It should be evident that the accompanying drawings in the following description is only the one of the utility model
A little embodiments, for those of ordinary skill in the art, without creative efforts, can also be according to these
Attached drawing obtains other attached drawings, and obtains other embodiments.To make simplified form, only schematically showing in each figure
With the relevant part of the utility model, they do not represent its practical structures as product.
This specific embodiment discloses a kind of screw type low-temperature plasma soil restoring device, including conveyance conduit 1, conveying
Transmission shaft 2 is equipped in pipeline 1, transmission shaft 2 is equipped with multiple helical blades 3, and it is defeated that transmission shaft 2 and helical blade 3 are collectively formed one
The screw-rod structure of contaminated soil is sent, transmission shaft 2 is connected with a driving device 8.Wherein, transmission shaft 2 is a conductive metallic rod,
And transmission shaft 2 is connected with ground wire.The outer wall of conveyance conduit 1 is equipped with high voltage electrode layer 4, high voltage electrode layer 4 and low-temperature plasma
Power supply 5 connects, and starts low-temperature plasma power supply 5, a cold plasma discharge area is formed between transmission shaft 2 and high voltage electrode layer 4
Domain.
In specific application, low-temperature plasma power supply 5 is started, and the rated voltage of low-temperature plasma power supply 5 is 220V, it is defeated
Go out power for 0~3kw, frequency modification scope is 0~50Hz, and output voltage adjustable range is 0~30KV, makes high voltage electrode layer 4
Cold plasma discharge region is formed between transmission shaft 2, when passing through low-temperature plasma under conveying of the contaminated soil in transmission shaft 2
During region of discharge, cold plasma discharge region is between the particle surface, particle of contaminated soil and the internal void of particle is sent out
It is raw to discharge, the O in air2、N2And the high energy electron that hydrone is generated with cold plasma discharge region collides, generation
Energetic radicals, energetic radicals include charged particle, excited state species, free radical, electronics, photon, energetic radicals and contaminated soil
In poisonous and harmful substance react and generate nontoxic CO2And H2The small-molecule substances such as O, so as to complete contaminated soil
It administers.
In this embodiment, high voltage electrode layer 4 by metal net into metal mesh is sticked in the outer wall of conveyance conduit 1
On, and around a circle of conveyance conduit 1, and conveyance conduit 1 is made of quartz.The both ends of transmission shaft 2 respectively rotatably arranged with
In triangular supports 6, when contaminated soil is delivered to the right end of conveyance conduit 1 by transmission shaft, contaminated soil falls from conveyance conduit
Onto discharge belt 7, the soil handled well is collected by discharge belt 7.
Screw type low-temperature plasma soil restoring device in this specific embodiment is simple in structure, easy to install, manufactures cost
It is low, contaminated soil is conveyed by screw-rod structure, so as to fulfill the high-volume continuous processing of contaminated soil, shortens contaminated soil
Process cycle reduces processing cost, and the transmission shaft for conveying soil is also to generate bearing in low-temperature plasma hair point region
Pole so sets and simplifies device, moreover, helical blade can make contaminated soil when conveying contaminated soil with chesson
Fully collision occurs with the high energy electron that cold plasma discharge region generates, it is thereby achieved that preferable regulation effect.
The restorative procedure of screw type low-temperature plasma soil restoring device in above-mentioned specific embodiment is：Driving device is led to
Crossing transmission shaft drives helical blade to rotate, and helical blade drives contaminated soil in conveyance conduit according to preset direction tumble flows
It is dynamic, a cold plasma discharge region is formed in conveyance conduit, by low temperature etc. while contaminated soil passes through conveyance conduit
Ionic discharge region, cold plasma discharge region is between the particle surface, particle of contaminated soil and the internal void of particle
It discharges, the O in conveyance conduit2、N2And the high energy electron that hydrone is generated with cold plasma discharge region touches
It hits, generates energetic radicals, energetic radicals react with the poisonous and harmful substance in contaminated soil and generate nontoxic CO2With
H2The small-molecule substances such as O；Wherein, conveyance conduit is equipped with a high voltage electrode layer, and high voltage electrode layer connects with low-temperature plasma power supply
It connects, transmission shaft is made of electrically conductive material and is connected with ground wire, starts low-temperature plasma power supply, transmission shaft and high voltage electrode layer are equal
Even electric discharge forms plasma discharge area.
Screw type low-temperature plasma soil remediation method disclosed in this specific embodiment, step is simple, easy to operate, can be with
It realizes the high-volume continuous processing of contaminated soil, and can realize preferable regulation effect, highly shortened contaminated soil
The cycle is administered, reduces treatment cost.
It of courses, in other specific embodiments of the screw type low-temperature plasma soil restoring device of the utility model,
The concrete structure of stent can be adjusted according to actual needs；The parameter of low-temperature plasma power supply can also be according to actual needs
Numerical value adjustment is carried out, details are not described herein again.
One test example of the screw type low-temperature plasma soil restoring device in above-mentioned specific embodiment is as described below：
Test soil：Certain Shanghai contaminated soil is picked up from, crushed 20 mesh sieves through air-drying, basic physical and chemical is：Grain
Footpath<5mm, moisture content 3.5%, non-methane total hydrocarbons (NMHC) concentration are 200mg/kg.
The basic parameter of method and device is set：In screw type low-temperature plasma soil restoring device, conveyance conduit it is interior
Footpath 200mm, length 1000mm, outer diameter 208mm, discharge power 3Kw, input voltage 220V, output voltage 30KV, supply frequency
50Hz, processing speed (i.e. the transfer rate of conveyer belt)：3m3/h。
Treatment effect：After the completion of processing, NMHC concentration is reduced to 3.97mg/m3, NMHC removal rates reach more than 98%.
It should be noted that above-described embodiment can be freely combined as needed.The above is only the utility model
Preferred embodiment, it is noted that for those skilled in the art, do not departing from the utility model principle
On the premise of, several improvements and modifications can also be made, these improvements and modifications also should be regarded as the scope of protection of the utility model.
Claims (5)
1. a kind of screw type low-temperature plasma soil restoring device, it is characterised in that：
Including conveyance conduit, transmission shaft is equipped in the conveyance conduit, the transmission shaft is equipped with multiple helical blades, the biography
Moving axis is a conductive metallic rod, and the transmission shaft is connected with ground wire,
The transmission shaft is also connected with a driving device；
The outer wall of the conveyance conduit is equipped with high voltage electrode layer, and the high voltage electrode layer is connected with low-temperature plasma power supply.
2. screw type low-temperature plasma soil restoring device as described in claim 1, it is characterised in that：
The both ends of the transmission shaft are rotatably arranged on stent respectively.
3. screw type low-temperature plasma soil restoring device as described in claim 1, it is characterised in that：
The conveyance conduit is made of quartz.
4. screw type low-temperature plasma soil restoring device as described in claim 1, it is characterised in that：
The high voltage electrode layer by metal net into.
5. screw type low-temperature plasma soil restoring device as described in claim 1, it is characterised in that：
The rated voltage of the low-temperature plasma power supply is 220V, and output power is 0~3kw, frequency modification scope for 0~
50Hz, output voltage adjustable range are 0~30KV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721373287.8U CN207414010U (en) | 2017-10-24 | 2017-10-24 | Screw type low-temperature plasma soil restoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721373287.8U CN207414010U (en) | 2017-10-24 | 2017-10-24 | Screw type low-temperature plasma soil restoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207414010U true CN207414010U (en) | 2018-05-29 |
Family
ID=62312578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721373287.8U Active CN207414010U (en) | 2017-10-24 | 2017-10-24 | Screw type low-temperature plasma soil restoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207414010U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107617636A (en) * | 2017-10-24 | 2018-01-23 | 龙净科杰环保技术（上海）有限公司 | Screw type low-temperature plasma soil remediation method and device |
| CN110026425A (en) * | 2019-03-30 | 2019-07-19 | 望江县同心农业专业合作社 | A kind of organic material contaminated soil repair system |
| CN112437531A (en) * | 2020-10-14 | 2021-03-02 | 清华大学 | Rotary dielectric barrier low-temperature plasma generating device |
-
2017
- 2017-10-24 CN CN201721373287.8U patent/CN207414010U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107617636A (en) * | 2017-10-24 | 2018-01-23 | 龙净科杰环保技术（上海）有限公司 | Screw type low-temperature plasma soil remediation method and device |
| CN110026425A (en) * | 2019-03-30 | 2019-07-19 | 望江县同心农业专业合作社 | A kind of organic material contaminated soil repair system |
| CN112437531A (en) * | 2020-10-14 | 2021-03-02 | 清华大学 | Rotary dielectric barrier low-temperature plasma generating device |
| CN112437531B (en) * | 2020-10-14 | 2022-05-06 | 清华大学 | Rotary dielectric barrier low-temperature plasma generating device |
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