CN108568448A - A kind of vehicle-mounted heavy-metal contaminated soil movable type magnetic enrichment purification outfit - Google Patents
A kind of vehicle-mounted heavy-metal contaminated soil movable type magnetic enrichment purification outfit Download PDFInfo
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- CN108568448A CN108568448A CN201710135829.6A CN201710135829A CN108568448A CN 108568448 A CN108568448 A CN 108568448A CN 201710135829 A CN201710135829 A CN 201710135829A CN 108568448 A CN108568448 A CN 108568448A
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- contaminated soil
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- 239000002689 soil Substances 0.000 title claims abstract description 71
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 32
- 238000000746 purification Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 238000012216 screening Methods 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 30
- 238000000926 separation method Methods 0.000 claims abstract description 18
- 238000007885 magnetic separation Methods 0.000 claims abstract description 15
- 230000006872 improvement Effects 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 239000007787 solid Substances 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- 230000007246 mechanism Effects 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 4
- 239000003895 organic fertilizer Substances 0.000 claims description 4
- 239000000969 carrier Substances 0.000 claims description 2
- 239000012141 concentrate Substances 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 230000008520 organization Effects 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 2
- 238000007873 sieving Methods 0.000 abstract 1
- 238000003756 stirring Methods 0.000 description 4
- 229910052793 cadmium Inorganic materials 0.000 description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002386 leaching Methods 0.000 description 3
- 238000011068 loading method Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 210000000987 immune system Anatomy 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000006148 magnetic separator Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000007420 reactivation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of vehicle-mounted heavy-metal contaminated soil movable type magnetic enrichments to purify outfit, including crushing and screening conveyor module, slurrying module, material are launched the parts such as mixing module, magnetic separation module, separation of solid and liquid module, energy supply module, control module, water storage loop module, soil improvement module and formed.All equipment of heavy metal-polluted soil purification system in modular form, is loaded on one or several container-type lorries by the present invention, can quickly be reached and be repaired place, and heavy metal-polluted soil reparation is carried out.Under one kind, the present invention can be by contaminated soil by sieving approach, and slurrying, a series of process equipments such as material mixes, magnetic separation is detached, is separated by solid-liquid separation thoroughly remove the available heavy metal in soil, for heavy metal pollution of soil improvement with very high value.
Description
Technical field
The invention mainly relates to heavy metal-polluted soil recovery technique fields, especially by a kind of heavy metal-polluted soil purification system institute
Some equipment include crushing and screening conveyor module, slurrying module, material launch mixing module, magnetic separation module, be separated by solid-liquid separation module,
Energy supply module, water storage loop module, control module are loaded on container carrier, and it is vehicle-mounted heavy metal-polluted to become a set of one kind
It contaminates soil movable type magnetic enrichment and purifies outfit.
Background technology
On April 17th, 2014 Chinese Ministry of Environmental Protection and Ministry of Land and Resources combine and disclose《National Soil Pollution Investigation bulletin》：
Cadmium in Soil exceeding standard rate 7.0%, 8 kinds of cadmium, mercury, arsenic, copper, lead, chromium, zinc, nickel inorganic pollution point exceeding standard rates are respectively 7.0%,
1.6%, 2.7%, 2.1%, 1.5%, 1.1%, 0.9%, 4.8%, wherein cadmium serious pollution point ratio is 0.5%.The wherein central and east
Area's pollution is more serious, especially the coastal economies prosperity province such as Shandong, Zhejiang, Guangdong and Hunan, Henan, Hebei, Beijing,
Provinces and cities are concentrated in the heavy industry such as Tianjin.Poor mobility, residence time length cannot be dropped heavy metal contaminants by microorganism in the soil
Solution；And human body can be entered through media such as water, plants, destroy the final influence people such as nerve system of human body, immune system, skeletal system
The health of class.Heavy metal pollution of soil and improvement have become scientific circles or even global a great problem.
Heavy metal-polluted soil reparation at present mainly has phytoremediation, solidification reparation, chemical leaching.Wherein phytoremediation takes
It is long, pollution level no more than rehabilitation plant normal growth range and the later stage plant for absorbing heavy metal will further be located
Reason；It is good to cure repairing effect, it is quick but of high cost and heavy metal can not be thoroughly removed from soil, with environment
Variation heavy metal be easy reactivation；Chemical leaching effect is good, easy to operate but costly, and leacheate needs further place
It manages and be easy to cause secondary pollution.
Invention content
Present invention is primarily intended to develop a kind of vehicle-mounted heavy-metal contaminated soil movable type magnetic enrichment purification outfit, solution
Certainly or part solves that existing soil restoring technology efficiency is low, the period is long, of high cost, cannot thoroughly remove the technologies such as heavy metal and ask
Topic, heavy metal that can be in more quick, efficient purification soil.
To achieve the above object, technical scheme is as follows：A kind of vehicle-mounted heavy-metal contaminated soil movable type magnetic is rich
Collection purification outfit, including crushing and screening conveyor module, slurrying module, material launch mixing module, magnetic separation module, solid-liquid point
From module, energy supply module, control module, water storage loop module, soil improvement module.The bottom of all modules is reserved with spy
Different interface, can be with the interface rapid abutting joint of container base.
The crushing and screening conveyor module is for contaminated soil crushing and screening at required grain size and to be delivered to next
Equipment, the crushing and screening conveyor module are made of breaker, vibration screening device and conveying device.The breaker
Mainly it is made of transmission mechanism, blade, cutter shaft, rack and casing.Going out in breaker is arranged in the vibration screening device
At material mouth, it is made of sieve and vibrating motor.Conveying device setting in screen bottom, by belt, transmission mechanism, roller with
And rack composition.
The slurrying module is used to the soil after crushing and screening being configured to mud, and be transported to according to certain soil ratio
Next module, the slurrying module are made of water supply installation, agitating device.The water supply installation is mainly by water pump, pipeline, flow
Meter composition.The agitating device is mainly made of transmission mechanism, agitating shaft, rack and casing.
The material launches mixing module and is used to, by material, according to a certain percentage, be sufficiently mixed with mud, and the material is thrown
Mixing module is put to be made of metering device, agitating device.The agitating device mainly by transmission mechanism, agitating shaft, rack and
Casing forms.
The magnetic separation module for material to be separated from mud, the magnetic separation module by disc type concentration equipment, unload
Iron device forms.The disc type concentration equipment is mainly made of transmission mechanism, disk, rack.The iron device that unloads is mainly by spraying
Leaching, chute, hopper composition.
The separation of solid and liquid module is used to mud carrying out mud-water separation, and the separation of solid and liquid module is by slush pump, press filtration
Machine forms.
For supplying required energy medium, the energy supply module is the energy supply module by vehicle-mounted power supply
System, material are deposited the part such as tank, part warehouse and are formed.
The control module is for operating, monitor entire vehicle-mounted purification system, according to scene needs adjusting device at any time
Operating parameter.
The water storage loop module is for collecting clear water caused by mud-water separation module, and circulation-supplied is entire vehicle-mounted net
Change system, the water storage loop module are mainly made of Simple water pool, water circulating pump station
Further, the Simple water pool is mainly formed by column, pedestal, by rectangular plastic cloth of the bottom without top, and pedestal is pin
Shaft type links, and pedestal is connected to form rectangular frame by axis pin by when use with column, then plastic cloth is put into frame it is fixed,
Pond side is equipped with water outlet.
Further, the conveying device in the crushing and screening conveyor module is accordion structure, and foldable structure refers to folding
The belt conveyor of stacked, conveyor frame middle part are that axis pin connects, and conveyer can be folded by hinge of axis pin.
Further, the breaker feed inlet in the crushing and screening conveyor module carries anti-blocking mechanism, anti-clogging
Mechanism refers to having an axis in the bottom of feed bin, is uniformly distributed more blades in the circumferencial direction of axis, uniformly divides along the direction of axis
The multigroup blade of cloth, axis is driven by motor to be rotated, and material toggling is played the role of.
Further, the slurrying mould agitating device in the block uses horizontal-type biaxial stirring structure.
Further, the material launches hybrid guided mode agitating device in the block and uses horizontal single structure.
Further, the water storage cyclic module Simple water pool in the block can fold.
Technical scheme of the present invention can also be further perfect：
Preferably, a kind of vehicle-mounted heavy-metal contaminated soil movable type magnetic enrichment purification outfit can be incited somebody to action according to different demands
All modules concentrate on a container carrier, can also be distributed on several container carriers, joint connection in site.
Preferably, the breaker and conveying device in the crushing and screening conveyor module can pass through mechanical structure reality
Now share a motor drive.
Preferably, the material, which launches hybrid guided mode feeding device in the block, can also use screw conveying structure.
Preferably, scraper plate, vacuum pumping structure can also be used in the magnetic separation mould iron device in the block that unloads.
Preferably, plural serial stage may be used in disc type concentration equipment in institute's magnetic separation module.
Preferably, the structure type for being separated by solid-liquid separation module use includes but not limited to plate and frame filter press, belt pressure
Filter, centrifugal drier.
Preferably, the crushing and screening conveyor module, slurrying module, material launch mixing module, magnetic separation module, solid-liquid
Separation module, energy supply module, control module, water storage loop module, soil improvement module can use according to field condition
One or more form in parallel.
The soil improvement module（9）Mainly by soil feeding mechanism, organic fertilizer and soil mixed organization, discharging mechanism
Composition, treated that soil enters soil improvement module for filter press（9）It is uniformly mixed with organic fertilizer, to supplement soil nutrient
Loss, improve the gap structure detaching structure of soil.
The beneficial effects of the invention are as follows：
1) a kind of all modular structures of vehicle-mounted heavy-metal contaminated soil movable type magnetic enrichment purification outfit are simple, ripe, easy
In operation, and it can realize live fast assembling-disassembling；
2) a kind of vehicle-mounted heavy-metal contaminated soil movable type magnetic enrichment purification outfit realizes water resource in processing procedure
Recycle, solve the problems, such as that northern area water shortage is brought；
3) a kind of vehicle-mounted heavy-metal contaminated soil movable type magnetic enrichment purification outfit can thoroughly remove heavy metal, and
And secondary pollution will not be caused；
4) a kind of vehicle-mounted heavy-metal contaminated soil movable type magnetic enrichment purification outfit increases soil improvement module, reduces
To the perturbation of soil.
Due to using the above measure, heavy metal can thoroughly be removed from soil, the heavy metal recycled back can lead to
It crosses series of process and realizes regeneration, there is very high economic benefit.
Description of the drawings
Attached drawing 1 is the front view of the present invention；
Attached drawing 2 is the vertical view of Fig. 1；
Attached drawing 3 is outfit entrucking schematic diagram.
Reference sign：1, crushing and screening conveyor module, 2, slurrying module, 3, material launch mixing module, 4, magnetic separation
Module, 5, be separated by solid-liquid separation module, 6, energy supply module, 7, control module, 8, water storage loop module, 9, soil improvement module,
10, loading machine, 11, diaphragm pump, 12, screening plant, 13 breakers, 14, conveying device, 15, water supply installation, 16, stirring dress
It sets, 17, metering device, 18, agitating device, 19 disc type concentration equipments, 20, unload iron device, 21, slush pump, 22, filter press.
Specific implementation mode
By way of example and in conjunction with the accompanying drawings, technical scheme of the present invention is further elaborated with.
The crushing and screening conveyor module 1 includes that breaker 13, vibration screening device 12 and conveying device 14 form.
It polluted feed inlet of the soil by loading machine 10 directly through breaker 13 to be sent into, broken soil enters the screening dress of lower section
12 are set, the soil by screening is fallen in the conveying device 14 of bottom, via Belt Conveying to subsequent processing.
The slurrying module is mainly made of water supply installation 15, agitating device 16.By the soil of crushing and screening by stirring
The material mouth at 16 top of device enters, and water supply installation 15 starts simultaneously at plus water, and slurrying, system are carried out by agitating device 16 after the completion of proportioning
Mud is sent into subsequent processing by diaphragm pump 11 after the completion of slurry.
The material is launched mixing module and is mainly made of metering device 17, agitating device 18.Material is by metering device essence
Really weight is launched in control, and mud and material are thoroughly mixed by agitating device 18 later, and mixed mud is by diaphragm pump 11
It is sent into subsequent processing.
The magnetic separation module mainly by disc type concentration equipment 19, unload iron device 20 and form.Mud after the completion of being reacted with material
For slurry after disc type concentration equipment 19, material will be from being adsorbed on disk-type magnetic separator 19 in mud, can by unloading iron device 20
To detach material from disc type concentration equipment 19, and enter in collecting box.
The separation of solid and liquid module is mainly made of slush pump 21, filter press 22.
Operation principle：
Contaminated soil is sent directly into crushing and screening conveyor module 1 by loading machine 10, and soil is by breaker 13, screening plant 12
Afterwards, it is transported to slurrying module 2 by conveying device 14, while water supply installation 15, agitating device 16 start, and carry out mixing and stirring slurrying,
The mud made is sent into material by diaphragm pump 11 and launches mixing module 3, and metering device 17 starts and starts into agitating device 18
A certain amount of material is launched, mud and material are uniformly mixed by agitating device 18, and magnetic separation module 4 is sent into through diaphragm pump 11,
By disc type concentration equipment 19, the progress mud of iron device 20 and material separation are unloaded, the mud after separation enters separation of solid and liquid module
5, enter water storage loop module 8 by press filtration clear water, realizes water resource cycle, soil, which enters soil improvement module 9, to be improved,
Then it backfills.
Claims (10)
1. a kind of vehicle-mounted heavy-metal contaminated soil movable type magnetic enrichment purifies outfit, it is characterised in that：Including crushing and screening
Conveyor module（1）, slurrying module（2）, material launch mixing module（3）, magnetic separation module（4）, be separated by solid-liquid separation module（5）, the energy
Supply module（6）, control module（7）, water storage loop module（8）, soil improvement module（9）；The bottom of all modules is reserved with
The interface rapid abutting joint of interface and container base, is removably mounted on container base.
2. a kind of vehicle-mounted heavy-metal contaminated soil movable type magnetic enrichment according to claim 1 purifies outfit, special
Sign is：The crushing and screening conveyor module（1）By breaker（13）, intermediate vibration screening device（12）And bottom
Conveying device（14）Composition；The crushing and screening conveyor module（1）Contaminated soil crushing and screening at required grain size and is delivered to
Next equipment, the breaker（13）It is made of transmission mechanism, blade, cutter shaft, rack and casing；The vibration screening
It sets（12）It is arranged in breaker（13）Discharge outlet, be made of sieve and vibrating motor；The conveying device（14）Setting
In screen bottom, it is made of belt, transmission mechanism, roller and rack.
3. a kind of vehicle-mounted heavy-metal contaminated soil movable type magnetic enrichment according to claim 1 purifies outfit, special
Sign is：The slurrying module（2）By water supply installation（15）, agitating device（16）Composition；The slurrying module（2）With container
Bottom is fixed；The slurrying module（2）It is made of water supply installation, agitating device, slurrying module presses the soil after crushing and screening
According to certain soil ratio, it is configured to mud, and is transported to next module；The water supply installation is made of water pump, pipeline, flowmeter；
The agitating device is made of transmission mechanism, agitating shaft, rack and casing.
4. a kind of vehicle-mounted heavy-metal contaminated soil movable type magnetic enrichment according to claim 1 purifies outfit, special
Sign is：The material launches mixing module（3）By metering device（17）, agitating device（18）Composition；The agitating device
（18）Mainly it is made of transmission mechanism, agitating shaft, rack and casing.
5. a kind of vehicle-mounted heavy-metal contaminated soil movable type magnetic enrichment according to claim 1 purifies outfit, special
Sign is：The magnetic separation module（4）By disc type concentration equipment（19）, unload iron device（20）Composition, disc type concentration equipment（19）It adopts
Use plural serial stage；The disc type concentration equipment is made of transmission mechanism, disk, rack；It is described to unload iron device（20）By spraying, slipping
Slot, hopper composition use scraper plate, vacuum pumping structure.
6. a kind of vehicle-mounted heavy-metal contaminated soil movable type magnetic enrichment according to claim 1 purifies outfit, special
Sign is：The separation of solid and liquid module（5）By slush pump（21）And filter press（22）Composition.
7. a kind of vehicle-mounted heavy-metal contaminated soil movable type magnetic enrichment according to claim 1 purifies outfit, special
Sign is：The energy supply module（6）Tank is deposited by onboard power system, material, part warehouse forms.
8. a kind of vehicle-mounted heavy-metal contaminated soil movable type magnetic enrichment according to claim 1 purifies outfit, special
Sign is：The water storage loop module（8）, soil improvement module（9）It is fixed with container base；The water storage loop module
（8）Clear water caused by mud-water separation module, and the entire vehicle-mounted purification system of circulation-supplied will be collected；The water storage loop module
（8）It is made of Simple water pool, water circulating pump station.
9. a kind of vehicle-mounted heavy-metal contaminated soil movable type magnetic enrichment according to claim 8 purifies outfit, special
Sign is：The soil improvement module（9）It is made of soil feeding mechanism, organic fertilizer and soil mixed organization, discharging mechanism,
Treated that soil enters soil improvement module for filter press（9）It is uniformly mixed with organic fertilizer；
The Simple water pool is formed by column, pedestal, by rectangular plastic cloth of the bottom without top, and pedestal links for pin type；It is described
Crushing and screening conveyor module in conveying device be accordion structure, foldable structure refers to folding belt conveyor, defeated
It is that axis pin connects to send in the middle part of machine frame, and conveyer can be folded by hinge of axis pin；
Breaker feed inlet in the crushing and screening conveyor module carries anti-blocking mechanism, and anti-blocking mechanism refers in feed bin
Bottom be arranged an axis, be uniformly distributed more blades in the circumferencial direction of axis, multigroup blade, axis be uniformly distributed along the direction of axis
It is driven and is rotated by motor.
10. a kind of vehicle-mounted heavy-metal contaminated soil movable type magnetic enrichment purification according to any one of claim 1-9
Outfit, it is characterised in that：The crushing and screening conveyor module（1）, slurrying module（2）, material launch mixing module（3）、
Magnetic separation module（4）, be separated by solid-liquid separation module（5）, energy supply module（6）, control module（7）, water storage loop module（8）, soil
Improve module（9）Bottom is general with the fixed size of container, it can be achieved that exchanging；The control module（7）For operating, monitoring
Entire vehicle-mounted purification system, the operating parameter of adjusting device at any time is needed according to scene；Purification system is according to different demands by institute
There is module to concentrate on a container carrier, or be distributed on several container carriers, uses one according to field condition
Or more forms in parallel.
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| CN201710135829.6A CN108568448A (en) | 2017-03-08 | 2017-03-08 | A kind of vehicle-mounted heavy-metal contaminated soil movable type magnetic enrichment purification outfit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710135829.6A CN108568448A (en) | 2017-03-08 | 2017-03-08 | A kind of vehicle-mounted heavy-metal contaminated soil movable type magnetic enrichment purification outfit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109622582A (en) * | 2019-02-02 | 2019-04-16 | 北京中地华盾装备科技有限公司 | A kind of vehicular farmland soil heavy metals pollution in-situ immobilization equipment |
| CN110586633A (en) * | 2019-09-17 | 2019-12-20 | 太原理工大学 | A clean system for administering mining area soil heavy metal pollution |
| CN113318980A (en) * | 2021-05-22 | 2021-08-31 | 深圳市东深环保科技有限公司 | Silt screening machine and screening process |
| CN115990610A (en) * | 2023-01-30 | 2023-04-21 | 中科鼎实环境工程有限公司 | Farmland heavy metal pollution treatment and restoration equipment |
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Application publication date: 20180925 |