CN105598147A - Soil washing device and washing method thereof - Google Patents
Soil washing device and washing method thereof Download PDFInfo
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- CN105598147A CN105598147A CN201511010793.6A CN201511010793A CN105598147A CN 105598147 A CN105598147 A CN 105598147A CN 201511010793 A CN201511010793 A CN 201511010793A CN 105598147 A CN105598147 A CN 105598147A
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- 239000002689 soil Substances 0.000 title claims abstract description 128
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005406 washing Methods 0.000 title abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000000926 separation method Methods 0.000 claims abstract description 28
- 239000010865 sewage Substances 0.000 claims abstract description 26
- 239000012065 filter cake Substances 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 11
- 238000004140 cleaning Methods 0.000 claims description 57
- 238000010926 purge Methods 0.000 claims description 36
- 239000002893 slag Substances 0.000 claims description 32
- 239000002351 wastewater Substances 0.000 claims description 26
- 238000004065 wastewater treatment Methods 0.000 claims description 19
- 239000003814 drug Substances 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 9
- 230000006872 improvement Effects 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 6
- 239000002699 waste material Substances 0.000 claims description 6
- 239000012459 cleaning agent Substances 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- 239000004575 stone Substances 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 2
- 239000003344 environmental pollutant Substances 0.000 abstract description 6
- 231100000719 pollutant Toxicity 0.000 abstract description 6
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 238000002386 leaching Methods 0.000 abstract 2
- 239000010808 liquid waste Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000003480 eluent Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005067 remediation Methods 0.000 description 2
- 239000013043 chemical agent Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 231100000749 chronicity Toxicity 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000003802 soil pollutant Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000003911 water pollution Methods 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
- B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
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 soil washing device and a washing method thereof. The washing device comprises a particle grading unit, a soil washing unit and a sewage treatment unit, wherein the particle grading unit is used for separating soil into particles with different particle sizes, the soil washing unit is used for washing the separated soil particles by adding an agent and clean water, and the sewage treatment unit is used for performing solid liquid separation on washed soil, a separated filter cake is improved, then backfilling is performed, and deep treatment is performed on separated sewage. Particle size grading is performed on polluted soil for multiple times, then soil with a particle size range in which target pollutants exist intensively and a leaching agent are mixed and added into a leaching reactor, multi-stage washing is performed by controlling certain conditions, the washed soil is separated out, then backfilling or deep treatment is performed, and liquid waste gathering the pollutants is treated and then is discharged or reused.
Description
Technical field
The present invention, about the cleaning device in field of environment protection and method, refers to cleaning device and the cleaning method thereof of contaminated soil in soil remediation industry especially.
Background technology
Along with industrial fast development and country " move back two and enter three " policy adjustment, the domestic urgently repairing and treating of a large amount of contaminated sites that produced. Place soil pollutant sources is extensive, comprises the discharge of the industrial pollutants such as chemical industry, metallurgy, mining, pharmacy. Compare with atmosphere and water pollution, soil pollution has the feature such as chronicity, disguise, harm humans health and ecological environment. Therefore, repairing polluted soil, recovers soil and uses function, is focus both domestic and external and difficulties always.
Comprise biological restoration, physics reparation, chemistry reparation and combine reparation etc. for the technology of soil remediation at present, repair mode comprises original position reparation and showering. Biological restoration comprises phytoremediation and microorganism reparation, is applicable to the soil that pollution level is lighter, has the features such as repairing efficiency is long, cost is low; Physics reparation comprises isolation, soil removal and replacement, physics ventilation, thermal desorption etc., is applicable to the place that pollution concentration is high, area is little, but easy spoiled soil structure, quantities is large, energy consumption is large, expense high; Chemistry recovery technique comprises the technology such as soil stabilization/solidify, chemical oxidation, reduction, by add the chemical agent such as stabilizing agent, Oxidizing and Reducing Agents in soil, by effects such as oxidation, reduction, complexing, chelating or precipitations, to reduce toxicity and the decomposing organic pollutant of heavy metal.
Traditional soil cleaning device has weakened the concept of soil particle diameter classification, is unfavorable for minimizing and the resource of contaminated soil.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of soil cleaning device and cleaning method thereof, carry out device assembles and cleaning treatment flexibly according to the physical parameter of contaminated soil (comprising particle diameter distribution, the content of organic matter, pollutant kind etc.), realize innoxious, minimizing and the resource of contaminated soil.
For achieving the above object, the invention provides a kind of soil cleaning device, it comprises gradation unit, soil cleaning unit and sewage treatment unit, this gradation unit is for being separated into the different particle of particle diameter by soil, this soil cleaning unit is for cleaning the soil particle after separating by adding medicament and clear water, the soil after cleaning is carried out Separation of Solid and Liquid by this sewage treatment unit, backfill after the filter cake improvement after separation, and the sewage after separation carries out advanced treating.
Described gradation unit comprises linear vibrating screen, feed hopper, rotary screen, fines feeder and coarse fodder feeder, this feed hopper is located at the below of linear vibrating screen, this feed hopper below connects one end of this rotary screen by a conveying worm obliquely, the other end of this rotary screen connects coarse fodder feeder by pipeline, the below of this rotary screen connects this fines feeder by pipeline, this fines feeder below connects described soil cleaning unit by pipeline, and this rotary screen inner top is provided with spray equipment.
Described soil cleaning unit comprises purge tank, for the chemical pump of adding medicine and clear water in purge tank and be located at the agitator in purge tank, wherein said fines feeder bottom connects this purge tank by pipeline, this pipeline is provided with slag stock pump, and described purge tank separately connects described sewage treatment unit by pipeline.
Described sewage treatment unit comprises plate and frame filter press, waste water treatment tank and inclined-plate clarifying basin, this plate and frame filter press is for Separation of Solid and Liquid, its below is provided with filter cake gathering-device and wastewater collection pond, this filter cake gathering-device and wastewater collection pond connect this sheet frame by pipeline respectively and consider press, this wastewater collection pond connects this waste water treatment tank by pipeline, this pipeline is provided with slag stock pump, this waste water treatment tank connects this inclined-plate clarifying basin by pipeline, this pipeline is provided with slag stock pump, wherein this plate and frame filter press connects described purge tank by another pipeline, this pipeline is provided with slag stock pump.
Described soil cleaning unit also includes hydrocyclone and clean water tank, and this purge tank connects this hydrocyclone by pipeline, and this pipeline is provided with slag stock pump, and this hydrocyclone bottom is connected to this clean water tank by pipeline.
Described sewage treatment unit comprises the first sheet frame filter press, the second sheet frame filter press, waste water treatment tank and inclined-plate clarifying basin, this the first sheet frame filter press and the second sheet frame filter press bottom are equipped with filter cake gathering-device and wastewater collection pond, this filter cake gathering-device and wastewater collection pond connect corresponding sheet frame by pipeline respectively and consider press, this wastewater collection pond connects this waste water treatment tank by pipeline, this pipeline is provided with slag stock pump, this waste water treatment tank connects this inclined-plate clarifying basin by pipeline, this pipeline is provided with slag stock pump, wherein this plate and frame filter press connects described purge tank by another pipeline, this pipeline is provided with slag stock pump, described clean water tank connects this second sheet frame filter press by pipeline, and this pipeline is provided with slag stock pump, and the overfall at described hydrocyclone top connects this first sheet frame filter press by pipeline.
The present invention also provides a kind of soil cleaning method, and the method comprises:
(1) utilize gradation unit contaminated soil to be separated into the soil of different-grain diameter;
(2) utilize soil cleaning unit to clean by adding medicament and clear water the soil after separating;
(3) utilize sewage treatment unit to carry out Separation of Solid and Liquid to the soil after cleaning, backfill after the filter cake improvement after separation, the sewage after separation carries out advanced treating.
Described step (1) specifically comprises:
Contaminated soil is put into the uncovered topmost of a linear vibrating screen, in linear vibrating screen, carrying out soil particle for the first time separates, through linear vibrating screen dry screen, the stone of larger particles in contaminated soil or building waste are removed, the less soil particle of particle diameter under linear vibrating screen sieve enters a feed hopper, be delivered to rotary screen through conveying worm again, in rotary screen, carrying out soil particle for the second time separates, the spray equipment that utilizes this rotary screen inner top to install is sprayed water in rotary screen, collect by rotating the soil particle of large particle diameter to sieve out by coarse fodder feeder, the soil particle of small particle diameter is collected by fines feeder as screenings together with water.
Described step (2) specifically comprises:
The less soil of particle diameter sieving out in step (1) is delivered in a purge tank, in this purge tank, add cleaning agent and a certain amount of clear water by chemical pump, and utilize the agitator in purge tank to be uniformly mixed, and the mixed liquor of the soil particle in this purge tank and medicament clear water is delivered to a hydrocyclone, in this hydrocyclone, carry out soil particle for the third time and separate.
Described step (3) specifically comprises:
By the mixed liquor of the soil particle after cleaning in step (2) and medicament clear water by being delivered to plate and frame filter press, in plate and frame filter press, carry out Separation of Solid and Liquid, soil filter cake after separation enters filter cake gathering-device, after improvement, carry out backfill, waste water after separation enters wastewater collection pond, enter waste water treatment tank by slag stock pump again, and carry out dosing processing, waste water after treatment is collected and is recycled by inclined-plate clarifying basin.
Contaminated soil is carried out repeatedly grain size grading by the present invention, then the soil in the concentrated target contaminant particle size range existing is mixed with eluent and is added in drip washing reactor, and control and carry out multistage cleaning under certain condition, the soil of washing is separated, backfill or make advanced treating, enrichment the waste liquid of pollutant discharge after treatment or reuse.
Brief description of the drawings
Fig. 1 is the enforcement view of soil cleaning device of the present invention;
Fig. 2 is another enforcement view of soil cleaning device of the present invention.
Detailed description of the invention
For ease of structure of the present invention, method and the effect that reaches are had to further understanding, the existing preferred embodiment that develops simultaneously is by reference to the accompanying drawings described in detail as follows.
As shown in Figure 1, soil cleaning device of the present invention comprises gradation unit, soil cleaning unit and sewage treatment unit, this gradation unit is for being separated into the different particle of particle diameter by soil, this soil cleaning unit is for cleaning the soil particle after separating by adding medicament and clear water, the soil after cleaning is carried out Separation of Solid and Liquid by this sewage treatment unit, backfill after filter cake improvement after separation, the sewage after separation carries out advanced treating.
Wherein gradation unit comprises linear vibrating screen 10, feed hopper 11, rotary screen 12, fines feeder 13 and coarse fodder feeder 14, this feed hopper 11 is located at the below of linear vibrating screen 10, these feed hopper 11 belows connect one end of these rotary screens 12 by a conveying worm obliquely 15, the other end of this rotary screen 12 connects coarse fodder feeder 14 by pipeline, and the below of this rotary screen 12 connects this fines feeder 13 by pipeline. In the time that reality is implemented, contaminated soil is dug out from place, by digging machine or forklift, contaminated soil is put into the uncovered topmost of linear vibrating screen 10, in linear vibrating screen 10, carrying out soil particle for the first time separates, the stone of larger particles in contaminated soil or building waste can be removed through linear vibrating screen 10 dry screens, this part stone or building waste can carry out fragmentation after simple flushing, carry out recycling as construction material; The less soil particle of particle diameter under linear vibrating screen 10 sieves enters feed hopper 11, after the simple metering of conveying worm 15, be delivered to rotary screen 12 again, in rotary screen 12, carrying out soil particle for the second time separates, these rotary screen 12 inner tops are provided with spray equipment 120, spray equipment 120 can be sprayed water in rotary screen, collect by rotating the soil particle of large particle diameter to sieve out by coarse fodder feeder 14, screening soil out carries out follow-up flushing depending on pollution level; The soil particle of small particle diameter is collected by fines feeder 13 as screenings together with water.
Soil cleaning unit of the present invention comprises purge tank 20, for the chemical pump 21 of adding medicine and clear water and be located at the agitator 22 in purge tank 20. Wherein fines feeder 13 bottoms connect this purge tank 20 by pipeline, and this pipeline is provided with slag stock pump, and this purge tank 20 connects sewage treatment unit by pipeline. Small particle diameter soil particle in fines feeder 13 pumps into purge tank 20 together with water by slag stock pump, in purge tank 20, adds cleaning agent and a certain amount of clear water by chemical pump 21, and is uniformly mixed with agitator 22; Agitator 22 stirs after certain hour, pumps into sewage treatment unit by slag stock pump.
Sewage treatment unit in the present invention comprises plate and frame filter press 30, waste water treatment tank 31 and inclined-plate clarifying basin 32, these plate and frame filter press 30 belows are provided with filter cake gathering-device 33 and wastewater collection pond 34, this filter cake gathering-device 33 and wastewater collection pond 34 connect this sheet frame by pipeline respectively and consider press 30, this wastewater collection pond 34 connects this waste water treatment tank 31 by pipeline, this pipeline is provided with slag stock pump, this waste water treatment tank 31 connects this inclined-plate clarifying basin 32 by pipeline, this pipeline is provided with slag stock pump, wherein plate and frame filter press 30 connects purge tank 20 by another pipeline, this pipeline is provided with slag stock pump. soil particle in this purge tank 20 and the mixed liquor of medicament clear water are sent into plate and frame filter press 30 by slag stock pump, in plate and frame filter press 30, carry out Separation of Solid and Liquid, soil filter cake after separation enters filter cake gathering-device 33, after improvement, carry out backfill, waste water after separation enters wastewater collection pond 34, enter waste water treatment tank 31 by slag stock pump, and carry out dosing processing, waste water after treatment is collected and is recycled by inclined-plate clarifying basin 32.
From the above, soil cleaning device of the present invention adopts soil particle secondary separation and one-level to clean, and also can adopt separating for several times and multistage cleaning. As shown in Figure 2, the soil cleaning unit in the present invention also includes hydrocyclone 23 and clean water tank 24, and this purge tank 20 connects hydrocyclone 23 by pipeline, and this pipeline is provided with slag stock pump, and these hydrocyclone 23 bottoms are connected to clean water tank 24 by pipeline. Wherein the sheet frame of sewage treatment unit of the present invention filter press comprises two, be respectively the first sheet frame filter press 35 and the second sheet frame filter press 36, the first sheet frame filters press 35 and the second sheet frame filter press 36 bottoms are equipped with filter cake gathering-device 33 and wastewater collection pond, 34, two, wastewater collection pond connects waste water treatment tank 31 by pipeline respectively. This clean water tank 24 connects the second sheet frame filter press 36 by pipeline, and this pipeline is provided with slag stock pump, and the overfall at these hydrocyclone 23 tops connects the first sheet frame filter press 35 by pipeline. Mixer in purge tank 20 stirs after certain hour, soil particle in this purge tank 20 and the mixed liquor of medicament clear water are sent into hydrocyclone 23 by slag stock pump, in hydrocyclone 23, carrying out soil particle for the third time separates, granule soil enters the first sheet frame filter press 35 together with most of water from overfall discharging, greater particle size soil directly enters clean water tank 24 by hydrocyclone 23 bottoms, and add certain water gaging, be uniformly mixed after certain hour by the interior agitator of clean water tank 24, be pumped to the second sheet frame filter press 36 by slag stock pump. In this embodiment, first soil cleaning unit carries out the cleaning of first order cleaning agent in purge tank 20, then in clean water tank 24, carries out second level clear water cleaning.
Soil washing technology for contaminated soils in the present invention comprises the process such as physical fractionation and Chemical cleaning, it is a kind of showering technology, principle is that the contaminated soil excavating is out carried out to repeatedly grain size grading, then the soil in the concentrated target contaminant particle size range existing is mixed with eluent and is added in drip washing reactor, and control under certain condition, by assisting of the external force such as stirring, contaminated soil and eluent are had an effect, the heavy metal ion that is adsorbed on soil particle and colloid surface is eluted, transfer to after liquid phase, the soil of washing is separated, backfill or make advanced treating, enrichment the ring waste of pollutant discharge after treatment or reuse.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (10)
1. a soil cleaning device, it is characterized in that, it comprises gradation unit, soil cleaning unit and sewage treatment unit, this gradation unit is for being separated into the different particle of particle diameter by soil, this soil cleaning unit is for cleaning the soil particle after separating by adding medicament and clear water, the soil after cleaning is carried out Separation of Solid and Liquid by this sewage treatment unit, backfill after the filter cake improvement after separation, and the sewage after separation carries out advanced treating.
2. soil cleaning device as claimed in claim 1, it is characterized in that, described gradation unit comprises linear vibrating screen, feed hopper, rotary screen, fines feeder and coarse fodder feeder, this feed hopper is located at the below of linear vibrating screen, this feed hopper below connects one end of this rotary screen by a conveying worm obliquely, the other end of this rotary screen connects coarse fodder feeder by pipeline, the below of this rotary screen connects this fines feeder by pipeline, this fines feeder below connects described soil cleaning unit by pipeline, this rotary screen inner top is provided with spray equipment.
3. soil cleaning device as claimed in claim 2, it is characterized in that, described soil cleaning unit comprises purge tank, for the chemical pump of adding medicine and clear water in purge tank and be located at the agitator in purge tank, wherein said fines feeder bottom connects this purge tank by pipeline, this pipeline is provided with slag stock pump, and described purge tank separately connects described sewage treatment unit by pipeline.
4. soil cleaning device as claimed in claim 3, it is characterized in that, described sewage treatment unit comprises plate and frame filter press, waste water treatment tank and inclined-plate clarifying basin, this plate and frame filter press is for Separation of Solid and Liquid, its below is provided with filter cake gathering-device and wastewater collection pond, this filter cake gathering-device and wastewater collection pond connect this sheet frame by pipeline respectively and consider press, this wastewater collection pond connects this waste water treatment tank by pipeline, this pipeline is provided with slag stock pump, this waste water treatment tank connects this inclined-plate clarifying basin by pipeline, this pipeline is provided with slag stock pump, wherein this plate and frame filter press connects described purge tank by another pipeline, this pipeline is provided with slag stock pump.
5. soil cleaning device as claimed in claim 3, it is characterized in that, described soil cleaning unit also includes hydrocyclone and clean water tank, and this purge tank connects this hydrocyclone by pipeline, this pipeline is provided with slag stock pump, and this hydrocyclone bottom is connected to this clean water tank by pipeline.
6. soil cleaning device as claimed in claim 5, it is characterized in that, described sewage treatment unit comprises the first sheet frame filter press, the second sheet frame filter press, waste water treatment tank and inclined-plate clarifying basin, this the first sheet frame filter press and the second sheet frame filter press bottom are equipped with filter cake gathering-device and wastewater collection pond, this filter cake gathering-device and wastewater collection pond connect corresponding sheet frame by pipeline respectively and consider press, this wastewater collection pond connects this waste water treatment tank by pipeline, this pipeline is provided with slag stock pump, this waste water treatment tank connects this inclined-plate clarifying basin by pipeline, this pipeline is provided with slag stock pump, wherein this plate and frame filter press connects described purge tank by another pipeline, this pipeline is provided with slag stock pump, described clean water tank connects this second sheet frame filter press by pipeline, and this pipeline is provided with slag stock pump, and the overfall at described hydrocyclone top connects this first sheet frame filter press by pipeline.
7. a soil cleaning method, is characterized in that, the method comprises:
(1) utilize gradation unit contaminated soil to be separated into the soil of different-grain diameter;
(2) utilize soil cleaning unit to clean by adding medicament and clear water the soil after separating;
(3) utilize sewage treatment unit to carry out Separation of Solid and Liquid to the soil after cleaning, backfill after the filter cake improvement after separation, the sewage after separation carries out advanced treating.
8. soil cleaning method as claimed in claim 7, is characterized in that, described step (1) specifically comprises:
Contaminated soil is put into the uncovered topmost of a linear vibrating screen, in linear vibrating screen, carrying out soil particle for the first time separates, through linear vibrating screen dry screen, the stone of larger particles in contaminated soil or building waste are removed, the less soil particle of particle diameter under linear vibrating screen sieve enters a feed hopper, be delivered to rotary screen through conveying worm again, in rotary screen, carrying out soil particle for the second time separates, the spray equipment that utilizes this rotary screen inner top to install is sprayed water in rotary screen, collect by rotating the soil particle of large particle diameter to sieve out by coarse fodder feeder, the soil particle of small particle diameter is collected by fines feeder as screenings together with water.
9. soil cleaning method as claimed in claim 7, is characterized in that, described step (2) specifically comprises:
The less soil of particle diameter sieving out in step (1) is delivered in a purge tank, in this purge tank, add cleaning agent and a certain amount of clear water by chemical pump, and utilize the agitator in purge tank to be uniformly mixed, and the mixed liquor of the soil particle in this purge tank and medicament clear water is delivered to a hydrocyclone, in this hydrocyclone, carry out soil particle for the third time and separate.
10. soil cleaning method as claimed in claim 7, is characterized in that, described step (3) specifically comprises:
By the mixed liquor of the soil particle after cleaning in step (2) and medicament clear water by being delivered to plate and frame filter press, in plate and frame filter press, carry out Separation of Solid and Liquid, soil filter cake after separation enters filter cake gathering-device, after improvement, carry out backfill, waste water after separation enters wastewater collection pond, enter waste water treatment tank by slag stock pump again, and carry out dosing processing, waste water after treatment is collected and is recycled by inclined-plate clarifying basin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511010793.6A CN105598147A (en) | 2015-12-30 | 2015-12-30 | Soil washing device and washing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511010793.6A CN105598147A (en) | 2015-12-30 | 2015-12-30 | Soil washing device and washing method thereof |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105964670A (en) * | 2016-07-05 | 2016-09-28 | 湖南艾布鲁环保科技有限公司 | Device and method for recycling ex-site chemical elution-remediating eluate for heavy metal contaminated soil |
| CN106040729A (en) * | 2016-06-30 | 2016-10-26 | 华东理工大学 | Method for reinforcing pollutant desorption in fine soil particles |
| CN106927546A (en) * | 2017-03-23 | 2017-07-07 | 湖北保灵华环保科技有限公司 | A kind of soil argillaceous sand stone is separated and sewage disposal system, method |
| CN107321779A (en) * | 2017-08-18 | 2017-11-07 | 上海憬图环境工程有限公司 | A kind of organic material contaminated soil wet method prosthetic device and technique |
| CN107335682A (en) * | 2017-09-07 | 2017-11-10 | 苏州尧智生态环保科技有限公司 | The prosthetic appliance of contaminated soil |
| CN107363084A (en) * | 2017-08-18 | 2017-11-21 | 上海憬图环境工程有限公司 | A kind of Organic Pollution arable soil wet method improvement prosthetic device and technique |
| CN108262344A (en) * | 2017-12-28 | 2018-07-10 | 江苏盖亚环境科技股份有限公司 | A kind of dystopy elution and the coupling device of solidification and stabilization technology |
| CN108655164A (en) * | 2018-07-17 | 2018-10-16 | 北京高能时代环境技术股份有限公司 | A kind of elution device containing husky bed mud of heavy metal pollution |
| CN108672483A (en) * | 2018-04-23 | 2018-10-19 | 天津大学 | The integrated restorative procedure of fluid conveying reaction and system of organo-mineral complexing contaminated soil |
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| CN108838203A (en) * | 2018-07-18 | 2018-11-20 | 上海化工研究院有限公司 | A kind of contaminated soil multi-stage PCE and elution prosthetic device and technique |
| CN110369472A (en) * | 2019-06-06 | 2019-10-25 | 北京高能时代环境技术股份有限公司 | A kind of processing system and processing method for chromium-polluted soil |
| CN110624944A (en) * | 2019-09-10 | 2019-12-31 | 四川优尼柯环保科技有限公司 | Method for repairing soil polluted by landfill leachate |
| CN111330967A (en) * | 2020-03-18 | 2020-06-26 | 上海雨辰工程技术有限公司 | Contaminated soil leaching and repairing system |
| CN111872092A (en) * | 2020-07-31 | 2020-11-03 | 上海市环境科学研究院 | Organic pollution building garbage drum elution system and drum elution method |
| CN113000576A (en) * | 2021-01-28 | 2021-06-22 | 生态环境部南京环境科学研究所 | Device and method for restoring soil in organochlorine pesticide contaminated site |
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