CN114682619A - Soil leaching integrated type modular heavy metal contaminated soil treatment system - Google Patents
Soil leaching integrated type modular heavy metal contaminated soil treatment system Download PDFInfo
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- CN114682619A CN114682619A CN202210383808.7A CN202210383808A CN114682619A CN 114682619 A CN114682619 A CN 114682619A CN 202210383808 A CN202210383808 A CN 202210383808A CN 114682619 A CN114682619 A CN 114682619A
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
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- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a soil leaching integrated modular heavy metal contaminated soil treatment system, which comprises: the soil leaching integrated modular heavy metal polluted soil treatment system realizes primary screening of soil through the feeding module, and the scrubbing module realizes water and soil pre-mixing and stirring and cleaning of the soil surface. The soaking and grading module realizes the soaking and grading of soil, the stirring and concentrating module and the filter pressing module realize water and soil separation, the whole system runs smoothly, and meanwhile, the integrated modular design is realized, so that the rapid installation and debugging are facilitated.
Description
Technical Field
The invention relates to the technical field of contaminated soil treatment equipment, in particular to a soil leaching integrated modular heavy metal contaminated soil treatment system.
Background
With the rapid development of modern industry, the problem of heavy metal pollution to soil is increasingly prominent. Heavy metals in soil cannot be decomposed or degraded by microorganisms like organic matters, are gradually accumulated in soil, are transmitted to human bodies through food chains and are accumulated, and the health of the human bodies is seriously harmed. Therefore, the removal of heavy metal pollution in soil has very important practical significance.
The soil leaching is an effective removing means of heavy metal contaminated soil, the traditional leaching equipment has the problems that heavy metals cannot be completely and effectively graded, faults such as soil adhesion and the like are easy to occur in the operation process, and the equipment cannot be operated smoothly, and the traditional leaching equipment has the problems of various equipment types, complex field installation and long debugging slow period.
Patent No. CN113732043A discloses a heavy metal contaminated medium enhanced leaching device and method, wherein the device screens out 0.05-2 mm-size soil particles which contain heavy metals and are most difficult to be uniformly mixed with leacheate through screening, so that the heavy metals and the leacheate are fully mixed, but slurry is easy to accumulate in a liquid collecting cavity and is difficult to treat in the device.
Disclosure of Invention
The invention provides a soil washing integrated modular heavy metal polluted soil treatment system which can effectively prevent slurry from being accumulated on the basis of rapidly screening soil and is integrated and modular so as to be convenient to install and beneficial to debugging and operation.
The soil leaching integrated modular heavy metal contaminated soil treatment system comprises a feeding module, a scrubbing module, a soaking and grading module, a stirring and concentrating module and a filter pressing module.
The scrubbing module comprises a stirring feeding machine and a scrubbing machine, the soaking and grading module comprises a first-level hydraulic vibrating screen, a first finished product conveyor, a first-level screen buffer tank, a high-efficiency soaking and grading machine, a second-level fine selection platform, a second-level fine selection screen and a second finished product conveyor, the scrubbing machine platform is provided with the stirring feeding machine and the scrubbing machine, the output end of the feeding module is communicated with the input end of the stirring feeding machine, the output end of the stirring feeding machine is communicated with the scrubbing machine, the output end of the scrubbing machine is communicated with the first-level hydraulic vibrating screen, the first-level hydraulic vibrating screen is provided with a first outlet and a second outlet, the first outlet is communicated with the first finished product conveyor, the second outlet is communicated with the first-level screen buffer tank, the outlet of the first-level screen buffer tank is communicated with the high-efficiency soaking and grading machine, the high-efficiency soaking and grading machine is provided with a third outlet and a fourth outlet, the fourth outlet is communicated with the second-stage fine selection platform, the second-stage fine selection screen is arranged on the second-stage fine selection platform, the second-stage fine selection screen is communicated with the third outlet and the second-stage fine selection platform, the second-stage fine selection platform is communicated with the stirring concentration module, and the second-stage fine selection screen is communicated with the second finished product conveyor.
In some embodiments, the feeding module includes a screening feeder and a feeding conveyor, an output of the screening feeder is in communication with an input of the feeding conveyor, and an output of the feeding conveyor is in communication with the agitating feeder.
In some embodiments, the stirring concentration module comprises a dosing machine, a deep cone concentration tank and a slurry cache tank, wherein the dosing machine is communicated with the deep cone concentration tank, an inlet of the deep cone concentration tank is communicated with the secondary fine selection platform, and an outlet of the deep cone concentration tank is communicated with the slurry cache tank.
In some embodiments, the filter pressing module comprises a filter pressing pump and a plate-and-frame filter press, the slurry buffer tank is communicated with the plate-and-frame filter press through a pipeline, the filter pressing pump is arranged on the pipeline, and slurry in the slurry buffer tank is pumped into the plate-and-frame filter press through the filter pressing pump.
In some embodiments, the screening feeder inlet is provided with a mesh screen for primary soil screening separation.
In some embodiments, the high-efficiency soaking classifier comprises a classifying bin and a soaking bin, a spiral classifying mechanism is arranged in the classifying bin, a stirring soaking mechanism is arranged in the soaking bin, a material passing port is arranged between the classifying bin and the soaking bin, a first lifting gate plate and an overflow pipe are arranged above the material passing port, the fourth outlet is an overflow pipe, two ends of the overflow pipe are respectively communicated with the classifying bin and the second-stage fine selection platform, the third outlet is arranged in the classifying bin, and the classifying bin is communicated with the second-stage fine selection sieve.
In some embodiments, a circulation tank, an overflow tank, a cyclone and a sand pump are further arranged in the second-stage fine screening platform, the circulation tank, the sand pump and the cyclone form a closed loop, the closed loop is communicated with the second-stage fine screening sieve, the circulation tank is communicated with the overflow pipe, a partition plate is arranged between the circulation tank and the overflow tank, a second lifting gate plate is arranged on the partition plate, the second lifting gate plate is communicated with the circulation tank and the overflow tank, and the overflow tank is communicated with the deep cone concentration tank.
In some embodiments, a stirring mechanism is disposed in both the circulation tank and the overflow tank.
In some embodiments, a scrubber platform is also provided, and the agitator feeder and the scrubber are both disposed on the scrubber platform.
The invention has the following beneficial effects:
1. stirring feeder machine and scrubbing machine stir the mixing and scrub the soil and water and the leacheate that the material loading module carried, fully with soil and leacheate mixing, be favorable to the preliminary dissociation of heavy metal from soil, one-level hydraulic vibration sieve sieves out the soil of great particle size in the soil and through the clean soil of first finished product conveyer output, surplus mud gets into one-level sieve buffer memory tank and high-efficient soaking grader, make soil particle in the mud further mix the stirring with the medicament, the abundant reaction, heavy metal ion further takes place the analysis in the soil and gets into the leacheate, rethread second grade fine screening sieve further sieves soil particle, sieve out respectively medium and less particle size soil particle and through the clean soil of second finished product conveyer output. And (3) stirring and settling the residual slurry through a deep cone concentration tank, performing filter pressing through a filter press, and separating mud from water. The invention treats the soil by multiple screening and soaking, improves the purification capacity of the polluted soil, realizes high-efficiency and rapid treatment of the tail soil, and has smooth operation of the whole treatment system.
2. The soil leaching integrated modular heavy metal polluted soil treatment system comprises a feeding module, a scrubbing module, a soaking grading module, a stirring concentration module and a filter pressing module, realizes integrated modular design, and is convenient for quick installation and debugging in field engineering application.
3. The feeding module is provided with a screening feeder, and the screening feeder is also provided with a grid screen, so that large-particle-size brick gravel can be removed, and soil pretreatment is realized.
4. And stirring mechanisms are arranged in the circulating tank and the overflow tank, so that mud can be prevented from precipitating.
Drawings
FIG. 1 is a top sectional view of a soil leaching integrated modular heavy metal contaminated soil treatment system according to an embodiment of the present invention;
FIG. 2 is a front sectional view of the soil leaching integrated modular heavy metal contaminated soil treatment system according to the embodiment of the present invention;
FIG. 3 is a top cross-sectional view of a screening feeder of an embodiment of the present invention;
FIG. 4 is a top sectional view of the high efficiency immersion classifier of an embodiment of the present invention;
FIG. 5 is a main sectional view of the high efficiency immersion grader
FIG. 6 is a schematic diagram of a two-stage beneficiation platform according to embodiments of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
The soil leaching integrated modular heavy metal contaminated soil treatment system comprises: the device comprises a feeding module, a scrubbing module, a soaking and grading module, a stirring and concentrating module and a filter pressing module.
Specifically, as shown in fig. 1 and fig. 2, the feeding module comprises a screening feeder 1 and a feeding conveyor 2, as shown in fig. 3, a grid screen 11 is arranged at an inlet of the screening feeder, and a discharge port of the screening feeder 1 is communicated with the feeding conveyor 2.
The scrubbing module comprises a stirring feeder 4 and a scrubbing machine 5, and the soaking and grading module comprises a first-level hydraulic vibrating screen 6, a first finished product conveyor 7, a first-level screen buffer tank 8, a high-efficiency soaking and grading machine 9, a second-level fine selection platform 10, a second-level fine selection screen 11 and a second finished product conveyor 12. The feeding machine and the scrubbing machine are arranged on the scrubbing machine platform 3, a feeding hole of the stirring feeding machine 4 is communicated with the feeding conveyor, a discharging hole of the stirring feeding machine 4 is communicated with the scrubbing machine 5, a discharging hole of the scrubbing machine 5 is communicated with the first-stage hydraulic vibrating screen 6, the first-stage hydraulic vibrating screen 6 is provided with a first outlet and a second outlet, and the first outlet is communicated with the first finished product conveyor 7 and used for outputting large-particle-size soil particles. The second outlet is communicated with a first-level screen buffer tank 8 and is used for storing mud. The discharge hole of the first-level sieve buffer tank 8 is communicated with the high-efficiency soaking classifier 9.
As shown in fig. 4 and 5, the high-efficiency soaking classifier 9 has a soaking bin 901 and a classifying bin 902, a stirring soaking mechanism 903 is arranged in the soaking bin 901, a spiral classifying mechanism 904 is arranged in the classifying bin 902, the soaking bin 901 and the classifying bin 902 are communicated through a material passing port 905, a first lifting gate plate and an overflow pipe 906 are arranged above the material passing port 905, the first lifting gate plate is communicated with the classifying bin and the overflow pipe 906, and the other end of the overflow pipe 906 is a fourth outlet. The discharge port of the classifying bin 902 is a third outlet.
As shown in fig. 5, a secondary fine screening sieve 11 is arranged above the secondary fine screening platform 10, and the secondary fine screening sieve 11 is communicated with the classifying bin through a third outlet. A circulating tank 101 and an overflow tank 102 are arranged in the second-stage fine selection platform 10, a stirring mechanism 103 and a grit pump are arranged in both the circulating tank 101 and the overflow tank 102, the circulating tank is communicated with an overflow pipe 906, a cyclone 104 is arranged above the circulating tank, and the cyclone 104 is communicated with a second-stage fine selection screen 11. The circulating groove is communicated with the overflow groove through a second lifting flashboard. The secondary fine screen 11 is communicated with a second finished product conveyor 12.
The stirring concentration module comprises a dosing machine 13, a deep cone concentration tank 14 and a slurry cache tank 15, the deep cone concentration tank 14 is communicated with the overflow groove, the dosing machine is arranged on the side edge of the deep cone concentration tank 14 and is communicated with the deep cone concentration tank 14, and the outlet of the deep cone concentration tank 14 is communicated with the slurry cache tank 15.
The filter pressing module comprises a filter pressing pump 16 and a plate and frame filter press 17, the slurry buffer tank 15 is communicated with the plate and frame filter press 17 through a pipeline, and the pipeline is provided with the filter pressing pump 16. A filter press platform is also arranged below the plate-and-frame filter press 17.
The scrubbing and screening module is also provided with a scrubbing machine platform 3, and the stirring and feeding machine 4 and the scrubbing machine 5 are both arranged on the scrubbing machine platform 3.
According to the soil leaching integrated modular heavy metal contaminated soil treatment system provided by the embodiment of the invention, the process flow is as follows:
1. the heavy metal contaminated soil is fed from a screening feeder 1, pre-screening treatment is carried out through a grid screen, large-particle-size brick gravel is screened out, and then the soil is conveyed to a stirring feeder 4 through a feeding conveyor 2;
2. the stirring and feeding machine 4 stirs the soil and the water to form slurry, the slurry is sent into the scrubbing machine 5, and the scrubbing machine 5 rubs and washes the soil surface fully to make the slurry and the leacheate mixed fully and uniformly.
3. The cleaned mud enters a first-stage hydraulic vibrating screen 6, and the soil particles with large particle size are output through a first finished product conveyor 7.
4. The residual mud enters a first-stage sieve buffer tank 8 and then enters a high-efficiency soaking classifier 9, so that the mud is further stirred to react with the leaching agent and then is classified into high-concentration mud sand and low-concentration supernatant, the high-concentration mud sand reaches a second-stage fine screening sieve 11 through a classification bin, and the mud is dewatered and then passes through a second finished product conveyor 12. The low-concentration supernatant enters the circulating tank through the overflow tank and is pumped into the cyclone through the sand pump, the cyclone separates the low-concentration supernatant into silt particles and residual clear liquid, and the silt particles are output through the second finished product conveyor 12 after being dehydrated through the second-stage fine screening.
5. The residual clear liquid enters a deep cone concentration tank 14 through an overflow groove, and a flocculating agent is added into the residual clear liquid by a dosing machine 13, stirred and concentrated, and enters a slurry buffer tank 15.
6. And pumping the slurry in the slurry buffer tank 15 into a plate-and-frame filter press 17 through a filter press pump 16, and performing filter pressing treatment on the slurry to separate mud from water.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
In the description of the present invention, it is to be understood that the terms "central", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the scope of the present invention.
If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the use of "first" and "second" is merely for convenience in describing the invention and to simplify the description, and unless otherwise stated the above words are not intended to have a special meaning.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, but such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A soil leaching integrated form modularization heavy metal contaminated soil processing system includes: a feeding module, a scrubbing module, a soaking grading module, a stirring concentration module and a filter pressing module, which is characterized in that,
the scrubbing module comprises a stirring feeding machine and a scrubbing machine, the soaking and grading module comprises a first-level hydraulic vibrating screen, a first finished product conveyor, a first-level screen buffer tank, a high-efficiency soaking and grading machine, a second-level fine selection platform, a second-level fine selection screen and a second finished product conveyor, the scrubbing machine platform is provided with the stirring feeding machine and the scrubbing machine, the output end of the feeding module is communicated with the input end of the stirring feeding machine, the output end of the stirring feeding machine is communicated with the scrubbing machine, the output end of the scrubbing machine is communicated with the first-level hydraulic vibrating screen, the first-level hydraulic vibrating screen is provided with a first outlet and a second outlet, the first outlet is communicated with the first finished product conveyor, the second outlet is communicated with the first-level screen buffer tank, the outlet of the first-level screen buffer tank is communicated with the high-efficiency soaking and grading machine, the high-efficiency soaking and grading machine is provided with a third outlet and a fourth outlet, the fourth outlet is communicated with the secondary fine selection platform, the secondary fine selection screen is arranged on the secondary fine selection platform, the secondary fine selection screen is communicated with the third outlet and the secondary fine selection platform, the secondary fine selection platform is communicated with the stirring concentration module, and the secondary fine selection screen is communicated with the second finished product conveyor.
2. The soil washing integrated modular heavy metal contaminated soil treatment system according to claim 1, wherein said feeding module comprises a screening feeder and a feeding conveyor, an output end of said screening feeder is in communication with an input end of said feeding conveyor, and an output end of said feeding conveyor is in communication with said agitation feeder.
3. The soil washing integrated modular heavy metal contaminated soil treatment system according to claim 1, wherein the stirring concentration module comprises a dosing machine, a deep cone concentration tank and a slurry cache tank, the dosing machine is communicated with the deep cone concentration tank, an inlet of the deep cone concentration tank is communicated with the secondary fine selection platform, and an outlet of the deep cone concentration tank is communicated with the slurry cache tank.
4. The soil washing integrated modular heavy metal contaminated soil treatment system according to claim 3, wherein the filter pressing module comprises a filter pressing pump and a plate and frame filter press, the slurry cache tank is communicated with the plate and frame filter press through a pipeline, the filter pressing pump is arranged on the pipeline, and slurry in the slurry cache tank is pumped into the plate and frame filter press through the filter pressing pump.
5. The soil washing integrated modular heavy metal contaminated soil treatment system according to claim 2, wherein the screening feeder inlet is provided with a mesh screen for primary screening separation of the soil.
6. The soil washing integrated modular heavy metal contaminated soil treatment system according to claim 1, wherein the high-efficiency soaking classifier comprises a classifying bin and a soaking bin, a spiral classifying mechanism is arranged in the classifying bin, a stirring and soaking mechanism is arranged in the soaking bin, a material passing port is arranged between the classifying bin and the soaking bin, a first lifting gate and an overflow pipe are arranged above the material passing port, a fourth outlet is an overflow pipe, two ends of the overflow pipe are respectively communicated with the classifying bin and the second-stage fine selection platform, a third outlet is arranged in the classifying bin, and the classifying bin is communicated with the second-stage fine selection sieve.
7. The soil leaching integrated modular heavy metal contaminated soil treatment system according to claim 6, wherein a circulation tank, an overflow tank, a cyclone and a sand pump are further arranged in the secondary fine screening platform, the circulation tank, the sand pump and the cyclone form a closed loop, the closed loop is communicated with the secondary fine screening sieve, the circulation tank is communicated with the overflow pipe, a partition plate is arranged between the circulation tank and the overflow tank, a second lifting gate plate is arranged on the partition plate and is communicated with the circulation tank and the overflow tank, and the overflow tank is communicated with the deep cone concentration tank.
8. The soil washing integrated modular heavy metal contaminated soil treatment system according to claim 7, wherein stirring mechanisms are provided in both the circulation tank and the overflow tank.
9. The soil washing integrated modular heavy metal contaminated soil treatment system according to claim 1, further comprising a scrubber platform, wherein the agitation feeder and the scrubber are both disposed on the scrubber platform.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210383808.7A CN114682619A (en) | 2022-04-13 | 2022-04-13 | Soil leaching integrated type modular heavy metal contaminated soil treatment system |
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| CN202210383808.7A CN114682619A (en) | 2022-04-13 | 2022-04-13 | Soil leaching integrated type modular heavy metal contaminated soil treatment system |
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| CN110303033A (en) * | 2019-07-30 | 2019-10-08 | 中铁工程服务有限公司 | A kind of shield-tunneling construction dregs processing system and processing method |
| CN212174755U (en) * | 2020-04-03 | 2020-12-18 | 杰瑞环保科技有限公司 | Leaching complete equipment for rapidly treating sandy polluted bottom mud |
| CN113182340A (en) * | 2021-05-27 | 2021-07-30 | 郑州德森环境科技有限公司 | Skid-mounted soil remediation scrubbing production line |
| CN215543674U (en) * | 2021-05-27 | 2022-01-18 | 郑州德森环境科技有限公司 | Multistage drip washing fine separation device for soil |
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2022
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002028698A (en) * | 2000-07-12 | 2002-01-29 | Daiyo Kiko Kogyo Kk | Method and device for separating soil and sand from drilled muddy water |
| CN101445313A (en) * | 2008-12-30 | 2009-06-03 | 中国石化股份胜利油田分公司孤东采油厂 | Device for reutilization and treatment of oil-containing silt |
| CN201524486U (en) * | 2009-10-30 | 2010-07-14 | 湖州新开元碎石有限公司 | Mud, sand and water separation and recovery system |
| CN105776807A (en) * | 2016-04-22 | 2016-07-20 | 北京旭日绿色科技有限公司 | Movable rapid on-site dewatering system and method for building mud |
| CN207713519U (en) * | 2017-12-25 | 2018-08-10 | 陕西格润环保科技有限公司 | A kind of efficient cyclone applied to mud-water separation |
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| CN212174755U (en) * | 2020-04-03 | 2020-12-18 | 杰瑞环保科技有限公司 | Leaching complete equipment for rapidly treating sandy polluted bottom mud |
| CN113182340A (en) * | 2021-05-27 | 2021-07-30 | 郑州德森环境科技有限公司 | Skid-mounted soil remediation scrubbing production line |
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